diff --git a/.librarian/state.yaml b/.librarian/state.yaml
index 315a9511e8..986fc296dd 100644
--- a/.librarian/state.yaml
+++ b/.librarian/state.yaml
@@ -1,4 +1,4 @@
-image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:b8058df4c45e9a6e07f6b4d65b458d0d059241dd34c814f151c8bf6b89211209
+image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:667c9c407ace8caf2deba85187536df8a091e7b05c78eea63eb01255fe17a8f3
 libraries:
   - id: google-cloud-spanner
     version: 3.63.0
diff --git a/docs/_static/custom.css b/docs/_static/custom.css
deleted file mode 100644
index b0a295464b..0000000000
--- a/docs/_static/custom.css
+++ /dev/null
@@ -1,20 +0,0 @@
-div#python2-eol {
-	border-color: red;
-	border-width: medium;
-}
-
-/* Ensure minimum width for 'Parameters' / 'Returns' column */
-dl.field-list > dt {
-    min-width: 100px
-}
-
-/* Insert space between methods for readability */
-dl.method {
-	padding-top: 10px;
-	padding-bottom: 10px
-}
-
-/* Insert empty space between classes */
-dl.class {
-	padding-bottom: 50px
-}
diff --git a/docs/_templates/layout.html b/docs/_templates/layout.html
deleted file mode 100644
index 95e9c77fcf..0000000000
--- a/docs/_templates/layout.html
+++ /dev/null
@@ -1,50 +0,0 @@
-
-{% extends "!layout.html" %}
-{%- block content %}
-{%- if theme_fixed_sidebar|lower == 'true' %}
-  <div class="document">
-    {{ sidebar() }}
-    {%- block document %}
-      <div class="documentwrapper">
-      {%- if render_sidebar %}
-        <div class="bodywrapper">
-      {%- endif %}
-
-          {%- block relbar_top %}
-            {%- if theme_show_relbar_top|tobool %}
-              <div class="related top">
-                &nbsp;
-                {{- rellink_markup () }}
-              </div>
-            {%- endif %}
-          {% endblock %}
-
-          <div class="body" role="main">
-          	<div class="admonition" id="python2-eol">
-          	 As of January 1, 2020 this library no longer supports Python 2 on the latest released version.
-          	 Library versions released prior to that date will continue to be available. For more information please
-          	 visit <a href="https://cloud.google.com/python/docs/python2-sunset/">Python 2 support on Google Cloud</a>.
-          	</div>
-            {% block body %} {% endblock %}
-          </div>
-
-          {%- block relbar_bottom %}
-            {%- if theme_show_relbar_bottom|tobool %}
-              <div class="related bottom">
-                &nbsp;
-                {{- rellink_markup () }}
-              </div>
-            {%- endif %}
-          {% endblock %}
-
-      {%- if render_sidebar %}
-        </div>
-      {%- endif %}
-      </div>
-    {%- endblock %}
-    <div class="clearer"></div>
-  </div>
-{%- else %}
-{{ super() }}
-{%- endif %}
-{%- endblock %}
diff --git a/docs/conf.py b/docs/conf.py
deleted file mode 100644
index 010a6b6cda..0000000000
--- a/docs/conf.py
+++ /dev/null
@@ -1,385 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-#
-# google-cloud-spanner documentation build configuration file
-#
-# This file is execfile()d with the current directory set to its
-# containing dir.
-#
-# Note that not all possible configuration values are present in this
-# autogenerated file.
-#
-# All configuration values have a default; values that are commented out
-# serve to show the default.
-
-import sys
-import os
-import shlex
-
-# If extensions (or modules to document with autodoc) are in another directory,
-# add these directories to sys.path here. If the directory is relative to the
-# documentation root, use os.path.abspath to make it absolute, like shown here.
-sys.path.insert(0, os.path.abspath(".."))
-
-# For plugins that can not read conf.py.
-# See also: https://github.com/docascode/sphinx-docfx-yaml/issues/85
-sys.path.insert(0, os.path.abspath("."))
-
-__version__ = ""
-
-# -- General configuration ------------------------------------------------
-
-# If your documentation needs a minimal Sphinx version, state it here.
-needs_sphinx = "4.5.0"
-
-# Add any Sphinx extension module names here, as strings. They can be
-# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
-# ones.
-extensions = [
-    "sphinx.ext.autodoc",
-    "sphinx.ext.autosummary",
-    "sphinx.ext.intersphinx",
-    "sphinx.ext.coverage",
-    "sphinx.ext.doctest",
-    "sphinx.ext.napoleon",
-    "sphinx.ext.todo",
-    "sphinx.ext.viewcode",
-    "recommonmark",
-]
-
-# autodoc/autosummary flags
-autoclass_content = "both"
-autodoc_default_options = {"members": True}
-autosummary_generate = True
-
-
-# Add any paths that contain templates here, relative to this directory.
-templates_path = ["_templates"]
-
-# The suffix(es) of source filenames.
-# You can specify multiple suffix as a list of string:
-# source_suffix = ['.rst', '.md']
-source_suffix = [".rst", ".md"]
-
-# The encoding of source files.
-# source_encoding = 'utf-8-sig'
-
-# The root toctree document.
-root_doc = "index"
-
-# General information about the project.
-project = u"google-cloud-spanner"
-copyright = u"2025, Google, LLC"
-author = u"Google APIs"
-
-# The version info for the project you're documenting, acts as replacement for
-# |version| and |release|, also used in various other places throughout the
-# built documents.
-#
-# The full version, including alpha/beta/rc tags.
-release = __version__
-# The short X.Y version.
-version = ".".join(release.split(".")[0:2])
-
-# The language for content autogenerated by Sphinx. Refer to documentation
-# for a list of supported languages.
-#
-# This is also used if you do content translation via gettext catalogs.
-# Usually you set "language" from the command line for these cases.
-language = None
-
-# There are two options for replacing |today|: either, you set today to some
-# non-false value, then it is used:
-# today = ''
-# Else, today_fmt is used as the format for a strftime call.
-# today_fmt = '%B %d, %Y'
-
-# List of patterns, relative to source directory, that match files and
-# directories to ignore when looking for source files.
-exclude_patterns = [
-    "_build",
-    "**/.nox/**/*",
-    "samples/AUTHORING_GUIDE.md",
-    "samples/CONTRIBUTING.md",
-    "samples/snippets/README.rst",
-]
-
-# The reST default role (used for this markup: `text`) to use for all
-# documents.
-# default_role = None
-
-# If true, '()' will be appended to :func: etc. cross-reference text.
-# add_function_parentheses = True
-
-# If true, the current module name will be prepended to all description
-# unit titles (such as .. function::).
-# add_module_names = True
-
-# If true, sectionauthor and moduleauthor directives will be shown in the
-# output. They are ignored by default.
-# show_authors = False
-
-# The name of the Pygments (syntax highlighting) style to use.
-pygments_style = "sphinx"
-
-# A list of ignored prefixes for module index sorting.
-# modindex_common_prefix = []
-
-# If true, keep warnings as "system message" paragraphs in the built documents.
-# keep_warnings = False
-
-# If true, `todo` and `todoList` produce output, else they produce nothing.
-todo_include_todos = True
-
-
-# -- Options for HTML output ----------------------------------------------
-
-# The theme to use for HTML and HTML Help pages.  See the documentation for
-# a list of builtin themes.
-html_theme = "alabaster"
-
-# Theme options are theme-specific and customize the look and feel of a theme
-# further.  For a list of options available for each theme, see the
-# documentation.
-html_theme_options = {
-    "description": "Google Cloud Client Libraries for google-cloud-spanner",
-    "github_user": "googleapis",
-    "github_repo": "google-cloud-python",
-    "github_banner": True,
-    "font_family": "'Roboto', Georgia, sans",
-    "head_font_family": "'Roboto', Georgia, serif",
-    "code_font_family": "'Roboto Mono', 'Consolas', monospace",
-}
-
-# Add any paths that contain custom themes here, relative to this directory.
-# html_theme_path = []
-
-# The name for this set of Sphinx documents.  If None, it defaults to
-# "<project> v<release> documentation".
-# html_title = None
-
-# A shorter title for the navigation bar.  Default is the same as html_title.
-# html_short_title = None
-
-# The name of an image file (relative to this directory) to place at the top
-# of the sidebar.
-# html_logo = None
-
-# The name of an image file (within the static path) to use as favicon of the
-# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
-# pixels large.
-# html_favicon = None
-
-# Add any paths that contain custom static files (such as style sheets) here,
-# relative to this directory. They are copied after the builtin static files,
-# so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ["_static"]
-
-# Add any extra paths that contain custom files (such as robots.txt or
-# .htaccess) here, relative to this directory. These files are copied
-# directly to the root of the documentation.
-# html_extra_path = []
-
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-# html_last_updated_fmt = '%b %d, %Y'
-
-# If true, SmartyPants will be used to convert quotes and dashes to
-# typographically correct entities.
-# html_use_smartypants = True
-
-# Custom sidebar templates, maps document names to template names.
-# html_sidebars = {}
-
-# Additional templates that should be rendered to pages, maps page names to
-# template names.
-# html_additional_pages = {}
-
-# If false, no module index is generated.
-# html_domain_indices = True
-
-# If false, no index is generated.
-# html_use_index = True
-
-# If true, the index is split into individual pages for each letter.
-# html_split_index = False
-
-# If true, links to the reST sources are added to the pages.
-# html_show_sourcelink = True
-
-# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
-# html_show_sphinx = True
-
-# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
-# html_show_copyright = True
-
-# If true, an OpenSearch description file will be output, and all pages will
-# contain a <link> tag referring to it.  The value of this option must be the
-# base URL from which the finished HTML is served.
-# html_use_opensearch = ''
-
-# This is the file name suffix for HTML files (e.g. ".xhtml").
-# html_file_suffix = None
-
-# Language to be used for generating the HTML full-text search index.
-# Sphinx supports the following languages:
-#   'da', 'de', 'en', 'es', 'fi', 'fr', 'hu', 'it', 'ja'
-#   'nl', 'no', 'pt', 'ro', 'ru', 'sv', 'tr'
-# html_search_language = 'en'
-
-# A dictionary with options for the search language support, empty by default.
-# Now only 'ja' uses this config value
-# html_search_options = {'type': 'default'}
-
-# The name of a javascript file (relative to the configuration directory) that
-# implements a search results scorer. If empty, the default will be used.
-# html_search_scorer = 'scorer.js'
-
-# Output file base name for HTML help builder.
-htmlhelp_basename = "google-cloud-spanner-doc"
-
-# -- Options for warnings ------------------------------------------------------
-
-
-suppress_warnings = [
-    # Temporarily suppress this to avoid "more than one target found for
-    # cross-reference" warning, which are intractable for us to avoid while in
-    # a mono-repo.
-    # See https://github.com/sphinx-doc/sphinx/blob
-    # /2a65ffeef5c107c19084fabdd706cdff3f52d93c/sphinx/domains/python.py#L843
-    "ref.python"
-]
-
-# -- Options for LaTeX output ---------------------------------------------
-
-latex_elements = {
-    # The paper size ('letterpaper' or 'a4paper').
-    # 'papersize': 'letterpaper',
-    # The font size ('10pt', '11pt' or '12pt').
-    # 'pointsize': '10pt',
-    # Additional stuff for the LaTeX preamble.
-    # 'preamble': '',
-    # Latex figure (float) alignment
-    # 'figure_align': 'htbp',
-}
-
-# Grouping the document tree into LaTeX files. List of tuples
-# (source start file, target name, title,
-#  author, documentclass [howto, manual, or own class]).
-latex_documents = [
-    (
-        root_doc,
-        "google-cloud-spanner.tex",
-        u"google-cloud-spanner Documentation",
-        author,
-        "manual",
-    )
-]
-
-# The name of an image file (relative to this directory) to place at the top of
-# the title page.
-# latex_logo = None
-
-# For "manual" documents, if this is true, then toplevel headings are parts,
-# not chapters.
-# latex_use_parts = False
-
-# If true, show page references after internal links.
-# latex_show_pagerefs = False
-
-# If true, show URL addresses after external links.
-# latex_show_urls = False
-
-# Documents to append as an appendix to all manuals.
-# latex_appendices = []
-
-# If false, no module index is generated.
-# latex_domain_indices = True
-
-
-# -- Options for manual page output ---------------------------------------
-
-# One entry per manual page. List of tuples
-# (source start file, name, description, authors, manual section).
-man_pages = [
-    (
-        root_doc,
-        "google-cloud-spanner",
-        "google-cloud-spanner Documentation",
-        [author],
-        1,
-    )
-]
-
-# If true, show URL addresses after external links.
-# man_show_urls = False
-
-
-# -- Options for Texinfo output -------------------------------------------
-
-# Grouping the document tree into Texinfo files. List of tuples
-# (source start file, target name, title, author,
-#  dir menu entry, description, category)
-texinfo_documents = [
-    (
-        root_doc,
-        "google-cloud-spanner",
-        "google-cloud-spanner Documentation",
-        author,
-        "google-cloud-spanner",
-        "google-cloud-spanner Library",
-        "APIs",
-    )
-]
-
-# Documents to append as an appendix to all manuals.
-# texinfo_appendices = []
-
-# If false, no module index is generated.
-# texinfo_domain_indices = True
-
-# How to display URL addresses: 'footnote', 'no', or 'inline'.
-# texinfo_show_urls = 'footnote'
-
-# If true, do not generate a @detailmenu in the "Top" node's menu.
-# texinfo_no_detailmenu = False
-
-
-# Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {
-    "python": ("https://python.readthedocs.org/en/latest/", None),
-    "google-auth": ("https://googleapis.dev/python/google-auth/latest/", None),
-    "google.api_core": (
-        "https://googleapis.dev/python/google-api-core/latest/",
-        None,
-    ),
-    "grpc": ("https://grpc.github.io/grpc/python/", None),
-    "proto-plus": ("https://proto-plus-python.readthedocs.io/en/latest/", None),
-    "protobuf": ("https://googleapis.dev/python/protobuf/latest/", None),
-}
-
-
-# Napoleon settings
-napoleon_google_docstring = True
-napoleon_numpy_docstring = True
-napoleon_include_private_with_doc = False
-napoleon_include_special_with_doc = True
-napoleon_use_admonition_for_examples = False
-napoleon_use_admonition_for_notes = False
-napoleon_use_admonition_for_references = False
-napoleon_use_ivar = False
-napoleon_use_param = True
-napoleon_use_rtype = True
diff --git a/docs/multiprocessing.rst b/docs/multiprocessing.rst
deleted file mode 100644
index 536d17b2ea..0000000000
--- a/docs/multiprocessing.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-.. note::
-
-   Because this client uses :mod:`grpc` library, it is safe to
-   share instances across threads. In multiprocessing scenarios, the best
-   practice is to create client instances *after* the invocation of
-   :func:`os.fork` by :class:`multiprocessing.pool.Pool` or
-   :class:`multiprocessing.Process`.
diff --git a/docs/spanner_admin_database_v1/database_admin.rst b/docs/spanner_admin_database_v1/database_admin.rst
deleted file mode 100644
index bd6aab00e4..0000000000
--- a/docs/spanner_admin_database_v1/database_admin.rst
+++ /dev/null
@@ -1,10 +0,0 @@
-DatabaseAdmin
--------------------------------
-
-.. automodule:: google.cloud.spanner_admin_database_v1.services.database_admin
-    :members:
-    :inherited-members:
-
-.. automodule:: google.cloud.spanner_admin_database_v1.services.database_admin.pagers
-    :members:
-    :inherited-members:
diff --git a/docs/spanner_admin_database_v1/services_.rst b/docs/spanner_admin_database_v1/services_.rst
deleted file mode 100644
index 55e57d8dc0..0000000000
--- a/docs/spanner_admin_database_v1/services_.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Services for Google Cloud Spanner Admin Database v1 API
-=======================================================
-.. toctree::
-    :maxdepth: 2
-
-    database_admin
diff --git a/docs/spanner_admin_database_v1/types_.rst b/docs/spanner_admin_database_v1/types_.rst
deleted file mode 100644
index fe6c27778b..0000000000
--- a/docs/spanner_admin_database_v1/types_.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Types for Google Cloud Spanner Admin Database v1 API
-====================================================
-
-.. automodule:: google.cloud.spanner_admin_database_v1.types
-    :members:
-    :show-inheritance:
diff --git a/docs/spanner_admin_instance_v1/instance_admin.rst b/docs/spanner_admin_instance_v1/instance_admin.rst
deleted file mode 100644
index fe820b3fad..0000000000
--- a/docs/spanner_admin_instance_v1/instance_admin.rst
+++ /dev/null
@@ -1,10 +0,0 @@
-InstanceAdmin
--------------------------------
-
-.. automodule:: google.cloud.spanner_admin_instance_v1.services.instance_admin
-    :members:
-    :inherited-members:
-
-.. automodule:: google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers
-    :members:
-    :inherited-members:
diff --git a/docs/spanner_admin_instance_v1/services_.rst b/docs/spanner_admin_instance_v1/services_.rst
deleted file mode 100644
index 407d44cc34..0000000000
--- a/docs/spanner_admin_instance_v1/services_.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Services for Google Cloud Spanner Admin Instance v1 API
-=======================================================
-.. toctree::
-    :maxdepth: 2
-
-    instance_admin
diff --git a/docs/spanner_admin_instance_v1/types_.rst b/docs/spanner_admin_instance_v1/types_.rst
deleted file mode 100644
index 250cf6bf9b..0000000000
--- a/docs/spanner_admin_instance_v1/types_.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Types for Google Cloud Spanner Admin Instance v1 API
-====================================================
-
-.. automodule:: google.cloud.spanner_admin_instance_v1.types
-    :members:
-    :show-inheritance:
diff --git a/docs/spanner_v1/services_.rst b/docs/spanner_v1/services_.rst
deleted file mode 100644
index 3bbbb55f79..0000000000
--- a/docs/spanner_v1/services_.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Services for Google Cloud Spanner v1 API
-========================================
-.. toctree::
-    :maxdepth: 2
-
-    spanner
diff --git a/docs/spanner_v1/spanner.rst b/docs/spanner_v1/spanner.rst
deleted file mode 100644
index b51f4447e4..0000000000
--- a/docs/spanner_v1/spanner.rst
+++ /dev/null
@@ -1,10 +0,0 @@
-Spanner
--------------------------
-
-.. automodule:: google.cloud.spanner_v1.services.spanner
-    :members:
-    :inherited-members:
-
-.. automodule:: google.cloud.spanner_v1.services.spanner.pagers
-    :members:
-    :inherited-members:
diff --git a/docs/spanner_v1/types_.rst b/docs/spanner_v1/types_.rst
deleted file mode 100644
index c7ff7e6c71..0000000000
--- a/docs/spanner_v1/types_.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-Types for Google Cloud Spanner v1 API
-=====================================
-
-.. automodule:: google.cloud.spanner_v1.types
-    :members:
-    :show-inheritance:
diff --git a/docs/summary_overview.md b/docs/summary_overview.md
deleted file mode 100644
index ffaf71df07..0000000000
--- a/docs/summary_overview.md
+++ /dev/null
@@ -1,22 +0,0 @@
-[
-This is a templated file. Adding content to this file may result in it being
-reverted. Instead, if you want to place additional content, create an
-"overview_content.md" file in `docs/` directory. The Sphinx tool will
-pick up on the content and merge the content.
-]: #
-
-# Cloud Spanner API
-
-Overview of the APIs available for Cloud Spanner API.
-
-## All entries
-
-Classes, methods and properties & attributes for
-Cloud Spanner API.
-
-[classes](https://cloud.google.com/python/docs/reference/spanner/latest/summary_class.html)
-
-[methods](https://cloud.google.com/python/docs/reference/spanner/latest/summary_method.html)
-
-[properties and
-attributes](https://cloud.google.com/python/docs/reference/spanner/latest/summary_property.html)
diff --git a/google/cloud/spanner_admin_database_v1/__init__.py b/google/cloud/spanner_admin_database_v1/__init__.py
deleted file mode 100644
index bc3c6d5d50..0000000000
--- a/google/cloud/spanner_admin_database_v1/__init__.py
+++ /dev/null
@@ -1,260 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import sys
-
-import google.api_core as api_core
-
-from google.cloud.spanner_admin_database_v1 import gapic_version as package_version
-
-__version__ = package_version.__version__
-
-if sys.version_info >= (3, 8):  # pragma: NO COVER
-    from importlib import metadata
-else:  # pragma: NO COVER
-    # TODO(https://github.com/googleapis/python-api-core/issues/835): Remove
-    # this code path once we drop support for Python 3.7
-    import importlib_metadata as metadata
-
-from .services.database_admin import DatabaseAdminAsyncClient, DatabaseAdminClient
-from .types.backup import (
-    Backup,
-    BackupInfo,
-    BackupInstancePartition,
-    CopyBackupEncryptionConfig,
-    CopyBackupMetadata,
-    CopyBackupRequest,
-    CreateBackupEncryptionConfig,
-    CreateBackupMetadata,
-    CreateBackupRequest,
-    DeleteBackupRequest,
-    FullBackupSpec,
-    GetBackupRequest,
-    IncrementalBackupSpec,
-    ListBackupOperationsRequest,
-    ListBackupOperationsResponse,
-    ListBackupsRequest,
-    ListBackupsResponse,
-    UpdateBackupRequest,
-)
-from .types.backup_schedule import (
-    BackupSchedule,
-    BackupScheduleSpec,
-    CreateBackupScheduleRequest,
-    CrontabSpec,
-    DeleteBackupScheduleRequest,
-    GetBackupScheduleRequest,
-    ListBackupSchedulesRequest,
-    ListBackupSchedulesResponse,
-    UpdateBackupScheduleRequest,
-)
-from .types.common import (
-    DatabaseDialect,
-    EncryptionConfig,
-    EncryptionInfo,
-    OperationProgress,
-)
-from .types.spanner_database_admin import (
-    AddSplitPointsRequest,
-    AddSplitPointsResponse,
-    CreateDatabaseMetadata,
-    CreateDatabaseRequest,
-    Database,
-    DatabaseRole,
-    DdlStatementActionInfo,
-    DropDatabaseRequest,
-    GetDatabaseDdlRequest,
-    GetDatabaseDdlResponse,
-    GetDatabaseRequest,
-    InternalUpdateGraphOperationRequest,
-    InternalUpdateGraphOperationResponse,
-    ListDatabaseOperationsRequest,
-    ListDatabaseOperationsResponse,
-    ListDatabaseRolesRequest,
-    ListDatabaseRolesResponse,
-    ListDatabasesRequest,
-    ListDatabasesResponse,
-    OptimizeRestoredDatabaseMetadata,
-    RestoreDatabaseEncryptionConfig,
-    RestoreDatabaseMetadata,
-    RestoreDatabaseRequest,
-    RestoreInfo,
-    RestoreSourceType,
-    SplitPoints,
-    UpdateDatabaseDdlMetadata,
-    UpdateDatabaseDdlRequest,
-    UpdateDatabaseMetadata,
-    UpdateDatabaseRequest,
-)
-
-if hasattr(api_core, "check_python_version") and hasattr(
-    api_core, "check_dependency_versions"
-):  # pragma: NO COVER
-    api_core.check_python_version("google.cloud.spanner_admin_database_v1")  # type: ignore
-    api_core.check_dependency_versions("google.cloud.spanner_admin_database_v1")  # type: ignore
-else:  # pragma: NO COVER
-    # An older version of api_core is installed which does not define the
-    # functions above. We do equivalent checks manually.
-    try:
-        import sys
-        import warnings
-
-        _py_version_str = sys.version.split()[0]
-        _package_label = "google.cloud.spanner_admin_database_v1"
-        if sys.version_info < (3, 9):
-            warnings.warn(
-                "You are using a non-supported Python version "
-                + f"({_py_version_str}).  Google will not post any further "
-                + f"updates to {_package_label} supporting this Python version. "
-                + "Please upgrade to the latest Python version, or at "
-                + f"least to Python 3.9, and then update {_package_label}.",
-                FutureWarning,
-            )
-        if sys.version_info[:2] == (3, 9):
-            warnings.warn(
-                f"You are using a Python version ({_py_version_str}) "
-                + f"which Google will stop supporting in {_package_label} in "
-                + "January 2026. Please "
-                + "upgrade to the latest Python version, or at "
-                + "least to Python 3.10, before then, and "
-                + f"then update {_package_label}.",
-                FutureWarning,
-            )
-
-        def parse_version_to_tuple(version_string: str):
-            """Safely converts a semantic version string to a comparable tuple of integers.
-            Example: "4.25.8" -> (4, 25, 8)
-            Ignores non-numeric parts and handles common version formats.
-            Args:
-                version_string: Version string in the format "x.y.z" or "x.y.z<suffix>"
-            Returns:
-                Tuple of integers for the parsed version string.
-            """
-            parts = []
-            for part in version_string.split("."):
-                try:
-                    parts.append(int(part))
-                except ValueError:
-                    # If it's a non-numeric part (e.g., '1.0.0b1' -> 'b1'), stop here.
-                    # This is a simplification compared to 'packaging.parse_version', but sufficient
-                    # for comparing strictly numeric semantic versions.
-                    break
-            return tuple(parts)
-
-        def _get_version(dependency_name):
-            try:
-                version_string: str = metadata.version(dependency_name)
-                parsed_version = parse_version_to_tuple(version_string)
-                return (parsed_version, version_string)
-            except Exception:
-                # Catch exceptions from metadata.version() (e.g., PackageNotFoundError)
-                # or errors during parse_version_to_tuple
-                return (None, "--")
-
-        _dependency_package = "google.protobuf"
-        _next_supported_version = "4.25.8"
-        _next_supported_version_tuple = (4, 25, 8)
-        _recommendation = " (we recommend 6.x)"
-        (_version_used, _version_used_string) = _get_version(_dependency_package)
-        if _version_used and _version_used < _next_supported_version_tuple:
-            warnings.warn(
-                f"Package {_package_label} depends on "
-                + f"{_dependency_package}, currently installed at version "
-                + f"{_version_used_string}. Future updates to "
-                + f"{_package_label} will require {_dependency_package} at "
-                + f"version {_next_supported_version} or higher{_recommendation}."
-                + " Please ensure "
-                + "that either (a) your Python environment doesn't pin the "
-                + f"version of {_dependency_package}, so that updates to "
-                + f"{_package_label} can require the higher version, or "
-                + "(b) you manually update your Python environment to use at "
-                + f"least version {_next_supported_version} of "
-                + f"{_dependency_package}.",
-                FutureWarning,
-            )
-    except Exception:
-        warnings.warn(
-            "Could not determine the version of Python "
-            + "currently being used. To continue receiving "
-            + "updates for {_package_label}, ensure you are "
-            + "using a supported version of Python; see "
-            + "https://devguide.python.org/versions/"
-        )
-
-__all__ = (
-    "DatabaseAdminAsyncClient",
-    "AddSplitPointsRequest",
-    "AddSplitPointsResponse",
-    "Backup",
-    "BackupInfo",
-    "BackupInstancePartition",
-    "BackupSchedule",
-    "BackupScheduleSpec",
-    "CopyBackupEncryptionConfig",
-    "CopyBackupMetadata",
-    "CopyBackupRequest",
-    "CreateBackupEncryptionConfig",
-    "CreateBackupMetadata",
-    "CreateBackupRequest",
-    "CreateBackupScheduleRequest",
-    "CreateDatabaseMetadata",
-    "CreateDatabaseRequest",
-    "CrontabSpec",
-    "Database",
-    "DatabaseAdminClient",
-    "DatabaseDialect",
-    "DatabaseRole",
-    "DdlStatementActionInfo",
-    "DeleteBackupRequest",
-    "DeleteBackupScheduleRequest",
-    "DropDatabaseRequest",
-    "EncryptionConfig",
-    "EncryptionInfo",
-    "FullBackupSpec",
-    "GetBackupRequest",
-    "GetBackupScheduleRequest",
-    "GetDatabaseDdlRequest",
-    "GetDatabaseDdlResponse",
-    "GetDatabaseRequest",
-    "IncrementalBackupSpec",
-    "InternalUpdateGraphOperationRequest",
-    "InternalUpdateGraphOperationResponse",
-    "ListBackupOperationsRequest",
-    "ListBackupOperationsResponse",
-    "ListBackupSchedulesRequest",
-    "ListBackupSchedulesResponse",
-    "ListBackupsRequest",
-    "ListBackupsResponse",
-    "ListDatabaseOperationsRequest",
-    "ListDatabaseOperationsResponse",
-    "ListDatabaseRolesRequest",
-    "ListDatabaseRolesResponse",
-    "ListDatabasesRequest",
-    "ListDatabasesResponse",
-    "OperationProgress",
-    "OptimizeRestoredDatabaseMetadata",
-    "RestoreDatabaseEncryptionConfig",
-    "RestoreDatabaseMetadata",
-    "RestoreDatabaseRequest",
-    "RestoreInfo",
-    "RestoreSourceType",
-    "SplitPoints",
-    "UpdateBackupRequest",
-    "UpdateBackupScheduleRequest",
-    "UpdateDatabaseDdlMetadata",
-    "UpdateDatabaseDdlRequest",
-    "UpdateDatabaseMetadata",
-    "UpdateDatabaseRequest",
-)
diff --git a/google/cloud/spanner_admin_database_v1/gapic_metadata.json b/google/cloud/spanner_admin_database_v1/gapic_metadata.json
deleted file mode 100644
index 027a4f612b..0000000000
--- a/google/cloud/spanner_admin_database_v1/gapic_metadata.json
+++ /dev/null
@@ -1,433 +0,0 @@
- {
-  "comment": "This file maps proto services/RPCs to the corresponding library clients/methods",
-  "language": "python",
-  "libraryPackage": "google.cloud.spanner_admin_database_v1",
-  "protoPackage": "google.spanner.admin.database.v1",
-  "schema": "1.0",
-  "services": {
-    "DatabaseAdmin": {
-      "clients": {
-        "grpc": {
-          "libraryClient": "DatabaseAdminClient",
-          "rpcs": {
-            "AddSplitPoints": {
-              "methods": [
-                "add_split_points"
-              ]
-            },
-            "CopyBackup": {
-              "methods": [
-                "copy_backup"
-              ]
-            },
-            "CreateBackup": {
-              "methods": [
-                "create_backup"
-              ]
-            },
-            "CreateBackupSchedule": {
-              "methods": [
-                "create_backup_schedule"
-              ]
-            },
-            "CreateDatabase": {
-              "methods": [
-                "create_database"
-              ]
-            },
-            "DeleteBackup": {
-              "methods": [
-                "delete_backup"
-              ]
-            },
-            "DeleteBackupSchedule": {
-              "methods": [
-                "delete_backup_schedule"
-              ]
-            },
-            "DropDatabase": {
-              "methods": [
-                "drop_database"
-              ]
-            },
-            "GetBackup": {
-              "methods": [
-                "get_backup"
-              ]
-            },
-            "GetBackupSchedule": {
-              "methods": [
-                "get_backup_schedule"
-              ]
-            },
-            "GetDatabase": {
-              "methods": [
-                "get_database"
-              ]
-            },
-            "GetDatabaseDdl": {
-              "methods": [
-                "get_database_ddl"
-              ]
-            },
-            "GetIamPolicy": {
-              "methods": [
-                "get_iam_policy"
-              ]
-            },
-            "InternalUpdateGraphOperation": {
-              "methods": [
-                "internal_update_graph_operation"
-              ]
-            },
-            "ListBackupOperations": {
-              "methods": [
-                "list_backup_operations"
-              ]
-            },
-            "ListBackupSchedules": {
-              "methods": [
-                "list_backup_schedules"
-              ]
-            },
-            "ListBackups": {
-              "methods": [
-                "list_backups"
-              ]
-            },
-            "ListDatabaseOperations": {
-              "methods": [
-                "list_database_operations"
-              ]
-            },
-            "ListDatabaseRoles": {
-              "methods": [
-                "list_database_roles"
-              ]
-            },
-            "ListDatabases": {
-              "methods": [
-                "list_databases"
-              ]
-            },
-            "RestoreDatabase": {
-              "methods": [
-                "restore_database"
-              ]
-            },
-            "SetIamPolicy": {
-              "methods": [
-                "set_iam_policy"
-              ]
-            },
-            "TestIamPermissions": {
-              "methods": [
-                "test_iam_permissions"
-              ]
-            },
-            "UpdateBackup": {
-              "methods": [
-                "update_backup"
-              ]
-            },
-            "UpdateBackupSchedule": {
-              "methods": [
-                "update_backup_schedule"
-              ]
-            },
-            "UpdateDatabase": {
-              "methods": [
-                "update_database"
-              ]
-            },
-            "UpdateDatabaseDdl": {
-              "methods": [
-                "update_database_ddl"
-              ]
-            }
-          }
-        },
-        "grpc-async": {
-          "libraryClient": "DatabaseAdminAsyncClient",
-          "rpcs": {
-            "AddSplitPoints": {
-              "methods": [
-                "add_split_points"
-              ]
-            },
-            "CopyBackup": {
-              "methods": [
-                "copy_backup"
-              ]
-            },
-            "CreateBackup": {
-              "methods": [
-                "create_backup"
-              ]
-            },
-            "CreateBackupSchedule": {
-              "methods": [
-                "create_backup_schedule"
-              ]
-            },
-            "CreateDatabase": {
-              "methods": [
-                "create_database"
-              ]
-            },
-            "DeleteBackup": {
-              "methods": [
-                "delete_backup"
-              ]
-            },
-            "DeleteBackupSchedule": {
-              "methods": [
-                "delete_backup_schedule"
-              ]
-            },
-            "DropDatabase": {
-              "methods": [
-                "drop_database"
-              ]
-            },
-            "GetBackup": {
-              "methods": [
-                "get_backup"
-              ]
-            },
-            "GetBackupSchedule": {
-              "methods": [
-                "get_backup_schedule"
-              ]
-            },
-            "GetDatabase": {
-              "methods": [
-                "get_database"
-              ]
-            },
-            "GetDatabaseDdl": {
-              "methods": [
-                "get_database_ddl"
-              ]
-            },
-            "GetIamPolicy": {
-              "methods": [
-                "get_iam_policy"
-              ]
-            },
-            "InternalUpdateGraphOperation": {
-              "methods": [
-                "internal_update_graph_operation"
-              ]
-            },
-            "ListBackupOperations": {
-              "methods": [
-                "list_backup_operations"
-              ]
-            },
-            "ListBackupSchedules": {
-              "methods": [
-                "list_backup_schedules"
-              ]
-            },
-            "ListBackups": {
-              "methods": [
-                "list_backups"
-              ]
-            },
-            "ListDatabaseOperations": {
-              "methods": [
-                "list_database_operations"
-              ]
-            },
-            "ListDatabaseRoles": {
-              "methods": [
-                "list_database_roles"
-              ]
-            },
-            "ListDatabases": {
-              "methods": [
-                "list_databases"
-              ]
-            },
-            "RestoreDatabase": {
-              "methods": [
-                "restore_database"
-              ]
-            },
-            "SetIamPolicy": {
-              "methods": [
-                "set_iam_policy"
-              ]
-            },
-            "TestIamPermissions": {
-              "methods": [
-                "test_iam_permissions"
-              ]
-            },
-            "UpdateBackup": {
-              "methods": [
-                "update_backup"
-              ]
-            },
-            "UpdateBackupSchedule": {
-              "methods": [
-                "update_backup_schedule"
-              ]
-            },
-            "UpdateDatabase": {
-              "methods": [
-                "update_database"
-              ]
-            },
-            "UpdateDatabaseDdl": {
-              "methods": [
-                "update_database_ddl"
-              ]
-            }
-          }
-        },
-        "rest": {
-          "libraryClient": "DatabaseAdminClient",
-          "rpcs": {
-            "AddSplitPoints": {
-              "methods": [
-                "add_split_points"
-              ]
-            },
-            "CopyBackup": {
-              "methods": [
-                "copy_backup"
-              ]
-            },
-            "CreateBackup": {
-              "methods": [
-                "create_backup"
-              ]
-            },
-            "CreateBackupSchedule": {
-              "methods": [
-                "create_backup_schedule"
-              ]
-            },
-            "CreateDatabase": {
-              "methods": [
-                "create_database"
-              ]
-            },
-            "DeleteBackup": {
-              "methods": [
-                "delete_backup"
-              ]
-            },
-            "DeleteBackupSchedule": {
-              "methods": [
-                "delete_backup_schedule"
-              ]
-            },
-            "DropDatabase": {
-              "methods": [
-                "drop_database"
-              ]
-            },
-            "GetBackup": {
-              "methods": [
-                "get_backup"
-              ]
-            },
-            "GetBackupSchedule": {
-              "methods": [
-                "get_backup_schedule"
-              ]
-            },
-            "GetDatabase": {
-              "methods": [
-                "get_database"
-              ]
-            },
-            "GetDatabaseDdl": {
-              "methods": [
-                "get_database_ddl"
-              ]
-            },
-            "GetIamPolicy": {
-              "methods": [
-                "get_iam_policy"
-              ]
-            },
-            "InternalUpdateGraphOperation": {
-              "methods": [
-                "internal_update_graph_operation"
-              ]
-            },
-            "ListBackupOperations": {
-              "methods": [
-                "list_backup_operations"
-              ]
-            },
-            "ListBackupSchedules": {
-              "methods": [
-                "list_backup_schedules"
-              ]
-            },
-            "ListBackups": {
-              "methods": [
-                "list_backups"
-              ]
-            },
-            "ListDatabaseOperations": {
-              "methods": [
-                "list_database_operations"
-              ]
-            },
-            "ListDatabaseRoles": {
-              "methods": [
-                "list_database_roles"
-              ]
-            },
-            "ListDatabases": {
-              "methods": [
-                "list_databases"
-              ]
-            },
-            "RestoreDatabase": {
-              "methods": [
-                "restore_database"
-              ]
-            },
-            "SetIamPolicy": {
-              "methods": [
-                "set_iam_policy"
-              ]
-            },
-            "TestIamPermissions": {
-              "methods": [
-                "test_iam_permissions"
-              ]
-            },
-            "UpdateBackup": {
-              "methods": [
-                "update_backup"
-              ]
-            },
-            "UpdateBackupSchedule": {
-              "methods": [
-                "update_backup_schedule"
-              ]
-            },
-            "UpdateDatabase": {
-              "methods": [
-                "update_database"
-              ]
-            },
-            "UpdateDatabaseDdl": {
-              "methods": [
-                "update_database_ddl"
-              ]
-            }
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/google/cloud/spanner_admin_database_v1/gapic_version.py b/google/cloud/spanner_admin_database_v1/gapic_version.py
deleted file mode 100644
index bf54fc40ae..0000000000
--- a/google/cloud/spanner_admin_database_v1/gapic_version.py
+++ /dev/null
@@ -1,16 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-__version__ = "3.63.0"  # {x-release-please-version}
diff --git a/google/cloud/spanner_admin_database_v1/py.typed b/google/cloud/spanner_admin_database_v1/py.typed
deleted file mode 100644
index 29f334aad6..0000000000
--- a/google/cloud/spanner_admin_database_v1/py.typed
+++ /dev/null
@@ -1,2 +0,0 @@
-# Marker file for PEP 561.
-# The google-cloud-spanner-admin-database package uses inline types.
diff --git a/google/cloud/spanner_admin_database_v1/services/__init__.py b/google/cloud/spanner_admin_database_v1/services/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/__init__.py b/google/cloud/spanner_admin_database_v1/services/database_admin/__init__.py
deleted file mode 100644
index af2ac7d91d..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/__init__.py
+++ /dev/null
@@ -1,22 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from .async_client import DatabaseAdminAsyncClient
-from .client import DatabaseAdminClient
-
-__all__ = (
-    "DatabaseAdminClient",
-    "DatabaseAdminAsyncClient",
-)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/async_client.py b/google/cloud/spanner_admin_database_v1/services/database_admin/async_client.py
deleted file mode 100644
index 1a5b4896d3..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/async_client.py
+++ /dev/null
@@ -1,4217 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-import logging as std_logging
-import re
-from typing import (
-    Callable,
-    Dict,
-    Mapping,
-    MutableMapping,
-    MutableSequence,
-    Optional,
-    Sequence,
-    Tuple,
-    Type,
-    Union,
-)
-import uuid
-
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1
-from google.api_core import retry_async as retries
-from google.api_core.client_options import ClientOptions
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-
-from google.cloud.spanner_admin_database_v1 import gapic_version as package_version
-
-try:
-    OptionalRetry = Union[retries.AsyncRetry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.AsyncRetry, object, None]  # type: ignore
-
-from google.api_core import operation  # type: ignore
-from google.api_core import operation_async  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import duration_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.services.database_admin import pagers
-from google.cloud.spanner_admin_database_v1.types import common, spanner_database_admin
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-
-from .client import DatabaseAdminClient
-from .transports.base import DEFAULT_CLIENT_INFO, DatabaseAdminTransport
-from .transports.grpc_asyncio import DatabaseAdminGrpcAsyncIOTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class DatabaseAdminAsyncClient:
-    """Cloud Spanner Database Admin API
-
-    The Cloud Spanner Database Admin API can be used to:
-
-    - create, drop, and list databases
-    - update the schema of pre-existing databases
-    - create, delete, copy and list backups for a database
-    - restore a database from an existing backup
-    """
-
-    _client: DatabaseAdminClient
-
-    # Copy defaults from the synchronous client for use here.
-    # Note: DEFAULT_ENDPOINT is deprecated. Use _DEFAULT_ENDPOINT_TEMPLATE instead.
-    DEFAULT_ENDPOINT = DatabaseAdminClient.DEFAULT_ENDPOINT
-    DEFAULT_MTLS_ENDPOINT = DatabaseAdminClient.DEFAULT_MTLS_ENDPOINT
-    _DEFAULT_ENDPOINT_TEMPLATE = DatabaseAdminClient._DEFAULT_ENDPOINT_TEMPLATE
-    _DEFAULT_UNIVERSE = DatabaseAdminClient._DEFAULT_UNIVERSE
-
-    backup_path = staticmethod(DatabaseAdminClient.backup_path)
-    parse_backup_path = staticmethod(DatabaseAdminClient.parse_backup_path)
-    backup_schedule_path = staticmethod(DatabaseAdminClient.backup_schedule_path)
-    parse_backup_schedule_path = staticmethod(
-        DatabaseAdminClient.parse_backup_schedule_path
-    )
-    crypto_key_path = staticmethod(DatabaseAdminClient.crypto_key_path)
-    parse_crypto_key_path = staticmethod(DatabaseAdminClient.parse_crypto_key_path)
-    crypto_key_version_path = staticmethod(DatabaseAdminClient.crypto_key_version_path)
-    parse_crypto_key_version_path = staticmethod(
-        DatabaseAdminClient.parse_crypto_key_version_path
-    )
-    database_path = staticmethod(DatabaseAdminClient.database_path)
-    parse_database_path = staticmethod(DatabaseAdminClient.parse_database_path)
-    database_role_path = staticmethod(DatabaseAdminClient.database_role_path)
-    parse_database_role_path = staticmethod(
-        DatabaseAdminClient.parse_database_role_path
-    )
-    instance_path = staticmethod(DatabaseAdminClient.instance_path)
-    parse_instance_path = staticmethod(DatabaseAdminClient.parse_instance_path)
-    instance_partition_path = staticmethod(DatabaseAdminClient.instance_partition_path)
-    parse_instance_partition_path = staticmethod(
-        DatabaseAdminClient.parse_instance_partition_path
-    )
-    common_billing_account_path = staticmethod(
-        DatabaseAdminClient.common_billing_account_path
-    )
-    parse_common_billing_account_path = staticmethod(
-        DatabaseAdminClient.parse_common_billing_account_path
-    )
-    common_folder_path = staticmethod(DatabaseAdminClient.common_folder_path)
-    parse_common_folder_path = staticmethod(
-        DatabaseAdminClient.parse_common_folder_path
-    )
-    common_organization_path = staticmethod(
-        DatabaseAdminClient.common_organization_path
-    )
-    parse_common_organization_path = staticmethod(
-        DatabaseAdminClient.parse_common_organization_path
-    )
-    common_project_path = staticmethod(DatabaseAdminClient.common_project_path)
-    parse_common_project_path = staticmethod(
-        DatabaseAdminClient.parse_common_project_path
-    )
-    common_location_path = staticmethod(DatabaseAdminClient.common_location_path)
-    parse_common_location_path = staticmethod(
-        DatabaseAdminClient.parse_common_location_path
-    )
-
-    @classmethod
-    def from_service_account_info(cls, info: dict, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            info.
-
-        Args:
-            info (dict): The service account private key info.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            DatabaseAdminAsyncClient: The constructed client.
-        """
-        return DatabaseAdminClient.from_service_account_info.__func__(DatabaseAdminAsyncClient, info, *args, **kwargs)  # type: ignore
-
-    @classmethod
-    def from_service_account_file(cls, filename: str, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            file.
-
-        Args:
-            filename (str): The path to the service account private key json
-                file.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            DatabaseAdminAsyncClient: The constructed client.
-        """
-        return DatabaseAdminClient.from_service_account_file.__func__(DatabaseAdminAsyncClient, filename, *args, **kwargs)  # type: ignore
-
-    from_service_account_json = from_service_account_file
-
-    @classmethod
-    def get_mtls_endpoint_and_cert_source(
-        cls, client_options: Optional[ClientOptions] = None
-    ):
-        """Return the API endpoint and client cert source for mutual TLS.
-
-        The client cert source is determined in the following order:
-        (1) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not "true", the
-        client cert source is None.
-        (2) if `client_options.client_cert_source` is provided, use the provided one; if the
-        default client cert source exists, use the default one; otherwise the client cert
-        source is None.
-
-        The API endpoint is determined in the following order:
-        (1) if `client_options.api_endpoint` if provided, use the provided one.
-        (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variable is "never", use the default API
-        endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
-        use the default API endpoint.
-
-        More details can be found at https://google.aip.dev/auth/4114.
-
-        Args:
-            client_options (google.api_core.client_options.ClientOptions): Custom options for the
-                client. Only the `api_endpoint` and `client_cert_source` properties may be used
-                in this method.
-
-        Returns:
-            Tuple[str, Callable[[], Tuple[bytes, bytes]]]: returns the API endpoint and the
-                client cert source to use.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If any errors happen.
-        """
-        return DatabaseAdminClient.get_mtls_endpoint_and_cert_source(client_options)  # type: ignore
-
-    @property
-    def transport(self) -> DatabaseAdminTransport:
-        """Returns the transport used by the client instance.
-
-        Returns:
-            DatabaseAdminTransport: The transport used by the client instance.
-        """
-        return self._client.transport
-
-    @property
-    def api_endpoint(self):
-        """Return the API endpoint used by the client instance.
-
-        Returns:
-            str: The API endpoint used by the client instance.
-        """
-        return self._client._api_endpoint
-
-    @property
-    def universe_domain(self) -> str:
-        """Return the universe domain used by the client instance.
-
-        Returns:
-            str: The universe domain used
-                by the client instance.
-        """
-        return self._client._universe_domain
-
-    get_transport_class = DatabaseAdminClient.get_transport_class
-
-    def __init__(
-        self,
-        *,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        transport: Optional[
-            Union[str, DatabaseAdminTransport, Callable[..., DatabaseAdminTransport]]
-        ] = "grpc_asyncio",
-        client_options: Optional[ClientOptions] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-    ) -> None:
-        """Instantiates the database admin async client.
-
-        Args:
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            transport (Optional[Union[str,DatabaseAdminTransport,Callable[..., DatabaseAdminTransport]]]):
-                The transport to use, or a Callable that constructs and returns a new transport to use.
-                If a Callable is given, it will be called with the same set of initialization
-                arguments as used in the DatabaseAdminTransport constructor.
-                If set to None, a transport is chosen automatically.
-            client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]):
-                Custom options for the client.
-
-                1. The ``api_endpoint`` property can be used to override the
-                default endpoint provided by the client when ``transport`` is
-                not explicitly provided. Only if this property is not set and
-                ``transport`` was not explicitly provided, the endpoint is
-                determined by the GOOGLE_API_USE_MTLS_ENDPOINT environment
-                variable, which have one of the following values:
-                "always" (always use the default mTLS endpoint), "never" (always
-                use the default regular endpoint) and "auto" (auto-switch to the
-                default mTLS endpoint if client certificate is present; this is
-                the default value).
-
-                2. If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
-                is "true", then the ``client_cert_source`` property can be used
-                to provide a client certificate for mTLS transport. If
-                not provided, the default SSL client certificate will be used if
-                present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
-                set, no client certificate will be used.
-
-                3. The ``universe_domain`` property can be used to override the
-                default "googleapis.com" universe. Note that ``api_endpoint``
-                property still takes precedence; and ``universe_domain`` is
-                currently not supported for mTLS.
-
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-
-        Raises:
-            google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
-                creation failed for any reason.
-        """
-        self._client = DatabaseAdminClient(
-            credentials=credentials,
-            transport=transport,
-            client_options=client_options,
-            client_info=client_info,
-        )
-
-        if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        ):  # pragma: NO COVER
-            _LOGGER.debug(
-                "Created client `google.spanner.admin.database_v1.DatabaseAdminAsyncClient`.",
-                extra={
-                    "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                    "universeDomain": getattr(
-                        self._client._transport._credentials, "universe_domain", ""
-                    ),
-                    "credentialsType": f"{type(self._client._transport._credentials).__module__}.{type(self._client._transport._credentials).__qualname__}",
-                    "credentialsInfo": getattr(
-                        self.transport._credentials, "get_cred_info", lambda: None
-                    )(),
-                }
-                if hasattr(self._client._transport, "_credentials")
-                else {
-                    "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                    "credentialsType": None,
-                },
-            )
-
-    async def list_databases(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.ListDatabasesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListDatabasesAsyncPager:
-        r"""Lists Cloud Spanner databases.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_list_databases():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListDatabasesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_databases(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.ListDatabasesRequest, dict]]):
-                The request object. The request for
-                [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-            parent (:class:`str`):
-                Required. The instance whose databases should be listed.
-                Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListDatabasesAsyncPager:
-                The response for
-                   [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.ListDatabasesRequest):
-            request = spanner_database_admin.ListDatabasesRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_databases
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListDatabasesAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def create_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.CreateDatabaseRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        create_statement: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Creates a new Cloud Spanner database and starts to prepare it
-        for serving. The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format ``<database_name>/operations/<operation_id>`` and can be
-        used to track preparation of the database. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateDatabaseMetadata][google.spanner.admin.database.v1.CreateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_create_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CreateDatabaseRequest(
-                    parent="parent_value",
-                    create_statement="create_statement_value",
-                )
-
-                # Make the request
-                operation = client.create_database(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.CreateDatabaseRequest, dict]]):
-                The request object. The request for
-                [CreateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.CreateDatabase].
-            parent (:class:`str`):
-                Required. The name of the instance that will serve the
-                new database. Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            create_statement (:class:`str`):
-                Required. A ``CREATE DATABASE`` statement, which
-                specifies the ID of the new database. The database ID
-                must conform to the regular expression
-                ``[a-z][a-z0-9_\-]*[a-z0-9]`` and be between 2 and 30
-                characters in length. If the database ID is a reserved
-                word or if it contains a hyphen, the database ID must be
-                enclosed in backticks (:literal:`\``).
-
-                This corresponds to the ``create_statement`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Database`
-                A Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, create_statement]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.CreateDatabaseRequest):
-            request = spanner_database_admin.CreateDatabaseRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if create_statement is not None:
-            request.create_statement = create_statement
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.create_database
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_database_admin.Database,
-            metadata_type=spanner_database_admin.CreateDatabaseMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.GetDatabaseRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.Database:
-        r"""Gets the state of a Cloud Spanner database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_get_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetDatabaseRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = await client.get_database(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.GetDatabaseRequest, dict]]):
-                The request object. The request for
-                [GetDatabase][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabase].
-            name (:class:`str`):
-                Required. The name of the requested database. Values are
-                of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.Database:
-                A Cloud Spanner database.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.GetDatabaseRequest):
-            request = spanner_database_admin.GetDatabaseRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_database
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def update_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.UpdateDatabaseRequest, dict]
-        ] = None,
-        *,
-        database: Optional[spanner_database_admin.Database] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Updates a Cloud Spanner database. The returned [long-running
-        operation][google.longrunning.Operation] can be used to track
-        the progress of updating the database. If the named database
-        does not exist, returns ``NOT_FOUND``.
-
-        While the operation is pending:
-
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field is set to true.
-        - Cancelling the operation is best-effort. If the cancellation
-          succeeds, the operation metadata's
-          [cancel_time][google.spanner.admin.database.v1.UpdateDatabaseMetadata.cancel_time]
-          is set, the updates are reverted, and the operation terminates
-          with a ``CANCELLED`` status.
-        - New UpdateDatabase requests will return a
-          ``FAILED_PRECONDITION`` error until the pending operation is
-          done (returns successfully or with error).
-        - Reading the database via the API continues to give the
-          pre-request values.
-
-        Upon completion of the returned operation:
-
-        - The new values are in effect and readable via the API.
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field becomes false.
-
-        The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``
-        and can be used to track the database modification. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseMetadata][google.spanner.admin.database.v1.UpdateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_update_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                database = spanner_admin_database_v1.Database()
-                database.name = "name_value"
-
-                request = spanner_admin_database_v1.UpdateDatabaseRequest(
-                    database=database,
-                )
-
-                # Make the request
-                operation = client.update_database(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.UpdateDatabaseRequest, dict]]):
-                The request object. The request for
-                [UpdateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabase].
-            database (:class:`google.cloud.spanner_admin_database_v1.types.Database`):
-                Required. The database to update. The ``name`` field of
-                the database is of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (:class:`google.protobuf.field_mask_pb2.FieldMask`):
-                Required. The list of fields to update. Currently, only
-                ``enable_drop_protection`` field can be updated.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Database`
-                A Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.UpdateDatabaseRequest):
-            request = spanner_database_admin.UpdateDatabaseRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-        if update_mask is not None:
-            request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.update_database
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("database.name", request.database.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_database_admin.Database,
-            metadata_type=spanner_database_admin.UpdateDatabaseMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def update_database_ddl(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.UpdateDatabaseDdlRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        statements: Optional[MutableSequence[str]] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Updates the schema of a Cloud Spanner database by
-        creating/altering/dropping tables, columns, indexes, etc. The
-        returned [long-running operation][google.longrunning.Operation]
-        will have a name of the format
-        ``<database_name>/operations/<operation_id>`` and can be used to
-        track execution of the schema change(s). The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseDdlMetadata][google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata].
-        The operation has no response.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_update_database_ddl():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.UpdateDatabaseDdlRequest(
-                    database="database_value",
-                    statements=['statements_value1', 'statements_value2'],
-                )
-
-                # Make the request
-                operation = client.update_database_ddl(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.UpdateDatabaseDdlRequest, dict]]):
-                The request object. Enqueues the given DDL statements to be applied, in
-                order but not necessarily all at once, to the database
-                schema at some point (or points) in the future. The
-                server checks that the statements are executable
-                (syntactically valid, name tables that exist, etc.)
-                before enqueueing them, but they may still fail upon
-                later execution (e.g., if a statement from another batch
-                of statements is applied first and it conflicts in some
-                way, or if there is some data-related problem like a
-                ``NULL`` value in a column to which ``NOT NULL`` would
-                be added). If a statement fails, all subsequent
-                statements in the batch are automatically cancelled.
-
-                Each batch of statements is assigned a name which can be
-                used with the
-                [Operations][google.longrunning.Operations] API to
-                monitor progress. See the
-                [operation_id][google.spanner.admin.database.v1.UpdateDatabaseDdlRequest.operation_id]
-                field for more details.
-            database (:class:`str`):
-                Required. The database to update.
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            statements (:class:`MutableSequence[str]`):
-                Required. DDL statements to be
-                applied to the database.
-
-                This corresponds to the ``statements`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.protobuf.empty_pb2.Empty` A generic empty message that you can re-use to avoid defining duplicated
-                   empty messages in your APIs. A typical example is to
-                   use it as the request or the response type of an API
-                   method. For instance:
-
-                      service Foo {
-                         rpc Bar(google.protobuf.Empty) returns
-                         (google.protobuf.Empty);
-
-                      }
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, statements]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.UpdateDatabaseDdlRequest):
-            request = spanner_database_admin.UpdateDatabaseDdlRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-        if statements:
-            request.statements.extend(statements)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.update_database_ddl
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            empty_pb2.Empty,
-            metadata_type=spanner_database_admin.UpdateDatabaseDdlMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def drop_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.DropDatabaseRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Drops (aka deletes) a Cloud Spanner database. Completed backups
-        for the database will be retained according to their
-        ``expire_time``. Note: Cloud Spanner might continue to accept
-        requests for a few seconds after the database has been deleted.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_drop_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.DropDatabaseRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                await client.drop_database(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.DropDatabaseRequest, dict]]):
-                The request object. The request for
-                [DropDatabase][google.spanner.admin.database.v1.DatabaseAdmin.DropDatabase].
-            database (:class:`str`):
-                Required. The database to be dropped.
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.DropDatabaseRequest):
-            request = spanner_database_admin.DropDatabaseRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.drop_database
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def get_database_ddl(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.GetDatabaseDdlRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.GetDatabaseDdlResponse:
-        r"""Returns the schema of a Cloud Spanner database as a list of
-        formatted DDL statements. This method does not show pending
-        schema updates, those may be queried using the
-        [Operations][google.longrunning.Operations] API.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_get_database_ddl():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetDatabaseDdlRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                response = await client.get_database_ddl(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.GetDatabaseDdlRequest, dict]]):
-                The request object. The request for
-                [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-            database (:class:`str`):
-                Required. The database whose schema we wish to get.
-                Values are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.GetDatabaseDdlResponse:
-                The response for
-                   [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.GetDatabaseDdlRequest):
-            request = spanner_database_admin.GetDatabaseDdlRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_database_ddl
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def set_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.SetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Sets the access control policy on a database or backup resource.
-        Replaces any existing policy.
-
-        Authorization requires ``spanner.databases.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            async def sample_set_iam_policy():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.SetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = await client.set_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.iam.v1.iam_policy_pb2.SetIamPolicyRequest, dict]]):
-                The request object. Request message for ``SetIamPolicy`` method.
-            resource (:class:`str`):
-                REQUIRED: The resource for which the
-                policy is being specified. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - The request isn't a proto-plus wrapped type,
-        #   so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = iam_policy_pb2.SetIamPolicyRequest(**request)
-        elif not request:
-            request = iam_policy_pb2.SetIamPolicyRequest(resource=resource)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.set_iam_policy
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.GetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Gets the access control policy for a database or backup
-        resource. Returns an empty policy if a database or backup exists
-        but does not have a policy set.
-
-        Authorization requires ``spanner.databases.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            async def sample_get_iam_policy():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.GetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = await client.get_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.iam.v1.iam_policy_pb2.GetIamPolicyRequest, dict]]):
-                The request object. Request message for ``GetIamPolicy`` method.
-            resource (:class:`str`):
-                REQUIRED: The resource for which the
-                policy is being requested. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - The request isn't a proto-plus wrapped type,
-        #   so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = iam_policy_pb2.GetIamPolicyRequest(**request)
-        elif not request:
-            request = iam_policy_pb2.GetIamPolicyRequest(resource=resource)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_iam_policy
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def test_iam_permissions(
-        self,
-        request: Optional[Union[iam_policy_pb2.TestIamPermissionsRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        permissions: Optional[MutableSequence[str]] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> iam_policy_pb2.TestIamPermissionsResponse:
-        r"""Returns permissions that the caller has on the specified
-        database or backup resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner database
-        will result in a NOT_FOUND error if the user has
-        ``spanner.databases.list`` permission on the containing Cloud
-        Spanner instance. Otherwise returns an empty set of permissions.
-        Calling this method on a backup that does not exist will result
-        in a NOT_FOUND error if the user has ``spanner.backups.list``
-        permission on the containing instance.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            async def sample_test_iam_permissions():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.TestIamPermissionsRequest(
-                    resource="resource_value",
-                    permissions=['permissions_value1', 'permissions_value2'],
-                )
-
-                # Make the request
-                response = await client.test_iam_permissions(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.iam.v1.iam_policy_pb2.TestIamPermissionsRequest, dict]]):
-                The request object. Request message for ``TestIamPermissions`` method.
-            resource (:class:`str`):
-                REQUIRED: The resource for which the
-                policy detail is being requested. See
-                the operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            permissions (:class:`MutableSequence[str]`):
-                The set of permissions to check for the ``resource``.
-                Permissions with wildcards (such as '*' or 'storage.*')
-                are not allowed. For more information see `IAM
-                Overview <https://cloud.google.com/iam/docs/overview#permissions>`__.
-
-                This corresponds to the ``permissions`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.iam_policy_pb2.TestIamPermissionsResponse:
-                Response message for TestIamPermissions method.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource, permissions]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - The request isn't a proto-plus wrapped type,
-        #   so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = iam_policy_pb2.TestIamPermissionsRequest(**request)
-        elif not request:
-            request = iam_policy_pb2.TestIamPermissionsRequest(
-                resource=resource, permissions=permissions
-            )
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.test_iam_permissions
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def create_backup(
-        self,
-        request: Optional[Union[gsad_backup.CreateBackupRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        backup: Optional[gsad_backup.Backup] = None,
-        backup_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Starts creating a new Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track creation of the backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        creation and delete the backup. There can be only one pending
-        backup creation per database. Backup creation of different
-        databases can run concurrently.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_create_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CreateBackupRequest(
-                    parent="parent_value",
-                    backup_id="backup_id_value",
-                )
-
-                # Make the request
-                operation = client.create_backup(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.CreateBackupRequest, dict]]):
-                The request object. The request for
-                [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup].
-            parent (:class:`str`):
-                Required. The name of the instance in which the backup
-                will be created. This must be the same instance that
-                contains the database the backup will be created from.
-                The backup will be stored in the location(s) specified
-                in the instance configuration of this instance. Values
-                are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup (:class:`google.cloud.spanner_admin_database_v1.types.Backup`):
-                Required. The backup to create.
-                This corresponds to the ``backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_id (:class:`str`):
-                Required. The id of the backup to be created. The
-                ``backup_id`` appended to ``parent`` forms the full
-                backup name of the form
-                ``projects/<project>/instances/<instance>/backups/<backup_id>``.
-
-                This corresponds to the ``backup_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Backup`
-                A backup of a Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, backup, backup_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup.CreateBackupRequest):
-            request = gsad_backup.CreateBackupRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if backup is not None:
-            request.backup = backup
-        if backup_id is not None:
-            request.backup_id = backup_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.create_backup
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            gsad_backup.Backup,
-            metadata_type=gsad_backup.CreateBackupMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def copy_backup(
-        self,
-        request: Optional[Union[backup.CopyBackupRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        backup_id: Optional[str] = None,
-        source_backup: Optional[str] = None,
-        expire_time: Optional[timestamp_pb2.Timestamp] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Starts copying a Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track copying of the backup. The operation is
-        associated with the destination backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        copying and delete the destination backup. Concurrent CopyBackup
-        requests can run on the same source backup.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_copy_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CopyBackupRequest(
-                    parent="parent_value",
-                    backup_id="backup_id_value",
-                    source_backup="source_backup_value",
-                )
-
-                # Make the request
-                operation = client.copy_backup(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.CopyBackupRequest, dict]]):
-                The request object. The request for
-                [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
-            parent (:class:`str`):
-                Required. The name of the destination instance that will
-                contain the backup copy. Values are of the form:
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_id (:class:`str`):
-                Required. The id of the backup copy. The ``backup_id``
-                appended to ``parent`` forms the full backup_uri of the
-                form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``backup_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            source_backup (:class:`str`):
-                Required. The source backup to be copied. The source
-                backup needs to be in READY state for it to be copied.
-                Once CopyBackup is in progress, the source backup cannot
-                be deleted or cleaned up on expiration until CopyBackup
-                is finished. Values are of the form:
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``source_backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            expire_time (:class:`google.protobuf.timestamp_pb2.Timestamp`):
-                Required. The expiration time of the backup in
-                microsecond granularity. The expiration time must be at
-                least 6 hours and at most 366 days from the
-                ``create_time`` of the source backup. Once the
-                ``expire_time`` has passed, the backup is eligible to be
-                automatically deleted by Cloud Spanner to free the
-                resources used by the backup.
-
-                This corresponds to the ``expire_time`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Backup`
-                A backup of a Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, backup_id, source_backup, expire_time]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.CopyBackupRequest):
-            request = backup.CopyBackupRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if backup_id is not None:
-            request.backup_id = backup_id
-        if source_backup is not None:
-            request.source_backup = source_backup
-        if expire_time is not None:
-            request.expire_time = expire_time
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.copy_backup
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            backup.Backup,
-            metadata_type=backup.CopyBackupMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_backup(
-        self,
-        request: Optional[Union[backup.GetBackupRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> backup.Backup:
-        r"""Gets metadata on a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_get_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetBackupRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = await client.get_backup(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.GetBackupRequest, dict]]):
-                The request object. The request for
-                [GetBackup][google.spanner.admin.database.v1.DatabaseAdmin.GetBackup].
-            name (:class:`str`):
-                Required. Name of the backup. Values are of the form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.Backup:
-                A backup of a Cloud Spanner database.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.GetBackupRequest):
-            request = backup.GetBackupRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_backup
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def update_backup(
-        self,
-        request: Optional[Union[gsad_backup.UpdateBackupRequest, dict]] = None,
-        *,
-        backup: Optional[gsad_backup.Backup] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> gsad_backup.Backup:
-        r"""Updates a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_update_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.UpdateBackupRequest(
-                )
-
-                # Make the request
-                response = await client.update_backup(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.UpdateBackupRequest, dict]]):
-                The request object. The request for
-                [UpdateBackup][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackup].
-            backup (:class:`google.cloud.spanner_admin_database_v1.types.Backup`):
-                Required. The backup to update. ``backup.name``, and the
-                fields to be updated as specified by ``update_mask`` are
-                required. Other fields are ignored. Update is only
-                supported for the following fields:
-
-                - ``backup.expire_time``.
-
-                This corresponds to the ``backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (:class:`google.protobuf.field_mask_pb2.FieldMask`):
-                Required. A mask specifying which fields (e.g.
-                ``expire_time``) in the Backup resource should be
-                updated. This mask is relative to the Backup resource,
-                not to the request message. The field mask must always
-                be specified; this prevents any future fields from being
-                erased accidentally by clients that do not know about
-                them.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.Backup:
-                A backup of a Cloud Spanner database.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [backup, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup.UpdateBackupRequest):
-            request = gsad_backup.UpdateBackupRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if backup is not None:
-            request.backup = backup
-        if update_mask is not None:
-            request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.update_backup
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("backup.name", request.backup.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_backup(
-        self,
-        request: Optional[Union[backup.DeleteBackupRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_delete_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.DeleteBackupRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                await client.delete_backup(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.DeleteBackupRequest, dict]]):
-                The request object. The request for
-                [DeleteBackup][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackup].
-            name (:class:`str`):
-                Required. Name of the backup to delete. Values are of
-                the form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.DeleteBackupRequest):
-            request = backup.DeleteBackupRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.delete_backup
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def list_backups(
-        self,
-        request: Optional[Union[backup.ListBackupsRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListBackupsAsyncPager:
-        r"""Lists completed and pending backups. Backups returned are
-        ordered by ``create_time`` in descending order, starting from
-        the most recent ``create_time``.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_list_backups():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListBackupsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_backups(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.ListBackupsRequest, dict]]):
-                The request object. The request for
-                [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-            parent (:class:`str`):
-                Required. The instance to list backups from. Values are
-                of the form ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListBackupsAsyncPager:
-                The response for
-                   [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.ListBackupsRequest):
-            request = backup.ListBackupsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_backups
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListBackupsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def restore_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.RestoreDatabaseRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        database_id: Optional[str] = None,
-        backup: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Create a new database by restoring from a completed backup. The
-        new database must be in the same project and in an instance with
-        the same instance configuration as the instance containing the
-        backup. The returned database [long-running
-        operation][google.longrunning.Operation] has a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``,
-        and can be used to track the progress of the operation, and to
-        cancel it. The [metadata][google.longrunning.Operation.metadata]
-        field type is
-        [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] type is
-        [Database][google.spanner.admin.database.v1.Database], if
-        successful. Cancelling the returned operation will stop the
-        restore and delete the database. There can be only one database
-        being restored into an instance at a time. Once the restore
-        operation completes, a new restore operation can be initiated,
-        without waiting for the optimize operation associated with the
-        first restore to complete.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_restore_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.RestoreDatabaseRequest(
-                    backup="backup_value",
-                    parent="parent_value",
-                    database_id="database_id_value",
-                )
-
-                # Make the request
-                operation = client.restore_database(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.RestoreDatabaseRequest, dict]]):
-                The request object. The request for
-                [RestoreDatabase][google.spanner.admin.database.v1.DatabaseAdmin.RestoreDatabase].
-            parent (:class:`str`):
-                Required. The name of the instance in which to create
-                the restored database. This instance must be in the same
-                project and have the same instance configuration as the
-                instance containing the source backup. Values are of the
-                form ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            database_id (:class:`str`):
-                Required. The id of the database to create and restore
-                to. This database must not already exist. The
-                ``database_id`` appended to ``parent`` forms the full
-                database name of the form
-                ``projects/<project>/instances/<instance>/databases/<database_id>``.
-
-                This corresponds to the ``database_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup (:class:`str`):
-                Name of the backup from which to restore. Values are of
-                the form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Database`
-                A Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, database_id, backup]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.RestoreDatabaseRequest):
-            request = spanner_database_admin.RestoreDatabaseRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if database_id is not None:
-            request.database_id = database_id
-        if backup is not None:
-            request.backup = backup
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.restore_database
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_database_admin.Database,
-            metadata_type=spanner_database_admin.RestoreDatabaseMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_database_operations(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.ListDatabaseOperationsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListDatabaseOperationsAsyncPager:
-        r"""Lists database
-        [longrunning-operations][google.longrunning.Operation]. A
-        database operation has a name of the form
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_list_database_operations():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListDatabaseOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_database_operations(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsRequest, dict]]):
-                The request object. The request for
-                [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-            parent (:class:`str`):
-                Required. The instance of the database operations.
-                Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListDatabaseOperationsAsyncPager:
-                The response for
-                   [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_database_admin.ListDatabaseOperationsRequest
-        ):
-            request = spanner_database_admin.ListDatabaseOperationsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_database_operations
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListDatabaseOperationsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_backup_operations(
-        self,
-        request: Optional[Union[backup.ListBackupOperationsRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListBackupOperationsAsyncPager:
-        r"""Lists the backup [long-running
-        operations][google.longrunning.Operation] in the given instance.
-        A backup operation has a name of the form
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.progress.start_time`` in descending
-        order starting from the most recently started operation.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_list_backup_operations():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListBackupOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_backup_operations(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.ListBackupOperationsRequest, dict]]):
-                The request object. The request for
-                [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-            parent (:class:`str`):
-                Required. The instance of the backup operations. Values
-                are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListBackupOperationsAsyncPager:
-                The response for
-                   [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.ListBackupOperationsRequest):
-            request = backup.ListBackupOperationsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_backup_operations
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListBackupOperationsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_database_roles(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.ListDatabaseRolesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListDatabaseRolesAsyncPager:
-        r"""Lists Cloud Spanner database roles.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_list_database_roles():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListDatabaseRolesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_database_roles(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesRequest, dict]]):
-                The request object. The request for
-                [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-            parent (:class:`str`):
-                Required. The database whose roles should be listed.
-                Values are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListDatabaseRolesAsyncPager:
-                The response for
-                   [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.ListDatabaseRolesRequest):
-            request = spanner_database_admin.ListDatabaseRolesRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_database_roles
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListDatabaseRolesAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def add_split_points(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.AddSplitPointsRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        split_points: Optional[
-            MutableSequence[spanner_database_admin.SplitPoints]
-        ] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.AddSplitPointsResponse:
-        r"""Adds split points to specified tables, indexes of a
-        database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_add_split_points():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.AddSplitPointsRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                response = await client.add_split_points(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.AddSplitPointsRequest, dict]]):
-                The request object. The request for
-                [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-            database (:class:`str`):
-                Required. The database on whose tables/indexes split
-                points are to be added. Values are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            split_points (:class:`MutableSequence[google.cloud.spanner_admin_database_v1.types.SplitPoints]`):
-                Required. The split points to add.
-                This corresponds to the ``split_points`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.AddSplitPointsResponse:
-                The response for
-                   [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, split_points]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.AddSplitPointsRequest):
-            request = spanner_database_admin.AddSplitPointsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-        if split_points:
-            request.split_points.extend(split_points)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.add_split_points
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def create_backup_schedule(
-        self,
-        request: Optional[
-            Union[gsad_backup_schedule.CreateBackupScheduleRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        backup_schedule: Optional[gsad_backup_schedule.BackupSchedule] = None,
-        backup_schedule_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> gsad_backup_schedule.BackupSchedule:
-        r"""Creates a new backup schedule.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_create_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CreateBackupScheduleRequest(
-                    parent="parent_value",
-                    backup_schedule_id="backup_schedule_id_value",
-                )
-
-                # Make the request
-                response = await client.create_backup_schedule(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.CreateBackupScheduleRequest, dict]]):
-                The request object. The request for
-                [CreateBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackupSchedule].
-            parent (:class:`str`):
-                Required. The name of the database
-                that this backup schedule applies to.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_schedule (:class:`google.cloud.spanner_admin_database_v1.types.BackupSchedule`):
-                Required. The backup schedule to
-                create.
-
-                This corresponds to the ``backup_schedule`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_schedule_id (:class:`str`):
-                Required. The Id to use for the backup schedule. The
-                ``backup_schedule_id`` appended to ``parent`` forms the
-                full backup schedule name of the form
-                ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-
-                This corresponds to the ``backup_schedule_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.BackupSchedule:
-                BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, backup_schedule, backup_schedule_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup_schedule.CreateBackupScheduleRequest):
-            request = gsad_backup_schedule.CreateBackupScheduleRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if backup_schedule is not None:
-            request.backup_schedule = backup_schedule
-        if backup_schedule_id is not None:
-            request.backup_schedule_id = backup_schedule_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.create_backup_schedule
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_backup_schedule(
-        self,
-        request: Optional[Union[backup_schedule.GetBackupScheduleRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> backup_schedule.BackupSchedule:
-        r"""Gets backup schedule for the input schedule name.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_get_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetBackupScheduleRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = await client.get_backup_schedule(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.GetBackupScheduleRequest, dict]]):
-                The request object. The request for
-                [GetBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.GetBackupSchedule].
-            name (:class:`str`):
-                Required. The name of the schedule to retrieve. Values
-                are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.BackupSchedule:
-                BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup_schedule.GetBackupScheduleRequest):
-            request = backup_schedule.GetBackupScheduleRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_backup_schedule
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def update_backup_schedule(
-        self,
-        request: Optional[
-            Union[gsad_backup_schedule.UpdateBackupScheduleRequest, dict]
-        ] = None,
-        *,
-        backup_schedule: Optional[gsad_backup_schedule.BackupSchedule] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> gsad_backup_schedule.BackupSchedule:
-        r"""Updates a backup schedule.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_update_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.UpdateBackupScheduleRequest(
-                )
-
-                # Make the request
-                response = await client.update_backup_schedule(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.UpdateBackupScheduleRequest, dict]]):
-                The request object. The request for
-                [UpdateBackupScheduleRequest][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackupSchedule].
-            backup_schedule (:class:`google.cloud.spanner_admin_database_v1.types.BackupSchedule`):
-                Required. The backup schedule to update.
-                ``backup_schedule.name``, and the fields to be updated
-                as specified by ``update_mask`` are required. Other
-                fields are ignored.
-
-                This corresponds to the ``backup_schedule`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (:class:`google.protobuf.field_mask_pb2.FieldMask`):
-                Required. A mask specifying which
-                fields in the BackupSchedule resource
-                should be updated. This mask is relative
-                to the BackupSchedule resource, not to
-                the request message. The field mask must
-                always be specified; this prevents any
-                future fields from being erased
-                accidentally.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.BackupSchedule:
-                BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [backup_schedule, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup_schedule.UpdateBackupScheduleRequest):
-            request = gsad_backup_schedule.UpdateBackupScheduleRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if backup_schedule is not None:
-            request.backup_schedule = backup_schedule
-        if update_mask is not None:
-            request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.update_backup_schedule
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("backup_schedule.name", request.backup_schedule.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_backup_schedule(
-        self,
-        request: Optional[
-            Union[backup_schedule.DeleteBackupScheduleRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a backup schedule.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_delete_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.DeleteBackupScheduleRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                await client.delete_backup_schedule(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.DeleteBackupScheduleRequest, dict]]):
-                The request object. The request for
-                [DeleteBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackupSchedule].
-            name (:class:`str`):
-                Required. The name of the schedule to delete. Values are
-                of the form
-                ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup_schedule.DeleteBackupScheduleRequest):
-            request = backup_schedule.DeleteBackupScheduleRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.delete_backup_schedule
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def list_backup_schedules(
-        self,
-        request: Optional[
-            Union[backup_schedule.ListBackupSchedulesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListBackupSchedulesAsyncPager:
-        r"""Lists all the backup schedules for the database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_list_backup_schedules():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListBackupSchedulesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_backup_schedules(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesRequest, dict]]):
-                The request object. The request for
-                [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-            parent (:class:`str`):
-                Required. Database is the parent
-                resource whose backup schedules should
-                be listed. Values are of the form
-                projects/<project>/instances/<instance>/databases/<database>
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListBackupSchedulesAsyncPager:
-                The response for
-                   [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup_schedule.ListBackupSchedulesRequest):
-            request = backup_schedule.ListBackupSchedulesRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_backup_schedules
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListBackupSchedulesAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def internal_update_graph_operation(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.InternalUpdateGraphOperationRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        operation_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.InternalUpdateGraphOperationResponse:
-        r"""This is an internal API called by Spanner Graph jobs.
-        You should never need to call this API directly.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            async def sample_internal_update_graph_operation():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.InternalUpdateGraphOperationRequest(
-                    database="database_value",
-                    operation_id="operation_id_value",
-                    vm_identity_token="vm_identity_token_value",
-                )
-
-                # Make the request
-                response = await client.internal_update_graph_operation(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_database_v1.types.InternalUpdateGraphOperationRequest, dict]]):
-                The request object. Internal request proto, do not use
-                directly.
-            database (:class:`str`):
-                Internal field, do not use directly.
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            operation_id (:class:`str`):
-                Internal field, do not use directly.
-                This corresponds to the ``operation_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.InternalUpdateGraphOperationResponse:
-                Internal response proto, do not use
-                directly.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, operation_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_database_admin.InternalUpdateGraphOperationRequest
-        ):
-            request = spanner_database_admin.InternalUpdateGraphOperationRequest(
-                request
-            )
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-        if operation_id is not None:
-            request.operation_id = operation_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.internal_update_graph_operation
-        ]
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_operations(
-        self,
-        request: Optional[operations_pb2.ListOperationsRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.ListOperationsResponse:
-        r"""Lists operations that match the specified filter in the request.
-
-        Args:
-            request (:class:`~.operations_pb2.ListOperationsRequest`):
-                The request object. Request message for
-                `ListOperations` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.ListOperationsResponse:
-                Response message for ``ListOperations`` method.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.ListOperationsRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.list_operations]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_operation(
-        self,
-        request: Optional[operations_pb2.GetOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.Operation:
-        r"""Gets the latest state of a long-running operation.
-
-        Args:
-            request (:class:`~.operations_pb2.GetOperationRequest`):
-                The request object. Request message for
-                `GetOperation` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.Operation:
-                An ``Operation`` object.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.GetOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.get_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_operation(
-        self,
-        request: Optional[operations_pb2.DeleteOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a long-running operation.
-
-        This method indicates that the client is no longer interested
-        in the operation result. It does not cancel the operation.
-        If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.DeleteOperationRequest`):
-                The request object. Request message for
-                `DeleteOperation` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.DeleteOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.delete_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def cancel_operation(
-        self,
-        request: Optional[operations_pb2.CancelOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Starts asynchronous cancellation on a long-running operation.
-
-        The server makes a best effort to cancel the operation, but success
-        is not guaranteed.  If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.CancelOperationRequest`):
-                The request object. Request message for
-                `CancelOperation` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.CancelOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.cancel_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def __aenter__(self) -> "DatabaseAdminAsyncClient":
-        return self
-
-    async def __aexit__(self, exc_type, exc, tb):
-        await self.transport.close()
-
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-__all__ = ("DatabaseAdminAsyncClient",)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/client.py b/google/cloud/spanner_admin_database_v1/services/database_admin/client.py
deleted file mode 100644
index 9238484626..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/client.py
+++ /dev/null
@@ -1,4740 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-from http import HTTPStatus
-import json
-import logging as std_logging
-import os
-import re
-from typing import (
-    Callable,
-    Dict,
-    Mapping,
-    MutableMapping,
-    MutableSequence,
-    Optional,
-    Sequence,
-    Tuple,
-    Type,
-    Union,
-    cast,
-)
-import uuid
-import warnings
-
-from google.api_core import client_options as client_options_lib
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1
-from google.api_core import retry as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.exceptions import MutualTLSChannelError  # type: ignore
-from google.auth.transport import mtls  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-
-from google.cloud.spanner_admin_database_v1 import gapic_version as package_version
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-from google.api_core import operation  # type: ignore
-from google.api_core import operation_async  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import duration_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.services.database_admin import pagers
-from google.cloud.spanner_admin_database_v1.types import common, spanner_database_admin
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-
-from .transports.base import DEFAULT_CLIENT_INFO, DatabaseAdminTransport
-from .transports.grpc import DatabaseAdminGrpcTransport
-from .transports.grpc_asyncio import DatabaseAdminGrpcAsyncIOTransport
-from .transports.rest import DatabaseAdminRestTransport
-
-
-class DatabaseAdminClientMeta(type):
-    """Metaclass for the DatabaseAdmin client.
-
-    This provides class-level methods for building and retrieving
-    support objects (e.g. transport) without polluting the client instance
-    objects.
-    """
-
-    _transport_registry = OrderedDict()  # type: Dict[str, Type[DatabaseAdminTransport]]
-    _transport_registry["grpc"] = DatabaseAdminGrpcTransport
-    _transport_registry["grpc_asyncio"] = DatabaseAdminGrpcAsyncIOTransport
-    _transport_registry["rest"] = DatabaseAdminRestTransport
-
-    def get_transport_class(
-        cls,
-        label: Optional[str] = None,
-    ) -> Type[DatabaseAdminTransport]:
-        """Returns an appropriate transport class.
-
-        Args:
-            label: The name of the desired transport. If none is
-                provided, then the first transport in the registry is used.
-
-        Returns:
-            The transport class to use.
-        """
-        # If a specific transport is requested, return that one.
-        if label:
-            return cls._transport_registry[label]
-
-        # No transport is requested; return the default (that is, the first one
-        # in the dictionary).
-        return next(iter(cls._transport_registry.values()))
-
-
-class DatabaseAdminClient(metaclass=DatabaseAdminClientMeta):
-    """Cloud Spanner Database Admin API
-
-    The Cloud Spanner Database Admin API can be used to:
-
-    - create, drop, and list databases
-    - update the schema of pre-existing databases
-    - create, delete, copy and list backups for a database
-    - restore a database from an existing backup
-    """
-
-    @staticmethod
-    def _get_default_mtls_endpoint(api_endpoint):
-        """Converts api endpoint to mTLS endpoint.
-
-        Convert "*.sandbox.googleapis.com" and "*.googleapis.com" to
-        "*.mtls.sandbox.googleapis.com" and "*.mtls.googleapis.com" respectively.
-        Args:
-            api_endpoint (Optional[str]): the api endpoint to convert.
-        Returns:
-            str: converted mTLS api endpoint.
-        """
-        if not api_endpoint:
-            return api_endpoint
-
-        mtls_endpoint_re = re.compile(
-            r"(?P<name>[^.]+)(?P<mtls>\.mtls)?(?P<sandbox>\.sandbox)?(?P<googledomain>\.googleapis\.com)?"
-        )
-
-        m = mtls_endpoint_re.match(api_endpoint)
-        name, mtls, sandbox, googledomain = m.groups()
-        if mtls or not googledomain:
-            return api_endpoint
-
-        if sandbox:
-            return api_endpoint.replace(
-                "sandbox.googleapis.com", "mtls.sandbox.googleapis.com"
-            )
-
-        return api_endpoint.replace(".googleapis.com", ".mtls.googleapis.com")
-
-    # Note: DEFAULT_ENDPOINT is deprecated. Use _DEFAULT_ENDPOINT_TEMPLATE instead.
-    DEFAULT_ENDPOINT = "spanner.googleapis.com"
-    DEFAULT_MTLS_ENDPOINT = _get_default_mtls_endpoint.__func__(  # type: ignore
-        DEFAULT_ENDPOINT
-    )
-
-    _DEFAULT_ENDPOINT_TEMPLATE = "spanner.{UNIVERSE_DOMAIN}"
-    _DEFAULT_UNIVERSE = "googleapis.com"
-
-    @staticmethod
-    def _use_client_cert_effective():
-        """Returns whether client certificate should be used for mTLS if the
-        google-auth version supports should_use_client_cert automatic mTLS enablement.
-
-        Alternatively, read from the GOOGLE_API_USE_CLIENT_CERTIFICATE env var.
-
-        Returns:
-            bool: whether client certificate should be used for mTLS
-        Raises:
-            ValueError: (If using a version of google-auth without should_use_client_cert and
-            GOOGLE_API_USE_CLIENT_CERTIFICATE is set to an unexpected value.)
-        """
-        # check if google-auth version supports should_use_client_cert for automatic mTLS enablement
-        if hasattr(mtls, "should_use_client_cert"):  # pragma: NO COVER
-            return mtls.should_use_client_cert()
-        else:  # pragma: NO COVER
-            # if unsupported, fallback to reading from env var
-            use_client_cert_str = os.getenv(
-                "GOOGLE_API_USE_CLIENT_CERTIFICATE", "false"
-            ).lower()
-            if use_client_cert_str not in ("true", "false"):
-                raise ValueError(
-                    "Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be"
-                    " either `true` or `false`"
-                )
-            return use_client_cert_str == "true"
-
-    @classmethod
-    def from_service_account_info(cls, info: dict, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            info.
-
-        Args:
-            info (dict): The service account private key info.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            DatabaseAdminClient: The constructed client.
-        """
-        credentials = service_account.Credentials.from_service_account_info(info)
-        kwargs["credentials"] = credentials
-        return cls(*args, **kwargs)
-
-    @classmethod
-    def from_service_account_file(cls, filename: str, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            file.
-
-        Args:
-            filename (str): The path to the service account private key json
-                file.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            DatabaseAdminClient: The constructed client.
-        """
-        credentials = service_account.Credentials.from_service_account_file(filename)
-        kwargs["credentials"] = credentials
-        return cls(*args, **kwargs)
-
-    from_service_account_json = from_service_account_file
-
-    @property
-    def transport(self) -> DatabaseAdminTransport:
-        """Returns the transport used by the client instance.
-
-        Returns:
-            DatabaseAdminTransport: The transport used by the client
-                instance.
-        """
-        return self._transport
-
-    @staticmethod
-    def backup_path(
-        project: str,
-        instance: str,
-        backup: str,
-    ) -> str:
-        """Returns a fully-qualified backup string."""
-        return "projects/{project}/instances/{instance}/backups/{backup}".format(
-            project=project,
-            instance=instance,
-            backup=backup,
-        )
-
-    @staticmethod
-    def parse_backup_path(path: str) -> Dict[str, str]:
-        """Parses a backup path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/backups/(?P<backup>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def backup_schedule_path(
-        project: str,
-        instance: str,
-        database: str,
-        schedule: str,
-    ) -> str:
-        """Returns a fully-qualified backup_schedule string."""
-        return "projects/{project}/instances/{instance}/databases/{database}/backupSchedules/{schedule}".format(
-            project=project,
-            instance=instance,
-            database=database,
-            schedule=schedule,
-        )
-
-    @staticmethod
-    def parse_backup_schedule_path(path: str) -> Dict[str, str]:
-        """Parses a backup_schedule path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/databases/(?P<database>.+?)/backupSchedules/(?P<schedule>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def crypto_key_path(
-        project: str,
-        location: str,
-        key_ring: str,
-        crypto_key: str,
-    ) -> str:
-        """Returns a fully-qualified crypto_key string."""
-        return "projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}".format(
-            project=project,
-            location=location,
-            key_ring=key_ring,
-            crypto_key=crypto_key,
-        )
-
-    @staticmethod
-    def parse_crypto_key_path(path: str) -> Dict[str, str]:
-        """Parses a crypto_key path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)/keyRings/(?P<key_ring>.+?)/cryptoKeys/(?P<crypto_key>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def crypto_key_version_path(
-        project: str,
-        location: str,
-        key_ring: str,
-        crypto_key: str,
-        crypto_key_version: str,
-    ) -> str:
-        """Returns a fully-qualified crypto_key_version string."""
-        return "projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}/cryptoKeyVersions/{crypto_key_version}".format(
-            project=project,
-            location=location,
-            key_ring=key_ring,
-            crypto_key=crypto_key,
-            crypto_key_version=crypto_key_version,
-        )
-
-    @staticmethod
-    def parse_crypto_key_version_path(path: str) -> Dict[str, str]:
-        """Parses a crypto_key_version path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)/keyRings/(?P<key_ring>.+?)/cryptoKeys/(?P<crypto_key>.+?)/cryptoKeyVersions/(?P<crypto_key_version>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def database_path(
-        project: str,
-        instance: str,
-        database: str,
-    ) -> str:
-        """Returns a fully-qualified database string."""
-        return "projects/{project}/instances/{instance}/databases/{database}".format(
-            project=project,
-            instance=instance,
-            database=database,
-        )
-
-    @staticmethod
-    def parse_database_path(path: str) -> Dict[str, str]:
-        """Parses a database path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/databases/(?P<database>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def database_role_path(
-        project: str,
-        instance: str,
-        database: str,
-        role: str,
-    ) -> str:
-        """Returns a fully-qualified database_role string."""
-        return "projects/{project}/instances/{instance}/databases/{database}/databaseRoles/{role}".format(
-            project=project,
-            instance=instance,
-            database=database,
-            role=role,
-        )
-
-    @staticmethod
-    def parse_database_role_path(path: str) -> Dict[str, str]:
-        """Parses a database_role path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/databases/(?P<database>.+?)/databaseRoles/(?P<role>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def instance_path(
-        project: str,
-        instance: str,
-    ) -> str:
-        """Returns a fully-qualified instance string."""
-        return "projects/{project}/instances/{instance}".format(
-            project=project,
-            instance=instance,
-        )
-
-    @staticmethod
-    def parse_instance_path(path: str) -> Dict[str, str]:
-        """Parses a instance path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def instance_partition_path(
-        project: str,
-        instance: str,
-        instance_partition: str,
-    ) -> str:
-        """Returns a fully-qualified instance_partition string."""
-        return "projects/{project}/instances/{instance}/instancePartitions/{instance_partition}".format(
-            project=project,
-            instance=instance,
-            instance_partition=instance_partition,
-        )
-
-    @staticmethod
-    def parse_instance_partition_path(path: str) -> Dict[str, str]:
-        """Parses a instance_partition path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/instancePartitions/(?P<instance_partition>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_billing_account_path(
-        billing_account: str,
-    ) -> str:
-        """Returns a fully-qualified billing_account string."""
-        return "billingAccounts/{billing_account}".format(
-            billing_account=billing_account,
-        )
-
-    @staticmethod
-    def parse_common_billing_account_path(path: str) -> Dict[str, str]:
-        """Parse a billing_account path into its component segments."""
-        m = re.match(r"^billingAccounts/(?P<billing_account>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_folder_path(
-        folder: str,
-    ) -> str:
-        """Returns a fully-qualified folder string."""
-        return "folders/{folder}".format(
-            folder=folder,
-        )
-
-    @staticmethod
-    def parse_common_folder_path(path: str) -> Dict[str, str]:
-        """Parse a folder path into its component segments."""
-        m = re.match(r"^folders/(?P<folder>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_organization_path(
-        organization: str,
-    ) -> str:
-        """Returns a fully-qualified organization string."""
-        return "organizations/{organization}".format(
-            organization=organization,
-        )
-
-    @staticmethod
-    def parse_common_organization_path(path: str) -> Dict[str, str]:
-        """Parse a organization path into its component segments."""
-        m = re.match(r"^organizations/(?P<organization>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_project_path(
-        project: str,
-    ) -> str:
-        """Returns a fully-qualified project string."""
-        return "projects/{project}".format(
-            project=project,
-        )
-
-    @staticmethod
-    def parse_common_project_path(path: str) -> Dict[str, str]:
-        """Parse a project path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_location_path(
-        project: str,
-        location: str,
-    ) -> str:
-        """Returns a fully-qualified location string."""
-        return "projects/{project}/locations/{location}".format(
-            project=project,
-            location=location,
-        )
-
-    @staticmethod
-    def parse_common_location_path(path: str) -> Dict[str, str]:
-        """Parse a location path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @classmethod
-    def get_mtls_endpoint_and_cert_source(
-        cls, client_options: Optional[client_options_lib.ClientOptions] = None
-    ):
-        """Deprecated. Return the API endpoint and client cert source for mutual TLS.
-
-        The client cert source is determined in the following order:
-        (1) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not "true", the
-        client cert source is None.
-        (2) if `client_options.client_cert_source` is provided, use the provided one; if the
-        default client cert source exists, use the default one; otherwise the client cert
-        source is None.
-
-        The API endpoint is determined in the following order:
-        (1) if `client_options.api_endpoint` if provided, use the provided one.
-        (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variable is "never", use the default API
-        endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
-        use the default API endpoint.
-
-        More details can be found at https://google.aip.dev/auth/4114.
-
-        Args:
-            client_options (google.api_core.client_options.ClientOptions): Custom options for the
-                client. Only the `api_endpoint` and `client_cert_source` properties may be used
-                in this method.
-
-        Returns:
-            Tuple[str, Callable[[], Tuple[bytes, bytes]]]: returns the API endpoint and the
-                client cert source to use.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If any errors happen.
-        """
-
-        warnings.warn(
-            "get_mtls_endpoint_and_cert_source is deprecated. Use the api_endpoint property instead.",
-            DeprecationWarning,
-        )
-        if client_options is None:
-            client_options = client_options_lib.ClientOptions()
-        use_client_cert = DatabaseAdminClient._use_client_cert_effective()
-        use_mtls_endpoint = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto")
-        if use_mtls_endpoint not in ("auto", "never", "always"):
-            raise MutualTLSChannelError(
-                "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-            )
-
-        # Figure out the client cert source to use.
-        client_cert_source = None
-        if use_client_cert:
-            if client_options.client_cert_source:
-                client_cert_source = client_options.client_cert_source
-            elif mtls.has_default_client_cert_source():
-                client_cert_source = mtls.default_client_cert_source()
-
-        # Figure out which api endpoint to use.
-        if client_options.api_endpoint is not None:
-            api_endpoint = client_options.api_endpoint
-        elif use_mtls_endpoint == "always" or (
-            use_mtls_endpoint == "auto" and client_cert_source
-        ):
-            api_endpoint = cls.DEFAULT_MTLS_ENDPOINT
-        else:
-            api_endpoint = cls.DEFAULT_ENDPOINT
-
-        return api_endpoint, client_cert_source
-
-    @staticmethod
-    def _read_environment_variables():
-        """Returns the environment variables used by the client.
-
-        Returns:
-            Tuple[bool, str, str]: returns the GOOGLE_API_USE_CLIENT_CERTIFICATE,
-            GOOGLE_API_USE_MTLS_ENDPOINT, and GOOGLE_CLOUD_UNIVERSE_DOMAIN environment variables.
-
-        Raises:
-            ValueError: If GOOGLE_API_USE_CLIENT_CERTIFICATE is not
-                any of ["true", "false"].
-            google.auth.exceptions.MutualTLSChannelError: If GOOGLE_API_USE_MTLS_ENDPOINT
-                is not any of ["auto", "never", "always"].
-        """
-        use_client_cert = DatabaseAdminClient._use_client_cert_effective()
-        use_mtls_endpoint = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto").lower()
-        universe_domain_env = os.getenv("GOOGLE_CLOUD_UNIVERSE_DOMAIN")
-        if use_mtls_endpoint not in ("auto", "never", "always"):
-            raise MutualTLSChannelError(
-                "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-            )
-        return use_client_cert, use_mtls_endpoint, universe_domain_env
-
-    @staticmethod
-    def _get_client_cert_source(provided_cert_source, use_cert_flag):
-        """Return the client cert source to be used by the client.
-
-        Args:
-            provided_cert_source (bytes): The client certificate source provided.
-            use_cert_flag (bool): A flag indicating whether to use the client certificate.
-
-        Returns:
-            bytes or None: The client cert source to be used by the client.
-        """
-        client_cert_source = None
-        if use_cert_flag:
-            if provided_cert_source:
-                client_cert_source = provided_cert_source
-            elif mtls.has_default_client_cert_source():
-                client_cert_source = mtls.default_client_cert_source()
-        return client_cert_source
-
-    @staticmethod
-    def _get_api_endpoint(
-        api_override, client_cert_source, universe_domain, use_mtls_endpoint
-    ):
-        """Return the API endpoint used by the client.
-
-        Args:
-            api_override (str): The API endpoint override. If specified, this is always
-                the return value of this function and the other arguments are not used.
-            client_cert_source (bytes): The client certificate source used by the client.
-            universe_domain (str): The universe domain used by the client.
-            use_mtls_endpoint (str): How to use the mTLS endpoint, which depends also on the other parameters.
-                Possible values are "always", "auto", or "never".
-
-        Returns:
-            str: The API endpoint to be used by the client.
-        """
-        if api_override is not None:
-            api_endpoint = api_override
-        elif use_mtls_endpoint == "always" or (
-            use_mtls_endpoint == "auto" and client_cert_source
-        ):
-            _default_universe = DatabaseAdminClient._DEFAULT_UNIVERSE
-            if universe_domain != _default_universe:
-                raise MutualTLSChannelError(
-                    f"mTLS is not supported in any universe other than {_default_universe}."
-                )
-            api_endpoint = DatabaseAdminClient.DEFAULT_MTLS_ENDPOINT
-        else:
-            api_endpoint = DatabaseAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=universe_domain
-            )
-        return api_endpoint
-
-    @staticmethod
-    def _get_universe_domain(
-        client_universe_domain: Optional[str], universe_domain_env: Optional[str]
-    ) -> str:
-        """Return the universe domain used by the client.
-
-        Args:
-            client_universe_domain (Optional[str]): The universe domain configured via the client options.
-            universe_domain_env (Optional[str]): The universe domain configured via the "GOOGLE_CLOUD_UNIVERSE_DOMAIN" environment variable.
-
-        Returns:
-            str: The universe domain to be used by the client.
-
-        Raises:
-            ValueError: If the universe domain is an empty string.
-        """
-        universe_domain = DatabaseAdminClient._DEFAULT_UNIVERSE
-        if client_universe_domain is not None:
-            universe_domain = client_universe_domain
-        elif universe_domain_env is not None:
-            universe_domain = universe_domain_env
-        if len(universe_domain.strip()) == 0:
-            raise ValueError("Universe Domain cannot be an empty string.")
-        return universe_domain
-
-    def _validate_universe_domain(self):
-        """Validates client's and credentials' universe domains are consistent.
-
-        Returns:
-            bool: True iff the configured universe domain is valid.
-
-        Raises:
-            ValueError: If the configured universe domain is not valid.
-        """
-
-        # NOTE (b/349488459): universe validation is disabled until further notice.
-        return True
-
-    def _add_cred_info_for_auth_errors(
-        self, error: core_exceptions.GoogleAPICallError
-    ) -> None:
-        """Adds credential info string to error details for 401/403/404 errors.
-
-        Args:
-            error (google.api_core.exceptions.GoogleAPICallError): The error to add the cred info.
-        """
-        if error.code not in [
-            HTTPStatus.UNAUTHORIZED,
-            HTTPStatus.FORBIDDEN,
-            HTTPStatus.NOT_FOUND,
-        ]:
-            return
-
-        cred = self._transport._credentials
-
-        # get_cred_info is only available in google-auth>=2.35.0
-        if not hasattr(cred, "get_cred_info"):
-            return
-
-        # ignore the type check since pypy test fails when get_cred_info
-        # is not available
-        cred_info = cred.get_cred_info()  # type: ignore
-        if cred_info and hasattr(error._details, "append"):
-            error._details.append(json.dumps(cred_info))
-
-    @property
-    def api_endpoint(self):
-        """Return the API endpoint used by the client instance.
-
-        Returns:
-            str: The API endpoint used by the client instance.
-        """
-        return self._api_endpoint
-
-    @property
-    def universe_domain(self) -> str:
-        """Return the universe domain used by the client instance.
-
-        Returns:
-            str: The universe domain used by the client instance.
-        """
-        return self._universe_domain
-
-    def __init__(
-        self,
-        *,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        transport: Optional[
-            Union[str, DatabaseAdminTransport, Callable[..., DatabaseAdminTransport]]
-        ] = None,
-        client_options: Optional[Union[client_options_lib.ClientOptions, dict]] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-    ) -> None:
-        """Instantiates the database admin client.
-
-        Args:
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            transport (Optional[Union[str,DatabaseAdminTransport,Callable[..., DatabaseAdminTransport]]]):
-                The transport to use, or a Callable that constructs and returns a new transport.
-                If a Callable is given, it will be called with the same set of initialization
-                arguments as used in the DatabaseAdminTransport constructor.
-                If set to None, a transport is chosen automatically.
-            client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]):
-                Custom options for the client.
-
-                1. The ``api_endpoint`` property can be used to override the
-                default endpoint provided by the client when ``transport`` is
-                not explicitly provided. Only if this property is not set and
-                ``transport`` was not explicitly provided, the endpoint is
-                determined by the GOOGLE_API_USE_MTLS_ENDPOINT environment
-                variable, which have one of the following values:
-                "always" (always use the default mTLS endpoint), "never" (always
-                use the default regular endpoint) and "auto" (auto-switch to the
-                default mTLS endpoint if client certificate is present; this is
-                the default value).
-
-                2. If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
-                is "true", then the ``client_cert_source`` property can be used
-                to provide a client certificate for mTLS transport. If
-                not provided, the default SSL client certificate will be used if
-                present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
-                set, no client certificate will be used.
-
-                3. The ``universe_domain`` property can be used to override the
-                default "googleapis.com" universe. Note that the ``api_endpoint``
-                property still takes precedence; and ``universe_domain`` is
-                currently not supported for mTLS.
-
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
-                creation failed for any reason.
-        """
-        self._client_options = client_options
-        if isinstance(self._client_options, dict):
-            self._client_options = client_options_lib.from_dict(self._client_options)
-        if self._client_options is None:
-            self._client_options = client_options_lib.ClientOptions()
-        self._client_options = cast(
-            client_options_lib.ClientOptions, self._client_options
-        )
-
-        universe_domain_opt = getattr(self._client_options, "universe_domain", None)
-
-        (
-            self._use_client_cert,
-            self._use_mtls_endpoint,
-            self._universe_domain_env,
-        ) = DatabaseAdminClient._read_environment_variables()
-        self._client_cert_source = DatabaseAdminClient._get_client_cert_source(
-            self._client_options.client_cert_source, self._use_client_cert
-        )
-        self._universe_domain = DatabaseAdminClient._get_universe_domain(
-            universe_domain_opt, self._universe_domain_env
-        )
-        self._api_endpoint = None  # updated below, depending on `transport`
-
-        # Initialize the universe domain validation.
-        self._is_universe_domain_valid = False
-
-        if CLIENT_LOGGING_SUPPORTED:  # pragma: NO COVER
-            # Setup logging.
-            client_logging.initialize_logging()
-
-        api_key_value = getattr(self._client_options, "api_key", None)
-        if api_key_value and credentials:
-            raise ValueError(
-                "client_options.api_key and credentials are mutually exclusive"
-            )
-
-        # Save or instantiate the transport.
-        # Ordinarily, we provide the transport, but allowing a custom transport
-        # instance provides an extensibility point for unusual situations.
-        transport_provided = isinstance(transport, DatabaseAdminTransport)
-        if transport_provided:
-            # transport is a DatabaseAdminTransport instance.
-            if credentials or self._client_options.credentials_file or api_key_value:
-                raise ValueError(
-                    "When providing a transport instance, "
-                    "provide its credentials directly."
-                )
-            if self._client_options.scopes:
-                raise ValueError(
-                    "When providing a transport instance, provide its scopes "
-                    "directly."
-                )
-            self._transport = cast(DatabaseAdminTransport, transport)
-            self._api_endpoint = self._transport.host
-
-        self._api_endpoint = (
-            self._api_endpoint
-            or DatabaseAdminClient._get_api_endpoint(
-                self._client_options.api_endpoint,
-                self._client_cert_source,
-                self._universe_domain,
-                self._use_mtls_endpoint,
-            )
-        )
-
-        if not transport_provided:
-            import google.auth._default  # type: ignore
-
-            if api_key_value and hasattr(
-                google.auth._default, "get_api_key_credentials"
-            ):
-                credentials = google.auth._default.get_api_key_credentials(
-                    api_key_value
-                )
-
-            transport_init: Union[
-                Type[DatabaseAdminTransport], Callable[..., DatabaseAdminTransport]
-            ] = (
-                DatabaseAdminClient.get_transport_class(transport)
-                if isinstance(transport, str) or transport is None
-                else cast(Callable[..., DatabaseAdminTransport], transport)
-            )
-            # initialize with the provided callable or the passed in class
-            self._transport = transport_init(
-                credentials=credentials,
-                credentials_file=self._client_options.credentials_file,
-                host=self._api_endpoint,
-                scopes=self._client_options.scopes,
-                client_cert_source_for_mtls=self._client_cert_source,
-                quota_project_id=self._client_options.quota_project_id,
-                client_info=client_info,
-                always_use_jwt_access=True,
-                api_audience=self._client_options.api_audience,
-            )
-
-        if "async" not in str(self._transport):
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                std_logging.DEBUG
-            ):  # pragma: NO COVER
-                _LOGGER.debug(
-                    "Created client `google.spanner.admin.database_v1.DatabaseAdminClient`.",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "universeDomain": getattr(
-                            self._transport._credentials, "universe_domain", ""
-                        ),
-                        "credentialsType": f"{type(self._transport._credentials).__module__}.{type(self._transport._credentials).__qualname__}",
-                        "credentialsInfo": getattr(
-                            self.transport._credentials, "get_cred_info", lambda: None
-                        )(),
-                    }
-                    if hasattr(self._transport, "_credentials")
-                    else {
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "credentialsType": None,
-                    },
-                )
-
-    def list_databases(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.ListDatabasesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListDatabasesPager:
-        r"""Lists Cloud Spanner databases.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_list_databases():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListDatabasesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_databases(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.ListDatabasesRequest, dict]):
-                The request object. The request for
-                [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-            parent (str):
-                Required. The instance whose databases should be listed.
-                Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListDatabasesPager:
-                The response for
-                   [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.ListDatabasesRequest):
-            request = spanner_database_admin.ListDatabasesRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_databases]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListDatabasesPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def create_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.CreateDatabaseRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        create_statement: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Creates a new Cloud Spanner database and starts to prepare it
-        for serving. The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format ``<database_name>/operations/<operation_id>`` and can be
-        used to track preparation of the database. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateDatabaseMetadata][google.spanner.admin.database.v1.CreateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_create_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CreateDatabaseRequest(
-                    parent="parent_value",
-                    create_statement="create_statement_value",
-                )
-
-                # Make the request
-                operation = client.create_database(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.CreateDatabaseRequest, dict]):
-                The request object. The request for
-                [CreateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.CreateDatabase].
-            parent (str):
-                Required. The name of the instance that will serve the
-                new database. Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            create_statement (str):
-                Required. A ``CREATE DATABASE`` statement, which
-                specifies the ID of the new database. The database ID
-                must conform to the regular expression
-                ``[a-z][a-z0-9_\-]*[a-z0-9]`` and be between 2 and 30
-                characters in length. If the database ID is a reserved
-                word or if it contains a hyphen, the database ID must be
-                enclosed in backticks (:literal:`\``).
-
-                This corresponds to the ``create_statement`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Database`
-                A Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, create_statement]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.CreateDatabaseRequest):
-            request = spanner_database_admin.CreateDatabaseRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if create_statement is not None:
-                request.create_statement = create_statement
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.create_database]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_database_admin.Database,
-            metadata_type=spanner_database_admin.CreateDatabaseMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.GetDatabaseRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.Database:
-        r"""Gets the state of a Cloud Spanner database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_get_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetDatabaseRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = client.get_database(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.GetDatabaseRequest, dict]):
-                The request object. The request for
-                [GetDatabase][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabase].
-            name (str):
-                Required. The name of the requested database. Values are
-                of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.Database:
-                A Cloud Spanner database.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.GetDatabaseRequest):
-            request = spanner_database_admin.GetDatabaseRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_database]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def update_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.UpdateDatabaseRequest, dict]
-        ] = None,
-        *,
-        database: Optional[spanner_database_admin.Database] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Updates a Cloud Spanner database. The returned [long-running
-        operation][google.longrunning.Operation] can be used to track
-        the progress of updating the database. If the named database
-        does not exist, returns ``NOT_FOUND``.
-
-        While the operation is pending:
-
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field is set to true.
-        - Cancelling the operation is best-effort. If the cancellation
-          succeeds, the operation metadata's
-          [cancel_time][google.spanner.admin.database.v1.UpdateDatabaseMetadata.cancel_time]
-          is set, the updates are reverted, and the operation terminates
-          with a ``CANCELLED`` status.
-        - New UpdateDatabase requests will return a
-          ``FAILED_PRECONDITION`` error until the pending operation is
-          done (returns successfully or with error).
-        - Reading the database via the API continues to give the
-          pre-request values.
-
-        Upon completion of the returned operation:
-
-        - The new values are in effect and readable via the API.
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field becomes false.
-
-        The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``
-        and can be used to track the database modification. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseMetadata][google.spanner.admin.database.v1.UpdateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_update_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                database = spanner_admin_database_v1.Database()
-                database.name = "name_value"
-
-                request = spanner_admin_database_v1.UpdateDatabaseRequest(
-                    database=database,
-                )
-
-                # Make the request
-                operation = client.update_database(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.UpdateDatabaseRequest, dict]):
-                The request object. The request for
-                [UpdateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabase].
-            database (google.cloud.spanner_admin_database_v1.types.Database):
-                Required. The database to update. The ``name`` field of
-                the database is of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (google.protobuf.field_mask_pb2.FieldMask):
-                Required. The list of fields to update. Currently, only
-                ``enable_drop_protection`` field can be updated.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Database`
-                A Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.UpdateDatabaseRequest):
-            request = spanner_database_admin.UpdateDatabaseRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-            if update_mask is not None:
-                request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.update_database]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("database.name", request.database.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_database_admin.Database,
-            metadata_type=spanner_database_admin.UpdateDatabaseMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def update_database_ddl(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.UpdateDatabaseDdlRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        statements: Optional[MutableSequence[str]] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Updates the schema of a Cloud Spanner database by
-        creating/altering/dropping tables, columns, indexes, etc. The
-        returned [long-running operation][google.longrunning.Operation]
-        will have a name of the format
-        ``<database_name>/operations/<operation_id>`` and can be used to
-        track execution of the schema change(s). The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseDdlMetadata][google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata].
-        The operation has no response.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_update_database_ddl():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.UpdateDatabaseDdlRequest(
-                    database="database_value",
-                    statements=['statements_value1', 'statements_value2'],
-                )
-
-                # Make the request
-                operation = client.update_database_ddl(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.UpdateDatabaseDdlRequest, dict]):
-                The request object. Enqueues the given DDL statements to be applied, in
-                order but not necessarily all at once, to the database
-                schema at some point (or points) in the future. The
-                server checks that the statements are executable
-                (syntactically valid, name tables that exist, etc.)
-                before enqueueing them, but they may still fail upon
-                later execution (e.g., if a statement from another batch
-                of statements is applied first and it conflicts in some
-                way, or if there is some data-related problem like a
-                ``NULL`` value in a column to which ``NOT NULL`` would
-                be added). If a statement fails, all subsequent
-                statements in the batch are automatically cancelled.
-
-                Each batch of statements is assigned a name which can be
-                used with the
-                [Operations][google.longrunning.Operations] API to
-                monitor progress. See the
-                [operation_id][google.spanner.admin.database.v1.UpdateDatabaseDdlRequest.operation_id]
-                field for more details.
-            database (str):
-                Required. The database to update.
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            statements (MutableSequence[str]):
-                Required. DDL statements to be
-                applied to the database.
-
-                This corresponds to the ``statements`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.protobuf.empty_pb2.Empty` A generic empty message that you can re-use to avoid defining duplicated
-                   empty messages in your APIs. A typical example is to
-                   use it as the request or the response type of an API
-                   method. For instance:
-
-                      service Foo {
-                         rpc Bar(google.protobuf.Empty) returns
-                         (google.protobuf.Empty);
-
-                      }
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, statements]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.UpdateDatabaseDdlRequest):
-            request = spanner_database_admin.UpdateDatabaseDdlRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-            if statements is not None:
-                request.statements = statements
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.update_database_ddl]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            empty_pb2.Empty,
-            metadata_type=spanner_database_admin.UpdateDatabaseDdlMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def drop_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.DropDatabaseRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Drops (aka deletes) a Cloud Spanner database. Completed backups
-        for the database will be retained according to their
-        ``expire_time``. Note: Cloud Spanner might continue to accept
-        requests for a few seconds after the database has been deleted.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_drop_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.DropDatabaseRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                client.drop_database(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.DropDatabaseRequest, dict]):
-                The request object. The request for
-                [DropDatabase][google.spanner.admin.database.v1.DatabaseAdmin.DropDatabase].
-            database (str):
-                Required. The database to be dropped.
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.DropDatabaseRequest):
-            request = spanner_database_admin.DropDatabaseRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.drop_database]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def get_database_ddl(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.GetDatabaseDdlRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.GetDatabaseDdlResponse:
-        r"""Returns the schema of a Cloud Spanner database as a list of
-        formatted DDL statements. This method does not show pending
-        schema updates, those may be queried using the
-        [Operations][google.longrunning.Operations] API.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_get_database_ddl():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetDatabaseDdlRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                response = client.get_database_ddl(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.GetDatabaseDdlRequest, dict]):
-                The request object. The request for
-                [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-            database (str):
-                Required. The database whose schema we wish to get.
-                Values are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.GetDatabaseDdlResponse:
-                The response for
-                   [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.GetDatabaseDdlRequest):
-            request = spanner_database_admin.GetDatabaseDdlRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_database_ddl]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def set_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.SetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Sets the access control policy on a database or backup resource.
-        Replaces any existing policy.
-
-        Authorization requires ``spanner.databases.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            def sample_set_iam_policy():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.SetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = client.set_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.iam.v1.iam_policy_pb2.SetIamPolicyRequest, dict]):
-                The request object. Request message for ``SetIamPolicy`` method.
-            resource (str):
-                REQUIRED: The resource for which the
-                policy is being specified. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        if isinstance(request, dict):
-            # - The request isn't a proto-plus wrapped type,
-            #   so it must be constructed via keyword expansion.
-            request = iam_policy_pb2.SetIamPolicyRequest(**request)
-        elif not request:
-            # Null request, just make one.
-            request = iam_policy_pb2.SetIamPolicyRequest()
-            if resource is not None:
-                request.resource = resource
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.set_iam_policy]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.GetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Gets the access control policy for a database or backup
-        resource. Returns an empty policy if a database or backup exists
-        but does not have a policy set.
-
-        Authorization requires ``spanner.databases.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            def sample_get_iam_policy():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.GetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = client.get_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.iam.v1.iam_policy_pb2.GetIamPolicyRequest, dict]):
-                The request object. Request message for ``GetIamPolicy`` method.
-            resource (str):
-                REQUIRED: The resource for which the
-                policy is being requested. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        if isinstance(request, dict):
-            # - The request isn't a proto-plus wrapped type,
-            #   so it must be constructed via keyword expansion.
-            request = iam_policy_pb2.GetIamPolicyRequest(**request)
-        elif not request:
-            # Null request, just make one.
-            request = iam_policy_pb2.GetIamPolicyRequest()
-            if resource is not None:
-                request.resource = resource
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_iam_policy]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def test_iam_permissions(
-        self,
-        request: Optional[Union[iam_policy_pb2.TestIamPermissionsRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        permissions: Optional[MutableSequence[str]] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> iam_policy_pb2.TestIamPermissionsResponse:
-        r"""Returns permissions that the caller has on the specified
-        database or backup resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner database
-        will result in a NOT_FOUND error if the user has
-        ``spanner.databases.list`` permission on the containing Cloud
-        Spanner instance. Otherwise returns an empty set of permissions.
-        Calling this method on a backup that does not exist will result
-        in a NOT_FOUND error if the user has ``spanner.backups.list``
-        permission on the containing instance.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            def sample_test_iam_permissions():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.TestIamPermissionsRequest(
-                    resource="resource_value",
-                    permissions=['permissions_value1', 'permissions_value2'],
-                )
-
-                # Make the request
-                response = client.test_iam_permissions(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.iam.v1.iam_policy_pb2.TestIamPermissionsRequest, dict]):
-                The request object. Request message for ``TestIamPermissions`` method.
-            resource (str):
-                REQUIRED: The resource for which the
-                policy detail is being requested. See
-                the operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            permissions (MutableSequence[str]):
-                The set of permissions to check for the ``resource``.
-                Permissions with wildcards (such as '*' or 'storage.*')
-                are not allowed. For more information see `IAM
-                Overview <https://cloud.google.com/iam/docs/overview#permissions>`__.
-
-                This corresponds to the ``permissions`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.iam_policy_pb2.TestIamPermissionsResponse:
-                Response message for TestIamPermissions method.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource, permissions]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        if isinstance(request, dict):
-            # - The request isn't a proto-plus wrapped type,
-            #   so it must be constructed via keyword expansion.
-            request = iam_policy_pb2.TestIamPermissionsRequest(**request)
-        elif not request:
-            # Null request, just make one.
-            request = iam_policy_pb2.TestIamPermissionsRequest()
-            if resource is not None:
-                request.resource = resource
-            if permissions:
-                request.permissions.extend(permissions)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.test_iam_permissions]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def create_backup(
-        self,
-        request: Optional[Union[gsad_backup.CreateBackupRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        backup: Optional[gsad_backup.Backup] = None,
-        backup_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Starts creating a new Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track creation of the backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        creation and delete the backup. There can be only one pending
-        backup creation per database. Backup creation of different
-        databases can run concurrently.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_create_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CreateBackupRequest(
-                    parent="parent_value",
-                    backup_id="backup_id_value",
-                )
-
-                # Make the request
-                operation = client.create_backup(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.CreateBackupRequest, dict]):
-                The request object. The request for
-                [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup].
-            parent (str):
-                Required. The name of the instance in which the backup
-                will be created. This must be the same instance that
-                contains the database the backup will be created from.
-                The backup will be stored in the location(s) specified
-                in the instance configuration of this instance. Values
-                are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup (google.cloud.spanner_admin_database_v1.types.Backup):
-                Required. The backup to create.
-                This corresponds to the ``backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_id (str):
-                Required. The id of the backup to be created. The
-                ``backup_id`` appended to ``parent`` forms the full
-                backup name of the form
-                ``projects/<project>/instances/<instance>/backups/<backup_id>``.
-
-                This corresponds to the ``backup_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Backup`
-                A backup of a Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, backup, backup_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup.CreateBackupRequest):
-            request = gsad_backup.CreateBackupRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if backup is not None:
-                request.backup = backup
-            if backup_id is not None:
-                request.backup_id = backup_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.create_backup]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            gsad_backup.Backup,
-            metadata_type=gsad_backup.CreateBackupMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def copy_backup(
-        self,
-        request: Optional[Union[backup.CopyBackupRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        backup_id: Optional[str] = None,
-        source_backup: Optional[str] = None,
-        expire_time: Optional[timestamp_pb2.Timestamp] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Starts copying a Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track copying of the backup. The operation is
-        associated with the destination backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        copying and delete the destination backup. Concurrent CopyBackup
-        requests can run on the same source backup.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_copy_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CopyBackupRequest(
-                    parent="parent_value",
-                    backup_id="backup_id_value",
-                    source_backup="source_backup_value",
-                )
-
-                # Make the request
-                operation = client.copy_backup(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.CopyBackupRequest, dict]):
-                The request object. The request for
-                [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
-            parent (str):
-                Required. The name of the destination instance that will
-                contain the backup copy. Values are of the form:
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_id (str):
-                Required. The id of the backup copy. The ``backup_id``
-                appended to ``parent`` forms the full backup_uri of the
-                form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``backup_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            source_backup (str):
-                Required. The source backup to be copied. The source
-                backup needs to be in READY state for it to be copied.
-                Once CopyBackup is in progress, the source backup cannot
-                be deleted or cleaned up on expiration until CopyBackup
-                is finished. Values are of the form:
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``source_backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            expire_time (google.protobuf.timestamp_pb2.Timestamp):
-                Required. The expiration time of the backup in
-                microsecond granularity. The expiration time must be at
-                least 6 hours and at most 366 days from the
-                ``create_time`` of the source backup. Once the
-                ``expire_time`` has passed, the backup is eligible to be
-                automatically deleted by Cloud Spanner to free the
-                resources used by the backup.
-
-                This corresponds to the ``expire_time`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Backup`
-                A backup of a Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, backup_id, source_backup, expire_time]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.CopyBackupRequest):
-            request = backup.CopyBackupRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if backup_id is not None:
-                request.backup_id = backup_id
-            if source_backup is not None:
-                request.source_backup = source_backup
-            if expire_time is not None:
-                request.expire_time = expire_time
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.copy_backup]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            backup.Backup,
-            metadata_type=backup.CopyBackupMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_backup(
-        self,
-        request: Optional[Union[backup.GetBackupRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> backup.Backup:
-        r"""Gets metadata on a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_get_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetBackupRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = client.get_backup(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.GetBackupRequest, dict]):
-                The request object. The request for
-                [GetBackup][google.spanner.admin.database.v1.DatabaseAdmin.GetBackup].
-            name (str):
-                Required. Name of the backup. Values are of the form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.Backup:
-                A backup of a Cloud Spanner database.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.GetBackupRequest):
-            request = backup.GetBackupRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_backup]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def update_backup(
-        self,
-        request: Optional[Union[gsad_backup.UpdateBackupRequest, dict]] = None,
-        *,
-        backup: Optional[gsad_backup.Backup] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> gsad_backup.Backup:
-        r"""Updates a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_update_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.UpdateBackupRequest(
-                )
-
-                # Make the request
-                response = client.update_backup(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.UpdateBackupRequest, dict]):
-                The request object. The request for
-                [UpdateBackup][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackup].
-            backup (google.cloud.spanner_admin_database_v1.types.Backup):
-                Required. The backup to update. ``backup.name``, and the
-                fields to be updated as specified by ``update_mask`` are
-                required. Other fields are ignored. Update is only
-                supported for the following fields:
-
-                - ``backup.expire_time``.
-
-                This corresponds to the ``backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (google.protobuf.field_mask_pb2.FieldMask):
-                Required. A mask specifying which fields (e.g.
-                ``expire_time``) in the Backup resource should be
-                updated. This mask is relative to the Backup resource,
-                not to the request message. The field mask must always
-                be specified; this prevents any future fields from being
-                erased accidentally by clients that do not know about
-                them.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.Backup:
-                A backup of a Cloud Spanner database.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [backup, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup.UpdateBackupRequest):
-            request = gsad_backup.UpdateBackupRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if backup is not None:
-                request.backup = backup
-            if update_mask is not None:
-                request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.update_backup]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("backup.name", request.backup.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def delete_backup(
-        self,
-        request: Optional[Union[backup.DeleteBackupRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_delete_backup():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.DeleteBackupRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                client.delete_backup(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.DeleteBackupRequest, dict]):
-                The request object. The request for
-                [DeleteBackup][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackup].
-            name (str):
-                Required. Name of the backup to delete. Values are of
-                the form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.DeleteBackupRequest):
-            request = backup.DeleteBackupRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.delete_backup]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def list_backups(
-        self,
-        request: Optional[Union[backup.ListBackupsRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListBackupsPager:
-        r"""Lists completed and pending backups. Backups returned are
-        ordered by ``create_time`` in descending order, starting from
-        the most recent ``create_time``.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_list_backups():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListBackupsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_backups(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.ListBackupsRequest, dict]):
-                The request object. The request for
-                [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-            parent (str):
-                Required. The instance to list backups from. Values are
-                of the form ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListBackupsPager:
-                The response for
-                   [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.ListBackupsRequest):
-            request = backup.ListBackupsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_backups]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListBackupsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def restore_database(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.RestoreDatabaseRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        database_id: Optional[str] = None,
-        backup: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Create a new database by restoring from a completed backup. The
-        new database must be in the same project and in an instance with
-        the same instance configuration as the instance containing the
-        backup. The returned database [long-running
-        operation][google.longrunning.Operation] has a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``,
-        and can be used to track the progress of the operation, and to
-        cancel it. The [metadata][google.longrunning.Operation.metadata]
-        field type is
-        [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] type is
-        [Database][google.spanner.admin.database.v1.Database], if
-        successful. Cancelling the returned operation will stop the
-        restore and delete the database. There can be only one database
-        being restored into an instance at a time. Once the restore
-        operation completes, a new restore operation can be initiated,
-        without waiting for the optimize operation associated with the
-        first restore to complete.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_restore_database():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.RestoreDatabaseRequest(
-                    backup="backup_value",
-                    parent="parent_value",
-                    database_id="database_id_value",
-                )
-
-                # Make the request
-                operation = client.restore_database(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.RestoreDatabaseRequest, dict]):
-                The request object. The request for
-                [RestoreDatabase][google.spanner.admin.database.v1.DatabaseAdmin.RestoreDatabase].
-            parent (str):
-                Required. The name of the instance in which to create
-                the restored database. This instance must be in the same
-                project and have the same instance configuration as the
-                instance containing the source backup. Values are of the
-                form ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            database_id (str):
-                Required. The id of the database to create and restore
-                to. This database must not already exist. The
-                ``database_id`` appended to ``parent`` forms the full
-                database name of the form
-                ``projects/<project>/instances/<instance>/databases/<database_id>``.
-
-                This corresponds to the ``database_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup (str):
-                Name of the backup from which to restore. Values are of
-                the form
-                ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-                This corresponds to the ``backup`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_database_v1.types.Database`
-                A Cloud Spanner database.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, database_id, backup]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.RestoreDatabaseRequest):
-            request = spanner_database_admin.RestoreDatabaseRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if database_id is not None:
-                request.database_id = database_id
-            if backup is not None:
-                request.backup = backup
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.restore_database]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_database_admin.Database,
-            metadata_type=spanner_database_admin.RestoreDatabaseMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def list_database_operations(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.ListDatabaseOperationsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListDatabaseOperationsPager:
-        r"""Lists database
-        [longrunning-operations][google.longrunning.Operation]. A
-        database operation has a name of the form
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_list_database_operations():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListDatabaseOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_database_operations(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsRequest, dict]):
-                The request object. The request for
-                [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-            parent (str):
-                Required. The instance of the database operations.
-                Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListDatabaseOperationsPager:
-                The response for
-                   [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_database_admin.ListDatabaseOperationsRequest
-        ):
-            request = spanner_database_admin.ListDatabaseOperationsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_database_operations]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListDatabaseOperationsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def list_backup_operations(
-        self,
-        request: Optional[Union[backup.ListBackupOperationsRequest, dict]] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListBackupOperationsPager:
-        r"""Lists the backup [long-running
-        operations][google.longrunning.Operation] in the given instance.
-        A backup operation has a name of the form
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.progress.start_time`` in descending
-        order starting from the most recently started operation.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_list_backup_operations():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListBackupOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_backup_operations(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.ListBackupOperationsRequest, dict]):
-                The request object. The request for
-                [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-            parent (str):
-                Required. The instance of the backup operations. Values
-                are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListBackupOperationsPager:
-                The response for
-                   [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup.ListBackupOperationsRequest):
-            request = backup.ListBackupOperationsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_backup_operations]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListBackupOperationsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def list_database_roles(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.ListDatabaseRolesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListDatabaseRolesPager:
-        r"""Lists Cloud Spanner database roles.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_list_database_roles():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListDatabaseRolesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_database_roles(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesRequest, dict]):
-                The request object. The request for
-                [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-            parent (str):
-                Required. The database whose roles should be listed.
-                Values are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListDatabaseRolesPager:
-                The response for
-                   [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.ListDatabaseRolesRequest):
-            request = spanner_database_admin.ListDatabaseRolesRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_database_roles]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListDatabaseRolesPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def add_split_points(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.AddSplitPointsRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        split_points: Optional[
-            MutableSequence[spanner_database_admin.SplitPoints]
-        ] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.AddSplitPointsResponse:
-        r"""Adds split points to specified tables, indexes of a
-        database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_add_split_points():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.AddSplitPointsRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                response = client.add_split_points(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.AddSplitPointsRequest, dict]):
-                The request object. The request for
-                [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-            database (str):
-                Required. The database on whose tables/indexes split
-                points are to be added. Values are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>``.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            split_points (MutableSequence[google.cloud.spanner_admin_database_v1.types.SplitPoints]):
-                Required. The split points to add.
-                This corresponds to the ``split_points`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.AddSplitPointsResponse:
-                The response for
-                   [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, split_points]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_database_admin.AddSplitPointsRequest):
-            request = spanner_database_admin.AddSplitPointsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-            if split_points is not None:
-                request.split_points = split_points
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.add_split_points]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def create_backup_schedule(
-        self,
-        request: Optional[
-            Union[gsad_backup_schedule.CreateBackupScheduleRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        backup_schedule: Optional[gsad_backup_schedule.BackupSchedule] = None,
-        backup_schedule_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> gsad_backup_schedule.BackupSchedule:
-        r"""Creates a new backup schedule.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_create_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.CreateBackupScheduleRequest(
-                    parent="parent_value",
-                    backup_schedule_id="backup_schedule_id_value",
-                )
-
-                # Make the request
-                response = client.create_backup_schedule(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.CreateBackupScheduleRequest, dict]):
-                The request object. The request for
-                [CreateBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackupSchedule].
-            parent (str):
-                Required. The name of the database
-                that this backup schedule applies to.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_schedule (google.cloud.spanner_admin_database_v1.types.BackupSchedule):
-                Required. The backup schedule to
-                create.
-
-                This corresponds to the ``backup_schedule`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            backup_schedule_id (str):
-                Required. The Id to use for the backup schedule. The
-                ``backup_schedule_id`` appended to ``parent`` forms the
-                full backup schedule name of the form
-                ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-
-                This corresponds to the ``backup_schedule_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.BackupSchedule:
-                BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, backup_schedule, backup_schedule_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup_schedule.CreateBackupScheduleRequest):
-            request = gsad_backup_schedule.CreateBackupScheduleRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if backup_schedule is not None:
-                request.backup_schedule = backup_schedule
-            if backup_schedule_id is not None:
-                request.backup_schedule_id = backup_schedule_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.create_backup_schedule]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_backup_schedule(
-        self,
-        request: Optional[Union[backup_schedule.GetBackupScheduleRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> backup_schedule.BackupSchedule:
-        r"""Gets backup schedule for the input schedule name.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_get_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.GetBackupScheduleRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = client.get_backup_schedule(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.GetBackupScheduleRequest, dict]):
-                The request object. The request for
-                [GetBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.GetBackupSchedule].
-            name (str):
-                Required. The name of the schedule to retrieve. Values
-                are of the form
-                ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.BackupSchedule:
-                BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup_schedule.GetBackupScheduleRequest):
-            request = backup_schedule.GetBackupScheduleRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_backup_schedule]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def update_backup_schedule(
-        self,
-        request: Optional[
-            Union[gsad_backup_schedule.UpdateBackupScheduleRequest, dict]
-        ] = None,
-        *,
-        backup_schedule: Optional[gsad_backup_schedule.BackupSchedule] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> gsad_backup_schedule.BackupSchedule:
-        r"""Updates a backup schedule.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_update_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.UpdateBackupScheduleRequest(
-                )
-
-                # Make the request
-                response = client.update_backup_schedule(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.UpdateBackupScheduleRequest, dict]):
-                The request object. The request for
-                [UpdateBackupScheduleRequest][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackupSchedule].
-            backup_schedule (google.cloud.spanner_admin_database_v1.types.BackupSchedule):
-                Required. The backup schedule to update.
-                ``backup_schedule.name``, and the fields to be updated
-                as specified by ``update_mask`` are required. Other
-                fields are ignored.
-
-                This corresponds to the ``backup_schedule`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (google.protobuf.field_mask_pb2.FieldMask):
-                Required. A mask specifying which
-                fields in the BackupSchedule resource
-                should be updated. This mask is relative
-                to the BackupSchedule resource, not to
-                the request message. The field mask must
-                always be specified; this prevents any
-                future fields from being erased
-                accidentally.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.BackupSchedule:
-                BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [backup_schedule, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, gsad_backup_schedule.UpdateBackupScheduleRequest):
-            request = gsad_backup_schedule.UpdateBackupScheduleRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if backup_schedule is not None:
-                request.backup_schedule = backup_schedule
-            if update_mask is not None:
-                request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.update_backup_schedule]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("backup_schedule.name", request.backup_schedule.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def delete_backup_schedule(
-        self,
-        request: Optional[
-            Union[backup_schedule.DeleteBackupScheduleRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a backup schedule.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_delete_backup_schedule():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.DeleteBackupScheduleRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                client.delete_backup_schedule(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.DeleteBackupScheduleRequest, dict]):
-                The request object. The request for
-                [DeleteBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackupSchedule].
-            name (str):
-                Required. The name of the schedule to delete. Values are
-                of the form
-                ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup_schedule.DeleteBackupScheduleRequest):
-            request = backup_schedule.DeleteBackupScheduleRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.delete_backup_schedule]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def list_backup_schedules(
-        self,
-        request: Optional[
-            Union[backup_schedule.ListBackupSchedulesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListBackupSchedulesPager:
-        r"""Lists all the backup schedules for the database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_list_backup_schedules():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.ListBackupSchedulesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_backup_schedules(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesRequest, dict]):
-                The request object. The request for
-                [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-            parent (str):
-                Required. Database is the parent
-                resource whose backup schedules should
-                be listed. Values are of the form
-                projects/<project>/instances/<instance>/databases/<database>
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.services.database_admin.pagers.ListBackupSchedulesPager:
-                The response for
-                   [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, backup_schedule.ListBackupSchedulesRequest):
-            request = backup_schedule.ListBackupSchedulesRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_backup_schedules]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListBackupSchedulesPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def internal_update_graph_operation(
-        self,
-        request: Optional[
-            Union[spanner_database_admin.InternalUpdateGraphOperationRequest, dict]
-        ] = None,
-        *,
-        database: Optional[str] = None,
-        operation_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_database_admin.InternalUpdateGraphOperationResponse:
-        r"""This is an internal API called by Spanner Graph jobs.
-        You should never need to call this API directly.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_database_v1
-
-            def sample_internal_update_graph_operation():
-                # Create a client
-                client = spanner_admin_database_v1.DatabaseAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_database_v1.InternalUpdateGraphOperationRequest(
-                    database="database_value",
-                    operation_id="operation_id_value",
-                    vm_identity_token="vm_identity_token_value",
-                )
-
-                # Make the request
-                response = client.internal_update_graph_operation(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_database_v1.types.InternalUpdateGraphOperationRequest, dict]):
-                The request object. Internal request proto, do not use
-                directly.
-            database (str):
-                Internal field, do not use directly.
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            operation_id (str):
-                Internal field, do not use directly.
-                This corresponds to the ``operation_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_database_v1.types.InternalUpdateGraphOperationResponse:
-                Internal response proto, do not use
-                directly.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, operation_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_database_admin.InternalUpdateGraphOperationRequest
-        ):
-            request = spanner_database_admin.InternalUpdateGraphOperationRequest(
-                request
-            )
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-            if operation_id is not None:
-                request.operation_id = operation_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[
-            self._transport.internal_update_graph_operation
-        ]
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def __enter__(self) -> "DatabaseAdminClient":
-        return self
-
-    def __exit__(self, type, value, traceback):
-        """Releases underlying transport's resources.
-
-        .. warning::
-            ONLY use as a context manager if the transport is NOT shared
-            with other clients! Exiting the with block will CLOSE the transport
-            and may cause errors in other clients!
-        """
-        self.transport.close()
-
-    def list_operations(
-        self,
-        request: Optional[operations_pb2.ListOperationsRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.ListOperationsResponse:
-        r"""Lists operations that match the specified filter in the request.
-
-        Args:
-            request (:class:`~.operations_pb2.ListOperationsRequest`):
-                The request object. Request message for
-                `ListOperations` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.ListOperationsResponse:
-                Response message for ``ListOperations`` method.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.ListOperationsRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_operations]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        try:
-            # Send the request.
-            response = rpc(
-                request,
-                retry=retry,
-                timeout=timeout,
-                metadata=metadata,
-            )
-
-            # Done; return the response.
-            return response
-        except core_exceptions.GoogleAPICallError as e:
-            self._add_cred_info_for_auth_errors(e)
-            raise e
-
-    def get_operation(
-        self,
-        request: Optional[operations_pb2.GetOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.Operation:
-        r"""Gets the latest state of a long-running operation.
-
-        Args:
-            request (:class:`~.operations_pb2.GetOperationRequest`):
-                The request object. Request message for
-                `GetOperation` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.Operation:
-                An ``Operation`` object.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.GetOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        try:
-            # Send the request.
-            response = rpc(
-                request,
-                retry=retry,
-                timeout=timeout,
-                metadata=metadata,
-            )
-
-            # Done; return the response.
-            return response
-        except core_exceptions.GoogleAPICallError as e:
-            self._add_cred_info_for_auth_errors(e)
-            raise e
-
-    def delete_operation(
-        self,
-        request: Optional[operations_pb2.DeleteOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a long-running operation.
-
-        This method indicates that the client is no longer interested
-        in the operation result. It does not cancel the operation.
-        If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.DeleteOperationRequest`):
-                The request object. Request message for
-                `DeleteOperation` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.DeleteOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.delete_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def cancel_operation(
-        self,
-        request: Optional[operations_pb2.CancelOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Starts asynchronous cancellation on a long-running operation.
-
-        The server makes a best effort to cancel the operation, but success
-        is not guaranteed.  If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.CancelOperationRequest`):
-                The request object. Request message for
-                `CancelOperation` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.CancelOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.cancel_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-__all__ = ("DatabaseAdminClient",)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/pagers.py b/google/cloud/spanner_admin_database_v1/services/database_admin/pagers.py
deleted file mode 100644
index 233e4c1aed..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/pagers.py
+++ /dev/null
@@ -1,993 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from typing import (
-    Any,
-    AsyncIterator,
-    Awaitable,
-    Callable,
-    Iterator,
-    Optional,
-    Sequence,
-    Tuple,
-    Union,
-)
-
-from google.api_core import gapic_v1
-from google.api_core import retry as retries
-from google.api_core import retry_async as retries_async
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-    OptionalAsyncRetry = Union[
-        retries_async.AsyncRetry, gapic_v1.method._MethodDefault, None
-    ]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-    OptionalAsyncRetry = Union[retries_async.AsyncRetry, object, None]  # type: ignore
-
-from google.longrunning import operations_pb2  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.types import (
-    backup,
-    backup_schedule,
-    spanner_database_admin,
-)
-
-
-class ListDatabasesPager:
-    """A pager for iterating through ``list_databases`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListDatabasesResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``databases`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListDatabases`` requests and continue to iterate
-    through the ``databases`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListDatabasesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., spanner_database_admin.ListDatabasesResponse],
-        request: spanner_database_admin.ListDatabasesRequest,
-        response: spanner_database_admin.ListDatabasesResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListDatabasesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListDatabasesResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_database_admin.ListDatabasesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[spanner_database_admin.ListDatabasesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[spanner_database_admin.Database]:
-        for page in self.pages:
-            yield from page.databases
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListDatabasesAsyncPager:
-    """A pager for iterating through ``list_databases`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListDatabasesResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``databases`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListDatabases`` requests and continue to iterate
-    through the ``databases`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListDatabasesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., Awaitable[spanner_database_admin.ListDatabasesResponse]],
-        request: spanner_database_admin.ListDatabasesRequest,
-        response: spanner_database_admin.ListDatabasesResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListDatabasesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListDatabasesResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_database_admin.ListDatabasesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_database_admin.ListDatabasesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[spanner_database_admin.Database]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.databases:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListBackupsPager:
-    """A pager for iterating through ``list_backups`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListBackupsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``backups`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListBackups`` requests and continue to iterate
-    through the ``backups`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListBackupsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., backup.ListBackupsResponse],
-        request: backup.ListBackupsRequest,
-        response: backup.ListBackupsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListBackupsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListBackupsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = backup.ListBackupsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[backup.ListBackupsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[backup.Backup]:
-        for page in self.pages:
-            yield from page.backups
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListBackupsAsyncPager:
-    """A pager for iterating through ``list_backups`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListBackupsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``backups`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListBackups`` requests and continue to iterate
-    through the ``backups`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListBackupsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., Awaitable[backup.ListBackupsResponse]],
-        request: backup.ListBackupsRequest,
-        response: backup.ListBackupsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListBackupsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListBackupsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = backup.ListBackupsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(self) -> AsyncIterator[backup.ListBackupsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[backup.Backup]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.backups:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListDatabaseOperationsPager:
-    """A pager for iterating through ``list_database_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListDatabaseOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., spanner_database_admin.ListDatabaseOperationsResponse],
-        request: spanner_database_admin.ListDatabaseOperationsRequest,
-        response: spanner_database_admin.ListDatabaseOperationsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_database_admin.ListDatabaseOperationsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[spanner_database_admin.ListDatabaseOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[operations_pb2.Operation]:
-        for page in self.pages:
-            yield from page.operations
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListDatabaseOperationsAsyncPager:
-    """A pager for iterating through ``list_database_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListDatabaseOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ..., Awaitable[spanner_database_admin.ListDatabaseOperationsResponse]
-        ],
-        request: spanner_database_admin.ListDatabaseOperationsRequest,
-        response: spanner_database_admin.ListDatabaseOperationsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListDatabaseOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_database_admin.ListDatabaseOperationsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_database_admin.ListDatabaseOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[operations_pb2.Operation]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.operations:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListBackupOperationsPager:
-    """A pager for iterating through ``list_backup_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListBackupOperationsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListBackupOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListBackupOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., backup.ListBackupOperationsResponse],
-        request: backup.ListBackupOperationsRequest,
-        response: backup.ListBackupOperationsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListBackupOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListBackupOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = backup.ListBackupOperationsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[backup.ListBackupOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[operations_pb2.Operation]:
-        for page in self.pages:
-            yield from page.operations
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListBackupOperationsAsyncPager:
-    """A pager for iterating through ``list_backup_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListBackupOperationsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListBackupOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListBackupOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., Awaitable[backup.ListBackupOperationsResponse]],
-        request: backup.ListBackupOperationsRequest,
-        response: backup.ListBackupOperationsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListBackupOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListBackupOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = backup.ListBackupOperationsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(self) -> AsyncIterator[backup.ListBackupOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[operations_pb2.Operation]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.operations:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListDatabaseRolesPager:
-    """A pager for iterating through ``list_database_roles`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``database_roles`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListDatabaseRoles`` requests and continue to iterate
-    through the ``database_roles`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., spanner_database_admin.ListDatabaseRolesResponse],
-        request: spanner_database_admin.ListDatabaseRolesRequest,
-        response: spanner_database_admin.ListDatabaseRolesResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_database_admin.ListDatabaseRolesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[spanner_database_admin.ListDatabaseRolesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[spanner_database_admin.DatabaseRole]:
-        for page in self.pages:
-            yield from page.database_roles
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListDatabaseRolesAsyncPager:
-    """A pager for iterating through ``list_database_roles`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``database_roles`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListDatabaseRoles`` requests and continue to iterate
-    through the ``database_roles`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ..., Awaitable[spanner_database_admin.ListDatabaseRolesResponse]
-        ],
-        request: spanner_database_admin.ListDatabaseRolesRequest,
-        response: spanner_database_admin.ListDatabaseRolesResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListDatabaseRolesResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_database_admin.ListDatabaseRolesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_database_admin.ListDatabaseRolesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[spanner_database_admin.DatabaseRole]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.database_roles:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListBackupSchedulesPager:
-    """A pager for iterating through ``list_backup_schedules`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``backup_schedules`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListBackupSchedules`` requests and continue to iterate
-    through the ``backup_schedules`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., backup_schedule.ListBackupSchedulesResponse],
-        request: backup_schedule.ListBackupSchedulesRequest,
-        response: backup_schedule.ListBackupSchedulesResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = backup_schedule.ListBackupSchedulesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[backup_schedule.ListBackupSchedulesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[backup_schedule.BackupSchedule]:
-        for page in self.pages:
-            yield from page.backup_schedules
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListBackupSchedulesAsyncPager:
-    """A pager for iterating through ``list_backup_schedules`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``backup_schedules`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListBackupSchedules`` requests and continue to iterate
-    through the ``backup_schedules`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., Awaitable[backup_schedule.ListBackupSchedulesResponse]],
-        request: backup_schedule.ListBackupSchedulesRequest,
-        response: backup_schedule.ListBackupSchedulesResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_database_v1.types.ListBackupSchedulesResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = backup_schedule.ListBackupSchedulesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(self) -> AsyncIterator[backup_schedule.ListBackupSchedulesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[backup_schedule.BackupSchedule]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.backup_schedules:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/README.rst b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/README.rst
deleted file mode 100644
index f70c023a98..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/README.rst
+++ /dev/null
@@ -1,9 +0,0 @@
-
-transport inheritance structure
-_______________________________
-
-`DatabaseAdminTransport` is the ABC for all transports.
-- public child `DatabaseAdminGrpcTransport` for sync gRPC transport (defined in `grpc.py`).
-- public child `DatabaseAdminGrpcAsyncIOTransport` for async gRPC transport (defined in `grpc_asyncio.py`).
-- private child `_BaseDatabaseAdminRestTransport` for base REST transport with inner classes `_BaseMETHOD` (defined in `rest_base.py`).
-- public child `DatabaseAdminRestTransport` for sync REST transport with inner classes `METHOD` derived from the parent's corresponding `_BaseMETHOD` classes (defined in `rest.py`).
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/__init__.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/__init__.py
deleted file mode 100644
index e630837fe9..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/__init__.py
+++ /dev/null
@@ -1,36 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-from typing import Dict, Type
-
-from .base import DatabaseAdminTransport
-from .grpc import DatabaseAdminGrpcTransport
-from .grpc_asyncio import DatabaseAdminGrpcAsyncIOTransport
-from .rest import DatabaseAdminRestInterceptor, DatabaseAdminRestTransport
-
-# Compile a registry of transports.
-_transport_registry = OrderedDict()  # type: Dict[str, Type[DatabaseAdminTransport]]
-_transport_registry["grpc"] = DatabaseAdminGrpcTransport
-_transport_registry["grpc_asyncio"] = DatabaseAdminGrpcAsyncIOTransport
-_transport_registry["rest"] = DatabaseAdminRestTransport
-
-__all__ = (
-    "DatabaseAdminTransport",
-    "DatabaseAdminGrpcTransport",
-    "DatabaseAdminGrpcAsyncIOTransport",
-    "DatabaseAdminRestTransport",
-    "DatabaseAdminRestInterceptor",
-)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/base.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/base.py
deleted file mode 100644
index 6981ed7d24..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/base.py
+++ /dev/null
@@ -1,836 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import abc
-from typing import Awaitable, Callable, Dict, Optional, Sequence, Union
-
-import google.api_core
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1, operations_v1
-from google.api_core import retry as retries
-import google.auth  # type: ignore
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-from google.protobuf import empty_pb2  # type: ignore
-
-from google.cloud.spanner_admin_database_v1 import gapic_version as package_version
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-from google.cloud.spanner_admin_database_v1.types import spanner_database_admin
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-class DatabaseAdminTransport(abc.ABC):
-    """Abstract transport class for DatabaseAdmin."""
-
-    AUTH_SCOPES = (
-        "https://www.googleapis.com/auth/cloud-platform",
-        "https://www.googleapis.com/auth/spanner.admin",
-    )
-
-    DEFAULT_HOST: str = "spanner.googleapis.com"
-
-    def __init__(
-        self,
-        *,
-        host: str = DEFAULT_HOST,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-        **kwargs,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A list of scopes.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-        """
-
-        scopes_kwargs = {"scopes": scopes, "default_scopes": self.AUTH_SCOPES}
-
-        # Save the scopes.
-        self._scopes = scopes
-        if not hasattr(self, "_ignore_credentials"):
-            self._ignore_credentials: bool = False
-
-        # If no credentials are provided, then determine the appropriate
-        # defaults.
-        if credentials and credentials_file:
-            raise core_exceptions.DuplicateCredentialArgs(
-                "'credentials_file' and 'credentials' are mutually exclusive"
-            )
-
-        if credentials_file is not None:
-            credentials, _ = google.auth.load_credentials_from_file(
-                credentials_file, **scopes_kwargs, quota_project_id=quota_project_id
-            )
-        elif credentials is None and not self._ignore_credentials:
-            credentials, _ = google.auth.default(
-                **scopes_kwargs, quota_project_id=quota_project_id
-            )
-            # Don't apply audience if the credentials file passed from user.
-            if hasattr(credentials, "with_gdch_audience"):
-                credentials = credentials.with_gdch_audience(
-                    api_audience if api_audience else host
-                )
-
-        # If the credentials are service account credentials, then always try to use self signed JWT.
-        if (
-            always_use_jwt_access
-            and isinstance(credentials, service_account.Credentials)
-            and hasattr(service_account.Credentials, "with_always_use_jwt_access")
-        ):
-            credentials = credentials.with_always_use_jwt_access(True)
-
-        # Save the credentials.
-        self._credentials = credentials
-
-        # Save the hostname. Default to port 443 (HTTPS) if none is specified.
-        if ":" not in host:
-            host += ":443"
-        self._host = host
-
-    @property
-    def host(self):
-        return self._host
-
-    def _prep_wrapped_messages(self, client_info):
-        # Precompute the wrapped methods.
-        self._wrapped_methods = {
-            self.list_databases: gapic_v1.method.wrap_method(
-                self.list_databases,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_database: gapic_v1.method.wrap_method(
-                self.create_database,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_database: gapic_v1.method.wrap_method(
-                self.get_database,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_database: gapic_v1.method.wrap_method(
-                self.update_database,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_database_ddl: gapic_v1.method.wrap_method(
-                self.update_database_ddl,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.drop_database: gapic_v1.method.wrap_method(
-                self.drop_database,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_database_ddl: gapic_v1.method.wrap_method(
-                self.get_database_ddl,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.set_iam_policy: gapic_v1.method.wrap_method(
-                self.set_iam_policy,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.get_iam_policy: gapic_v1.method.wrap_method(
-                self.get_iam_policy,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.test_iam_permissions: gapic_v1.method.wrap_method(
-                self.test_iam_permissions,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.create_backup: gapic_v1.method.wrap_method(
-                self.create_backup,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.copy_backup: gapic_v1.method.wrap_method(
-                self.copy_backup,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_backup: gapic_v1.method.wrap_method(
-                self.get_backup,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_backup: gapic_v1.method.wrap_method(
-                self.update_backup,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_backup: gapic_v1.method.wrap_method(
-                self.delete_backup,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_backups: gapic_v1.method.wrap_method(
-                self.list_backups,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.restore_database: gapic_v1.method.wrap_method(
-                self.restore_database,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_database_operations: gapic_v1.method.wrap_method(
-                self.list_database_operations,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_backup_operations: gapic_v1.method.wrap_method(
-                self.list_backup_operations,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_database_roles: gapic_v1.method.wrap_method(
-                self.list_database_roles,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.add_split_points: gapic_v1.method.wrap_method(
-                self.add_split_points,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_backup_schedule: gapic_v1.method.wrap_method(
-                self.create_backup_schedule,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_backup_schedule: gapic_v1.method.wrap_method(
-                self.get_backup_schedule,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_backup_schedule: gapic_v1.method.wrap_method(
-                self.update_backup_schedule,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_backup_schedule: gapic_v1.method.wrap_method(
-                self.delete_backup_schedule,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_backup_schedules: gapic_v1.method.wrap_method(
-                self.list_backup_schedules,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.internal_update_graph_operation: gapic_v1.method.wrap_method(
-                self.internal_update_graph_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.cancel_operation: gapic_v1.method.wrap_method(
-                self.cancel_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_operation: gapic_v1.method.wrap_method(
-                self.delete_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.get_operation: gapic_v1.method.wrap_method(
-                self.get_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_operations: gapic_v1.method.wrap_method(
-                self.list_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-        }
-
-    def close(self):
-        """Closes resources associated with the transport.
-
-        .. warning::
-             Only call this method if the transport is NOT shared
-             with other clients - this may cause errors in other clients!
-        """
-        raise NotImplementedError()
-
-    @property
-    def operations_client(self):
-        """Return the client designed to process long-running operations."""
-        raise NotImplementedError()
-
-    @property
-    def list_databases(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabasesRequest],
-        Union[
-            spanner_database_admin.ListDatabasesResponse,
-            Awaitable[spanner_database_admin.ListDatabasesResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def create_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.CreateDatabaseRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseRequest],
-        Union[
-            spanner_database_admin.Database, Awaitable[spanner_database_admin.Database]
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def update_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def update_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseDdlRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def drop_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.DropDatabaseRequest],
-        Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseDdlRequest],
-        Union[
-            spanner_database_admin.GetDatabaseDdlResponse,
-            Awaitable[spanner_database_admin.GetDatabaseDdlResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.SetIamPolicyRequest],
-        Union[policy_pb2.Policy, Awaitable[policy_pb2.Policy]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.GetIamPolicyRequest],
-        Union[policy_pb2.Policy, Awaitable[policy_pb2.Policy]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        Union[
-            iam_policy_pb2.TestIamPermissionsResponse,
-            Awaitable[iam_policy_pb2.TestIamPermissionsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def create_backup(
-        self,
-    ) -> Callable[
-        [gsad_backup.CreateBackupRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def copy_backup(
-        self,
-    ) -> Callable[
-        [backup.CopyBackupRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_backup(
-        self,
-    ) -> Callable[
-        [backup.GetBackupRequest], Union[backup.Backup, Awaitable[backup.Backup]]
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def update_backup(
-        self,
-    ) -> Callable[
-        [gsad_backup.UpdateBackupRequest],
-        Union[gsad_backup.Backup, Awaitable[gsad_backup.Backup]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def delete_backup(
-        self,
-    ) -> Callable[
-        [backup.DeleteBackupRequest], Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]]
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_backups(
-        self,
-    ) -> Callable[
-        [backup.ListBackupsRequest],
-        Union[backup.ListBackupsResponse, Awaitable[backup.ListBackupsResponse]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def restore_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.RestoreDatabaseRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_database_operations(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseOperationsRequest],
-        Union[
-            spanner_database_admin.ListDatabaseOperationsResponse,
-            Awaitable[spanner_database_admin.ListDatabaseOperationsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_backup_operations(
-        self,
-    ) -> Callable[
-        [backup.ListBackupOperationsRequest],
-        Union[
-            backup.ListBackupOperationsResponse,
-            Awaitable[backup.ListBackupOperationsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_database_roles(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseRolesRequest],
-        Union[
-            spanner_database_admin.ListDatabaseRolesResponse,
-            Awaitable[spanner_database_admin.ListDatabaseRolesResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def add_split_points(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.AddSplitPointsRequest],
-        Union[
-            spanner_database_admin.AddSplitPointsResponse,
-            Awaitable[spanner_database_admin.AddSplitPointsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def create_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.CreateBackupScheduleRequest],
-        Union[
-            gsad_backup_schedule.BackupSchedule,
-            Awaitable[gsad_backup_schedule.BackupSchedule],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_backup_schedule(
-        self,
-    ) -> Callable[
-        [backup_schedule.GetBackupScheduleRequest],
-        Union[
-            backup_schedule.BackupSchedule, Awaitable[backup_schedule.BackupSchedule]
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def update_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.UpdateBackupScheduleRequest],
-        Union[
-            gsad_backup_schedule.BackupSchedule,
-            Awaitable[gsad_backup_schedule.BackupSchedule],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def delete_backup_schedule(
-        self,
-    ) -> Callable[
-        [backup_schedule.DeleteBackupScheduleRequest],
-        Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_backup_schedules(
-        self,
-    ) -> Callable[
-        [backup_schedule.ListBackupSchedulesRequest],
-        Union[
-            backup_schedule.ListBackupSchedulesResponse,
-            Awaitable[backup_schedule.ListBackupSchedulesResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def internal_update_graph_operation(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.InternalUpdateGraphOperationRequest],
-        Union[
-            spanner_database_admin.InternalUpdateGraphOperationResponse,
-            Awaitable[spanner_database_admin.InternalUpdateGraphOperationResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_operations(
-        self,
-    ) -> Callable[
-        [operations_pb2.ListOperationsRequest],
-        Union[
-            operations_pb2.ListOperationsResponse,
-            Awaitable[operations_pb2.ListOperationsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_operation(
-        self,
-    ) -> Callable[
-        [operations_pb2.GetOperationRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def cancel_operation(
-        self,
-    ) -> Callable[[operations_pb2.CancelOperationRequest], None,]:
-        raise NotImplementedError()
-
-    @property
-    def delete_operation(
-        self,
-    ) -> Callable[[operations_pb2.DeleteOperationRequest], None,]:
-        raise NotImplementedError()
-
-    @property
-    def kind(self) -> str:
-        raise NotImplementedError()
-
-
-__all__ = ("DatabaseAdminTransport",)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py
deleted file mode 100644
index 8af5613f55..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc.py
+++ /dev/null
@@ -1,1337 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import json
-import logging as std_logging
-import pickle
-from typing import Callable, Dict, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import gapic_v1, grpc_helpers, operations_v1
-import google.auth  # type: ignore
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf.json_format import MessageToJson
-import google.protobuf.message
-import grpc  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-from google.cloud.spanner_admin_database_v1.types import spanner_database_admin
-
-from .base import DEFAULT_CLIENT_INFO, DatabaseAdminTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class _LoggingClientInterceptor(grpc.UnaryUnaryClientInterceptor):  # pragma: NO COVER
-    def intercept_unary_unary(self, continuation, client_call_details, request):
-        logging_enabled = CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        )
-        if logging_enabled:  # pragma: NO COVER
-            request_metadata = client_call_details.metadata
-            if isinstance(request, proto.Message):
-                request_payload = type(request).to_json(request)
-            elif isinstance(request, google.protobuf.message.Message):
-                request_payload = MessageToJson(request)
-            else:
-                request_payload = f"{type(request).__name__}: {pickle.dumps(request)}"
-
-            request_metadata = {
-                key: value.decode("utf-8") if isinstance(value, bytes) else value
-                for key, value in request_metadata
-            }
-            grpc_request = {
-                "payload": request_payload,
-                "requestMethod": "grpc",
-                "metadata": dict(request_metadata),
-            }
-            _LOGGER.debug(
-                f"Sending request for {client_call_details.method}",
-                extra={
-                    "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                    "rpcName": str(client_call_details.method),
-                    "request": grpc_request,
-                    "metadata": grpc_request["metadata"],
-                },
-            )
-        response = continuation(client_call_details, request)
-        if logging_enabled:  # pragma: NO COVER
-            response_metadata = response.trailing_metadata()
-            # Convert gRPC metadata `<class 'grpc.aio._metadata.Metadata'>` to list of tuples
-            metadata = (
-                dict([(k, str(v)) for k, v in response_metadata])
-                if response_metadata
-                else None
-            )
-            result = response.result()
-            if isinstance(result, proto.Message):
-                response_payload = type(result).to_json(result)
-            elif isinstance(result, google.protobuf.message.Message):
-                response_payload = MessageToJson(result)
-            else:
-                response_payload = f"{type(result).__name__}: {pickle.dumps(result)}"
-            grpc_response = {
-                "payload": response_payload,
-                "metadata": metadata,
-                "status": "OK",
-            }
-            _LOGGER.debug(
-                f"Received response for {client_call_details.method}.",
-                extra={
-                    "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                    "rpcName": client_call_details.method,
-                    "response": grpc_response,
-                    "metadata": grpc_response["metadata"],
-                },
-            )
-        return response
-
-
-class DatabaseAdminGrpcTransport(DatabaseAdminTransport):
-    """gRPC backend transport for DatabaseAdmin.
-
-    Cloud Spanner Database Admin API
-
-    The Cloud Spanner Database Admin API can be used to:
-
-    - create, drop, and list databases
-    - update the schema of pre-existing databases
-    - create, delete, copy and list backups for a database
-    - restore a database from an existing backup
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends protocol buffers over the wire using gRPC (which is built on
-    top of HTTP/2); the ``grpcio`` package must be installed.
-    """
-
-    _stubs: Dict[str, Callable]
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        channel: Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]] = None,
-        api_mtls_endpoint: Optional[str] = None,
-        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-                This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if a ``channel`` instance is provided.
-                This argument will be removed in the next major version of this library.
-            scopes (Optional(Sequence[str])): A list of scopes. This argument is
-                ignored if a ``channel`` instance is provided.
-            channel (Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]]):
-                A ``Channel`` instance through which to make calls, or a Callable
-                that constructs and returns one. If set to None, ``self.create_channel``
-                is used to create the channel. If a Callable is given, it will be called
-                with the same arguments as used in ``self.create_channel``.
-            api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
-                If provided, it overrides the ``host`` argument and tries to create
-                a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or application default SSL credentials.
-            client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                Deprecated. A callback to provide client SSL certificate bytes and
-                private key bytes, both in PEM format. It is ignored if
-                ``api_mtls_endpoint`` is None.
-            ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for the grpc channel. It is ignored if a ``channel`` instance is provided.
-            client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure a mutual TLS channel. It is
-                ignored if a ``channel`` instance or ``ssl_channel_credentials`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-
-        Raises:
-          google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
-              creation failed for any reason.
-          google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-        self._grpc_channel = None
-        self._ssl_channel_credentials = ssl_channel_credentials
-        self._stubs: Dict[str, Callable] = {}
-        self._operations_client: Optional[operations_v1.OperationsClient] = None
-
-        if api_mtls_endpoint:
-            warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
-        if client_cert_source:
-            warnings.warn("client_cert_source is deprecated", DeprecationWarning)
-
-        if isinstance(channel, grpc.Channel):
-            # Ignore credentials if a channel was passed.
-            credentials = None
-            self._ignore_credentials = True
-            # If a channel was explicitly provided, set it.
-            self._grpc_channel = channel
-            self._ssl_channel_credentials = None
-
-        else:
-            if api_mtls_endpoint:
-                host = api_mtls_endpoint
-
-                # Create SSL credentials with client_cert_source or application
-                # default SSL credentials.
-                if client_cert_source:
-                    cert, key = client_cert_source()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-                else:
-                    self._ssl_channel_credentials = SslCredentials().ssl_credentials
-
-            else:
-                if client_cert_source_for_mtls and not ssl_channel_credentials:
-                    cert, key = client_cert_source_for_mtls()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-
-        # The base transport sets the host, credentials and scopes
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            scopes=scopes,
-            quota_project_id=quota_project_id,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-        if not self._grpc_channel:
-            # initialize with the provided callable or the default channel
-            channel_init = channel or type(self).create_channel
-            self._grpc_channel = channel_init(
-                self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                # Set ``credentials_file`` to ``None`` here as
-                # the credentials that we saved earlier should be used.
-                credentials_file=None,
-                scopes=self._scopes,
-                ssl_credentials=self._ssl_channel_credentials,
-                quota_project_id=quota_project_id,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-
-        self._interceptor = _LoggingClientInterceptor()
-        self._logged_channel = grpc.intercept_channel(
-            self._grpc_channel, self._interceptor
-        )
-
-        # Wrap messages. This must be done after self._logged_channel exists
-        self._prep_wrapped_messages(client_info)
-
-    @classmethod
-    def create_channel(
-        cls,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        **kwargs,
-    ) -> grpc.Channel:
-        """Create and return a gRPC channel object.
-        Args:
-            host (Optional[str]): The host for the channel to use.
-            credentials (Optional[~.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify this application to the service. If
-                none are specified, the client will attempt to ascertain
-                the credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.  This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            kwargs (Optional[dict]): Keyword arguments, which are passed to the
-                channel creation.
-        Returns:
-            grpc.Channel: A gRPC channel object.
-
-        Raises:
-            google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-
-        return grpc_helpers.create_channel(
-            host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            quota_project_id=quota_project_id,
-            default_scopes=cls.AUTH_SCOPES,
-            scopes=scopes,
-            default_host=cls.DEFAULT_HOST,
-            **kwargs,
-        )
-
-    @property
-    def grpc_channel(self) -> grpc.Channel:
-        """Return the channel designed to connect to this service."""
-        return self._grpc_channel
-
-    @property
-    def operations_client(self) -> operations_v1.OperationsClient:
-        """Create the client designed to process long-running operations.
-
-        This property caches on the instance; repeated calls return the same
-        client.
-        """
-        # Quick check: Only create a new client if we do not already have one.
-        if self._operations_client is None:
-            self._operations_client = operations_v1.OperationsClient(
-                self._logged_channel
-            )
-
-        # Return the client from cache.
-        return self._operations_client
-
-    @property
-    def list_databases(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabasesRequest],
-        spanner_database_admin.ListDatabasesResponse,
-    ]:
-        r"""Return a callable for the list databases method over gRPC.
-
-        Lists Cloud Spanner databases.
-
-        Returns:
-            Callable[[~.ListDatabasesRequest],
-                    ~.ListDatabasesResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_databases" not in self._stubs:
-            self._stubs["list_databases"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabases",
-                request_serializer=spanner_database_admin.ListDatabasesRequest.serialize,
-                response_deserializer=spanner_database_admin.ListDatabasesResponse.deserialize,
-            )
-        return self._stubs["list_databases"]
-
-    @property
-    def create_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.CreateDatabaseRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the create database method over gRPC.
-
-        Creates a new Cloud Spanner database and starts to prepare it
-        for serving. The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format ``<database_name>/operations/<operation_id>`` and can be
-        used to track preparation of the database. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateDatabaseMetadata][google.spanner.admin.database.v1.CreateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        Returns:
-            Callable[[~.CreateDatabaseRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_database" not in self._stubs:
-            self._stubs["create_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CreateDatabase",
-                request_serializer=spanner_database_admin.CreateDatabaseRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_database"]
-
-    @property
-    def get_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseRequest], spanner_database_admin.Database
-    ]:
-        r"""Return a callable for the get database method over gRPC.
-
-        Gets the state of a Cloud Spanner database.
-
-        Returns:
-            Callable[[~.GetDatabaseRequest],
-                    ~.Database]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_database" not in self._stubs:
-            self._stubs["get_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetDatabase",
-                request_serializer=spanner_database_admin.GetDatabaseRequest.serialize,
-                response_deserializer=spanner_database_admin.Database.deserialize,
-            )
-        return self._stubs["get_database"]
-
-    @property
-    def update_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the update database method over gRPC.
-
-        Updates a Cloud Spanner database. The returned [long-running
-        operation][google.longrunning.Operation] can be used to track
-        the progress of updating the database. If the named database
-        does not exist, returns ``NOT_FOUND``.
-
-        While the operation is pending:
-
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field is set to true.
-        - Cancelling the operation is best-effort. If the cancellation
-          succeeds, the operation metadata's
-          [cancel_time][google.spanner.admin.database.v1.UpdateDatabaseMetadata.cancel_time]
-          is set, the updates are reverted, and the operation terminates
-          with a ``CANCELLED`` status.
-        - New UpdateDatabase requests will return a
-          ``FAILED_PRECONDITION`` error until the pending operation is
-          done (returns successfully or with error).
-        - Reading the database via the API continues to give the
-          pre-request values.
-
-        Upon completion of the returned operation:
-
-        - The new values are in effect and readable via the API.
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field becomes false.
-
-        The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``
-        and can be used to track the database modification. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseMetadata][google.spanner.admin.database.v1.UpdateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        Returns:
-            Callable[[~.UpdateDatabaseRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_database" not in self._stubs:
-            self._stubs["update_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateDatabase",
-                request_serializer=spanner_database_admin.UpdateDatabaseRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_database"]
-
-    @property
-    def update_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseDdlRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the update database ddl method over gRPC.
-
-        Updates the schema of a Cloud Spanner database by
-        creating/altering/dropping tables, columns, indexes, etc. The
-        returned [long-running operation][google.longrunning.Operation]
-        will have a name of the format
-        ``<database_name>/operations/<operation_id>`` and can be used to
-        track execution of the schema change(s). The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseDdlMetadata][google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata].
-        The operation has no response.
-
-        Returns:
-            Callable[[~.UpdateDatabaseDdlRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_database_ddl" not in self._stubs:
-            self._stubs["update_database_ddl"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateDatabaseDdl",
-                request_serializer=spanner_database_admin.UpdateDatabaseDdlRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_database_ddl"]
-
-    @property
-    def drop_database(
-        self,
-    ) -> Callable[[spanner_database_admin.DropDatabaseRequest], empty_pb2.Empty]:
-        r"""Return a callable for the drop database method over gRPC.
-
-        Drops (aka deletes) a Cloud Spanner database. Completed backups
-        for the database will be retained according to their
-        ``expire_time``. Note: Cloud Spanner might continue to accept
-        requests for a few seconds after the database has been deleted.
-
-        Returns:
-            Callable[[~.DropDatabaseRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "drop_database" not in self._stubs:
-            self._stubs["drop_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/DropDatabase",
-                request_serializer=spanner_database_admin.DropDatabaseRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["drop_database"]
-
-    @property
-    def get_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseDdlRequest],
-        spanner_database_admin.GetDatabaseDdlResponse,
-    ]:
-        r"""Return a callable for the get database ddl method over gRPC.
-
-        Returns the schema of a Cloud Spanner database as a list of
-        formatted DDL statements. This method does not show pending
-        schema updates, those may be queried using the
-        [Operations][google.longrunning.Operations] API.
-
-        Returns:
-            Callable[[~.GetDatabaseDdlRequest],
-                    ~.GetDatabaseDdlResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_database_ddl" not in self._stubs:
-            self._stubs["get_database_ddl"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetDatabaseDdl",
-                request_serializer=spanner_database_admin.GetDatabaseDdlRequest.serialize,
-                response_deserializer=spanner_database_admin.GetDatabaseDdlResponse.deserialize,
-            )
-        return self._stubs["get_database_ddl"]
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], policy_pb2.Policy]:
-        r"""Return a callable for the set iam policy method over gRPC.
-
-        Sets the access control policy on a database or backup resource.
-        Replaces any existing policy.
-
-        Authorization requires ``spanner.databases.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.SetIamPolicyRequest],
-                    ~.Policy]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "set_iam_policy" not in self._stubs:
-            self._stubs["set_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/SetIamPolicy",
-                request_serializer=iam_policy_pb2.SetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["set_iam_policy"]
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], policy_pb2.Policy]:
-        r"""Return a callable for the get iam policy method over gRPC.
-
-        Gets the access control policy for a database or backup
-        resource. Returns an empty policy if a database or backup exists
-        but does not have a policy set.
-
-        Authorization requires ``spanner.databases.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.GetIamPolicyRequest],
-                    ~.Policy]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_iam_policy" not in self._stubs:
-            self._stubs["get_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetIamPolicy",
-                request_serializer=iam_policy_pb2.GetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["get_iam_policy"]
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        iam_policy_pb2.TestIamPermissionsResponse,
-    ]:
-        r"""Return a callable for the test iam permissions method over gRPC.
-
-        Returns permissions that the caller has on the specified
-        database or backup resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner database
-        will result in a NOT_FOUND error if the user has
-        ``spanner.databases.list`` permission on the containing Cloud
-        Spanner instance. Otherwise returns an empty set of permissions.
-        Calling this method on a backup that does not exist will result
-        in a NOT_FOUND error if the user has ``spanner.backups.list``
-        permission on the containing instance.
-
-        Returns:
-            Callable[[~.TestIamPermissionsRequest],
-                    ~.TestIamPermissionsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "test_iam_permissions" not in self._stubs:
-            self._stubs["test_iam_permissions"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/TestIamPermissions",
-                request_serializer=iam_policy_pb2.TestIamPermissionsRequest.SerializeToString,
-                response_deserializer=iam_policy_pb2.TestIamPermissionsResponse.FromString,
-            )
-        return self._stubs["test_iam_permissions"]
-
-    @property
-    def create_backup(
-        self,
-    ) -> Callable[[gsad_backup.CreateBackupRequest], operations_pb2.Operation]:
-        r"""Return a callable for the create backup method over gRPC.
-
-        Starts creating a new Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track creation of the backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        creation and delete the backup. There can be only one pending
-        backup creation per database. Backup creation of different
-        databases can run concurrently.
-
-        Returns:
-            Callable[[~.CreateBackupRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_backup" not in self._stubs:
-            self._stubs["create_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CreateBackup",
-                request_serializer=gsad_backup.CreateBackupRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_backup"]
-
-    @property
-    def copy_backup(
-        self,
-    ) -> Callable[[backup.CopyBackupRequest], operations_pb2.Operation]:
-        r"""Return a callable for the copy backup method over gRPC.
-
-        Starts copying a Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track copying of the backup. The operation is
-        associated with the destination backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        copying and delete the destination backup. Concurrent CopyBackup
-        requests can run on the same source backup.
-
-        Returns:
-            Callable[[~.CopyBackupRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "copy_backup" not in self._stubs:
-            self._stubs["copy_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CopyBackup",
-                request_serializer=backup.CopyBackupRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["copy_backup"]
-
-    @property
-    def get_backup(self) -> Callable[[backup.GetBackupRequest], backup.Backup]:
-        r"""Return a callable for the get backup method over gRPC.
-
-        Gets metadata on a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        Returns:
-            Callable[[~.GetBackupRequest],
-                    ~.Backup]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_backup" not in self._stubs:
-            self._stubs["get_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetBackup",
-                request_serializer=backup.GetBackupRequest.serialize,
-                response_deserializer=backup.Backup.deserialize,
-            )
-        return self._stubs["get_backup"]
-
-    @property
-    def update_backup(
-        self,
-    ) -> Callable[[gsad_backup.UpdateBackupRequest], gsad_backup.Backup]:
-        r"""Return a callable for the update backup method over gRPC.
-
-        Updates a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        Returns:
-            Callable[[~.UpdateBackupRequest],
-                    ~.Backup]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_backup" not in self._stubs:
-            self._stubs["update_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateBackup",
-                request_serializer=gsad_backup.UpdateBackupRequest.serialize,
-                response_deserializer=gsad_backup.Backup.deserialize,
-            )
-        return self._stubs["update_backup"]
-
-    @property
-    def delete_backup(self) -> Callable[[backup.DeleteBackupRequest], empty_pb2.Empty]:
-        r"""Return a callable for the delete backup method over gRPC.
-
-        Deletes a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        Returns:
-            Callable[[~.DeleteBackupRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_backup" not in self._stubs:
-            self._stubs["delete_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/DeleteBackup",
-                request_serializer=backup.DeleteBackupRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_backup"]
-
-    @property
-    def list_backups(
-        self,
-    ) -> Callable[[backup.ListBackupsRequest], backup.ListBackupsResponse]:
-        r"""Return a callable for the list backups method over gRPC.
-
-        Lists completed and pending backups. Backups returned are
-        ordered by ``create_time`` in descending order, starting from
-        the most recent ``create_time``.
-
-        Returns:
-            Callable[[~.ListBackupsRequest],
-                    ~.ListBackupsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_backups" not in self._stubs:
-            self._stubs["list_backups"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListBackups",
-                request_serializer=backup.ListBackupsRequest.serialize,
-                response_deserializer=backup.ListBackupsResponse.deserialize,
-            )
-        return self._stubs["list_backups"]
-
-    @property
-    def restore_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.RestoreDatabaseRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the restore database method over gRPC.
-
-        Create a new database by restoring from a completed backup. The
-        new database must be in the same project and in an instance with
-        the same instance configuration as the instance containing the
-        backup. The returned database [long-running
-        operation][google.longrunning.Operation] has a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``,
-        and can be used to track the progress of the operation, and to
-        cancel it. The [metadata][google.longrunning.Operation.metadata]
-        field type is
-        [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] type is
-        [Database][google.spanner.admin.database.v1.Database], if
-        successful. Cancelling the returned operation will stop the
-        restore and delete the database. There can be only one database
-        being restored into an instance at a time. Once the restore
-        operation completes, a new restore operation can be initiated,
-        without waiting for the optimize operation associated with the
-        first restore to complete.
-
-        Returns:
-            Callable[[~.RestoreDatabaseRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "restore_database" not in self._stubs:
-            self._stubs["restore_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/RestoreDatabase",
-                request_serializer=spanner_database_admin.RestoreDatabaseRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["restore_database"]
-
-    @property
-    def list_database_operations(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseOperationsRequest],
-        spanner_database_admin.ListDatabaseOperationsResponse,
-    ]:
-        r"""Return a callable for the list database operations method over gRPC.
-
-        Lists database
-        [longrunning-operations][google.longrunning.Operation]. A
-        database operation has a name of the form
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations.
-
-        Returns:
-            Callable[[~.ListDatabaseOperationsRequest],
-                    ~.ListDatabaseOperationsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_database_operations" not in self._stubs:
-            self._stubs["list_database_operations"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabaseOperations",
-                request_serializer=spanner_database_admin.ListDatabaseOperationsRequest.serialize,
-                response_deserializer=spanner_database_admin.ListDatabaseOperationsResponse.deserialize,
-            )
-        return self._stubs["list_database_operations"]
-
-    @property
-    def list_backup_operations(
-        self,
-    ) -> Callable[
-        [backup.ListBackupOperationsRequest], backup.ListBackupOperationsResponse
-    ]:
-        r"""Return a callable for the list backup operations method over gRPC.
-
-        Lists the backup [long-running
-        operations][google.longrunning.Operation] in the given instance.
-        A backup operation has a name of the form
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.progress.start_time`` in descending
-        order starting from the most recently started operation.
-
-        Returns:
-            Callable[[~.ListBackupOperationsRequest],
-                    ~.ListBackupOperationsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_backup_operations" not in self._stubs:
-            self._stubs["list_backup_operations"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListBackupOperations",
-                request_serializer=backup.ListBackupOperationsRequest.serialize,
-                response_deserializer=backup.ListBackupOperationsResponse.deserialize,
-            )
-        return self._stubs["list_backup_operations"]
-
-    @property
-    def list_database_roles(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseRolesRequest],
-        spanner_database_admin.ListDatabaseRolesResponse,
-    ]:
-        r"""Return a callable for the list database roles method over gRPC.
-
-        Lists Cloud Spanner database roles.
-
-        Returns:
-            Callable[[~.ListDatabaseRolesRequest],
-                    ~.ListDatabaseRolesResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_database_roles" not in self._stubs:
-            self._stubs["list_database_roles"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabaseRoles",
-                request_serializer=spanner_database_admin.ListDatabaseRolesRequest.serialize,
-                response_deserializer=spanner_database_admin.ListDatabaseRolesResponse.deserialize,
-            )
-        return self._stubs["list_database_roles"]
-
-    @property
-    def add_split_points(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.AddSplitPointsRequest],
-        spanner_database_admin.AddSplitPointsResponse,
-    ]:
-        r"""Return a callable for the add split points method over gRPC.
-
-        Adds split points to specified tables, indexes of a
-        database.
-
-        Returns:
-            Callable[[~.AddSplitPointsRequest],
-                    ~.AddSplitPointsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "add_split_points" not in self._stubs:
-            self._stubs["add_split_points"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/AddSplitPoints",
-                request_serializer=spanner_database_admin.AddSplitPointsRequest.serialize,
-                response_deserializer=spanner_database_admin.AddSplitPointsResponse.deserialize,
-            )
-        return self._stubs["add_split_points"]
-
-    @property
-    def create_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.CreateBackupScheduleRequest],
-        gsad_backup_schedule.BackupSchedule,
-    ]:
-        r"""Return a callable for the create backup schedule method over gRPC.
-
-        Creates a new backup schedule.
-
-        Returns:
-            Callable[[~.CreateBackupScheduleRequest],
-                    ~.BackupSchedule]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_backup_schedule" not in self._stubs:
-            self._stubs["create_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CreateBackupSchedule",
-                request_serializer=gsad_backup_schedule.CreateBackupScheduleRequest.serialize,
-                response_deserializer=gsad_backup_schedule.BackupSchedule.deserialize,
-            )
-        return self._stubs["create_backup_schedule"]
-
-    @property
-    def get_backup_schedule(
-        self,
-    ) -> Callable[
-        [backup_schedule.GetBackupScheduleRequest], backup_schedule.BackupSchedule
-    ]:
-        r"""Return a callable for the get backup schedule method over gRPC.
-
-        Gets backup schedule for the input schedule name.
-
-        Returns:
-            Callable[[~.GetBackupScheduleRequest],
-                    ~.BackupSchedule]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_backup_schedule" not in self._stubs:
-            self._stubs["get_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetBackupSchedule",
-                request_serializer=backup_schedule.GetBackupScheduleRequest.serialize,
-                response_deserializer=backup_schedule.BackupSchedule.deserialize,
-            )
-        return self._stubs["get_backup_schedule"]
-
-    @property
-    def update_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.UpdateBackupScheduleRequest],
-        gsad_backup_schedule.BackupSchedule,
-    ]:
-        r"""Return a callable for the update backup schedule method over gRPC.
-
-        Updates a backup schedule.
-
-        Returns:
-            Callable[[~.UpdateBackupScheduleRequest],
-                    ~.BackupSchedule]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_backup_schedule" not in self._stubs:
-            self._stubs["update_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateBackupSchedule",
-                request_serializer=gsad_backup_schedule.UpdateBackupScheduleRequest.serialize,
-                response_deserializer=gsad_backup_schedule.BackupSchedule.deserialize,
-            )
-        return self._stubs["update_backup_schedule"]
-
-    @property
-    def delete_backup_schedule(
-        self,
-    ) -> Callable[[backup_schedule.DeleteBackupScheduleRequest], empty_pb2.Empty]:
-        r"""Return a callable for the delete backup schedule method over gRPC.
-
-        Deletes a backup schedule.
-
-        Returns:
-            Callable[[~.DeleteBackupScheduleRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_backup_schedule" not in self._stubs:
-            self._stubs["delete_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/DeleteBackupSchedule",
-                request_serializer=backup_schedule.DeleteBackupScheduleRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_backup_schedule"]
-
-    @property
-    def list_backup_schedules(
-        self,
-    ) -> Callable[
-        [backup_schedule.ListBackupSchedulesRequest],
-        backup_schedule.ListBackupSchedulesResponse,
-    ]:
-        r"""Return a callable for the list backup schedules method over gRPC.
-
-        Lists all the backup schedules for the database.
-
-        Returns:
-            Callable[[~.ListBackupSchedulesRequest],
-                    ~.ListBackupSchedulesResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_backup_schedules" not in self._stubs:
-            self._stubs["list_backup_schedules"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListBackupSchedules",
-                request_serializer=backup_schedule.ListBackupSchedulesRequest.serialize,
-                response_deserializer=backup_schedule.ListBackupSchedulesResponse.deserialize,
-            )
-        return self._stubs["list_backup_schedules"]
-
-    @property
-    def internal_update_graph_operation(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.InternalUpdateGraphOperationRequest],
-        spanner_database_admin.InternalUpdateGraphOperationResponse,
-    ]:
-        r"""Return a callable for the internal update graph
-        operation method over gRPC.
-
-        This is an internal API called by Spanner Graph jobs.
-        You should never need to call this API directly.
-
-        Returns:
-            Callable[[~.InternalUpdateGraphOperationRequest],
-                    ~.InternalUpdateGraphOperationResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "internal_update_graph_operation" not in self._stubs:
-            self._stubs[
-                "internal_update_graph_operation"
-            ] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/InternalUpdateGraphOperation",
-                request_serializer=spanner_database_admin.InternalUpdateGraphOperationRequest.serialize,
-                response_deserializer=spanner_database_admin.InternalUpdateGraphOperationResponse.deserialize,
-            )
-        return self._stubs["internal_update_graph_operation"]
-
-    def close(self):
-        self._logged_channel.close()
-
-    @property
-    def delete_operation(
-        self,
-    ) -> Callable[[operations_pb2.DeleteOperationRequest], None]:
-        r"""Return a callable for the delete_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_operation" not in self._stubs:
-            self._stubs["delete_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/DeleteOperation",
-                request_serializer=operations_pb2.DeleteOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["delete_operation"]
-
-    @property
-    def cancel_operation(
-        self,
-    ) -> Callable[[operations_pb2.CancelOperationRequest], None]:
-        r"""Return a callable for the cancel_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "cancel_operation" not in self._stubs:
-            self._stubs["cancel_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/CancelOperation",
-                request_serializer=operations_pb2.CancelOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["cancel_operation"]
-
-    @property
-    def get_operation(
-        self,
-    ) -> Callable[[operations_pb2.GetOperationRequest], operations_pb2.Operation]:
-        r"""Return a callable for the get_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_operation" not in self._stubs:
-            self._stubs["get_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/GetOperation",
-                request_serializer=operations_pb2.GetOperationRequest.SerializeToString,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["get_operation"]
-
-    @property
-    def list_operations(
-        self,
-    ) -> Callable[
-        [operations_pb2.ListOperationsRequest], operations_pb2.ListOperationsResponse
-    ]:
-        r"""Return a callable for the list_operations method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_operations" not in self._stubs:
-            self._stubs["list_operations"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/ListOperations",
-                request_serializer=operations_pb2.ListOperationsRequest.SerializeToString,
-                response_deserializer=operations_pb2.ListOperationsResponse.FromString,
-            )
-        return self._stubs["list_operations"]
-
-    @property
-    def kind(self) -> str:
-        return "grpc"
-
-
-__all__ = ("DatabaseAdminGrpcTransport",)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py
deleted file mode 100644
index c0b020e355..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/grpc_asyncio.py
+++ /dev/null
@@ -1,1727 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import inspect
-import json
-import logging as std_logging
-import pickle
-from typing import Awaitable, Callable, Dict, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1, grpc_helpers_async, operations_v1
-from google.api_core import retry_async as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf.json_format import MessageToJson
-import google.protobuf.message
-import grpc  # type: ignore
-from grpc.experimental import aio  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-from google.cloud.spanner_admin_database_v1.types import spanner_database_admin
-
-from .base import DEFAULT_CLIENT_INFO, DatabaseAdminTransport
-from .grpc import DatabaseAdminGrpcTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class _LoggingClientAIOInterceptor(
-    grpc.aio.UnaryUnaryClientInterceptor
-):  # pragma: NO COVER
-    async def intercept_unary_unary(self, continuation, client_call_details, request):
-        logging_enabled = CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        )
-        if logging_enabled:  # pragma: NO COVER
-            request_metadata = client_call_details.metadata
-            if isinstance(request, proto.Message):
-                request_payload = type(request).to_json(request)
-            elif isinstance(request, google.protobuf.message.Message):
-                request_payload = MessageToJson(request)
-            else:
-                request_payload = f"{type(request).__name__}: {pickle.dumps(request)}"
-
-            request_metadata = {
-                key: value.decode("utf-8") if isinstance(value, bytes) else value
-                for key, value in request_metadata
-            }
-            grpc_request = {
-                "payload": request_payload,
-                "requestMethod": "grpc",
-                "metadata": dict(request_metadata),
-            }
-            _LOGGER.debug(
-                f"Sending request for {client_call_details.method}",
-                extra={
-                    "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                    "rpcName": str(client_call_details.method),
-                    "request": grpc_request,
-                    "metadata": grpc_request["metadata"],
-                },
-            )
-        response = await continuation(client_call_details, request)
-        if logging_enabled:  # pragma: NO COVER
-            response_metadata = await response.trailing_metadata()
-            # Convert gRPC metadata `<class 'grpc.aio._metadata.Metadata'>` to list of tuples
-            metadata = (
-                dict([(k, str(v)) for k, v in response_metadata])
-                if response_metadata
-                else None
-            )
-            result = await response
-            if isinstance(result, proto.Message):
-                response_payload = type(result).to_json(result)
-            elif isinstance(result, google.protobuf.message.Message):
-                response_payload = MessageToJson(result)
-            else:
-                response_payload = f"{type(result).__name__}: {pickle.dumps(result)}"
-            grpc_response = {
-                "payload": response_payload,
-                "metadata": metadata,
-                "status": "OK",
-            }
-            _LOGGER.debug(
-                f"Received response to rpc {client_call_details.method}.",
-                extra={
-                    "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                    "rpcName": str(client_call_details.method),
-                    "response": grpc_response,
-                    "metadata": grpc_response["metadata"],
-                },
-            )
-        return response
-
-
-class DatabaseAdminGrpcAsyncIOTransport(DatabaseAdminTransport):
-    """gRPC AsyncIO backend transport for DatabaseAdmin.
-
-    Cloud Spanner Database Admin API
-
-    The Cloud Spanner Database Admin API can be used to:
-
-    - create, drop, and list databases
-    - update the schema of pre-existing databases
-    - create, delete, copy and list backups for a database
-    - restore a database from an existing backup
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends protocol buffers over the wire using gRPC (which is built on
-    top of HTTP/2); the ``grpcio`` package must be installed.
-    """
-
-    _grpc_channel: aio.Channel
-    _stubs: Dict[str, Callable] = {}
-
-    @classmethod
-    def create_channel(
-        cls,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        **kwargs,
-    ) -> aio.Channel:
-        """Create and return a gRPC AsyncIO channel object.
-        Args:
-            host (Optional[str]): The host for the channel to use.
-            credentials (Optional[~.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify this application to the service. If
-                none are specified, the client will attempt to ascertain
-                the credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            kwargs (Optional[dict]): Keyword arguments, which are passed to the
-                channel creation.
-        Returns:
-            aio.Channel: A gRPC AsyncIO channel object.
-        """
-
-        return grpc_helpers_async.create_channel(
-            host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            quota_project_id=quota_project_id,
-            default_scopes=cls.AUTH_SCOPES,
-            scopes=scopes,
-            default_host=cls.DEFAULT_HOST,
-            **kwargs,
-        )
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        channel: Optional[Union[aio.Channel, Callable[..., aio.Channel]]] = None,
-        api_mtls_endpoint: Optional[str] = None,
-        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-                This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if a ``channel`` instance is provided.
-                This argument will be removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            channel (Optional[Union[aio.Channel, Callable[..., aio.Channel]]]):
-                A ``Channel`` instance through which to make calls, or a Callable
-                that constructs and returns one. If set to None, ``self.create_channel``
-                is used to create the channel. If a Callable is given, it will be called
-                with the same arguments as used in ``self.create_channel``.
-            api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
-                If provided, it overrides the ``host`` argument and tries to create
-                a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or application default SSL credentials.
-            client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                Deprecated. A callback to provide client SSL certificate bytes and
-                private key bytes, both in PEM format. It is ignored if
-                ``api_mtls_endpoint`` is None.
-            ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for the grpc channel. It is ignored if a ``channel`` instance is provided.
-            client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure a mutual TLS channel. It is
-                ignored if a ``channel`` instance or ``ssl_channel_credentials`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-
-        Raises:
-            google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
-              creation failed for any reason.
-          google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-        self._grpc_channel = None
-        self._ssl_channel_credentials = ssl_channel_credentials
-        self._stubs: Dict[str, Callable] = {}
-        self._operations_client: Optional[operations_v1.OperationsAsyncClient] = None
-
-        if api_mtls_endpoint:
-            warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
-        if client_cert_source:
-            warnings.warn("client_cert_source is deprecated", DeprecationWarning)
-
-        if isinstance(channel, aio.Channel):
-            # Ignore credentials if a channel was passed.
-            credentials = None
-            self._ignore_credentials = True
-            # If a channel was explicitly provided, set it.
-            self._grpc_channel = channel
-            self._ssl_channel_credentials = None
-        else:
-            if api_mtls_endpoint:
-                host = api_mtls_endpoint
-
-                # Create SSL credentials with client_cert_source or application
-                # default SSL credentials.
-                if client_cert_source:
-                    cert, key = client_cert_source()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-                else:
-                    self._ssl_channel_credentials = SslCredentials().ssl_credentials
-
-            else:
-                if client_cert_source_for_mtls and not ssl_channel_credentials:
-                    cert, key = client_cert_source_for_mtls()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-
-        # The base transport sets the host, credentials and scopes
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            scopes=scopes,
-            quota_project_id=quota_project_id,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-        if not self._grpc_channel:
-            # initialize with the provided callable or the default channel
-            channel_init = channel or type(self).create_channel
-            self._grpc_channel = channel_init(
-                self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                # Set ``credentials_file`` to ``None`` here as
-                # the credentials that we saved earlier should be used.
-                credentials_file=None,
-                scopes=self._scopes,
-                ssl_credentials=self._ssl_channel_credentials,
-                quota_project_id=quota_project_id,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-
-        self._interceptor = _LoggingClientAIOInterceptor()
-        self._grpc_channel._unary_unary_interceptors.append(self._interceptor)
-        self._logged_channel = self._grpc_channel
-        self._wrap_with_kind = (
-            "kind" in inspect.signature(gapic_v1.method_async.wrap_method).parameters
-        )
-        # Wrap messages. This must be done after self._logged_channel exists
-        self._prep_wrapped_messages(client_info)
-
-    @property
-    def grpc_channel(self) -> aio.Channel:
-        """Create the channel designed to connect to this service.
-
-        This property caches on the instance; repeated calls return
-        the same channel.
-        """
-        # Return the channel from cache.
-        return self._grpc_channel
-
-    @property
-    def operations_client(self) -> operations_v1.OperationsAsyncClient:
-        """Create the client designed to process long-running operations.
-
-        This property caches on the instance; repeated calls return the same
-        client.
-        """
-        # Quick check: Only create a new client if we do not already have one.
-        if self._operations_client is None:
-            self._operations_client = operations_v1.OperationsAsyncClient(
-                self._logged_channel
-            )
-
-        # Return the client from cache.
-        return self._operations_client
-
-    @property
-    def list_databases(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabasesRequest],
-        Awaitable[spanner_database_admin.ListDatabasesResponse],
-    ]:
-        r"""Return a callable for the list databases method over gRPC.
-
-        Lists Cloud Spanner databases.
-
-        Returns:
-            Callable[[~.ListDatabasesRequest],
-                    Awaitable[~.ListDatabasesResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_databases" not in self._stubs:
-            self._stubs["list_databases"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabases",
-                request_serializer=spanner_database_admin.ListDatabasesRequest.serialize,
-                response_deserializer=spanner_database_admin.ListDatabasesResponse.deserialize,
-            )
-        return self._stubs["list_databases"]
-
-    @property
-    def create_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.CreateDatabaseRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the create database method over gRPC.
-
-        Creates a new Cloud Spanner database and starts to prepare it
-        for serving. The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format ``<database_name>/operations/<operation_id>`` and can be
-        used to track preparation of the database. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateDatabaseMetadata][google.spanner.admin.database.v1.CreateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        Returns:
-            Callable[[~.CreateDatabaseRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_database" not in self._stubs:
-            self._stubs["create_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CreateDatabase",
-                request_serializer=spanner_database_admin.CreateDatabaseRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_database"]
-
-    @property
-    def get_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseRequest],
-        Awaitable[spanner_database_admin.Database],
-    ]:
-        r"""Return a callable for the get database method over gRPC.
-
-        Gets the state of a Cloud Spanner database.
-
-        Returns:
-            Callable[[~.GetDatabaseRequest],
-                    Awaitable[~.Database]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_database" not in self._stubs:
-            self._stubs["get_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetDatabase",
-                request_serializer=spanner_database_admin.GetDatabaseRequest.serialize,
-                response_deserializer=spanner_database_admin.Database.deserialize,
-            )
-        return self._stubs["get_database"]
-
-    @property
-    def update_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the update database method over gRPC.
-
-        Updates a Cloud Spanner database. The returned [long-running
-        operation][google.longrunning.Operation] can be used to track
-        the progress of updating the database. If the named database
-        does not exist, returns ``NOT_FOUND``.
-
-        While the operation is pending:
-
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field is set to true.
-        - Cancelling the operation is best-effort. If the cancellation
-          succeeds, the operation metadata's
-          [cancel_time][google.spanner.admin.database.v1.UpdateDatabaseMetadata.cancel_time]
-          is set, the updates are reverted, and the operation terminates
-          with a ``CANCELLED`` status.
-        - New UpdateDatabase requests will return a
-          ``FAILED_PRECONDITION`` error until the pending operation is
-          done (returns successfully or with error).
-        - Reading the database via the API continues to give the
-          pre-request values.
-
-        Upon completion of the returned operation:
-
-        - The new values are in effect and readable via the API.
-        - The database's
-          [reconciling][google.spanner.admin.database.v1.Database.reconciling]
-          field becomes false.
-
-        The returned [long-running
-        operation][google.longrunning.Operation] will have a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``
-        and can be used to track the database modification. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseMetadata][google.spanner.admin.database.v1.UpdateDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Database][google.spanner.admin.database.v1.Database], if
-        successful.
-
-        Returns:
-            Callable[[~.UpdateDatabaseRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_database" not in self._stubs:
-            self._stubs["update_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateDatabase",
-                request_serializer=spanner_database_admin.UpdateDatabaseRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_database"]
-
-    @property
-    def update_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseDdlRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the update database ddl method over gRPC.
-
-        Updates the schema of a Cloud Spanner database by
-        creating/altering/dropping tables, columns, indexes, etc. The
-        returned [long-running operation][google.longrunning.Operation]
-        will have a name of the format
-        ``<database_name>/operations/<operation_id>`` and can be used to
-        track execution of the schema change(s). The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [UpdateDatabaseDdlMetadata][google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata].
-        The operation has no response.
-
-        Returns:
-            Callable[[~.UpdateDatabaseDdlRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_database_ddl" not in self._stubs:
-            self._stubs["update_database_ddl"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateDatabaseDdl",
-                request_serializer=spanner_database_admin.UpdateDatabaseDdlRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_database_ddl"]
-
-    @property
-    def drop_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.DropDatabaseRequest], Awaitable[empty_pb2.Empty]
-    ]:
-        r"""Return a callable for the drop database method over gRPC.
-
-        Drops (aka deletes) a Cloud Spanner database. Completed backups
-        for the database will be retained according to their
-        ``expire_time``. Note: Cloud Spanner might continue to accept
-        requests for a few seconds after the database has been deleted.
-
-        Returns:
-            Callable[[~.DropDatabaseRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "drop_database" not in self._stubs:
-            self._stubs["drop_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/DropDatabase",
-                request_serializer=spanner_database_admin.DropDatabaseRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["drop_database"]
-
-    @property
-    def get_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseDdlRequest],
-        Awaitable[spanner_database_admin.GetDatabaseDdlResponse],
-    ]:
-        r"""Return a callable for the get database ddl method over gRPC.
-
-        Returns the schema of a Cloud Spanner database as a list of
-        formatted DDL statements. This method does not show pending
-        schema updates, those may be queried using the
-        [Operations][google.longrunning.Operations] API.
-
-        Returns:
-            Callable[[~.GetDatabaseDdlRequest],
-                    Awaitable[~.GetDatabaseDdlResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_database_ddl" not in self._stubs:
-            self._stubs["get_database_ddl"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetDatabaseDdl",
-                request_serializer=spanner_database_admin.GetDatabaseDdlRequest.serialize,
-                response_deserializer=spanner_database_admin.GetDatabaseDdlResponse.deserialize,
-            )
-        return self._stubs["get_database_ddl"]
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], Awaitable[policy_pb2.Policy]]:
-        r"""Return a callable for the set iam policy method over gRPC.
-
-        Sets the access control policy on a database or backup resource.
-        Replaces any existing policy.
-
-        Authorization requires ``spanner.databases.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.setIamPolicy``
-        permission on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.SetIamPolicyRequest],
-                    Awaitable[~.Policy]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "set_iam_policy" not in self._stubs:
-            self._stubs["set_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/SetIamPolicy",
-                request_serializer=iam_policy_pb2.SetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["set_iam_policy"]
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], Awaitable[policy_pb2.Policy]]:
-        r"""Return a callable for the get iam policy method over gRPC.
-
-        Gets the access control policy for a database or backup
-        resource. Returns an empty policy if a database or backup exists
-        but does not have a policy set.
-
-        Authorization requires ``spanner.databases.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource]. For
-        backups, authorization requires ``spanner.backups.getIamPolicy``
-        permission on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.GetIamPolicyRequest],
-                    Awaitable[~.Policy]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_iam_policy" not in self._stubs:
-            self._stubs["get_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetIamPolicy",
-                request_serializer=iam_policy_pb2.GetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["get_iam_policy"]
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        Awaitable[iam_policy_pb2.TestIamPermissionsResponse],
-    ]:
-        r"""Return a callable for the test iam permissions method over gRPC.
-
-        Returns permissions that the caller has on the specified
-        database or backup resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner database
-        will result in a NOT_FOUND error if the user has
-        ``spanner.databases.list`` permission on the containing Cloud
-        Spanner instance. Otherwise returns an empty set of permissions.
-        Calling this method on a backup that does not exist will result
-        in a NOT_FOUND error if the user has ``spanner.backups.list``
-        permission on the containing instance.
-
-        Returns:
-            Callable[[~.TestIamPermissionsRequest],
-                    Awaitable[~.TestIamPermissionsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "test_iam_permissions" not in self._stubs:
-            self._stubs["test_iam_permissions"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/TestIamPermissions",
-                request_serializer=iam_policy_pb2.TestIamPermissionsRequest.SerializeToString,
-                response_deserializer=iam_policy_pb2.TestIamPermissionsResponse.FromString,
-            )
-        return self._stubs["test_iam_permissions"]
-
-    @property
-    def create_backup(
-        self,
-    ) -> Callable[
-        [gsad_backup.CreateBackupRequest], Awaitable[operations_pb2.Operation]
-    ]:
-        r"""Return a callable for the create backup method over gRPC.
-
-        Starts creating a new Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track creation of the backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        creation and delete the backup. There can be only one pending
-        backup creation per database. Backup creation of different
-        databases can run concurrently.
-
-        Returns:
-            Callable[[~.CreateBackupRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_backup" not in self._stubs:
-            self._stubs["create_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CreateBackup",
-                request_serializer=gsad_backup.CreateBackupRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_backup"]
-
-    @property
-    def copy_backup(
-        self,
-    ) -> Callable[[backup.CopyBackupRequest], Awaitable[operations_pb2.Operation]]:
-        r"""Return a callable for the copy backup method over gRPC.
-
-        Starts copying a Cloud Spanner Backup. The returned backup
-        [long-running operation][google.longrunning.Operation] will have
-        a name of the format
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>``
-        and can be used to track copying of the backup. The operation is
-        associated with the destination backup. The
-        [metadata][google.longrunning.Operation.metadata] field type is
-        [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
-        The [response][google.longrunning.Operation.response] field type
-        is [Backup][google.spanner.admin.database.v1.Backup], if
-        successful. Cancelling the returned operation will stop the
-        copying and delete the destination backup. Concurrent CopyBackup
-        requests can run on the same source backup.
-
-        Returns:
-            Callable[[~.CopyBackupRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "copy_backup" not in self._stubs:
-            self._stubs["copy_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CopyBackup",
-                request_serializer=backup.CopyBackupRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["copy_backup"]
-
-    @property
-    def get_backup(
-        self,
-    ) -> Callable[[backup.GetBackupRequest], Awaitable[backup.Backup]]:
-        r"""Return a callable for the get backup method over gRPC.
-
-        Gets metadata on a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        Returns:
-            Callable[[~.GetBackupRequest],
-                    Awaitable[~.Backup]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_backup" not in self._stubs:
-            self._stubs["get_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetBackup",
-                request_serializer=backup.GetBackupRequest.serialize,
-                response_deserializer=backup.Backup.deserialize,
-            )
-        return self._stubs["get_backup"]
-
-    @property
-    def update_backup(
-        self,
-    ) -> Callable[[gsad_backup.UpdateBackupRequest], Awaitable[gsad_backup.Backup]]:
-        r"""Return a callable for the update backup method over gRPC.
-
-        Updates a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        Returns:
-            Callable[[~.UpdateBackupRequest],
-                    Awaitable[~.Backup]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_backup" not in self._stubs:
-            self._stubs["update_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateBackup",
-                request_serializer=gsad_backup.UpdateBackupRequest.serialize,
-                response_deserializer=gsad_backup.Backup.deserialize,
-            )
-        return self._stubs["update_backup"]
-
-    @property
-    def delete_backup(
-        self,
-    ) -> Callable[[backup.DeleteBackupRequest], Awaitable[empty_pb2.Empty]]:
-        r"""Return a callable for the delete backup method over gRPC.
-
-        Deletes a pending or completed
-        [Backup][google.spanner.admin.database.v1.Backup].
-
-        Returns:
-            Callable[[~.DeleteBackupRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_backup" not in self._stubs:
-            self._stubs["delete_backup"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/DeleteBackup",
-                request_serializer=backup.DeleteBackupRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_backup"]
-
-    @property
-    def list_backups(
-        self,
-    ) -> Callable[[backup.ListBackupsRequest], Awaitable[backup.ListBackupsResponse]]:
-        r"""Return a callable for the list backups method over gRPC.
-
-        Lists completed and pending backups. Backups returned are
-        ordered by ``create_time`` in descending order, starting from
-        the most recent ``create_time``.
-
-        Returns:
-            Callable[[~.ListBackupsRequest],
-                    Awaitable[~.ListBackupsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_backups" not in self._stubs:
-            self._stubs["list_backups"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListBackups",
-                request_serializer=backup.ListBackupsRequest.serialize,
-                response_deserializer=backup.ListBackupsResponse.deserialize,
-            )
-        return self._stubs["list_backups"]
-
-    @property
-    def restore_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.RestoreDatabaseRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the restore database method over gRPC.
-
-        Create a new database by restoring from a completed backup. The
-        new database must be in the same project and in an instance with
-        the same instance configuration as the instance containing the
-        backup. The returned database [long-running
-        operation][google.longrunning.Operation] has a name of the
-        format
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>``,
-        and can be used to track the progress of the operation, and to
-        cancel it. The [metadata][google.longrunning.Operation.metadata]
-        field type is
-        [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata].
-        The [response][google.longrunning.Operation.response] type is
-        [Database][google.spanner.admin.database.v1.Database], if
-        successful. Cancelling the returned operation will stop the
-        restore and delete the database. There can be only one database
-        being restored into an instance at a time. Once the restore
-        operation completes, a new restore operation can be initiated,
-        without waiting for the optimize operation associated with the
-        first restore to complete.
-
-        Returns:
-            Callable[[~.RestoreDatabaseRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "restore_database" not in self._stubs:
-            self._stubs["restore_database"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/RestoreDatabase",
-                request_serializer=spanner_database_admin.RestoreDatabaseRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["restore_database"]
-
-    @property
-    def list_database_operations(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseOperationsRequest],
-        Awaitable[spanner_database_admin.ListDatabaseOperationsResponse],
-    ]:
-        r"""Return a callable for the list database operations method over gRPC.
-
-        Lists database
-        [longrunning-operations][google.longrunning.Operation]. A
-        database operation has a name of the form
-        ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations.
-
-        Returns:
-            Callable[[~.ListDatabaseOperationsRequest],
-                    Awaitable[~.ListDatabaseOperationsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_database_operations" not in self._stubs:
-            self._stubs["list_database_operations"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabaseOperations",
-                request_serializer=spanner_database_admin.ListDatabaseOperationsRequest.serialize,
-                response_deserializer=spanner_database_admin.ListDatabaseOperationsResponse.deserialize,
-            )
-        return self._stubs["list_database_operations"]
-
-    @property
-    def list_backup_operations(
-        self,
-    ) -> Callable[
-        [backup.ListBackupOperationsRequest],
-        Awaitable[backup.ListBackupOperationsResponse],
-    ]:
-        r"""Return a callable for the list backup operations method over gRPC.
-
-        Lists the backup [long-running
-        operations][google.longrunning.Operation] in the given instance.
-        A backup operation has a name of the form
-        ``projects/<project>/instances/<instance>/backups/<backup>/operations/<operation>``.
-        The long-running operation
-        [metadata][google.longrunning.Operation.metadata] field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.progress.start_time`` in descending
-        order starting from the most recently started operation.
-
-        Returns:
-            Callable[[~.ListBackupOperationsRequest],
-                    Awaitable[~.ListBackupOperationsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_backup_operations" not in self._stubs:
-            self._stubs["list_backup_operations"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListBackupOperations",
-                request_serializer=backup.ListBackupOperationsRequest.serialize,
-                response_deserializer=backup.ListBackupOperationsResponse.deserialize,
-            )
-        return self._stubs["list_backup_operations"]
-
-    @property
-    def list_database_roles(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseRolesRequest],
-        Awaitable[spanner_database_admin.ListDatabaseRolesResponse],
-    ]:
-        r"""Return a callable for the list database roles method over gRPC.
-
-        Lists Cloud Spanner database roles.
-
-        Returns:
-            Callable[[~.ListDatabaseRolesRequest],
-                    Awaitable[~.ListDatabaseRolesResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_database_roles" not in self._stubs:
-            self._stubs["list_database_roles"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListDatabaseRoles",
-                request_serializer=spanner_database_admin.ListDatabaseRolesRequest.serialize,
-                response_deserializer=spanner_database_admin.ListDatabaseRolesResponse.deserialize,
-            )
-        return self._stubs["list_database_roles"]
-
-    @property
-    def add_split_points(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.AddSplitPointsRequest],
-        Awaitable[spanner_database_admin.AddSplitPointsResponse],
-    ]:
-        r"""Return a callable for the add split points method over gRPC.
-
-        Adds split points to specified tables, indexes of a
-        database.
-
-        Returns:
-            Callable[[~.AddSplitPointsRequest],
-                    Awaitable[~.AddSplitPointsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "add_split_points" not in self._stubs:
-            self._stubs["add_split_points"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/AddSplitPoints",
-                request_serializer=spanner_database_admin.AddSplitPointsRequest.serialize,
-                response_deserializer=spanner_database_admin.AddSplitPointsResponse.deserialize,
-            )
-        return self._stubs["add_split_points"]
-
-    @property
-    def create_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.CreateBackupScheduleRequest],
-        Awaitable[gsad_backup_schedule.BackupSchedule],
-    ]:
-        r"""Return a callable for the create backup schedule method over gRPC.
-
-        Creates a new backup schedule.
-
-        Returns:
-            Callable[[~.CreateBackupScheduleRequest],
-                    Awaitable[~.BackupSchedule]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_backup_schedule" not in self._stubs:
-            self._stubs["create_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/CreateBackupSchedule",
-                request_serializer=gsad_backup_schedule.CreateBackupScheduleRequest.serialize,
-                response_deserializer=gsad_backup_schedule.BackupSchedule.deserialize,
-            )
-        return self._stubs["create_backup_schedule"]
-
-    @property
-    def get_backup_schedule(
-        self,
-    ) -> Callable[
-        [backup_schedule.GetBackupScheduleRequest],
-        Awaitable[backup_schedule.BackupSchedule],
-    ]:
-        r"""Return a callable for the get backup schedule method over gRPC.
-
-        Gets backup schedule for the input schedule name.
-
-        Returns:
-            Callable[[~.GetBackupScheduleRequest],
-                    Awaitable[~.BackupSchedule]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_backup_schedule" not in self._stubs:
-            self._stubs["get_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/GetBackupSchedule",
-                request_serializer=backup_schedule.GetBackupScheduleRequest.serialize,
-                response_deserializer=backup_schedule.BackupSchedule.deserialize,
-            )
-        return self._stubs["get_backup_schedule"]
-
-    @property
-    def update_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.UpdateBackupScheduleRequest],
-        Awaitable[gsad_backup_schedule.BackupSchedule],
-    ]:
-        r"""Return a callable for the update backup schedule method over gRPC.
-
-        Updates a backup schedule.
-
-        Returns:
-            Callable[[~.UpdateBackupScheduleRequest],
-                    Awaitable[~.BackupSchedule]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_backup_schedule" not in self._stubs:
-            self._stubs["update_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/UpdateBackupSchedule",
-                request_serializer=gsad_backup_schedule.UpdateBackupScheduleRequest.serialize,
-                response_deserializer=gsad_backup_schedule.BackupSchedule.deserialize,
-            )
-        return self._stubs["update_backup_schedule"]
-
-    @property
-    def delete_backup_schedule(
-        self,
-    ) -> Callable[
-        [backup_schedule.DeleteBackupScheduleRequest], Awaitable[empty_pb2.Empty]
-    ]:
-        r"""Return a callable for the delete backup schedule method over gRPC.
-
-        Deletes a backup schedule.
-
-        Returns:
-            Callable[[~.DeleteBackupScheduleRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_backup_schedule" not in self._stubs:
-            self._stubs["delete_backup_schedule"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/DeleteBackupSchedule",
-                request_serializer=backup_schedule.DeleteBackupScheduleRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_backup_schedule"]
-
-    @property
-    def list_backup_schedules(
-        self,
-    ) -> Callable[
-        [backup_schedule.ListBackupSchedulesRequest],
-        Awaitable[backup_schedule.ListBackupSchedulesResponse],
-    ]:
-        r"""Return a callable for the list backup schedules method over gRPC.
-
-        Lists all the backup schedules for the database.
-
-        Returns:
-            Callable[[~.ListBackupSchedulesRequest],
-                    Awaitable[~.ListBackupSchedulesResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_backup_schedules" not in self._stubs:
-            self._stubs["list_backup_schedules"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/ListBackupSchedules",
-                request_serializer=backup_schedule.ListBackupSchedulesRequest.serialize,
-                response_deserializer=backup_schedule.ListBackupSchedulesResponse.deserialize,
-            )
-        return self._stubs["list_backup_schedules"]
-
-    @property
-    def internal_update_graph_operation(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.InternalUpdateGraphOperationRequest],
-        Awaitable[spanner_database_admin.InternalUpdateGraphOperationResponse],
-    ]:
-        r"""Return a callable for the internal update graph
-        operation method over gRPC.
-
-        This is an internal API called by Spanner Graph jobs.
-        You should never need to call this API directly.
-
-        Returns:
-            Callable[[~.InternalUpdateGraphOperationRequest],
-                    Awaitable[~.InternalUpdateGraphOperationResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "internal_update_graph_operation" not in self._stubs:
-            self._stubs[
-                "internal_update_graph_operation"
-            ] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.database.v1.DatabaseAdmin/InternalUpdateGraphOperation",
-                request_serializer=spanner_database_admin.InternalUpdateGraphOperationRequest.serialize,
-                response_deserializer=spanner_database_admin.InternalUpdateGraphOperationResponse.deserialize,
-            )
-        return self._stubs["internal_update_graph_operation"]
-
-    def _prep_wrapped_messages(self, client_info):
-        """Precompute the wrapped methods, overriding the base class method to use async wrappers."""
-        self._wrapped_methods = {
-            self.list_databases: self._wrap_method(
-                self.list_databases,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_database: self._wrap_method(
-                self.create_database,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_database: self._wrap_method(
-                self.get_database,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_database: self._wrap_method(
-                self.update_database,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_database_ddl: self._wrap_method(
-                self.update_database_ddl,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.drop_database: self._wrap_method(
-                self.drop_database,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_database_ddl: self._wrap_method(
-                self.get_database_ddl,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.set_iam_policy: self._wrap_method(
-                self.set_iam_policy,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.get_iam_policy: self._wrap_method(
-                self.get_iam_policy,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.test_iam_permissions: self._wrap_method(
-                self.test_iam_permissions,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.create_backup: self._wrap_method(
-                self.create_backup,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.copy_backup: self._wrap_method(
-                self.copy_backup,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_backup: self._wrap_method(
-                self.get_backup,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_backup: self._wrap_method(
-                self.update_backup,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_backup: self._wrap_method(
-                self.delete_backup,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_backups: self._wrap_method(
-                self.list_backups,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.restore_database: self._wrap_method(
-                self.restore_database,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_database_operations: self._wrap_method(
-                self.list_database_operations,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_backup_operations: self._wrap_method(
-                self.list_backup_operations,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_database_roles: self._wrap_method(
-                self.list_database_roles,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.add_split_points: self._wrap_method(
-                self.add_split_points,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_backup_schedule: self._wrap_method(
-                self.create_backup_schedule,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_backup_schedule: self._wrap_method(
-                self.get_backup_schedule,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_backup_schedule: self._wrap_method(
-                self.update_backup_schedule,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_backup_schedule: self._wrap_method(
-                self.delete_backup_schedule,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_backup_schedules: self._wrap_method(
-                self.list_backup_schedules,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.internal_update_graph_operation: self._wrap_method(
-                self.internal_update_graph_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.cancel_operation: self._wrap_method(
-                self.cancel_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_operation: self._wrap_method(
-                self.delete_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.get_operation: self._wrap_method(
-                self.get_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_operations: self._wrap_method(
-                self.list_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-        }
-
-    def _wrap_method(self, func, *args, **kwargs):
-        if self._wrap_with_kind:  # pragma: NO COVER
-            kwargs["kind"] = self.kind
-        return gapic_v1.method_async.wrap_method(func, *args, **kwargs)
-
-    def close(self):
-        return self._logged_channel.close()
-
-    @property
-    def kind(self) -> str:
-        return "grpc_asyncio"
-
-    @property
-    def delete_operation(
-        self,
-    ) -> Callable[[operations_pb2.DeleteOperationRequest], None]:
-        r"""Return a callable for the delete_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_operation" not in self._stubs:
-            self._stubs["delete_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/DeleteOperation",
-                request_serializer=operations_pb2.DeleteOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["delete_operation"]
-
-    @property
-    def cancel_operation(
-        self,
-    ) -> Callable[[operations_pb2.CancelOperationRequest], None]:
-        r"""Return a callable for the cancel_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "cancel_operation" not in self._stubs:
-            self._stubs["cancel_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/CancelOperation",
-                request_serializer=operations_pb2.CancelOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["cancel_operation"]
-
-    @property
-    def get_operation(
-        self,
-    ) -> Callable[[operations_pb2.GetOperationRequest], operations_pb2.Operation]:
-        r"""Return a callable for the get_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_operation" not in self._stubs:
-            self._stubs["get_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/GetOperation",
-                request_serializer=operations_pb2.GetOperationRequest.SerializeToString,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["get_operation"]
-
-    @property
-    def list_operations(
-        self,
-    ) -> Callable[
-        [operations_pb2.ListOperationsRequest], operations_pb2.ListOperationsResponse
-    ]:
-        r"""Return a callable for the list_operations method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_operations" not in self._stubs:
-            self._stubs["list_operations"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/ListOperations",
-                request_serializer=operations_pb2.ListOperationsRequest.SerializeToString,
-                response_deserializer=operations_pb2.ListOperationsResponse.FromString,
-            )
-        return self._stubs["list_operations"]
-
-
-__all__ = ("DatabaseAdminGrpcAsyncIOTransport",)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest.py
deleted file mode 100644
index b4e5250b8c..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest.py
+++ /dev/null
@@ -1,6544 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import dataclasses
-import json  # type: ignore
-import logging
-from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import gapic_v1, operations_v1, rest_helpers, rest_streaming
-from google.api_core import exceptions as core_exceptions
-from google.api_core import retry as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.requests import AuthorizedSession  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-import google.protobuf
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import json_format
-from requests import __version__ as requests_version
-
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-from google.cloud.spanner_admin_database_v1.types import spanner_database_admin
-
-from .base import DEFAULT_CLIENT_INFO as BASE_DEFAULT_CLIENT_INFO
-from .rest_base import _BaseDatabaseAdminRestTransport
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = logging.getLogger(__name__)
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=BASE_DEFAULT_CLIENT_INFO.gapic_version,
-    grpc_version=None,
-    rest_version=f"requests@{requests_version}",
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-class DatabaseAdminRestInterceptor:
-    """Interceptor for DatabaseAdmin.
-
-    Interceptors are used to manipulate requests, request metadata, and responses
-    in arbitrary ways.
-    Example use cases include:
-    * Logging
-    * Verifying requests according to service or custom semantics
-    * Stripping extraneous information from responses
-
-    These use cases and more can be enabled by injecting an
-    instance of a custom subclass when constructing the DatabaseAdminRestTransport.
-
-    .. code-block:: python
-        class MyCustomDatabaseAdminInterceptor(DatabaseAdminRestInterceptor):
-            def pre_add_split_points(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_add_split_points(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_copy_backup(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_copy_backup(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_create_backup(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_create_backup(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_create_backup_schedule(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_create_backup_schedule(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_create_database(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_create_database(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_delete_backup(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_delete_backup_schedule(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_drop_database(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_get_backup(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_backup(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_backup_schedule(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_backup_schedule(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_database(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_database(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_database_ddl(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_database_ddl(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_iam_policy(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_iam_policy(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_internal_update_graph_operation(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_internal_update_graph_operation(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_backup_operations(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_backup_operations(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_backups(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_backups(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_backup_schedules(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_backup_schedules(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_database_operations(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_database_operations(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_database_roles(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_database_roles(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_databases(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_databases(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_restore_database(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_restore_database(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_set_iam_policy(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_set_iam_policy(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_test_iam_permissions(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_test_iam_permissions(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_update_backup(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_update_backup(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_update_backup_schedule(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_update_backup_schedule(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_update_database(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_update_database(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_update_database_ddl(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_update_database_ddl(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-        transport = DatabaseAdminRestTransport(interceptor=MyCustomDatabaseAdminInterceptor())
-        client = DatabaseAdminClient(transport=transport)
-
-
-    """
-
-    def pre_add_split_points(
-        self,
-        request: spanner_database_admin.AddSplitPointsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.AddSplitPointsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for add_split_points
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_add_split_points(
-        self, response: spanner_database_admin.AddSplitPointsResponse
-    ) -> spanner_database_admin.AddSplitPointsResponse:
-        """Post-rpc interceptor for add_split_points
-
-        DEPRECATED. Please use the `post_add_split_points_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_add_split_points` interceptor runs
-        before the `post_add_split_points_with_metadata` interceptor.
-        """
-        return response
-
-    def post_add_split_points_with_metadata(
-        self,
-        response: spanner_database_admin.AddSplitPointsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.AddSplitPointsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for add_split_points
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_add_split_points_with_metadata`
-        interceptor in new development instead of the `post_add_split_points` interceptor.
-        When both interceptors are used, this `post_add_split_points_with_metadata` interceptor runs after the
-        `post_add_split_points` interceptor. The (possibly modified) response returned by
-        `post_add_split_points` will be passed to
-        `post_add_split_points_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_copy_backup(
-        self,
-        request: backup.CopyBackupRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[backup.CopyBackupRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for copy_backup
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_copy_backup(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for copy_backup
-
-        DEPRECATED. Please use the `post_copy_backup_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_copy_backup` interceptor runs
-        before the `post_copy_backup_with_metadata` interceptor.
-        """
-        return response
-
-    def post_copy_backup_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for copy_backup
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_copy_backup_with_metadata`
-        interceptor in new development instead of the `post_copy_backup` interceptor.
-        When both interceptors are used, this `post_copy_backup_with_metadata` interceptor runs after the
-        `post_copy_backup` interceptor. The (possibly modified) response returned by
-        `post_copy_backup` will be passed to
-        `post_copy_backup_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_create_backup(
-        self,
-        request: gsad_backup.CreateBackupRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        gsad_backup.CreateBackupRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for create_backup
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_create_backup(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for create_backup
-
-        DEPRECATED. Please use the `post_create_backup_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_create_backup` interceptor runs
-        before the `post_create_backup_with_metadata` interceptor.
-        """
-        return response
-
-    def post_create_backup_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for create_backup
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_create_backup_with_metadata`
-        interceptor in new development instead of the `post_create_backup` interceptor.
-        When both interceptors are used, this `post_create_backup_with_metadata` interceptor runs after the
-        `post_create_backup` interceptor. The (possibly modified) response returned by
-        `post_create_backup` will be passed to
-        `post_create_backup_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_create_backup_schedule(
-        self,
-        request: gsad_backup_schedule.CreateBackupScheduleRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        gsad_backup_schedule.CreateBackupScheduleRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for create_backup_schedule
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_create_backup_schedule(
-        self, response: gsad_backup_schedule.BackupSchedule
-    ) -> gsad_backup_schedule.BackupSchedule:
-        """Post-rpc interceptor for create_backup_schedule
-
-        DEPRECATED. Please use the `post_create_backup_schedule_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_create_backup_schedule` interceptor runs
-        before the `post_create_backup_schedule_with_metadata` interceptor.
-        """
-        return response
-
-    def post_create_backup_schedule_with_metadata(
-        self,
-        response: gsad_backup_schedule.BackupSchedule,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        gsad_backup_schedule.BackupSchedule, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for create_backup_schedule
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_create_backup_schedule_with_metadata`
-        interceptor in new development instead of the `post_create_backup_schedule` interceptor.
-        When both interceptors are used, this `post_create_backup_schedule_with_metadata` interceptor runs after the
-        `post_create_backup_schedule` interceptor. The (possibly modified) response returned by
-        `post_create_backup_schedule` will be passed to
-        `post_create_backup_schedule_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_create_database(
-        self,
-        request: spanner_database_admin.CreateDatabaseRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.CreateDatabaseRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for create_database
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_create_database(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for create_database
-
-        DEPRECATED. Please use the `post_create_database_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_create_database` interceptor runs
-        before the `post_create_database_with_metadata` interceptor.
-        """
-        return response
-
-    def post_create_database_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for create_database
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_create_database_with_metadata`
-        interceptor in new development instead of the `post_create_database` interceptor.
-        When both interceptors are used, this `post_create_database_with_metadata` interceptor runs after the
-        `post_create_database` interceptor. The (possibly modified) response returned by
-        `post_create_database` will be passed to
-        `post_create_database_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_delete_backup(
-        self,
-        request: backup.DeleteBackupRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[backup.DeleteBackupRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for delete_backup
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def pre_delete_backup_schedule(
-        self,
-        request: backup_schedule.DeleteBackupScheduleRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        backup_schedule.DeleteBackupScheduleRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for delete_backup_schedule
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def pre_drop_database(
-        self,
-        request: spanner_database_admin.DropDatabaseRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.DropDatabaseRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for drop_database
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def pre_get_backup(
-        self,
-        request: backup.GetBackupRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[backup.GetBackupRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for get_backup
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_get_backup(self, response: backup.Backup) -> backup.Backup:
-        """Post-rpc interceptor for get_backup
-
-        DEPRECATED. Please use the `post_get_backup_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_get_backup` interceptor runs
-        before the `post_get_backup_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_backup_with_metadata(
-        self, response: backup.Backup, metadata: Sequence[Tuple[str, Union[str, bytes]]]
-    ) -> Tuple[backup.Backup, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for get_backup
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_backup_with_metadata`
-        interceptor in new development instead of the `post_get_backup` interceptor.
-        When both interceptors are used, this `post_get_backup_with_metadata` interceptor runs after the
-        `post_get_backup` interceptor. The (possibly modified) response returned by
-        `post_get_backup` will be passed to
-        `post_get_backup_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_backup_schedule(
-        self,
-        request: backup_schedule.GetBackupScheduleRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        backup_schedule.GetBackupScheduleRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for get_backup_schedule
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_get_backup_schedule(
-        self, response: backup_schedule.BackupSchedule
-    ) -> backup_schedule.BackupSchedule:
-        """Post-rpc interceptor for get_backup_schedule
-
-        DEPRECATED. Please use the `post_get_backup_schedule_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_get_backup_schedule` interceptor runs
-        before the `post_get_backup_schedule_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_backup_schedule_with_metadata(
-        self,
-        response: backup_schedule.BackupSchedule,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[backup_schedule.BackupSchedule, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for get_backup_schedule
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_backup_schedule_with_metadata`
-        interceptor in new development instead of the `post_get_backup_schedule` interceptor.
-        When both interceptors are used, this `post_get_backup_schedule_with_metadata` interceptor runs after the
-        `post_get_backup_schedule` interceptor. The (possibly modified) response returned by
-        `post_get_backup_schedule` will be passed to
-        `post_get_backup_schedule_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_database(
-        self,
-        request: spanner_database_admin.GetDatabaseRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.GetDatabaseRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for get_database
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_get_database(
-        self, response: spanner_database_admin.Database
-    ) -> spanner_database_admin.Database:
-        """Post-rpc interceptor for get_database
-
-        DEPRECATED. Please use the `post_get_database_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_get_database` interceptor runs
-        before the `post_get_database_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_database_with_metadata(
-        self,
-        response: spanner_database_admin.Database,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.Database, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for get_database
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_database_with_metadata`
-        interceptor in new development instead of the `post_get_database` interceptor.
-        When both interceptors are used, this `post_get_database_with_metadata` interceptor runs after the
-        `post_get_database` interceptor. The (possibly modified) response returned by
-        `post_get_database` will be passed to
-        `post_get_database_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_database_ddl(
-        self,
-        request: spanner_database_admin.GetDatabaseDdlRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.GetDatabaseDdlRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for get_database_ddl
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_get_database_ddl(
-        self, response: spanner_database_admin.GetDatabaseDdlResponse
-    ) -> spanner_database_admin.GetDatabaseDdlResponse:
-        """Post-rpc interceptor for get_database_ddl
-
-        DEPRECATED. Please use the `post_get_database_ddl_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_get_database_ddl` interceptor runs
-        before the `post_get_database_ddl_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_database_ddl_with_metadata(
-        self,
-        response: spanner_database_admin.GetDatabaseDdlResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.GetDatabaseDdlResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for get_database_ddl
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_database_ddl_with_metadata`
-        interceptor in new development instead of the `post_get_database_ddl` interceptor.
-        When both interceptors are used, this `post_get_database_ddl_with_metadata` interceptor runs after the
-        `post_get_database_ddl` interceptor. The (possibly modified) response returned by
-        `post_get_database_ddl` will be passed to
-        `post_get_database_ddl_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_iam_policy(
-        self,
-        request: iam_policy_pb2.GetIamPolicyRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.GetIamPolicyRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for get_iam_policy
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_get_iam_policy(self, response: policy_pb2.Policy) -> policy_pb2.Policy:
-        """Post-rpc interceptor for get_iam_policy
-
-        DEPRECATED. Please use the `post_get_iam_policy_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_get_iam_policy` interceptor runs
-        before the `post_get_iam_policy_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_iam_policy_with_metadata(
-        self,
-        response: policy_pb2.Policy,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[policy_pb2.Policy, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for get_iam_policy
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_iam_policy_with_metadata`
-        interceptor in new development instead of the `post_get_iam_policy` interceptor.
-        When both interceptors are used, this `post_get_iam_policy_with_metadata` interceptor runs after the
-        `post_get_iam_policy` interceptor. The (possibly modified) response returned by
-        `post_get_iam_policy` will be passed to
-        `post_get_iam_policy_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_backup_operations(
-        self,
-        request: backup.ListBackupOperationsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        backup.ListBackupOperationsRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for list_backup_operations
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_list_backup_operations(
-        self, response: backup.ListBackupOperationsResponse
-    ) -> backup.ListBackupOperationsResponse:
-        """Post-rpc interceptor for list_backup_operations
-
-        DEPRECATED. Please use the `post_list_backup_operations_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_list_backup_operations` interceptor runs
-        before the `post_list_backup_operations_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_backup_operations_with_metadata(
-        self,
-        response: backup.ListBackupOperationsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        backup.ListBackupOperationsResponse, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for list_backup_operations
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_backup_operations_with_metadata`
-        interceptor in new development instead of the `post_list_backup_operations` interceptor.
-        When both interceptors are used, this `post_list_backup_operations_with_metadata` interceptor runs after the
-        `post_list_backup_operations` interceptor. The (possibly modified) response returned by
-        `post_list_backup_operations` will be passed to
-        `post_list_backup_operations_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_backups(
-        self,
-        request: backup.ListBackupsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[backup.ListBackupsRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for list_backups
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_list_backups(
-        self, response: backup.ListBackupsResponse
-    ) -> backup.ListBackupsResponse:
-        """Post-rpc interceptor for list_backups
-
-        DEPRECATED. Please use the `post_list_backups_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_list_backups` interceptor runs
-        before the `post_list_backups_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_backups_with_metadata(
-        self,
-        response: backup.ListBackupsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[backup.ListBackupsResponse, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for list_backups
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_backups_with_metadata`
-        interceptor in new development instead of the `post_list_backups` interceptor.
-        When both interceptors are used, this `post_list_backups_with_metadata` interceptor runs after the
-        `post_list_backups` interceptor. The (possibly modified) response returned by
-        `post_list_backups` will be passed to
-        `post_list_backups_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_backup_schedules(
-        self,
-        request: backup_schedule.ListBackupSchedulesRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        backup_schedule.ListBackupSchedulesRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_backup_schedules
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_list_backup_schedules(
-        self, response: backup_schedule.ListBackupSchedulesResponse
-    ) -> backup_schedule.ListBackupSchedulesResponse:
-        """Post-rpc interceptor for list_backup_schedules
-
-        DEPRECATED. Please use the `post_list_backup_schedules_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_list_backup_schedules` interceptor runs
-        before the `post_list_backup_schedules_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_backup_schedules_with_metadata(
-        self,
-        response: backup_schedule.ListBackupSchedulesResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        backup_schedule.ListBackupSchedulesResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_backup_schedules
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_backup_schedules_with_metadata`
-        interceptor in new development instead of the `post_list_backup_schedules` interceptor.
-        When both interceptors are used, this `post_list_backup_schedules_with_metadata` interceptor runs after the
-        `post_list_backup_schedules` interceptor. The (possibly modified) response returned by
-        `post_list_backup_schedules` will be passed to
-        `post_list_backup_schedules_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_database_operations(
-        self,
-        request: spanner_database_admin.ListDatabaseOperationsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.ListDatabaseOperationsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_database_operations
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_list_database_operations(
-        self, response: spanner_database_admin.ListDatabaseOperationsResponse
-    ) -> spanner_database_admin.ListDatabaseOperationsResponse:
-        """Post-rpc interceptor for list_database_operations
-
-        DEPRECATED. Please use the `post_list_database_operations_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_list_database_operations` interceptor runs
-        before the `post_list_database_operations_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_database_operations_with_metadata(
-        self,
-        response: spanner_database_admin.ListDatabaseOperationsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.ListDatabaseOperationsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_database_operations
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_database_operations_with_metadata`
-        interceptor in new development instead of the `post_list_database_operations` interceptor.
-        When both interceptors are used, this `post_list_database_operations_with_metadata` interceptor runs after the
-        `post_list_database_operations` interceptor. The (possibly modified) response returned by
-        `post_list_database_operations` will be passed to
-        `post_list_database_operations_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_database_roles(
-        self,
-        request: spanner_database_admin.ListDatabaseRolesRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.ListDatabaseRolesRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_database_roles
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_list_database_roles(
-        self, response: spanner_database_admin.ListDatabaseRolesResponse
-    ) -> spanner_database_admin.ListDatabaseRolesResponse:
-        """Post-rpc interceptor for list_database_roles
-
-        DEPRECATED. Please use the `post_list_database_roles_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_list_database_roles` interceptor runs
-        before the `post_list_database_roles_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_database_roles_with_metadata(
-        self,
-        response: spanner_database_admin.ListDatabaseRolesResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.ListDatabaseRolesResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_database_roles
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_database_roles_with_metadata`
-        interceptor in new development instead of the `post_list_database_roles` interceptor.
-        When both interceptors are used, this `post_list_database_roles_with_metadata` interceptor runs after the
-        `post_list_database_roles` interceptor. The (possibly modified) response returned by
-        `post_list_database_roles` will be passed to
-        `post_list_database_roles_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_databases(
-        self,
-        request: spanner_database_admin.ListDatabasesRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.ListDatabasesRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_databases
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_list_databases(
-        self, response: spanner_database_admin.ListDatabasesResponse
-    ) -> spanner_database_admin.ListDatabasesResponse:
-        """Post-rpc interceptor for list_databases
-
-        DEPRECATED. Please use the `post_list_databases_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_list_databases` interceptor runs
-        before the `post_list_databases_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_databases_with_metadata(
-        self,
-        response: spanner_database_admin.ListDatabasesResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.ListDatabasesResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_databases
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_databases_with_metadata`
-        interceptor in new development instead of the `post_list_databases` interceptor.
-        When both interceptors are used, this `post_list_databases_with_metadata` interceptor runs after the
-        `post_list_databases` interceptor. The (possibly modified) response returned by
-        `post_list_databases` will be passed to
-        `post_list_databases_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_restore_database(
-        self,
-        request: spanner_database_admin.RestoreDatabaseRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.RestoreDatabaseRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for restore_database
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_restore_database(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for restore_database
-
-        DEPRECATED. Please use the `post_restore_database_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_restore_database` interceptor runs
-        before the `post_restore_database_with_metadata` interceptor.
-        """
-        return response
-
-    def post_restore_database_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for restore_database
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_restore_database_with_metadata`
-        interceptor in new development instead of the `post_restore_database` interceptor.
-        When both interceptors are used, this `post_restore_database_with_metadata` interceptor runs after the
-        `post_restore_database` interceptor. The (possibly modified) response returned by
-        `post_restore_database` will be passed to
-        `post_restore_database_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_set_iam_policy(
-        self,
-        request: iam_policy_pb2.SetIamPolicyRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.SetIamPolicyRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for set_iam_policy
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_set_iam_policy(self, response: policy_pb2.Policy) -> policy_pb2.Policy:
-        """Post-rpc interceptor for set_iam_policy
-
-        DEPRECATED. Please use the `post_set_iam_policy_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_set_iam_policy` interceptor runs
-        before the `post_set_iam_policy_with_metadata` interceptor.
-        """
-        return response
-
-    def post_set_iam_policy_with_metadata(
-        self,
-        response: policy_pb2.Policy,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[policy_pb2.Policy, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for set_iam_policy
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_set_iam_policy_with_metadata`
-        interceptor in new development instead of the `post_set_iam_policy` interceptor.
-        When both interceptors are used, this `post_set_iam_policy_with_metadata` interceptor runs after the
-        `post_set_iam_policy` interceptor. The (possibly modified) response returned by
-        `post_set_iam_policy` will be passed to
-        `post_set_iam_policy_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_test_iam_permissions(
-        self,
-        request: iam_policy_pb2.TestIamPermissionsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.TestIamPermissionsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for test_iam_permissions
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_test_iam_permissions(
-        self, response: iam_policy_pb2.TestIamPermissionsResponse
-    ) -> iam_policy_pb2.TestIamPermissionsResponse:
-        """Post-rpc interceptor for test_iam_permissions
-
-        DEPRECATED. Please use the `post_test_iam_permissions_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_test_iam_permissions` interceptor runs
-        before the `post_test_iam_permissions_with_metadata` interceptor.
-        """
-        return response
-
-    def post_test_iam_permissions_with_metadata(
-        self,
-        response: iam_policy_pb2.TestIamPermissionsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.TestIamPermissionsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for test_iam_permissions
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_test_iam_permissions_with_metadata`
-        interceptor in new development instead of the `post_test_iam_permissions` interceptor.
-        When both interceptors are used, this `post_test_iam_permissions_with_metadata` interceptor runs after the
-        `post_test_iam_permissions` interceptor. The (possibly modified) response returned by
-        `post_test_iam_permissions` will be passed to
-        `post_test_iam_permissions_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_update_backup(
-        self,
-        request: gsad_backup.UpdateBackupRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        gsad_backup.UpdateBackupRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for update_backup
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_update_backup(self, response: gsad_backup.Backup) -> gsad_backup.Backup:
-        """Post-rpc interceptor for update_backup
-
-        DEPRECATED. Please use the `post_update_backup_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_update_backup` interceptor runs
-        before the `post_update_backup_with_metadata` interceptor.
-        """
-        return response
-
-    def post_update_backup_with_metadata(
-        self,
-        response: gsad_backup.Backup,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[gsad_backup.Backup, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for update_backup
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_update_backup_with_metadata`
-        interceptor in new development instead of the `post_update_backup` interceptor.
-        When both interceptors are used, this `post_update_backup_with_metadata` interceptor runs after the
-        `post_update_backup` interceptor. The (possibly modified) response returned by
-        `post_update_backup` will be passed to
-        `post_update_backup_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_update_backup_schedule(
-        self,
-        request: gsad_backup_schedule.UpdateBackupScheduleRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        gsad_backup_schedule.UpdateBackupScheduleRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for update_backup_schedule
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_update_backup_schedule(
-        self, response: gsad_backup_schedule.BackupSchedule
-    ) -> gsad_backup_schedule.BackupSchedule:
-        """Post-rpc interceptor for update_backup_schedule
-
-        DEPRECATED. Please use the `post_update_backup_schedule_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_update_backup_schedule` interceptor runs
-        before the `post_update_backup_schedule_with_metadata` interceptor.
-        """
-        return response
-
-    def post_update_backup_schedule_with_metadata(
-        self,
-        response: gsad_backup_schedule.BackupSchedule,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        gsad_backup_schedule.BackupSchedule, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for update_backup_schedule
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_update_backup_schedule_with_metadata`
-        interceptor in new development instead of the `post_update_backup_schedule` interceptor.
-        When both interceptors are used, this `post_update_backup_schedule_with_metadata` interceptor runs after the
-        `post_update_backup_schedule` interceptor. The (possibly modified) response returned by
-        `post_update_backup_schedule` will be passed to
-        `post_update_backup_schedule_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_update_database(
-        self,
-        request: spanner_database_admin.UpdateDatabaseRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.UpdateDatabaseRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for update_database
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_update_database(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for update_database
-
-        DEPRECATED. Please use the `post_update_database_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_update_database` interceptor runs
-        before the `post_update_database_with_metadata` interceptor.
-        """
-        return response
-
-    def post_update_database_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for update_database
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_update_database_with_metadata`
-        interceptor in new development instead of the `post_update_database` interceptor.
-        When both interceptors are used, this `post_update_database_with_metadata` interceptor runs after the
-        `post_update_database` interceptor. The (possibly modified) response returned by
-        `post_update_database` will be passed to
-        `post_update_database_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_update_database_ddl(
-        self,
-        request: spanner_database_admin.UpdateDatabaseDdlRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_database_admin.UpdateDatabaseDdlRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for update_database_ddl
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_update_database_ddl(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for update_database_ddl
-
-        DEPRECATED. Please use the `post_update_database_ddl_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code. This `post_update_database_ddl` interceptor runs
-        before the `post_update_database_ddl_with_metadata` interceptor.
-        """
-        return response
-
-    def post_update_database_ddl_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for update_database_ddl
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the DatabaseAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_update_database_ddl_with_metadata`
-        interceptor in new development instead of the `post_update_database_ddl` interceptor.
-        When both interceptors are used, this `post_update_database_ddl_with_metadata` interceptor runs after the
-        `post_update_database_ddl` interceptor. The (possibly modified) response returned by
-        `post_update_database_ddl` will be passed to
-        `post_update_database_ddl_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_cancel_operation(
-        self,
-        request: operations_pb2.CancelOperationRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.CancelOperationRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for cancel_operation
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_cancel_operation(self, response: None) -> None:
-        """Post-rpc interceptor for cancel_operation
-
-        Override in a subclass to manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-    def pre_delete_operation(
-        self,
-        request: operations_pb2.DeleteOperationRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.DeleteOperationRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for delete_operation
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_delete_operation(self, response: None) -> None:
-        """Post-rpc interceptor for delete_operation
-
-        Override in a subclass to manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-    def pre_get_operation(
-        self,
-        request: operations_pb2.GetOperationRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.GetOperationRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for get_operation
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_get_operation(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for get_operation
-
-        Override in a subclass to manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-    def pre_list_operations(
-        self,
-        request: operations_pb2.ListOperationsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.ListOperationsRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for list_operations
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the DatabaseAdmin server.
-        """
-        return request, metadata
-
-    def post_list_operations(
-        self, response: operations_pb2.ListOperationsResponse
-    ) -> operations_pb2.ListOperationsResponse:
-        """Post-rpc interceptor for list_operations
-
-        Override in a subclass to manipulate the response
-        after it is returned by the DatabaseAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-
-@dataclasses.dataclass
-class DatabaseAdminRestStub:
-    _session: AuthorizedSession
-    _host: str
-    _interceptor: DatabaseAdminRestInterceptor
-
-
-class DatabaseAdminRestTransport(_BaseDatabaseAdminRestTransport):
-    """REST backend synchronous transport for DatabaseAdmin.
-
-    Cloud Spanner Database Admin API
-
-    The Cloud Spanner Database Admin API can be used to:
-
-    - create, drop, and list databases
-    - update the schema of pre-existing databases
-    - create, delete, copy and list backups for a database
-    - restore a database from an existing backup
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends JSON representations of protocol buffers over HTTP/1.1
-    """
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        url_scheme: str = "https",
-        interceptor: Optional[DatabaseAdminRestInterceptor] = None,
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if ``channel`` is provided. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional(Sequence[str])): A list of scopes. This argument is
-                ignored if ``channel`` is provided.
-            client_cert_source_for_mtls (Callable[[], Tuple[bytes, bytes]]): Client
-                certificate to configure mutual TLS HTTP channel. It is ignored
-                if ``channel`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you are developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-            url_scheme: the protocol scheme for the API endpoint.  Normally
-                "https", but for testing or local servers,
-                "http" can be specified.
-        """
-        # Run the base constructor
-        # TODO(yon-mg): resolve other ctor params i.e. scopes, quota, etc.
-        # TODO: When custom host (api_endpoint) is set, `scopes` must *also* be set on the
-        # credentials object
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            url_scheme=url_scheme,
-            api_audience=api_audience,
-        )
-        self._session = AuthorizedSession(
-            self._credentials, default_host=self.DEFAULT_HOST
-        )
-        self._operations_client: Optional[operations_v1.AbstractOperationsClient] = None
-        if client_cert_source_for_mtls:
-            self._session.configure_mtls_channel(client_cert_source_for_mtls)
-        self._interceptor = interceptor or DatabaseAdminRestInterceptor()
-        self._prep_wrapped_messages(client_info)
-
-    @property
-    def operations_client(self) -> operations_v1.AbstractOperationsClient:
-        """Create the client designed to process long-running operations.
-
-        This property caches on the instance; repeated calls return the same
-        client.
-        """
-        # Only create a new client if we do not already have one.
-        if self._operations_client is None:
-            http_options: Dict[str, List[Dict[str, str]]] = {
-                "google.longrunning.Operations.CancelOperation": [
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instances/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}:cancel",
-                    },
-                ],
-                "google.longrunning.Operations.DeleteOperation": [
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                    },
-                ],
-                "google.longrunning.Operations.GetOperation": [
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                    },
-                ],
-                "google.longrunning.Operations.ListOperations": [
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations}",
-                    },
-                ],
-            }
-
-            rest_transport = operations_v1.OperationsRestTransport(
-                host=self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                scopes=self._scopes,
-                http_options=http_options,
-                path_prefix="v1",
-            )
-
-            self._operations_client = operations_v1.AbstractOperationsClient(
-                transport=rest_transport
-            )
-
-        # Return the client from cache.
-        return self._operations_client
-
-    class _AddSplitPoints(
-        _BaseDatabaseAdminRestTransport._BaseAddSplitPoints, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.AddSplitPoints")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.AddSplitPointsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_database_admin.AddSplitPointsResponse:
-            r"""Call the add split points method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.AddSplitPointsRequest):
-                    The request object. The request for
-                [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_database_admin.AddSplitPointsResponse:
-                    The response for
-                [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseAddSplitPoints._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_add_split_points(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseAddSplitPoints._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseAddSplitPoints._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseAddSplitPoints._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.AddSplitPoints",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "AddSplitPoints",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._AddSplitPoints._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_database_admin.AddSplitPointsResponse()
-            pb_resp = spanner_database_admin.AddSplitPointsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_add_split_points(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_add_split_points_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_database_admin.AddSplitPointsResponse.to_json(response)
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.add_split_points",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "AddSplitPoints",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _CopyBackup(
-        _BaseDatabaseAdminRestTransport._BaseCopyBackup, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.CopyBackup")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup.CopyBackupRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the copy backup method over HTTP.
-
-            Args:
-                request (~.backup.CopyBackupRequest):
-                    The request object. The request for
-                [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseCopyBackup._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_copy_backup(request, metadata)
-            transcoded_request = (
-                _BaseDatabaseAdminRestTransport._BaseCopyBackup._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = (
-                _BaseDatabaseAdminRestTransport._BaseCopyBackup._get_request_body_json(
-                    transcoded_request
-                )
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseDatabaseAdminRestTransport._BaseCopyBackup._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.CopyBackup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CopyBackup",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._CopyBackup._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_copy_backup(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_copy_backup_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.copy_backup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CopyBackup",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _CreateBackup(
-        _BaseDatabaseAdminRestTransport._BaseCreateBackup, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.CreateBackup")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: gsad_backup.CreateBackupRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the create backup method over HTTP.
-
-            Args:
-                request (~.gsad_backup.CreateBackupRequest):
-                    The request object. The request for
-                [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseCreateBackup._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_create_backup(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseCreateBackup._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseCreateBackup._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseCreateBackup._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.CreateBackup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CreateBackup",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._CreateBackup._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_create_backup(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_create_backup_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.create_backup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CreateBackup",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _CreateBackupSchedule(
-        _BaseDatabaseAdminRestTransport._BaseCreateBackupSchedule, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.CreateBackupSchedule")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: gsad_backup_schedule.CreateBackupScheduleRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> gsad_backup_schedule.BackupSchedule:
-            r"""Call the create backup schedule method over HTTP.
-
-            Args:
-                request (~.gsad_backup_schedule.CreateBackupScheduleRequest):
-                    The request object. The request for
-                [CreateBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackupSchedule].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.gsad_backup_schedule.BackupSchedule:
-                    BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseCreateBackupSchedule._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_create_backup_schedule(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseCreateBackupSchedule._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseCreateBackupSchedule._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseCreateBackupSchedule._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.CreateBackupSchedule",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CreateBackupSchedule",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._CreateBackupSchedule._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = gsad_backup_schedule.BackupSchedule()
-            pb_resp = gsad_backup_schedule.BackupSchedule.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_create_backup_schedule(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_create_backup_schedule_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = gsad_backup_schedule.BackupSchedule.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.create_backup_schedule",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CreateBackupSchedule",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _CreateDatabase(
-        _BaseDatabaseAdminRestTransport._BaseCreateDatabase, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.CreateDatabase")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.CreateDatabaseRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the create database method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.CreateDatabaseRequest):
-                    The request object. The request for
-                [CreateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.CreateDatabase].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseCreateDatabase._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_create_database(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseCreateDatabase._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseCreateDatabase._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseCreateDatabase._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.CreateDatabase",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CreateDatabase",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._CreateDatabase._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_create_database(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_create_database_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.create_database",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CreateDatabase",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _DeleteBackup(
-        _BaseDatabaseAdminRestTransport._BaseDeleteBackup, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.DeleteBackup")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup.DeleteBackupRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the delete backup method over HTTP.
-
-            Args:
-                request (~.backup.DeleteBackupRequest):
-                    The request object. The request for
-                [DeleteBackup][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackup].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseDeleteBackup._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_backup(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseDeleteBackup._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseDeleteBackup._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.DeleteBackup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "DeleteBackup",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._DeleteBackup._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _DeleteBackupSchedule(
-        _BaseDatabaseAdminRestTransport._BaseDeleteBackupSchedule, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.DeleteBackupSchedule")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup_schedule.DeleteBackupScheduleRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the delete backup schedule method over HTTP.
-
-            Args:
-                request (~.backup_schedule.DeleteBackupScheduleRequest):
-                    The request object. The request for
-                [DeleteBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackupSchedule].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseDeleteBackupSchedule._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_backup_schedule(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseDeleteBackupSchedule._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseDeleteBackupSchedule._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.DeleteBackupSchedule",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "DeleteBackupSchedule",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._DeleteBackupSchedule._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _DropDatabase(
-        _BaseDatabaseAdminRestTransport._BaseDropDatabase, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.DropDatabase")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.DropDatabaseRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the drop database method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.DropDatabaseRequest):
-                    The request object. The request for
-                [DropDatabase][google.spanner.admin.database.v1.DatabaseAdmin.DropDatabase].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseDropDatabase._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_drop_database(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseDropDatabase._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseDropDatabase._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.DropDatabase",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "DropDatabase",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._DropDatabase._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _GetBackup(
-        _BaseDatabaseAdminRestTransport._BaseGetBackup, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.GetBackup")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup.GetBackupRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> backup.Backup:
-            r"""Call the get backup method over HTTP.
-
-            Args:
-                request (~.backup.GetBackupRequest):
-                    The request object. The request for
-                [GetBackup][google.spanner.admin.database.v1.DatabaseAdmin.GetBackup].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.backup.Backup:
-                    A backup of a Cloud Spanner database.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseGetBackup._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_backup(request, metadata)
-            transcoded_request = (
-                _BaseDatabaseAdminRestTransport._BaseGetBackup._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseDatabaseAdminRestTransport._BaseGetBackup._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.GetBackup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetBackup",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._GetBackup._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = backup.Backup()
-            pb_resp = backup.Backup.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_backup(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_backup_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = backup.Backup.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.get_backup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetBackup",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetBackupSchedule(
-        _BaseDatabaseAdminRestTransport._BaseGetBackupSchedule, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.GetBackupSchedule")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup_schedule.GetBackupScheduleRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> backup_schedule.BackupSchedule:
-            r"""Call the get backup schedule method over HTTP.
-
-            Args:
-                request (~.backup_schedule.GetBackupScheduleRequest):
-                    The request object. The request for
-                [GetBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.GetBackupSchedule].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.backup_schedule.BackupSchedule:
-                    BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseGetBackupSchedule._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_backup_schedule(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseGetBackupSchedule._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseGetBackupSchedule._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.GetBackupSchedule",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetBackupSchedule",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._GetBackupSchedule._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = backup_schedule.BackupSchedule()
-            pb_resp = backup_schedule.BackupSchedule.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_backup_schedule(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_backup_schedule_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = backup_schedule.BackupSchedule.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.get_backup_schedule",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetBackupSchedule",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetDatabase(
-        _BaseDatabaseAdminRestTransport._BaseGetDatabase, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.GetDatabase")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.GetDatabaseRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_database_admin.Database:
-            r"""Call the get database method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.GetDatabaseRequest):
-                    The request object. The request for
-                [GetDatabase][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabase].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_database_admin.Database:
-                    A Cloud Spanner database.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseGetDatabase._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_database(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseGetDatabase._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseDatabaseAdminRestTransport._BaseGetDatabase._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.GetDatabase",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetDatabase",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._GetDatabase._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_database_admin.Database()
-            pb_resp = spanner_database_admin.Database.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_database(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_database_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner_database_admin.Database.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.get_database",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetDatabase",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetDatabaseDdl(
-        _BaseDatabaseAdminRestTransport._BaseGetDatabaseDdl, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.GetDatabaseDdl")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.GetDatabaseDdlRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_database_admin.GetDatabaseDdlResponse:
-            r"""Call the get database ddl method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.GetDatabaseDdlRequest):
-                    The request object. The request for
-                [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_database_admin.GetDatabaseDdlResponse:
-                    The response for
-                [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseGetDatabaseDdl._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_database_ddl(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseGetDatabaseDdl._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseGetDatabaseDdl._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.GetDatabaseDdl",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetDatabaseDdl",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._GetDatabaseDdl._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_database_admin.GetDatabaseDdlResponse()
-            pb_resp = spanner_database_admin.GetDatabaseDdlResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_database_ddl(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_database_ddl_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_database_admin.GetDatabaseDdlResponse.to_json(response)
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.get_database_ddl",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetDatabaseDdl",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetIamPolicy(
-        _BaseDatabaseAdminRestTransport._BaseGetIamPolicy, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.GetIamPolicy")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: iam_policy_pb2.GetIamPolicyRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> policy_pb2.Policy:
-            r"""Call the get iam policy method over HTTP.
-
-            Args:
-                request (~.iam_policy_pb2.GetIamPolicyRequest):
-                    The request object. Request message for ``GetIamPolicy`` method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.policy_pb2.Policy:
-                    An Identity and Access Management (IAM) policy, which
-                specifies access controls for Google Cloud resources.
-
-                A ``Policy`` is a collection of ``bindings``. A
-                ``binding`` binds one or more ``members``, or
-                principals, to a single ``role``. Principals can be user
-                accounts, service accounts, Google groups, and domains
-                (such as G Suite). A ``role`` is a named list of
-                permissions; each ``role`` can be an IAM predefined role
-                or a user-created custom role.
-
-                For some types of Google Cloud resources, a ``binding``
-                can also specify a ``condition``, which is a logical
-                expression that allows access to a resource only if the
-                expression evaluates to ``true``. A condition can add
-                constraints based on attributes of the request, the
-                resource, or both. To learn which resources support
-                conditions in their IAM policies, see the `IAM
-                documentation <https://cloud.google.com/iam/help/conditions/resource-policies>`__.
-
-                **JSON example:**
-
-                ::
-
-                       {
-                         "bindings": [
-                           {
-                             "role": "roles/resourcemanager.organizationAdmin",
-                             "members": [
-                               "user:mike@example.com",
-                               "group:admins@example.com",
-                               "domain:google.com",
-                               "serviceAccount:my-project-id@appspot.gserviceaccount.com"
-                             ]
-                           },
-                           {
-                             "role": "roles/resourcemanager.organizationViewer",
-                             "members": [
-                               "user:eve@example.com"
-                             ],
-                             "condition": {
-                               "title": "expirable access",
-                               "description": "Does not grant access after Sep 2020",
-                               "expression": "request.time <
-                               timestamp('2020-10-01T00:00:00.000Z')",
-                             }
-                           }
-                         ],
-                         "etag": "BwWWja0YfJA=",
-                         "version": 3
-                       }
-
-                **YAML example:**
-
-                ::
-
-                       bindings:
-                       - members:
-                         - user:mike@example.com
-                         - group:admins@example.com
-                         - domain:google.com
-                         - serviceAccount:my-project-id@appspot.gserviceaccount.com
-                         role: roles/resourcemanager.organizationAdmin
-                       - members:
-                         - user:eve@example.com
-                         role: roles/resourcemanager.organizationViewer
-                         condition:
-                           title: expirable access
-                           description: Does not grant access after Sep 2020
-                           expression: request.time < timestamp('2020-10-01T00:00:00.000Z')
-                       etag: BwWWja0YfJA=
-                       version: 3
-
-                For a description of IAM and its features, see the `IAM
-                documentation <https://cloud.google.com/iam/docs/>`__.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseGetIamPolicy._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_iam_policy(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseGetIamPolicy._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseGetIamPolicy._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseGetIamPolicy._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.GetIamPolicy",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetIamPolicy",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._GetIamPolicy._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = policy_pb2.Policy()
-            pb_resp = resp
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_iam_policy(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_iam_policy_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.get_iam_policy",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetIamPolicy",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _InternalUpdateGraphOperation(
-        _BaseDatabaseAdminRestTransport._BaseInternalUpdateGraphOperation,
-        DatabaseAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.InternalUpdateGraphOperation")
-
-        def __call__(
-            self,
-            request: spanner_database_admin.InternalUpdateGraphOperationRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_database_admin.InternalUpdateGraphOperationResponse:
-            raise NotImplementedError(
-                "Method InternalUpdateGraphOperation is not available over REST transport"
-            )
-
-    class _ListBackupOperations(
-        _BaseDatabaseAdminRestTransport._BaseListBackupOperations, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.ListBackupOperations")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup.ListBackupOperationsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> backup.ListBackupOperationsResponse:
-            r"""Call the list backup operations method over HTTP.
-
-            Args:
-                request (~.backup.ListBackupOperationsRequest):
-                    The request object. The request for
-                [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.backup.ListBackupOperationsResponse:
-                    The response for
-                [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseListBackupOperations._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_backup_operations(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseListBackupOperations._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseListBackupOperations._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.ListBackupOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListBackupOperations",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._ListBackupOperations._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = backup.ListBackupOperationsResponse()
-            pb_resp = backup.ListBackupOperationsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_backup_operations(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_backup_operations_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = backup.ListBackupOperationsResponse.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.list_backup_operations",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListBackupOperations",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListBackups(
-        _BaseDatabaseAdminRestTransport._BaseListBackups, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.ListBackups")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup.ListBackupsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> backup.ListBackupsResponse:
-            r"""Call the list backups method over HTTP.
-
-            Args:
-                request (~.backup.ListBackupsRequest):
-                    The request object. The request for
-                [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.backup.ListBackupsResponse:
-                    The response for
-                [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseListBackups._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_backups(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseListBackups._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseDatabaseAdminRestTransport._BaseListBackups._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.ListBackups",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListBackups",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._ListBackups._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = backup.ListBackupsResponse()
-            pb_resp = backup.ListBackupsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_backups(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_backups_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = backup.ListBackupsResponse.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.list_backups",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListBackups",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListBackupSchedules(
-        _BaseDatabaseAdminRestTransport._BaseListBackupSchedules, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.ListBackupSchedules")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: backup_schedule.ListBackupSchedulesRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> backup_schedule.ListBackupSchedulesResponse:
-            r"""Call the list backup schedules method over HTTP.
-
-            Args:
-                request (~.backup_schedule.ListBackupSchedulesRequest):
-                    The request object. The request for
-                [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.backup_schedule.ListBackupSchedulesResponse:
-                    The response for
-                [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseListBackupSchedules._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_backup_schedules(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseListBackupSchedules._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseListBackupSchedules._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.ListBackupSchedules",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListBackupSchedules",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._ListBackupSchedules._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = backup_schedule.ListBackupSchedulesResponse()
-            pb_resp = backup_schedule.ListBackupSchedulesResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_backup_schedules(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_backup_schedules_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        backup_schedule.ListBackupSchedulesResponse.to_json(response)
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.list_backup_schedules",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListBackupSchedules",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListDatabaseOperations(
-        _BaseDatabaseAdminRestTransport._BaseListDatabaseOperations,
-        DatabaseAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.ListDatabaseOperations")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.ListDatabaseOperationsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_database_admin.ListDatabaseOperationsResponse:
-            r"""Call the list database operations method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.ListDatabaseOperationsRequest):
-                    The request object. The request for
-                [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_database_admin.ListDatabaseOperationsResponse:
-                    The response for
-                [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseListDatabaseOperations._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_database_operations(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseListDatabaseOperations._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseListDatabaseOperations._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.ListDatabaseOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListDatabaseOperations",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._ListDatabaseOperations._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_database_admin.ListDatabaseOperationsResponse()
-            pb_resp = spanner_database_admin.ListDatabaseOperationsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_database_operations(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_database_operations_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_database_admin.ListDatabaseOperationsResponse.to_json(
-                            response
-                        )
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.list_database_operations",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListDatabaseOperations",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListDatabaseRoles(
-        _BaseDatabaseAdminRestTransport._BaseListDatabaseRoles, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.ListDatabaseRoles")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.ListDatabaseRolesRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_database_admin.ListDatabaseRolesResponse:
-            r"""Call the list database roles method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.ListDatabaseRolesRequest):
-                    The request object. The request for
-                [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_database_admin.ListDatabaseRolesResponse:
-                    The response for
-                [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseListDatabaseRoles._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_database_roles(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseListDatabaseRoles._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseListDatabaseRoles._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.ListDatabaseRoles",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListDatabaseRoles",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._ListDatabaseRoles._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_database_admin.ListDatabaseRolesResponse()
-            pb_resp = spanner_database_admin.ListDatabaseRolesResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_database_roles(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_database_roles_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_database_admin.ListDatabaseRolesResponse.to_json(
-                            response
-                        )
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.list_database_roles",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListDatabaseRoles",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListDatabases(
-        _BaseDatabaseAdminRestTransport._BaseListDatabases, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.ListDatabases")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.ListDatabasesRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_database_admin.ListDatabasesResponse:
-            r"""Call the list databases method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.ListDatabasesRequest):
-                    The request object. The request for
-                [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_database_admin.ListDatabasesResponse:
-                    The response for
-                [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseListDatabases._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_databases(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseListDatabases._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseListDatabases._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.ListDatabases",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListDatabases",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._ListDatabases._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_database_admin.ListDatabasesResponse()
-            pb_resp = spanner_database_admin.ListDatabasesResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_databases(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_databases_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_database_admin.ListDatabasesResponse.to_json(response)
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.list_databases",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListDatabases",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _RestoreDatabase(
-        _BaseDatabaseAdminRestTransport._BaseRestoreDatabase, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.RestoreDatabase")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.RestoreDatabaseRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the restore database method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.RestoreDatabaseRequest):
-                    The request object. The request for
-                [RestoreDatabase][google.spanner.admin.database.v1.DatabaseAdmin.RestoreDatabase].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseRestoreDatabase._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_restore_database(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseRestoreDatabase._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseRestoreDatabase._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseRestoreDatabase._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.RestoreDatabase",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "RestoreDatabase",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._RestoreDatabase._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_restore_database(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_restore_database_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.restore_database",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "RestoreDatabase",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _SetIamPolicy(
-        _BaseDatabaseAdminRestTransport._BaseSetIamPolicy, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.SetIamPolicy")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: iam_policy_pb2.SetIamPolicyRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> policy_pb2.Policy:
-            r"""Call the set iam policy method over HTTP.
-
-            Args:
-                request (~.iam_policy_pb2.SetIamPolicyRequest):
-                    The request object. Request message for ``SetIamPolicy`` method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.policy_pb2.Policy:
-                    An Identity and Access Management (IAM) policy, which
-                specifies access controls for Google Cloud resources.
-
-                A ``Policy`` is a collection of ``bindings``. A
-                ``binding`` binds one or more ``members``, or
-                principals, to a single ``role``. Principals can be user
-                accounts, service accounts, Google groups, and domains
-                (such as G Suite). A ``role`` is a named list of
-                permissions; each ``role`` can be an IAM predefined role
-                or a user-created custom role.
-
-                For some types of Google Cloud resources, a ``binding``
-                can also specify a ``condition``, which is a logical
-                expression that allows access to a resource only if the
-                expression evaluates to ``true``. A condition can add
-                constraints based on attributes of the request, the
-                resource, or both. To learn which resources support
-                conditions in their IAM policies, see the `IAM
-                documentation <https://cloud.google.com/iam/help/conditions/resource-policies>`__.
-
-                **JSON example:**
-
-                ::
-
-                       {
-                         "bindings": [
-                           {
-                             "role": "roles/resourcemanager.organizationAdmin",
-                             "members": [
-                               "user:mike@example.com",
-                               "group:admins@example.com",
-                               "domain:google.com",
-                               "serviceAccount:my-project-id@appspot.gserviceaccount.com"
-                             ]
-                           },
-                           {
-                             "role": "roles/resourcemanager.organizationViewer",
-                             "members": [
-                               "user:eve@example.com"
-                             ],
-                             "condition": {
-                               "title": "expirable access",
-                               "description": "Does not grant access after Sep 2020",
-                               "expression": "request.time <
-                               timestamp('2020-10-01T00:00:00.000Z')",
-                             }
-                           }
-                         ],
-                         "etag": "BwWWja0YfJA=",
-                         "version": 3
-                       }
-
-                **YAML example:**
-
-                ::
-
-                       bindings:
-                       - members:
-                         - user:mike@example.com
-                         - group:admins@example.com
-                         - domain:google.com
-                         - serviceAccount:my-project-id@appspot.gserviceaccount.com
-                         role: roles/resourcemanager.organizationAdmin
-                       - members:
-                         - user:eve@example.com
-                         role: roles/resourcemanager.organizationViewer
-                         condition:
-                           title: expirable access
-                           description: Does not grant access after Sep 2020
-                           expression: request.time < timestamp('2020-10-01T00:00:00.000Z')
-                       etag: BwWWja0YfJA=
-                       version: 3
-
-                For a description of IAM and its features, see the `IAM
-                documentation <https://cloud.google.com/iam/docs/>`__.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseSetIamPolicy._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_set_iam_policy(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseSetIamPolicy._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseSetIamPolicy._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseSetIamPolicy._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.SetIamPolicy",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "SetIamPolicy",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._SetIamPolicy._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = policy_pb2.Policy()
-            pb_resp = resp
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_set_iam_policy(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_set_iam_policy_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.set_iam_policy",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "SetIamPolicy",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _TestIamPermissions(
-        _BaseDatabaseAdminRestTransport._BaseTestIamPermissions, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.TestIamPermissions")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: iam_policy_pb2.TestIamPermissionsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> iam_policy_pb2.TestIamPermissionsResponse:
-            r"""Call the test iam permissions method over HTTP.
-
-            Args:
-                request (~.iam_policy_pb2.TestIamPermissionsRequest):
-                    The request object. Request message for ``TestIamPermissions`` method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.iam_policy_pb2.TestIamPermissionsResponse:
-                    Response message for ``TestIamPermissions`` method.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseTestIamPermissions._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_test_iam_permissions(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseTestIamPermissions._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseTestIamPermissions._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseTestIamPermissions._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.TestIamPermissions",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "TestIamPermissions",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._TestIamPermissions._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = iam_policy_pb2.TestIamPermissionsResponse()
-            pb_resp = resp
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_test_iam_permissions(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_test_iam_permissions_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.test_iam_permissions",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "TestIamPermissions",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _UpdateBackup(
-        _BaseDatabaseAdminRestTransport._BaseUpdateBackup, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.UpdateBackup")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: gsad_backup.UpdateBackupRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> gsad_backup.Backup:
-            r"""Call the update backup method over HTTP.
-
-            Args:
-                request (~.gsad_backup.UpdateBackupRequest):
-                    The request object. The request for
-                [UpdateBackup][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackup].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.gsad_backup.Backup:
-                    A backup of a Cloud Spanner database.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseUpdateBackup._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_update_backup(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseUpdateBackup._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseUpdateBackup._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseUpdateBackup._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.UpdateBackup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateBackup",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._UpdateBackup._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = gsad_backup.Backup()
-            pb_resp = gsad_backup.Backup.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_update_backup(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_update_backup_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = gsad_backup.Backup.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.update_backup",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateBackup",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _UpdateBackupSchedule(
-        _BaseDatabaseAdminRestTransport._BaseUpdateBackupSchedule, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.UpdateBackupSchedule")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: gsad_backup_schedule.UpdateBackupScheduleRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> gsad_backup_schedule.BackupSchedule:
-            r"""Call the update backup schedule method over HTTP.
-
-            Args:
-                request (~.gsad_backup_schedule.UpdateBackupScheduleRequest):
-                    The request object. The request for
-                [UpdateBackupScheduleRequest][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackupSchedule].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.gsad_backup_schedule.BackupSchedule:
-                    BackupSchedule expresses the
-                automated backup creation specification
-                for a Spanner database. Next ID: 10
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseUpdateBackupSchedule._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_update_backup_schedule(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseUpdateBackupSchedule._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseUpdateBackupSchedule._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseUpdateBackupSchedule._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.UpdateBackupSchedule",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateBackupSchedule",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._UpdateBackupSchedule._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = gsad_backup_schedule.BackupSchedule()
-            pb_resp = gsad_backup_schedule.BackupSchedule.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_update_backup_schedule(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_update_backup_schedule_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = gsad_backup_schedule.BackupSchedule.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.update_backup_schedule",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateBackupSchedule",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _UpdateDatabase(
-        _BaseDatabaseAdminRestTransport._BaseUpdateDatabase, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.UpdateDatabase")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.UpdateDatabaseRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the update database method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.UpdateDatabaseRequest):
-                    The request object. The request for
-                [UpdateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabase].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseUpdateDatabase._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_update_database(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseUpdateDatabase._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseUpdateDatabase._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseUpdateDatabase._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.UpdateDatabase",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateDatabase",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._UpdateDatabase._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_update_database(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_update_database_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.update_database",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateDatabase",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _UpdateDatabaseDdl(
-        _BaseDatabaseAdminRestTransport._BaseUpdateDatabaseDdl, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.UpdateDatabaseDdl")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_database_admin.UpdateDatabaseDdlRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the update database ddl method over HTTP.
-
-            Args:
-                request (~.spanner_database_admin.UpdateDatabaseDdlRequest):
-                    The request object. Enqueues the given DDL statements to be applied, in
-                order but not necessarily all at once, to the database
-                schema at some point (or points) in the future. The
-                server checks that the statements are executable
-                (syntactically valid, name tables that exist, etc.)
-                before enqueueing them, but they may still fail upon
-                later execution (e.g., if a statement from another batch
-                of statements is applied first and it conflicts in some
-                way, or if there is some data-related problem like a
-                ``NULL`` value in a column to which ``NOT NULL`` would
-                be added). If a statement fails, all subsequent
-                statements in the batch are automatically cancelled.
-
-                Each batch of statements is assigned a name which can be
-                used with the
-                [Operations][google.longrunning.Operations] API to
-                monitor progress. See the
-                [operation_id][google.spanner.admin.database.v1.UpdateDatabaseDdlRequest.operation_id]
-                field for more details.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseUpdateDatabaseDdl._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_update_database_ddl(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseUpdateDatabaseDdl._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseDatabaseAdminRestTransport._BaseUpdateDatabaseDdl._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseUpdateDatabaseDdl._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.UpdateDatabaseDdl",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateDatabaseDdl",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._UpdateDatabaseDdl._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_update_database_ddl(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_update_database_ddl_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminClient.update_database_ddl",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "UpdateDatabaseDdl",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    @property
-    def add_split_points(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.AddSplitPointsRequest],
-        spanner_database_admin.AddSplitPointsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._AddSplitPoints(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def copy_backup(
-        self,
-    ) -> Callable[[backup.CopyBackupRequest], operations_pb2.Operation]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CopyBackup(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def create_backup(
-        self,
-    ) -> Callable[[gsad_backup.CreateBackupRequest], operations_pb2.Operation]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CreateBackup(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def create_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.CreateBackupScheduleRequest],
-        gsad_backup_schedule.BackupSchedule,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CreateBackupSchedule(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def create_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.CreateDatabaseRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CreateDatabase(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def delete_backup(self) -> Callable[[backup.DeleteBackupRequest], empty_pb2.Empty]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._DeleteBackup(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def delete_backup_schedule(
-        self,
-    ) -> Callable[[backup_schedule.DeleteBackupScheduleRequest], empty_pb2.Empty]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._DeleteBackupSchedule(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def drop_database(
-        self,
-    ) -> Callable[[spanner_database_admin.DropDatabaseRequest], empty_pb2.Empty]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._DropDatabase(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_backup(self) -> Callable[[backup.GetBackupRequest], backup.Backup]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetBackup(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_backup_schedule(
-        self,
-    ) -> Callable[
-        [backup_schedule.GetBackupScheduleRequest], backup_schedule.BackupSchedule
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetBackupSchedule(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseRequest], spanner_database_admin.Database
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetDatabase(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.GetDatabaseDdlRequest],
-        spanner_database_admin.GetDatabaseDdlResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetDatabaseDdl(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], policy_pb2.Policy]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetIamPolicy(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def internal_update_graph_operation(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.InternalUpdateGraphOperationRequest],
-        spanner_database_admin.InternalUpdateGraphOperationResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._InternalUpdateGraphOperation(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_backup_operations(
-        self,
-    ) -> Callable[
-        [backup.ListBackupOperationsRequest], backup.ListBackupOperationsResponse
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListBackupOperations(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_backups(
-        self,
-    ) -> Callable[[backup.ListBackupsRequest], backup.ListBackupsResponse]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListBackups(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_backup_schedules(
-        self,
-    ) -> Callable[
-        [backup_schedule.ListBackupSchedulesRequest],
-        backup_schedule.ListBackupSchedulesResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListBackupSchedules(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_database_operations(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseOperationsRequest],
-        spanner_database_admin.ListDatabaseOperationsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListDatabaseOperations(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_database_roles(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabaseRolesRequest],
-        spanner_database_admin.ListDatabaseRolesResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListDatabaseRoles(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_databases(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.ListDatabasesRequest],
-        spanner_database_admin.ListDatabasesResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListDatabases(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def restore_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.RestoreDatabaseRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._RestoreDatabase(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], policy_pb2.Policy]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._SetIamPolicy(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        iam_policy_pb2.TestIamPermissionsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._TestIamPermissions(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def update_backup(
-        self,
-    ) -> Callable[[gsad_backup.UpdateBackupRequest], gsad_backup.Backup]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._UpdateBackup(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def update_backup_schedule(
-        self,
-    ) -> Callable[
-        [gsad_backup_schedule.UpdateBackupScheduleRequest],
-        gsad_backup_schedule.BackupSchedule,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._UpdateBackupSchedule(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def update_database(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._UpdateDatabase(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def update_database_ddl(
-        self,
-    ) -> Callable[
-        [spanner_database_admin.UpdateDatabaseDdlRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._UpdateDatabaseDdl(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def cancel_operation(self):
-        return self._CancelOperation(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _CancelOperation(
-        _BaseDatabaseAdminRestTransport._BaseCancelOperation, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.CancelOperation")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.CancelOperationRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> None:
-            r"""Call the cancel operation method over HTTP.
-
-            Args:
-                request (operations_pb2.CancelOperationRequest):
-                    The request object for CancelOperation method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseCancelOperation._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_cancel_operation(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseCancelOperation._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseCancelOperation._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.CancelOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "CancelOperation",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._CancelOperation._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            return self._interceptor.post_cancel_operation(None)
-
-    @property
-    def delete_operation(self):
-        return self._DeleteOperation(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _DeleteOperation(
-        _BaseDatabaseAdminRestTransport._BaseDeleteOperation, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.DeleteOperation")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.DeleteOperationRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> None:
-            r"""Call the delete operation method over HTTP.
-
-            Args:
-                request (operations_pb2.DeleteOperationRequest):
-                    The request object for DeleteOperation method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseDeleteOperation._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_operation(
-                request, metadata
-            )
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseDeleteOperation._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseDeleteOperation._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.DeleteOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "DeleteOperation",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._DeleteOperation._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            return self._interceptor.post_delete_operation(None)
-
-    @property
-    def get_operation(self):
-        return self._GetOperation(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _GetOperation(
-        _BaseDatabaseAdminRestTransport._BaseGetOperation, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.GetOperation")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.GetOperationRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the get operation method over HTTP.
-
-            Args:
-                request (operations_pb2.GetOperationRequest):
-                    The request object for GetOperation method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                operations_pb2.Operation: Response from GetOperation method.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseGetOperation._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_operation(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseGetOperation._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseGetOperation._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.GetOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetOperation",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._GetOperation._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            content = response.content.decode("utf-8")
-            resp = operations_pb2.Operation()
-            resp = json_format.Parse(content, resp)
-            resp = self._interceptor.post_get_operation(resp)
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminAsyncClient.GetOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "GetOperation",
-                        "httpResponse": http_response,
-                        "metadata": http_response["headers"],
-                    },
-                )
-            return resp
-
-    @property
-    def list_operations(self):
-        return self._ListOperations(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _ListOperations(
-        _BaseDatabaseAdminRestTransport._BaseListOperations, DatabaseAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("DatabaseAdminRestTransport.ListOperations")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.ListOperationsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.ListOperationsResponse:
-            r"""Call the list operations method over HTTP.
-
-            Args:
-                request (operations_pb2.ListOperationsRequest):
-                    The request object for ListOperations method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                operations_pb2.ListOperationsResponse: Response from ListOperations method.
-            """
-
-            http_options = (
-                _BaseDatabaseAdminRestTransport._BaseListOperations._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_operations(request, metadata)
-            transcoded_request = _BaseDatabaseAdminRestTransport._BaseListOperations._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseDatabaseAdminRestTransport._BaseListOperations._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.database_v1.DatabaseAdminClient.ListOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListOperations",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = DatabaseAdminRestTransport._ListOperations._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            content = response.content.decode("utf-8")
-            resp = operations_pb2.ListOperationsResponse()
-            resp = json_format.Parse(content, resp)
-            resp = self._interceptor.post_list_operations(resp)
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.database_v1.DatabaseAdminAsyncClient.ListOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.database.v1.DatabaseAdmin",
-                        "rpcName": "ListOperations",
-                        "httpResponse": http_response,
-                        "metadata": http_response["headers"],
-                    },
-                )
-            return resp
-
-    @property
-    def kind(self) -> str:
-        return "rest"
-
-    def close(self):
-        self._session.close()
-
-
-__all__ = ("DatabaseAdminRestTransport",)
diff --git a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest_base.py b/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest_base.py
deleted file mode 100644
index 82c388f382..0000000000
--- a/google/cloud/spanner_admin_database_v1/services/database_admin/transports/rest_base.py
+++ /dev/null
@@ -1,1652 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import json  # type: ignore
-import re
-from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple, Union
-
-from google.api_core import gapic_v1, path_template
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import json_format
-
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-from google.cloud.spanner_admin_database_v1.types import spanner_database_admin
-
-from .base import DEFAULT_CLIENT_INFO, DatabaseAdminTransport
-
-
-class _BaseDatabaseAdminRestTransport(DatabaseAdminTransport):
-    """Base REST backend transport for DatabaseAdmin.
-
-    Note: This class is not meant to be used directly. Use its sync and
-    async sub-classes instead.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends JSON representations of protocol buffers over HTTP/1.1
-    """
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[Any] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        url_scheme: str = "https",
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[Any]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you are developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-            url_scheme: the protocol scheme for the API endpoint.  Normally
-                "https", but for testing or local servers,
-                "http" can be specified.
-        """
-        # Run the base constructor
-        maybe_url_match = re.match("^(?P<scheme>http(?:s)?://)?(?P<host>.*)$", host)
-        if maybe_url_match is None:
-            raise ValueError(
-                f"Unexpected hostname structure: {host}"
-            )  # pragma: NO COVER
-
-        url_match_items = maybe_url_match.groupdict()
-
-        host = f"{url_scheme}://{host}" if not url_match_items["scheme"] else host
-
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-    class _BaseAddSplitPoints:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{database=projects/*/instances/*/databases/*}:addSplitPoints",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.AddSplitPointsRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseAddSplitPoints._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCopyBackup:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*/instances/*}/backups:copy",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup.CopyBackupRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseCopyBackup._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCreateBackup:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {
-            "backupId": "",
-        }
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*/instances/*}/backups",
-                    "body": "backup",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = gsad_backup.CreateBackupRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseCreateBackup._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCreateBackupSchedule:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {
-            "backupScheduleId": "",
-        }
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*/instances/*/databases/*}/backupSchedules",
-                    "body": "backup_schedule",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = gsad_backup_schedule.CreateBackupScheduleRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseCreateBackupSchedule._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCreateDatabase:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*/instances/*}/databases",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.CreateDatabaseRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseCreateDatabase._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseDeleteBackup:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup.DeleteBackupRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseDeleteBackup._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseDeleteBackupSchedule:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/backupSchedules/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup_schedule.DeleteBackupScheduleRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseDeleteBackupSchedule._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseDropDatabase:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{database=projects/*/instances/*/databases/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.DropDatabaseRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseDropDatabase._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetBackup:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup.GetBackupRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseGetBackup._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetBackupSchedule:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/backupSchedules/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup_schedule.GetBackupScheduleRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseGetBackupSchedule._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetDatabase:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.GetDatabaseRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseGetDatabase._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetDatabaseDdl:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{database=projects/*/instances/*/databases/*}/ddl",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.GetDatabaseDdlRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseGetDatabaseDdl._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetIamPolicy:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/databases/*}:getIamPolicy",
-                    "body": "*",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/backups/*}:getIamPolicy",
-                    "body": "*",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/databases/*/backupSchedules/*}:getIamPolicy",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = request
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseGetIamPolicy._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseInternalUpdateGraphOperation:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-    class _BaseListBackupOperations:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*}/backupOperations",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup.ListBackupOperationsRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseListBackupOperations._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListBackups:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*}/backups",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup.ListBackupsRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseListBackups._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListBackupSchedules:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*/databases/*}/backupSchedules",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = backup_schedule.ListBackupSchedulesRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseListBackupSchedules._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListDatabaseOperations:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*}/databaseOperations",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.ListDatabaseOperationsRequest.pb(
-                request
-            )
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseListDatabaseOperations._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListDatabaseRoles:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*/databases/*}/databaseRoles",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.ListDatabaseRolesRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseListDatabaseRoles._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListDatabases:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*}/databases",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.ListDatabasesRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseListDatabases._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseRestoreDatabase:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*/instances/*}/databases:restore",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.RestoreDatabaseRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseRestoreDatabase._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseSetIamPolicy:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/databases/*}:setIamPolicy",
-                    "body": "*",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/backups/*}:setIamPolicy",
-                    "body": "*",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/databases/*/backupSchedules/*}:setIamPolicy",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = request
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseSetIamPolicy._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseTestIamPermissions:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/databases/*}:testIamPermissions",
-                    "body": "*",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/backups/*}:testIamPermissions",
-                    "body": "*",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/databases/*/backupSchedules/*}:testIamPermissions",
-                    "body": "*",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*/databases/*/databaseRoles/*}:testIamPermissions",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = request
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseTestIamPermissions._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseUpdateBackup:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {
-            "updateMask": {},
-        }
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "patch",
-                    "uri": "/v1/{backup.name=projects/*/instances/*/backups/*}",
-                    "body": "backup",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = gsad_backup.UpdateBackupRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseUpdateBackup._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseUpdateBackupSchedule:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {
-            "updateMask": {},
-        }
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "patch",
-                    "uri": "/v1/{backup_schedule.name=projects/*/instances/*/databases/*/backupSchedules/*}",
-                    "body": "backup_schedule",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = gsad_backup_schedule.UpdateBackupScheduleRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseUpdateBackupSchedule._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseUpdateDatabase:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {
-            "updateMask": {},
-        }
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "patch",
-                    "uri": "/v1/{database.name=projects/*/instances/*/databases/*}",
-                    "body": "database",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.UpdateDatabaseRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseUpdateDatabase._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseUpdateDatabaseDdl:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "patch",
-                    "uri": "/v1/{database=projects/*/instances/*/databases/*}/ddl",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_database_admin.UpdateDatabaseDdlRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseDatabaseAdminRestTransport._BaseUpdateDatabaseDdl._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCancelOperation:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}:cancel",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-    class _BaseDeleteOperation:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-    class _BaseGetOperation:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-    class _BaseListOperations:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-
-__all__ = ("_BaseDatabaseAdminRestTransport",)
diff --git a/google/cloud/spanner_admin_database_v1/types/__init__.py b/google/cloud/spanner_admin_database_v1/types/__init__.py
deleted file mode 100644
index 46cd649f68..0000000000
--- a/google/cloud/spanner_admin_database_v1/types/__init__.py
+++ /dev/null
@@ -1,143 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from .backup import (
-    Backup,
-    BackupInfo,
-    BackupInstancePartition,
-    CopyBackupEncryptionConfig,
-    CopyBackupMetadata,
-    CopyBackupRequest,
-    CreateBackupEncryptionConfig,
-    CreateBackupMetadata,
-    CreateBackupRequest,
-    DeleteBackupRequest,
-    FullBackupSpec,
-    GetBackupRequest,
-    IncrementalBackupSpec,
-    ListBackupOperationsRequest,
-    ListBackupOperationsResponse,
-    ListBackupsRequest,
-    ListBackupsResponse,
-    UpdateBackupRequest,
-)
-from .backup_schedule import (
-    BackupSchedule,
-    BackupScheduleSpec,
-    CreateBackupScheduleRequest,
-    CrontabSpec,
-    DeleteBackupScheduleRequest,
-    GetBackupScheduleRequest,
-    ListBackupSchedulesRequest,
-    ListBackupSchedulesResponse,
-    UpdateBackupScheduleRequest,
-)
-from .common import DatabaseDialect, EncryptionConfig, EncryptionInfo, OperationProgress
-from .spanner_database_admin import (
-    AddSplitPointsRequest,
-    AddSplitPointsResponse,
-    CreateDatabaseMetadata,
-    CreateDatabaseRequest,
-    Database,
-    DatabaseRole,
-    DdlStatementActionInfo,
-    DropDatabaseRequest,
-    GetDatabaseDdlRequest,
-    GetDatabaseDdlResponse,
-    GetDatabaseRequest,
-    InternalUpdateGraphOperationRequest,
-    InternalUpdateGraphOperationResponse,
-    ListDatabaseOperationsRequest,
-    ListDatabaseOperationsResponse,
-    ListDatabaseRolesRequest,
-    ListDatabaseRolesResponse,
-    ListDatabasesRequest,
-    ListDatabasesResponse,
-    OptimizeRestoredDatabaseMetadata,
-    RestoreDatabaseEncryptionConfig,
-    RestoreDatabaseMetadata,
-    RestoreDatabaseRequest,
-    RestoreInfo,
-    RestoreSourceType,
-    SplitPoints,
-    UpdateDatabaseDdlMetadata,
-    UpdateDatabaseDdlRequest,
-    UpdateDatabaseMetadata,
-    UpdateDatabaseRequest,
-)
-
-__all__ = (
-    "Backup",
-    "BackupInfo",
-    "BackupInstancePartition",
-    "CopyBackupEncryptionConfig",
-    "CopyBackupMetadata",
-    "CopyBackupRequest",
-    "CreateBackupEncryptionConfig",
-    "CreateBackupMetadata",
-    "CreateBackupRequest",
-    "DeleteBackupRequest",
-    "FullBackupSpec",
-    "GetBackupRequest",
-    "IncrementalBackupSpec",
-    "ListBackupOperationsRequest",
-    "ListBackupOperationsResponse",
-    "ListBackupsRequest",
-    "ListBackupsResponse",
-    "UpdateBackupRequest",
-    "BackupSchedule",
-    "BackupScheduleSpec",
-    "CreateBackupScheduleRequest",
-    "CrontabSpec",
-    "DeleteBackupScheduleRequest",
-    "GetBackupScheduleRequest",
-    "ListBackupSchedulesRequest",
-    "ListBackupSchedulesResponse",
-    "UpdateBackupScheduleRequest",
-    "EncryptionConfig",
-    "EncryptionInfo",
-    "OperationProgress",
-    "DatabaseDialect",
-    "AddSplitPointsRequest",
-    "AddSplitPointsResponse",
-    "CreateDatabaseMetadata",
-    "CreateDatabaseRequest",
-    "Database",
-    "DatabaseRole",
-    "DdlStatementActionInfo",
-    "DropDatabaseRequest",
-    "GetDatabaseDdlRequest",
-    "GetDatabaseDdlResponse",
-    "GetDatabaseRequest",
-    "InternalUpdateGraphOperationRequest",
-    "InternalUpdateGraphOperationResponse",
-    "ListDatabaseOperationsRequest",
-    "ListDatabaseOperationsResponse",
-    "ListDatabaseRolesRequest",
-    "ListDatabaseRolesResponse",
-    "ListDatabasesRequest",
-    "ListDatabasesResponse",
-    "OptimizeRestoredDatabaseMetadata",
-    "RestoreDatabaseEncryptionConfig",
-    "RestoreDatabaseMetadata",
-    "RestoreDatabaseRequest",
-    "RestoreInfo",
-    "SplitPoints",
-    "UpdateDatabaseDdlMetadata",
-    "UpdateDatabaseDdlRequest",
-    "UpdateDatabaseMetadata",
-    "UpdateDatabaseRequest",
-    "RestoreSourceType",
-)
diff --git a/google/cloud/spanner_admin_database_v1/types/backup.py b/google/cloud/spanner_admin_database_v1/types/backup.py
deleted file mode 100644
index 6c1f322aec..0000000000
--- a/google/cloud/spanner_admin_database_v1/types/backup.py
+++ /dev/null
@@ -1,1103 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.types import common
-
-__protobuf__ = proto.module(
-    package="google.spanner.admin.database.v1",
-    manifest={
-        "Backup",
-        "CreateBackupRequest",
-        "CreateBackupMetadata",
-        "CopyBackupRequest",
-        "CopyBackupMetadata",
-        "UpdateBackupRequest",
-        "GetBackupRequest",
-        "DeleteBackupRequest",
-        "ListBackupsRequest",
-        "ListBackupsResponse",
-        "ListBackupOperationsRequest",
-        "ListBackupOperationsResponse",
-        "BackupInfo",
-        "CreateBackupEncryptionConfig",
-        "CopyBackupEncryptionConfig",
-        "FullBackupSpec",
-        "IncrementalBackupSpec",
-        "BackupInstancePartition",
-    },
-)
-
-
-class Backup(proto.Message):
-    r"""A backup of a Cloud Spanner database.
-
-    Attributes:
-        database (str):
-            Required for the
-            [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup]
-            operation. Name of the database from which this backup was
-            created. This needs to be in the same instance as the
-            backup. Values are of the form
-            ``projects/<project>/instances/<instance>/databases/<database>``.
-        version_time (google.protobuf.timestamp_pb2.Timestamp):
-            The backup will contain an externally consistent copy of the
-            database at the timestamp specified by ``version_time``. If
-            ``version_time`` is not specified, the system will set
-            ``version_time`` to the ``create_time`` of the backup.
-        expire_time (google.protobuf.timestamp_pb2.Timestamp):
-            Required for the
-            [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup]
-            operation. The expiration time of the backup, with
-            microseconds granularity that must be at least 6 hours and
-            at most 366 days from the time the CreateBackup request is
-            processed. Once the ``expire_time`` has passed, the backup
-            is eligible to be automatically deleted by Cloud Spanner to
-            free the resources used by the backup.
-        name (str):
-            Output only for the
-            [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup]
-            operation. Required for the
-            [UpdateBackup][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackup]
-            operation.
-
-            A globally unique identifier for the backup which cannot be
-            changed. Values are of the form
-            ``projects/<project>/instances/<instance>/backups/[a-z][a-z0-9_\-]*[a-z0-9]``
-            The final segment of the name must be between 2 and 60
-            characters in length.
-
-            The backup is stored in the location(s) specified in the
-            instance configuration of the instance containing the
-            backup, identified by the prefix of the backup name of the
-            form ``projects/<project>/instances/<instance>``.
-        create_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The time the
-            [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup]
-            request is received. If the request does not specify
-            ``version_time``, the ``version_time`` of the backup will be
-            equivalent to the ``create_time``.
-        size_bytes (int):
-            Output only. Size of the backup in bytes.
-        freeable_size_bytes (int):
-            Output only. The number of bytes that will be
-            freed by deleting this backup. This value will
-            be zero if, for example, this backup is part of
-            an incremental backup chain and younger backups
-            in the chain require that we keep its data. For
-            backups not in an incremental backup chain, this
-            is always the size of the backup. This value may
-            change if backups on the same chain get created,
-            deleted or expired.
-        exclusive_size_bytes (int):
-            Output only. For a backup in an incremental
-            backup chain, this is the storage space needed
-            to keep the data that has changed since the
-            previous backup. For all other backups, this is
-            always the size of the backup. This value may
-            change if backups on the same chain get deleted
-            or expired.
-
-            This field can be used to calculate the total
-            storage space used by a set of backups. For
-            example, the total space used by all backups of
-            a database can be computed by summing up this
-            field.
-        state (google.cloud.spanner_admin_database_v1.types.Backup.State):
-            Output only. The current state of the backup.
-        referencing_databases (MutableSequence[str]):
-            Output only. The names of the restored databases that
-            reference the backup. The database names are of the form
-            ``projects/<project>/instances/<instance>/databases/<database>``.
-            Referencing databases may exist in different instances. The
-            existence of any referencing database prevents the backup
-            from being deleted. When a restored database from the backup
-            enters the ``READY`` state, the reference to the backup is
-            removed.
-        encryption_info (google.cloud.spanner_admin_database_v1.types.EncryptionInfo):
-            Output only. The encryption information for
-            the backup.
-        encryption_information (MutableSequence[google.cloud.spanner_admin_database_v1.types.EncryptionInfo]):
-            Output only. The encryption information for the backup,
-            whether it is protected by one or more KMS keys. The
-            information includes all Cloud KMS key versions used to
-            encrypt the backup. The
-            ``encryption_status' field inside of each``\ EncryptionInfo\`
-            is not populated. At least one of the key versions must be
-            available for the backup to be restored. If a key version is
-            revoked in the middle of a restore, the restore behavior is
-            undefined.
-        database_dialect (google.cloud.spanner_admin_database_v1.types.DatabaseDialect):
-            Output only. The database dialect information
-            for the backup.
-        referencing_backups (MutableSequence[str]):
-            Output only. The names of the destination backups being
-            created by copying this source backup. The backup names are
-            of the form
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-            Referencing backups may exist in different instances. The
-            existence of any referencing backup prevents the backup from
-            being deleted. When the copy operation is done (either
-            successfully completed or cancelled or the destination
-            backup is deleted), the reference to the backup is removed.
-        max_expire_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The max allowed expiration time of the backup,
-            with microseconds granularity. A backup's expiration time
-            can be configured in multiple APIs: CreateBackup,
-            UpdateBackup, CopyBackup. When updating or copying an
-            existing backup, the expiration time specified must be less
-            than ``Backup.max_expire_time``.
-        backup_schedules (MutableSequence[str]):
-            Output only. List of backup schedule URIs
-            that are associated with creating this backup.
-            This is only applicable for scheduled backups,
-            and is empty for on-demand backups.
-
-            To optimize for storage, whenever possible,
-            multiple schedules are collapsed together to
-            create one backup. In such cases, this field
-            captures the list of all backup schedule URIs
-            that are associated with creating this backup.
-            If collapsing is not done, then this field
-            captures the single backup schedule URI
-            associated with creating this backup.
-        incremental_backup_chain_id (str):
-            Output only. Populated only for backups in an incremental
-            backup chain. Backups share the same chain id if and only if
-            they belong to the same incremental backup chain. Use this
-            field to determine which backups are part of the same
-            incremental backup chain. The ordering of backups in the
-            chain can be determined by ordering the backup
-            ``version_time``.
-        oldest_version_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. Data deleted at a time older
-            than this is guaranteed not to be retained in
-            order to support this backup. For a backup in an
-            incremental backup chain, this is the version
-            time of the oldest backup that exists or ever
-            existed in the chain. For all other backups,
-            this is the version time of the backup. This
-            field can be used to understand what data is
-            being retained by the backup system.
-        instance_partitions (MutableSequence[google.cloud.spanner_admin_database_v1.types.BackupInstancePartition]):
-            Output only. The instance partition(s) storing the backup.
-
-            This is the same as the list of the instance partition(s)
-            that the database had footprint in at the backup's
-            ``version_time``.
-    """
-
-    class State(proto.Enum):
-        r"""Indicates the current state of the backup.
-
-        Values:
-            STATE_UNSPECIFIED (0):
-                Not specified.
-            CREATING (1):
-                The pending backup is still being created. Operations on the
-                backup may fail with ``FAILED_PRECONDITION`` in this state.
-            READY (2):
-                The backup is complete and ready for use.
-        """
-        STATE_UNSPECIFIED = 0
-        CREATING = 1
-        READY = 2
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    version_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=9,
-        message=timestamp_pb2.Timestamp,
-    )
-    expire_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    create_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-    size_bytes: int = proto.Field(
-        proto.INT64,
-        number=5,
-    )
-    freeable_size_bytes: int = proto.Field(
-        proto.INT64,
-        number=15,
-    )
-    exclusive_size_bytes: int = proto.Field(
-        proto.INT64,
-        number=16,
-    )
-    state: State = proto.Field(
-        proto.ENUM,
-        number=6,
-        enum=State,
-    )
-    referencing_databases: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=7,
-    )
-    encryption_info: common.EncryptionInfo = proto.Field(
-        proto.MESSAGE,
-        number=8,
-        message=common.EncryptionInfo,
-    )
-    encryption_information: MutableSequence[
-        common.EncryptionInfo
-    ] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=13,
-        message=common.EncryptionInfo,
-    )
-    database_dialect: common.DatabaseDialect = proto.Field(
-        proto.ENUM,
-        number=10,
-        enum=common.DatabaseDialect,
-    )
-    referencing_backups: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=11,
-    )
-    max_expire_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=12,
-        message=timestamp_pb2.Timestamp,
-    )
-    backup_schedules: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=14,
-    )
-    incremental_backup_chain_id: str = proto.Field(
-        proto.STRING,
-        number=17,
-    )
-    oldest_version_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=18,
-        message=timestamp_pb2.Timestamp,
-    )
-    instance_partitions: MutableSequence[
-        "BackupInstancePartition"
-    ] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=19,
-        message="BackupInstancePartition",
-    )
-
-
-class CreateBackupRequest(proto.Message):
-    r"""The request for
-    [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup].
-
-    Attributes:
-        parent (str):
-            Required. The name of the instance in which the backup will
-            be created. This must be the same instance that contains the
-            database the backup will be created from. The backup will be
-            stored in the location(s) specified in the instance
-            configuration of this instance. Values are of the form
-            ``projects/<project>/instances/<instance>``.
-        backup_id (str):
-            Required. The id of the backup to be created. The
-            ``backup_id`` appended to ``parent`` forms the full backup
-            name of the form
-            ``projects/<project>/instances/<instance>/backups/<backup_id>``.
-        backup (google.cloud.spanner_admin_database_v1.types.Backup):
-            Required. The backup to create.
-        encryption_config (google.cloud.spanner_admin_database_v1.types.CreateBackupEncryptionConfig):
-            Optional. The encryption configuration used to encrypt the
-            backup. If this field is not specified, the backup will use
-            the same encryption configuration as the database by
-            default, namely
-            [encryption_type][google.spanner.admin.database.v1.CreateBackupEncryptionConfig.encryption_type]
-            = ``USE_DATABASE_ENCRYPTION``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    backup_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    backup: "Backup" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="Backup",
-    )
-    encryption_config: "CreateBackupEncryptionConfig" = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message="CreateBackupEncryptionConfig",
-    )
-
-
-class CreateBackupMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup].
-
-    Attributes:
-        name (str):
-            The name of the backup being created.
-        database (str):
-            The name of the database the backup is
-            created from.
-        progress (google.cloud.spanner_admin_database_v1.types.OperationProgress):
-            The progress of the
-            [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup]
-            operation.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which cancellation of this operation was
-            received.
-            [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
-            starts asynchronous cancellation on a long-running
-            operation. The server makes a best effort to cancel the
-            operation, but success is not guaranteed. Clients can use
-            [Operations.GetOperation][google.longrunning.Operations.GetOperation]
-            or other methods to check whether the cancellation succeeded
-            or whether the operation completed despite cancellation. On
-            successful cancellation, the operation is not deleted;
-            instead, it becomes an operation with an
-            [Operation.error][google.longrunning.Operation.error] value
-            with a [google.rpc.Status.code][google.rpc.Status.code] of
-            1, corresponding to ``Code.CANCELLED``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    database: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=common.OperationProgress,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class CopyBackupRequest(proto.Message):
-    r"""The request for
-    [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
-
-    Attributes:
-        parent (str):
-            Required. The name of the destination instance that will
-            contain the backup copy. Values are of the form:
-            ``projects/<project>/instances/<instance>``.
-        backup_id (str):
-            Required. The id of the backup copy. The ``backup_id``
-            appended to ``parent`` forms the full backup_uri of the form
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-        source_backup (str):
-            Required. The source backup to be copied. The source backup
-            needs to be in READY state for it to be copied. Once
-            CopyBackup is in progress, the source backup cannot be
-            deleted or cleaned up on expiration until CopyBackup is
-            finished. Values are of the form:
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-        expire_time (google.protobuf.timestamp_pb2.Timestamp):
-            Required. The expiration time of the backup in microsecond
-            granularity. The expiration time must be at least 6 hours
-            and at most 366 days from the ``create_time`` of the source
-            backup. Once the ``expire_time`` has passed, the backup is
-            eligible to be automatically deleted by Cloud Spanner to
-            free the resources used by the backup.
-        encryption_config (google.cloud.spanner_admin_database_v1.types.CopyBackupEncryptionConfig):
-            Optional. The encryption configuration used to encrypt the
-            backup. If this field is not specified, the backup will use
-            the same encryption configuration as the source backup by
-            default, namely
-            [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type]
-            = ``USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    backup_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    source_backup: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    expire_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-    encryption_config: "CopyBackupEncryptionConfig" = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message="CopyBackupEncryptionConfig",
-    )
-
-
-class CopyBackupMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
-
-    Attributes:
-        name (str):
-            The name of the backup being created through the copy
-            operation. Values are of the form
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-        source_backup (str):
-            The name of the source backup that is being copied. Values
-            are of the form
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-        progress (google.cloud.spanner_admin_database_v1.types.OperationProgress):
-            The progress of the
-            [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup]
-            operation.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which cancellation of CopyBackup operation was
-            received.
-            [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
-            starts asynchronous cancellation on a long-running
-            operation. The server makes a best effort to cancel the
-            operation, but success is not guaranteed. Clients can use
-            [Operations.GetOperation][google.longrunning.Operations.GetOperation]
-            or other methods to check whether the cancellation succeeded
-            or whether the operation completed despite cancellation. On
-            successful cancellation, the operation is not deleted;
-            instead, it becomes an operation with an
-            [Operation.error][google.longrunning.Operation.error] value
-            with a [google.rpc.Status.code][google.rpc.Status.code] of
-            1, corresponding to ``Code.CANCELLED``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    source_backup: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=common.OperationProgress,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class UpdateBackupRequest(proto.Message):
-    r"""The request for
-    [UpdateBackup][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackup].
-
-    Attributes:
-        backup (google.cloud.spanner_admin_database_v1.types.Backup):
-            Required. The backup to update. ``backup.name``, and the
-            fields to be updated as specified by ``update_mask`` are
-            required. Other fields are ignored. Update is only supported
-            for the following fields:
-
-            - ``backup.expire_time``.
-        update_mask (google.protobuf.field_mask_pb2.FieldMask):
-            Required. A mask specifying which fields (e.g.
-            ``expire_time``) in the Backup resource should be updated.
-            This mask is relative to the Backup resource, not to the
-            request message. The field mask must always be specified;
-            this prevents any future fields from being erased
-            accidentally by clients that do not know about them.
-    """
-
-    backup: "Backup" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="Backup",
-    )
-    update_mask: field_mask_pb2.FieldMask = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=field_mask_pb2.FieldMask,
-    )
-
-
-class GetBackupRequest(proto.Message):
-    r"""The request for
-    [GetBackup][google.spanner.admin.database.v1.DatabaseAdmin.GetBackup].
-
-    Attributes:
-        name (str):
-            Required. Name of the backup. Values are of the form
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class DeleteBackupRequest(proto.Message):
-    r"""The request for
-    [DeleteBackup][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackup].
-
-    Attributes:
-        name (str):
-            Required. Name of the backup to delete. Values are of the
-            form
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class ListBackupsRequest(proto.Message):
-    r"""The request for
-    [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-
-    Attributes:
-        parent (str):
-            Required. The instance to list backups from. Values are of
-            the form ``projects/<project>/instances/<instance>``.
-        filter (str):
-            An expression that filters the list of returned backups.
-
-            A filter expression consists of a field name, a comparison
-            operator, and a value for filtering. The value must be a
-            string, a number, or a boolean. The comparison operator must
-            be one of: ``<``, ``>``, ``<=``, ``>=``, ``!=``, ``=``, or
-            ``:``. Colon ``:`` is the contains operator. Filter rules
-            are not case sensitive.
-
-            The following fields in the
-            [Backup][google.spanner.admin.database.v1.Backup] are
-            eligible for filtering:
-
-            - ``name``
-            - ``database``
-            - ``state``
-            - ``create_time`` (and values are of the format
-              YYYY-MM-DDTHH:MM:SSZ)
-            - ``expire_time`` (and values are of the format
-              YYYY-MM-DDTHH:MM:SSZ)
-            - ``version_time`` (and values are of the format
-              YYYY-MM-DDTHH:MM:SSZ)
-            - ``size_bytes``
-            - ``backup_schedules``
-
-            You can combine multiple expressions by enclosing each
-            expression in parentheses. By default, expressions are
-            combined with AND logic, but you can specify AND, OR, and
-            NOT logic explicitly.
-
-            Here are a few examples:
-
-            - ``name:Howl`` - The backup's name contains the string
-              "howl".
-            - ``database:prod`` - The database's name contains the
-              string "prod".
-            - ``state:CREATING`` - The backup is pending creation.
-            - ``state:READY`` - The backup is fully created and ready
-              for use.
-            - ``(name:howl) AND (create_time < \"2018-03-28T14:50:00Z\")``
-              - The backup name contains the string "howl" and
-              ``create_time`` of the backup is before
-              2018-03-28T14:50:00Z.
-            - ``expire_time < \"2018-03-28T14:50:00Z\"`` - The backup
-              ``expire_time`` is before 2018-03-28T14:50:00Z.
-            - ``size_bytes > 10000000000`` - The backup's size is
-              greater than 10GB
-            - ``backup_schedules:daily`` - The backup is created from a
-              schedule with "daily" in its name.
-        page_size (int):
-            Number of backups to be returned in the
-            response. If 0 or less, defaults to the server's
-            maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.database.v1.ListBackupsResponse.next_page_token]
-            from a previous
-            [ListBackupsResponse][google.spanner.admin.database.v1.ListBackupsResponse]
-            to the same ``parent`` and with the same ``filter``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    filter: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-
-
-class ListBackupsResponse(proto.Message):
-    r"""The response for
-    [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups].
-
-    Attributes:
-        backups (MutableSequence[google.cloud.spanner_admin_database_v1.types.Backup]):
-            The list of matching backups. Backups returned are ordered
-            by ``create_time`` in descending order, starting from the
-            most recent ``create_time``.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListBackups][google.spanner.admin.database.v1.DatabaseAdmin.ListBackups]
-            call to fetch more of the matching backups.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    backups: MutableSequence["Backup"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="Backup",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class ListBackupOperationsRequest(proto.Message):
-    r"""The request for
-    [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-
-    Attributes:
-        parent (str):
-            Required. The instance of the backup operations. Values are
-            of the form ``projects/<project>/instances/<instance>``.
-        filter (str):
-            An expression that filters the list of returned backup
-            operations.
-
-            A filter expression consists of a field name, a comparison
-            operator, and a value for filtering. The value must be a
-            string, a number, or a boolean. The comparison operator must
-            be one of: ``<``, ``>``, ``<=``, ``>=``, ``!=``, ``=``, or
-            ``:``. Colon ``:`` is the contains operator. Filter rules
-            are not case sensitive.
-
-            The following fields in the
-            [operation][google.longrunning.Operation] are eligible for
-            filtering:
-
-            - ``name`` - The name of the long-running operation
-            - ``done`` - False if the operation is in progress, else
-              true.
-            - ``metadata.@type`` - the type of metadata. For example,
-              the type string for
-              [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]
-              is
-              ``type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata``.
-            - ``metadata.<field_name>`` - any field in metadata.value.
-              ``metadata.@type`` must be specified first if filtering on
-              metadata fields.
-            - ``error`` - Error associated with the long-running
-              operation.
-            - ``response.@type`` - the type of response.
-            - ``response.<field_name>`` - any field in response.value.
-
-            You can combine multiple expressions by enclosing each
-            expression in parentheses. By default, expressions are
-            combined with AND logic, but you can specify AND, OR, and
-            NOT logic explicitly.
-
-            Here are a few examples:
-
-            - ``done:true`` - The operation is complete.
-            - ``(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND``
-              ``metadata.database:prod`` - Returns operations where:
-
-              - The operation's metadata type is
-                [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
-              - The source database name of backup contains the string
-                "prod".
-
-            - ``(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND``
-              ``(metadata.name:howl) AND``
-              ``(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND``
-              ``(error:*)`` - Returns operations where:
-
-              - The operation's metadata type is
-                [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
-              - The backup name contains the string "howl".
-              - The operation started before 2018-03-28T14:50:00Z.
-              - The operation resulted in an error.
-
-            - ``(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND``
-              ``(metadata.source_backup:test) AND``
-              ``(metadata.progress.start_time < \"2022-01-18T14:50:00Z\") AND``
-              ``(error:*)`` - Returns operations where:
-
-              - The operation's metadata type is
-                [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
-              - The source backup name contains the string "test".
-              - The operation started before 2022-01-18T14:50:00Z.
-              - The operation resulted in an error.
-
-            - ``((metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND``
-              ``(metadata.database:test_db)) OR``
-              ``((metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND``
-              ``(metadata.source_backup:test_bkp)) AND``
-              ``(error:*)`` - Returns operations where:
-
-              - The operation's metadata matches either of criteria:
-
-                - The operation's metadata type is
-                  [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]
-                  AND the source database name of the backup contains
-                  the string "test_db"
-                - The operation's metadata type is
-                  [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]
-                  AND the source backup name contains the string
-                  "test_bkp"
-
-              - The operation resulted in an error.
-        page_size (int):
-            Number of operations to be returned in the
-            response. If 0 or less, defaults to the server's
-            maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.database.v1.ListBackupOperationsResponse.next_page_token]
-            from a previous
-            [ListBackupOperationsResponse][google.spanner.admin.database.v1.ListBackupOperationsResponse]
-            to the same ``parent`` and with the same ``filter``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    filter: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-
-
-class ListBackupOperationsResponse(proto.Message):
-    r"""The response for
-    [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations].
-
-    Attributes:
-        operations (MutableSequence[google.longrunning.operations_pb2.Operation]):
-            The list of matching backup [long-running
-            operations][google.longrunning.Operation]. Each operation's
-            name will be prefixed by the backup's name. The operation's
-            [metadata][google.longrunning.Operation.metadata] field type
-            ``metadata.type_url`` describes the type of the metadata.
-            Operations returned include those that are pending or have
-            completed/failed/canceled within the last 7 days. Operations
-            returned are ordered by
-            ``operation.metadata.value.progress.start_time`` in
-            descending order starting from the most recently started
-            operation.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListBackupOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupOperations]
-            call to fetch more of the matching metadata.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    operations: MutableSequence[operations_pb2.Operation] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=operations_pb2.Operation,
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class BackupInfo(proto.Message):
-    r"""Information about a backup.
-
-    Attributes:
-        backup (str):
-            Name of the backup.
-        version_time (google.protobuf.timestamp_pb2.Timestamp):
-            The backup contains an externally consistent copy of
-            ``source_database`` at the timestamp specified by
-            ``version_time``. If the
-            [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup]
-            request did not specify ``version_time``, the
-            ``version_time`` of the backup is equivalent to the
-            ``create_time``.
-        create_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time the
-            [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup]
-            request was received.
-        source_database (str):
-            Name of the database the backup was created
-            from.
-    """
-
-    backup: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    version_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-    create_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    source_database: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-
-
-class CreateBackupEncryptionConfig(proto.Message):
-    r"""Encryption configuration for the backup to create.
-
-    Attributes:
-        encryption_type (google.cloud.spanner_admin_database_v1.types.CreateBackupEncryptionConfig.EncryptionType):
-            Required. The encryption type of the backup.
-        kms_key_name (str):
-            Optional. The Cloud KMS key that will be used to protect the
-            backup. This field should be set only when
-            [encryption_type][google.spanner.admin.database.v1.CreateBackupEncryptionConfig.encryption_type]
-            is ``CUSTOMER_MANAGED_ENCRYPTION``. Values are of the form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-        kms_key_names (MutableSequence[str]):
-            Optional. Specifies the KMS configuration for the one or
-            more keys used to protect the backup. Values are of the form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-
-            The keys referenced by kms_key_names must fully cover all
-            regions of the backup's instance configuration. Some
-            examples:
-
-            - For single region instance configs, specify a single
-              regional location KMS key.
-            - For multi-regional instance configs of type
-              GOOGLE_MANAGED, either specify a multi-regional location
-              KMS key or multiple regional location KMS keys that cover
-              all regions in the instance config.
-            - For an instance config of type USER_MANAGED, please
-              specify only regional location KMS keys to cover each
-              region in the instance config. Multi-regional location KMS
-              keys are not supported for USER_MANAGED instance configs.
-    """
-
-    class EncryptionType(proto.Enum):
-        r"""Encryption types for the backup.
-
-        Values:
-            ENCRYPTION_TYPE_UNSPECIFIED (0):
-                Unspecified. Do not use.
-            USE_DATABASE_ENCRYPTION (1):
-                Use the same encryption configuration as the database. This
-                is the default option when
-                [encryption_config][google.spanner.admin.database.v1.CreateBackupEncryptionConfig]
-                is empty. For example, if the database is using
-                ``Customer_Managed_Encryption``, the backup will be using
-                the same Cloud KMS key as the database.
-            GOOGLE_DEFAULT_ENCRYPTION (2):
-                Use Google default encryption.
-            CUSTOMER_MANAGED_ENCRYPTION (3):
-                Use customer managed encryption. If specified,
-                ``kms_key_name`` must contain a valid Cloud KMS key.
-        """
-        ENCRYPTION_TYPE_UNSPECIFIED = 0
-        USE_DATABASE_ENCRYPTION = 1
-        GOOGLE_DEFAULT_ENCRYPTION = 2
-        CUSTOMER_MANAGED_ENCRYPTION = 3
-
-    encryption_type: EncryptionType = proto.Field(
-        proto.ENUM,
-        number=1,
-        enum=EncryptionType,
-    )
-    kms_key_name: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    kms_key_names: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class CopyBackupEncryptionConfig(proto.Message):
-    r"""Encryption configuration for the copied backup.
-
-    Attributes:
-        encryption_type (google.cloud.spanner_admin_database_v1.types.CopyBackupEncryptionConfig.EncryptionType):
-            Required. The encryption type of the backup.
-        kms_key_name (str):
-            Optional. The Cloud KMS key that will be used to protect the
-            backup. This field should be set only when
-            [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type]
-            is ``CUSTOMER_MANAGED_ENCRYPTION``. Values are of the form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-        kms_key_names (MutableSequence[str]):
-            Optional. Specifies the KMS configuration for the one or
-            more keys used to protect the backup. Values are of the form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-            Kms keys specified can be in any order.
-
-            The keys referenced by kms_key_names must fully cover all
-            regions of the backup's instance configuration. Some
-            examples:
-
-            - For single region instance configs, specify a single
-              regional location KMS key.
-            - For multi-regional instance configs of type
-              GOOGLE_MANAGED, either specify a multi-regional location
-              KMS key or multiple regional location KMS keys that cover
-              all regions in the instance config.
-            - For an instance config of type USER_MANAGED, please
-              specify only regional location KMS keys to cover each
-              region in the instance config. Multi-regional location KMS
-              keys are not supported for USER_MANAGED instance configs.
-    """
-
-    class EncryptionType(proto.Enum):
-        r"""Encryption types for the backup.
-
-        Values:
-            ENCRYPTION_TYPE_UNSPECIFIED (0):
-                Unspecified. Do not use.
-            USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION (1):
-                This is the default option for
-                [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup]
-                when
-                [encryption_config][google.spanner.admin.database.v1.CopyBackupEncryptionConfig]
-                is not specified. For example, if the source backup is using
-                ``Customer_Managed_Encryption``, the backup will be using
-                the same Cloud KMS key as the source backup.
-            GOOGLE_DEFAULT_ENCRYPTION (2):
-                Use Google default encryption.
-            CUSTOMER_MANAGED_ENCRYPTION (3):
-                Use customer managed encryption. If specified, either
-                ``kms_key_name`` or ``kms_key_names`` must contain valid
-                Cloud KMS key(s).
-        """
-        ENCRYPTION_TYPE_UNSPECIFIED = 0
-        USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION = 1
-        GOOGLE_DEFAULT_ENCRYPTION = 2
-        CUSTOMER_MANAGED_ENCRYPTION = 3
-
-    encryption_type: EncryptionType = proto.Field(
-        proto.ENUM,
-        number=1,
-        enum=EncryptionType,
-    )
-    kms_key_name: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    kms_key_names: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class FullBackupSpec(proto.Message):
-    r"""The specification for full backups.
-    A full backup stores the entire contents of the database at a
-    given version time.
-
-    """
-
-
-class IncrementalBackupSpec(proto.Message):
-    r"""The specification for incremental backup chains.
-    An incremental backup stores the delta of changes between a
-    previous backup and the database contents at a given version
-    time. An incremental backup chain consists of a full backup and
-    zero or more successive incremental backups. The first backup
-    created for an incremental backup chain is always a full backup.
-
-    """
-
-
-class BackupInstancePartition(proto.Message):
-    r"""Instance partition information for the backup.
-
-    Attributes:
-        instance_partition (str):
-            A unique identifier for the instance partition. Values are
-            of the form
-            ``projects/<project>/instances/<instance>/instancePartitions/<instance_partition_id>``
-    """
-
-    instance_partition: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_admin_database_v1/types/backup_schedule.py b/google/cloud/spanner_admin_database_v1/types/backup_schedule.py
deleted file mode 100644
index 61eb050f34..0000000000
--- a/google/cloud/spanner_admin_database_v1/types/backup_schedule.py
+++ /dev/null
@@ -1,368 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import duration_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.types import backup
-
-__protobuf__ = proto.module(
-    package="google.spanner.admin.database.v1",
-    manifest={
-        "BackupScheduleSpec",
-        "BackupSchedule",
-        "CrontabSpec",
-        "CreateBackupScheduleRequest",
-        "GetBackupScheduleRequest",
-        "DeleteBackupScheduleRequest",
-        "ListBackupSchedulesRequest",
-        "ListBackupSchedulesResponse",
-        "UpdateBackupScheduleRequest",
-    },
-)
-
-
-class BackupScheduleSpec(proto.Message):
-    r"""Defines specifications of the backup schedule.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        cron_spec (google.cloud.spanner_admin_database_v1.types.CrontabSpec):
-            Cron style schedule specification.
-
-            This field is a member of `oneof`_ ``schedule_spec``.
-    """
-
-    cron_spec: "CrontabSpec" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        oneof="schedule_spec",
-        message="CrontabSpec",
-    )
-
-
-class BackupSchedule(proto.Message):
-    r"""BackupSchedule expresses the automated backup creation
-    specification for a Spanner database.
-    Next ID: 10
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        name (str):
-            Identifier. Output only for the
-            [CreateBackupSchedule][DatabaseAdmin.CreateBackupSchededule]
-            operation. Required for the
-            [UpdateBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackupSchedule]
-            operation. A globally unique identifier for the backup
-            schedule which cannot be changed. Values are of the form
-            ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/[a-z][a-z0-9_\-]*[a-z0-9]``
-            The final segment of the name must be between 2 and 60
-            characters in length.
-        spec (google.cloud.spanner_admin_database_v1.types.BackupScheduleSpec):
-            Optional. The schedule specification based on
-            which the backup creations are triggered.
-        retention_duration (google.protobuf.duration_pb2.Duration):
-            Optional. The retention duration of a backup
-            that must be at least 6 hours and at most 366
-            days. The backup is eligible to be automatically
-            deleted once the retention period has elapsed.
-        encryption_config (google.cloud.spanner_admin_database_v1.types.CreateBackupEncryptionConfig):
-            Optional. The encryption configuration that
-            will be used to encrypt the backup. If this
-            field is not specified, the backup will use the
-            same encryption configuration as the database.
-        full_backup_spec (google.cloud.spanner_admin_database_v1.types.FullBackupSpec):
-            The schedule creates only full backups.
-
-            This field is a member of `oneof`_ ``backup_type_spec``.
-        incremental_backup_spec (google.cloud.spanner_admin_database_v1.types.IncrementalBackupSpec):
-            The schedule creates incremental backup
-            chains.
-
-            This field is a member of `oneof`_ ``backup_type_spec``.
-        update_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The timestamp at which the
-            schedule was last updated. If the schedule has
-            never been updated, this field contains the
-            timestamp when the schedule was first created.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    spec: "BackupScheduleSpec" = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message="BackupScheduleSpec",
-    )
-    retention_duration: duration_pb2.Duration = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=duration_pb2.Duration,
-    )
-    encryption_config: backup.CreateBackupEncryptionConfig = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=backup.CreateBackupEncryptionConfig,
-    )
-    full_backup_spec: backup.FullBackupSpec = proto.Field(
-        proto.MESSAGE,
-        number=7,
-        oneof="backup_type_spec",
-        message=backup.FullBackupSpec,
-    )
-    incremental_backup_spec: backup.IncrementalBackupSpec = proto.Field(
-        proto.MESSAGE,
-        number=8,
-        oneof="backup_type_spec",
-        message=backup.IncrementalBackupSpec,
-    )
-    update_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=9,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class CrontabSpec(proto.Message):
-    r"""CrontabSpec can be used to specify the version time and
-    frequency at which the backup should be created.
-
-    Attributes:
-        text (str):
-            Required. Textual representation of the crontab. User can
-            customize the backup frequency and the backup version time
-            using the cron expression. The version time must be in UTC
-            timezone.
-
-            The backup will contain an externally consistent copy of the
-            database at the version time. Allowed frequencies are 12
-            hour, 1 day, 1 week and 1 month. Examples of valid cron
-            specifications:
-
-            - ``0 2/12 * * *`` : every 12 hours at (2, 14) hours past
-              midnight in UTC.
-            - ``0 2,14 * * *`` : every 12 hours at (2,14) hours past
-              midnight in UTC.
-            - ``0 2 * * *`` : once a day at 2 past midnight in UTC.
-            - ``0 2 * * 0`` : once a week every Sunday at 2 past
-              midnight in UTC.
-            - ``0 2 8 * *`` : once a month on 8th day at 2 past midnight
-              in UTC.
-        time_zone (str):
-            Output only. The time zone of the times in
-            ``CrontabSpec.text``. Currently only UTC is supported.
-        creation_window (google.protobuf.duration_pb2.Duration):
-            Output only. Schedule backups will contain an externally
-            consistent copy of the database at the version time
-            specified in ``schedule_spec.cron_spec``. However, Spanner
-            may not initiate the creation of the scheduled backups at
-            that version time. Spanner will initiate the creation of
-            scheduled backups within the time window bounded by the
-            version_time specified in ``schedule_spec.cron_spec`` and
-            version_time + ``creation_window``.
-    """
-
-    text: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    time_zone: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    creation_window: duration_pb2.Duration = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=duration_pb2.Duration,
-    )
-
-
-class CreateBackupScheduleRequest(proto.Message):
-    r"""The request for
-    [CreateBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackupSchedule].
-
-    Attributes:
-        parent (str):
-            Required. The name of the database that this
-            backup schedule applies to.
-        backup_schedule_id (str):
-            Required. The Id to use for the backup schedule. The
-            ``backup_schedule_id`` appended to ``parent`` forms the full
-            backup schedule name of the form
-            ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-        backup_schedule (google.cloud.spanner_admin_database_v1.types.BackupSchedule):
-            Required. The backup schedule to create.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    backup_schedule_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    backup_schedule: "BackupSchedule" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="BackupSchedule",
-    )
-
-
-class GetBackupScheduleRequest(proto.Message):
-    r"""The request for
-    [GetBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.GetBackupSchedule].
-
-    Attributes:
-        name (str):
-            Required. The name of the schedule to retrieve. Values are
-            of the form
-            ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class DeleteBackupScheduleRequest(proto.Message):
-    r"""The request for
-    [DeleteBackupSchedule][google.spanner.admin.database.v1.DatabaseAdmin.DeleteBackupSchedule].
-
-    Attributes:
-        name (str):
-            Required. The name of the schedule to delete. Values are of
-            the form
-            ``projects/<project>/instances/<instance>/databases/<database>/backupSchedules/<backup_schedule_id>``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class ListBackupSchedulesRequest(proto.Message):
-    r"""The request for
-    [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-
-    Attributes:
-        parent (str):
-            Required. Database is the parent resource
-            whose backup schedules should be listed. Values
-            are of the form
-            projects/<project>/instances/<instance>/databases/<database>
-        page_size (int):
-            Optional. Number of backup schedules to be
-            returned in the response. If 0 or less, defaults
-            to the server's maximum allowed page size.
-        page_token (str):
-            Optional. If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.database.v1.ListBackupSchedulesResponse.next_page_token]
-            from a previous
-            [ListBackupSchedulesResponse][google.spanner.admin.database.v1.ListBackupSchedulesResponse]
-            to the same ``parent``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=2,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-
-
-class ListBackupSchedulesResponse(proto.Message):
-    r"""The response for
-    [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules].
-
-    Attributes:
-        backup_schedules (MutableSequence[google.cloud.spanner_admin_database_v1.types.BackupSchedule]):
-            The list of backup schedules for a database.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListBackupSchedules][google.spanner.admin.database.v1.DatabaseAdmin.ListBackupSchedules]
-            call to fetch more of the schedules.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    backup_schedules: MutableSequence["BackupSchedule"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="BackupSchedule",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class UpdateBackupScheduleRequest(proto.Message):
-    r"""The request for
-    [UpdateBackupScheduleRequest][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackupSchedule].
-
-    Attributes:
-        backup_schedule (google.cloud.spanner_admin_database_v1.types.BackupSchedule):
-            Required. The backup schedule to update.
-            ``backup_schedule.name``, and the fields to be updated as
-            specified by ``update_mask`` are required. Other fields are
-            ignored.
-        update_mask (google.protobuf.field_mask_pb2.FieldMask):
-            Required. A mask specifying which fields in
-            the BackupSchedule resource should be updated.
-            This mask is relative to the BackupSchedule
-            resource, not to the request message. The field
-            mask must always be specified; this prevents any
-            future fields from being erased accidentally.
-    """
-
-    backup_schedule: "BackupSchedule" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="BackupSchedule",
-    )
-    update_mask: field_mask_pb2.FieldMask = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=field_mask_pb2.FieldMask,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_admin_database_v1/types/common.py b/google/cloud/spanner_admin_database_v1/types/common.py
deleted file mode 100644
index 5b52821754..0000000000
--- a/google/cloud/spanner_admin_database_v1/types/common.py
+++ /dev/null
@@ -1,178 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.rpc import status_pb2  # type: ignore
-import proto  # type: ignore
-
-__protobuf__ = proto.module(
-    package="google.spanner.admin.database.v1",
-    manifest={
-        "DatabaseDialect",
-        "OperationProgress",
-        "EncryptionConfig",
-        "EncryptionInfo",
-    },
-)
-
-
-class DatabaseDialect(proto.Enum):
-    r"""Indicates the dialect type of a database.
-
-    Values:
-        DATABASE_DIALECT_UNSPECIFIED (0):
-            Default value. This value will create a database with the
-            GOOGLE_STANDARD_SQL dialect.
-        GOOGLE_STANDARD_SQL (1):
-            GoogleSQL supported SQL.
-        POSTGRESQL (2):
-            PostgreSQL supported SQL.
-    """
-    DATABASE_DIALECT_UNSPECIFIED = 0
-    GOOGLE_STANDARD_SQL = 1
-    POSTGRESQL = 2
-
-
-class OperationProgress(proto.Message):
-    r"""Encapsulates progress related information for a Cloud Spanner
-    long running operation.
-
-    Attributes:
-        progress_percent (int):
-            Percent completion of the operation.
-            Values are between 0 and 100 inclusive.
-        start_time (google.protobuf.timestamp_pb2.Timestamp):
-            Time the request was received.
-        end_time (google.protobuf.timestamp_pb2.Timestamp):
-            If set, the time at which this operation
-            failed or was completed successfully.
-    """
-
-    progress_percent: int = proto.Field(
-        proto.INT32,
-        number=1,
-    )
-    start_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    end_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class EncryptionConfig(proto.Message):
-    r"""Encryption configuration for a Cloud Spanner database.
-
-    Attributes:
-        kms_key_name (str):
-            The Cloud KMS key to be used for encrypting and decrypting
-            the database. Values are of the form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-        kms_key_names (MutableSequence[str]):
-            Specifies the KMS configuration for the one or more keys
-            used to encrypt the database. Values are of the form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-
-            The keys referenced by kms_key_names must fully cover all
-            regions of the database instance configuration. Some
-            examples:
-
-            - For single region database instance configs, specify a
-              single regional location KMS key.
-            - For multi-regional database instance configs of type
-              GOOGLE_MANAGED, either specify a multi-regional location
-              KMS key or multiple regional location KMS keys that cover
-              all regions in the instance config.
-            - For a database instance config of type USER_MANAGED,
-              please specify only regional location KMS keys to cover
-              each region in the instance config. Multi-regional
-              location KMS keys are not supported for USER_MANAGED
-              instance configs.
-    """
-
-    kms_key_name: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    kms_key_names: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class EncryptionInfo(proto.Message):
-    r"""Encryption information for a Cloud Spanner database or
-    backup.
-
-    Attributes:
-        encryption_type (google.cloud.spanner_admin_database_v1.types.EncryptionInfo.Type):
-            Output only. The type of encryption.
-        encryption_status (google.rpc.status_pb2.Status):
-            Output only. If present, the status of a
-            recent encrypt/decrypt call on underlying data
-            for this database or backup. Regardless of
-            status, data is always encrypted at rest.
-        kms_key_version (str):
-            Output only. A Cloud KMS key version that is
-            being used to protect the database or backup.
-    """
-
-    class Type(proto.Enum):
-        r"""Possible encryption types.
-
-        Values:
-            TYPE_UNSPECIFIED (0):
-                Encryption type was not specified, though
-                data at rest remains encrypted.
-            GOOGLE_DEFAULT_ENCRYPTION (1):
-                The data is encrypted at rest with a key that
-                is fully managed by Google. No key version or
-                status will be populated. This is the default
-                state.
-            CUSTOMER_MANAGED_ENCRYPTION (2):
-                The data is encrypted at rest with a key that is managed by
-                the customer. The active version of the key.
-                ``kms_key_version`` will be populated, and
-                ``encryption_status`` may be populated.
-        """
-        TYPE_UNSPECIFIED = 0
-        GOOGLE_DEFAULT_ENCRYPTION = 1
-        CUSTOMER_MANAGED_ENCRYPTION = 2
-
-    encryption_type: Type = proto.Field(
-        proto.ENUM,
-        number=3,
-        enum=Type,
-    )
-    encryption_status: status_pb2.Status = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=status_pb2.Status,
-    )
-    kms_key_version: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_admin_database_v1/types/spanner_database_admin.py b/google/cloud/spanner_admin_database_v1/types/spanner_database_admin.py
deleted file mode 100644
index 129ab28572..0000000000
--- a/google/cloud/spanner_admin_database_v1/types/spanner_database_admin.py
+++ /dev/null
@@ -1,1348 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.rpc import status_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import common
-
-__protobuf__ = proto.module(
-    package="google.spanner.admin.database.v1",
-    manifest={
-        "RestoreSourceType",
-        "RestoreInfo",
-        "Database",
-        "ListDatabasesRequest",
-        "ListDatabasesResponse",
-        "CreateDatabaseRequest",
-        "CreateDatabaseMetadata",
-        "GetDatabaseRequest",
-        "UpdateDatabaseRequest",
-        "UpdateDatabaseMetadata",
-        "UpdateDatabaseDdlRequest",
-        "DdlStatementActionInfo",
-        "UpdateDatabaseDdlMetadata",
-        "DropDatabaseRequest",
-        "GetDatabaseDdlRequest",
-        "GetDatabaseDdlResponse",
-        "ListDatabaseOperationsRequest",
-        "ListDatabaseOperationsResponse",
-        "RestoreDatabaseRequest",
-        "RestoreDatabaseEncryptionConfig",
-        "RestoreDatabaseMetadata",
-        "OptimizeRestoredDatabaseMetadata",
-        "DatabaseRole",
-        "ListDatabaseRolesRequest",
-        "ListDatabaseRolesResponse",
-        "AddSplitPointsRequest",
-        "AddSplitPointsResponse",
-        "SplitPoints",
-        "InternalUpdateGraphOperationRequest",
-        "InternalUpdateGraphOperationResponse",
-    },
-)
-
-
-class RestoreSourceType(proto.Enum):
-    r"""Indicates the type of the restore source.
-
-    Values:
-        TYPE_UNSPECIFIED (0):
-            No restore associated.
-        BACKUP (1):
-            A backup was used as the source of the
-            restore.
-    """
-    TYPE_UNSPECIFIED = 0
-    BACKUP = 1
-
-
-class RestoreInfo(proto.Message):
-    r"""Information about the database restore.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        source_type (google.cloud.spanner_admin_database_v1.types.RestoreSourceType):
-            The type of the restore source.
-        backup_info (google.cloud.spanner_admin_database_v1.types.BackupInfo):
-            Information about the backup used to restore
-            the database. The backup may no longer exist.
-
-            This field is a member of `oneof`_ ``source_info``.
-    """
-
-    source_type: "RestoreSourceType" = proto.Field(
-        proto.ENUM,
-        number=1,
-        enum="RestoreSourceType",
-    )
-    backup_info: gsad_backup.BackupInfo = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        oneof="source_info",
-        message=gsad_backup.BackupInfo,
-    )
-
-
-class Database(proto.Message):
-    r"""A Cloud Spanner database.
-
-    Attributes:
-        name (str):
-            Required. The name of the database. Values are of the form
-            ``projects/<project>/instances/<instance>/databases/<database>``,
-            where ``<database>`` is as specified in the
-            ``CREATE DATABASE`` statement. This name can be passed to
-            other API methods to identify the database.
-        state (google.cloud.spanner_admin_database_v1.types.Database.State):
-            Output only. The current database state.
-        create_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. If exists, the time at which the
-            database creation started.
-        restore_info (google.cloud.spanner_admin_database_v1.types.RestoreInfo):
-            Output only. Applicable only for restored
-            databases. Contains information about the
-            restore source.
-        encryption_config (google.cloud.spanner_admin_database_v1.types.EncryptionConfig):
-            Output only. For databases that are using
-            customer managed encryption, this field contains
-            the encryption configuration for the database.
-            For databases that are using Google default or
-            other types of encryption, this field is empty.
-        encryption_info (MutableSequence[google.cloud.spanner_admin_database_v1.types.EncryptionInfo]):
-            Output only. For databases that are using customer managed
-            encryption, this field contains the encryption information
-            for the database, such as all Cloud KMS key versions that
-            are in use. The
-            ``encryption_status' field inside of each``\ EncryptionInfo\`
-            is not populated.
-
-            For databases that are using Google default or other types
-            of encryption, this field is empty.
-
-            This field is propagated lazily from the backend. There
-            might be a delay from when a key version is being used and
-            when it appears in this field.
-        version_retention_period (str):
-            Output only. The period in which Cloud Spanner retains all
-            versions of data for the database. This is the same as the
-            value of version_retention_period database option set using
-            [UpdateDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl].
-            Defaults to 1 hour, if not set.
-        earliest_version_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. Earliest timestamp at which
-            older versions of the data can be read. This
-            value is continuously updated by Cloud Spanner
-            and becomes stale the moment it is queried. If
-            you are using this value to recover data, make
-            sure to account for the time from the moment
-            when the value is queried to the moment when you
-            initiate the recovery.
-        default_leader (str):
-            Output only. The read-write region which contains the
-            database's leader replicas.
-
-            This is the same as the value of default_leader database
-            option set using DatabaseAdmin.CreateDatabase or
-            DatabaseAdmin.UpdateDatabaseDdl. If not explicitly set, this
-            is empty.
-        database_dialect (google.cloud.spanner_admin_database_v1.types.DatabaseDialect):
-            Output only. The dialect of the Cloud Spanner
-            Database.
-        enable_drop_protection (bool):
-            Whether drop protection is enabled for this database.
-            Defaults to false, if not set. For more details, please see
-            how to `prevent accidental database
-            deletion <https://cloud.google.com/spanner/docs/prevent-database-deletion>`__.
-        reconciling (bool):
-            Output only. If true, the database is being
-            updated. If false, there are no ongoing update
-            operations for the database.
-    """
-
-    class State(proto.Enum):
-        r"""Indicates the current state of the database.
-
-        Values:
-            STATE_UNSPECIFIED (0):
-                Not specified.
-            CREATING (1):
-                The database is still being created. Operations on the
-                database may fail with ``FAILED_PRECONDITION`` in this
-                state.
-            READY (2):
-                The database is fully created and ready for
-                use.
-            READY_OPTIMIZING (3):
-                The database is fully created and ready for use, but is
-                still being optimized for performance and cannot handle full
-                load.
-
-                In this state, the database still references the backup it
-                was restore from, preventing the backup from being deleted.
-                When optimizations are complete, the full performance of the
-                database will be restored, and the database will transition
-                to ``READY`` state.
-        """
-        STATE_UNSPECIFIED = 0
-        CREATING = 1
-        READY = 2
-        READY_OPTIMIZING = 3
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    state: State = proto.Field(
-        proto.ENUM,
-        number=2,
-        enum=State,
-    )
-    create_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    restore_info: "RestoreInfo" = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message="RestoreInfo",
-    )
-    encryption_config: common.EncryptionConfig = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=common.EncryptionConfig,
-    )
-    encryption_info: MutableSequence[common.EncryptionInfo] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=8,
-        message=common.EncryptionInfo,
-    )
-    version_retention_period: str = proto.Field(
-        proto.STRING,
-        number=6,
-    )
-    earliest_version_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=7,
-        message=timestamp_pb2.Timestamp,
-    )
-    default_leader: str = proto.Field(
-        proto.STRING,
-        number=9,
-    )
-    database_dialect: common.DatabaseDialect = proto.Field(
-        proto.ENUM,
-        number=10,
-        enum=common.DatabaseDialect,
-    )
-    enable_drop_protection: bool = proto.Field(
-        proto.BOOL,
-        number=11,
-    )
-    reconciling: bool = proto.Field(
-        proto.BOOL,
-        number=12,
-    )
-
-
-class ListDatabasesRequest(proto.Message):
-    r"""The request for
-    [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-
-    Attributes:
-        parent (str):
-            Required. The instance whose databases should be listed.
-            Values are of the form
-            ``projects/<project>/instances/<instance>``.
-        page_size (int):
-            Number of databases to be returned in the
-            response. If 0 or less, defaults to the server's
-            maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.database.v1.ListDatabasesResponse.next_page_token]
-            from a previous
-            [ListDatabasesResponse][google.spanner.admin.database.v1.ListDatabasesResponse].
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-
-
-class ListDatabasesResponse(proto.Message):
-    r"""The response for
-    [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases].
-
-    Attributes:
-        databases (MutableSequence[google.cloud.spanner_admin_database_v1.types.Database]):
-            Databases that matched the request.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListDatabases][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabases]
-            call to fetch more of the matching databases.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    databases: MutableSequence["Database"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="Database",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class CreateDatabaseRequest(proto.Message):
-    r"""The request for
-    [CreateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.CreateDatabase].
-
-    Attributes:
-        parent (str):
-            Required. The name of the instance that will serve the new
-            database. Values are of the form
-            ``projects/<project>/instances/<instance>``.
-        create_statement (str):
-            Required. A ``CREATE DATABASE`` statement, which specifies
-            the ID of the new database. The database ID must conform to
-            the regular expression ``[a-z][a-z0-9_\-]*[a-z0-9]`` and be
-            between 2 and 30 characters in length. If the database ID is
-            a reserved word or if it contains a hyphen, the database ID
-            must be enclosed in backticks (:literal:`\``).
-        extra_statements (MutableSequence[str]):
-            Optional. A list of DDL statements to run
-            inside the newly created database. Statements
-            can create tables, indexes, etc. These
-            statements execute atomically with the creation
-            of the database:
-
-            if there is an error in any statement, the
-            database is not created.
-        encryption_config (google.cloud.spanner_admin_database_v1.types.EncryptionConfig):
-            Optional. The encryption configuration for
-            the database. If this field is not specified,
-            Cloud Spanner will encrypt/decrypt all data at
-            rest using Google default encryption.
-        database_dialect (google.cloud.spanner_admin_database_v1.types.DatabaseDialect):
-            Optional. The dialect of the Cloud Spanner
-            Database.
-        proto_descriptors (bytes):
-            Optional. Proto descriptors used by CREATE/ALTER PROTO
-            BUNDLE statements in 'extra_statements' above. Contains a
-            protobuf-serialized
-            `google.protobuf.FileDescriptorSet <https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/descriptor.proto>`__.
-            To generate it,
-            `install <https://grpc.io/docs/protoc-installation/>`__ and
-            run ``protoc`` with --include_imports and
-            --descriptor_set_out. For example, to generate for
-            moon/shot/app.proto, run
-
-            ::
-
-               $protoc  --proto_path=/app_path --proto_path=/lib_path \
-                        --include_imports \
-                        --descriptor_set_out=descriptors.data \
-                        moon/shot/app.proto
-
-            For more details, see protobuffer `self
-            description <https://developers.google.com/protocol-buffers/docs/techniques#self-description>`__.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    create_statement: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    extra_statements: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-    encryption_config: common.EncryptionConfig = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=common.EncryptionConfig,
-    )
-    database_dialect: common.DatabaseDialect = proto.Field(
-        proto.ENUM,
-        number=5,
-        enum=common.DatabaseDialect,
-    )
-    proto_descriptors: bytes = proto.Field(
-        proto.BYTES,
-        number=6,
-    )
-
-
-class CreateDatabaseMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [CreateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.CreateDatabase].
-
-    Attributes:
-        database (str):
-            The database being created.
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class GetDatabaseRequest(proto.Message):
-    r"""The request for
-    [GetDatabase][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabase].
-
-    Attributes:
-        name (str):
-            Required. The name of the requested database. Values are of
-            the form
-            ``projects/<project>/instances/<instance>/databases/<database>``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class UpdateDatabaseRequest(proto.Message):
-    r"""The request for
-    [UpdateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabase].
-
-    Attributes:
-        database (google.cloud.spanner_admin_database_v1.types.Database):
-            Required. The database to update. The ``name`` field of the
-            database is of the form
-            ``projects/<project>/instances/<instance>/databases/<database>``.
-        update_mask (google.protobuf.field_mask_pb2.FieldMask):
-            Required. The list of fields to update. Currently, only
-            ``enable_drop_protection`` field can be updated.
-    """
-
-    database: "Database" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="Database",
-    )
-    update_mask: field_mask_pb2.FieldMask = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=field_mask_pb2.FieldMask,
-    )
-
-
-class UpdateDatabaseMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [UpdateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabase].
-
-    Attributes:
-        request (google.cloud.spanner_admin_database_v1.types.UpdateDatabaseRequest):
-            The request for
-            [UpdateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabase].
-        progress (google.cloud.spanner_admin_database_v1.types.OperationProgress):
-            The progress of the
-            [UpdateDatabase][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabase]
-            operation.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled. If set, this operation is in the
-            process of undoing itself (which is
-            best-effort).
-    """
-
-    request: "UpdateDatabaseRequest" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="UpdateDatabaseRequest",
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=common.OperationProgress,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class UpdateDatabaseDdlRequest(proto.Message):
-    r"""Enqueues the given DDL statements to be applied, in order but not
-    necessarily all at once, to the database schema at some point (or
-    points) in the future. The server checks that the statements are
-    executable (syntactically valid, name tables that exist, etc.)
-    before enqueueing them, but they may still fail upon later execution
-    (e.g., if a statement from another batch of statements is applied
-    first and it conflicts in some way, or if there is some data-related
-    problem like a ``NULL`` value in a column to which ``NOT NULL``
-    would be added). If a statement fails, all subsequent statements in
-    the batch are automatically cancelled.
-
-    Each batch of statements is assigned a name which can be used with
-    the [Operations][google.longrunning.Operations] API to monitor
-    progress. See the
-    [operation_id][google.spanner.admin.database.v1.UpdateDatabaseDdlRequest.operation_id]
-    field for more details.
-
-    Attributes:
-        database (str):
-            Required. The database to update.
-        statements (MutableSequence[str]):
-            Required. DDL statements to be applied to the
-            database.
-        operation_id (str):
-            If empty, the new update request is assigned an
-            automatically-generated operation ID. Otherwise,
-            ``operation_id`` is used to construct the name of the
-            resulting [Operation][google.longrunning.Operation].
-
-            Specifying an explicit operation ID simplifies determining
-            whether the statements were executed in the event that the
-            [UpdateDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl]
-            call is replayed, or the return value is otherwise lost: the
-            [database][google.spanner.admin.database.v1.UpdateDatabaseDdlRequest.database]
-            and ``operation_id`` fields can be combined to form the
-            [name][google.longrunning.Operation.name] of the resulting
-            [longrunning.Operation][google.longrunning.Operation]:
-            ``<database>/operations/<operation_id>``.
-
-            ``operation_id`` should be unique within the database, and
-            must be a valid identifier: ``[a-z][a-z0-9_]*``. Note that
-            automatically-generated operation IDs always begin with an
-            underscore. If the named operation already exists,
-            [UpdateDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl]
-            returns ``ALREADY_EXISTS``.
-        proto_descriptors (bytes):
-            Optional. Proto descriptors used by CREATE/ALTER PROTO
-            BUNDLE statements. Contains a protobuf-serialized
-            `google.protobuf.FileDescriptorSet <https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/descriptor.proto>`__.
-            To generate it,
-            `install <https://grpc.io/docs/protoc-installation/>`__ and
-            run ``protoc`` with --include_imports and
-            --descriptor_set_out. For example, to generate for
-            moon/shot/app.proto, run
-
-            ::
-
-               $protoc  --proto_path=/app_path --proto_path=/lib_path \
-                        --include_imports \
-                        --descriptor_set_out=descriptors.data \
-                        moon/shot/app.proto
-
-            For more details, see protobuffer `self
-            description <https://developers.google.com/protocol-buffers/docs/techniques#self-description>`__.
-        throughput_mode (bool):
-            Optional. This field is exposed to be used by the Spanner
-            Migration Tool. For more details, see
-            `SMT <https://github.com/GoogleCloudPlatform/spanner-migration-tool>`__.
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    statements: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=2,
-    )
-    operation_id: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    proto_descriptors: bytes = proto.Field(
-        proto.BYTES,
-        number=4,
-    )
-    throughput_mode: bool = proto.Field(
-        proto.BOOL,
-        number=5,
-    )
-
-
-class DdlStatementActionInfo(proto.Message):
-    r"""Action information extracted from a DDL statement. This proto is
-    used to display the brief info of the DDL statement for the
-    operation
-    [UpdateDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl].
-
-    Attributes:
-        action (str):
-            The action for the DDL statement, e.g.
-            CREATE, ALTER, DROP, GRANT, etc. This field is a
-            non-empty string.
-        entity_type (str):
-            The entity type for the DDL statement, e.g. TABLE, INDEX,
-            VIEW, etc. This field can be empty string for some DDL
-            statement, e.g. for statement "ANALYZE", ``entity_type`` =
-            "".
-        entity_names (MutableSequence[str]):
-            The entity name(s) being operated on the DDL statement. E.g.
-
-            1. For statement "CREATE TABLE t1(...)", ``entity_names`` =
-               ["t1"].
-            2. For statement "GRANT ROLE r1, r2 ...", ``entity_names`` =
-               ["r1", "r2"].
-            3. For statement "ANALYZE", ``entity_names`` = [].
-    """
-
-    action: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    entity_type: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    entity_names: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class UpdateDatabaseDdlMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [UpdateDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl].
-
-    Attributes:
-        database (str):
-            The database being modified.
-        statements (MutableSequence[str]):
-            For an update this list contains all the
-            statements. For an individual statement, this
-            list contains only that statement.
-        commit_timestamps (MutableSequence[google.protobuf.timestamp_pb2.Timestamp]):
-            Reports the commit timestamps of all statements that have
-            succeeded so far, where ``commit_timestamps[i]`` is the
-            commit timestamp for the statement ``statements[i]``.
-        throttled (bool):
-            Output only. When true, indicates that the
-            operation is throttled e.g. due to resource
-            constraints. When resources become available the
-            operation will resume and this field will be
-            false again.
-        progress (MutableSequence[google.cloud.spanner_admin_database_v1.types.OperationProgress]):
-            The progress of the
-            [UpdateDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl]
-            operations. All DDL statements will have continuously
-            updating progress, and ``progress[i]`` is the operation
-            progress for ``statements[i]``. Also, ``progress[i]`` will
-            have start time and end time populated with commit timestamp
-            of operation, as well as a progress of 100% once the
-            operation has completed.
-        actions (MutableSequence[google.cloud.spanner_admin_database_v1.types.DdlStatementActionInfo]):
-            The brief action info for the DDL statements. ``actions[i]``
-            is the brief info for ``statements[i]``.
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    statements: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=2,
-    )
-    commit_timestamps: MutableSequence[timestamp_pb2.Timestamp] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    throttled: bool = proto.Field(
-        proto.BOOL,
-        number=4,
-    )
-    progress: MutableSequence[common.OperationProgress] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=5,
-        message=common.OperationProgress,
-    )
-    actions: MutableSequence["DdlStatementActionInfo"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=6,
-        message="DdlStatementActionInfo",
-    )
-
-
-class DropDatabaseRequest(proto.Message):
-    r"""The request for
-    [DropDatabase][google.spanner.admin.database.v1.DatabaseAdmin.DropDatabase].
-
-    Attributes:
-        database (str):
-            Required. The database to be dropped.
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class GetDatabaseDdlRequest(proto.Message):
-    r"""The request for
-    [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-
-    Attributes:
-        database (str):
-            Required. The database whose schema we wish to get. Values
-            are of the form
-            ``projects/<project>/instances/<instance>/databases/<database>``
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class GetDatabaseDdlResponse(proto.Message):
-    r"""The response for
-    [GetDatabaseDdl][google.spanner.admin.database.v1.DatabaseAdmin.GetDatabaseDdl].
-
-    Attributes:
-        statements (MutableSequence[str]):
-            A list of formatted DDL statements defining
-            the schema of the database specified in the
-            request.
-        proto_descriptors (bytes):
-            Proto descriptors stored in the database. Contains a
-            protobuf-serialized
-            `google.protobuf.FileDescriptorSet <https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/descriptor.proto>`__.
-            For more details, see protobuffer `self
-            description <https://developers.google.com/protocol-buffers/docs/techniques#self-description>`__.
-    """
-
-    statements: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=1,
-    )
-    proto_descriptors: bytes = proto.Field(
-        proto.BYTES,
-        number=2,
-    )
-
-
-class ListDatabaseOperationsRequest(proto.Message):
-    r"""The request for
-    [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-
-    Attributes:
-        parent (str):
-            Required. The instance of the database operations. Values
-            are of the form ``projects/<project>/instances/<instance>``.
-        filter (str):
-            An expression that filters the list of returned operations.
-
-            A filter expression consists of a field name, a comparison
-            operator, and a value for filtering. The value must be a
-            string, a number, or a boolean. The comparison operator must
-            be one of: ``<``, ``>``, ``<=``, ``>=``, ``!=``, ``=``, or
-            ``:``. Colon ``:`` is the contains operator. Filter rules
-            are not case sensitive.
-
-            The following fields in the
-            [Operation][google.longrunning.Operation] are eligible for
-            filtering:
-
-            - ``name`` - The name of the long-running operation
-            - ``done`` - False if the operation is in progress, else
-              true.
-            - ``metadata.@type`` - the type of metadata. For example,
-              the type string for
-              [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata]
-              is
-              ``type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata``.
-            - ``metadata.<field_name>`` - any field in metadata.value.
-              ``metadata.@type`` must be specified first, if filtering
-              on metadata fields.
-            - ``error`` - Error associated with the long-running
-              operation.
-            - ``response.@type`` - the type of response.
-            - ``response.<field_name>`` - any field in response.value.
-
-            You can combine multiple expressions by enclosing each
-            expression in parentheses. By default, expressions are
-            combined with AND logic. However, you can specify AND, OR,
-            and NOT logic explicitly.
-
-            Here are a few examples:
-
-            - ``done:true`` - The operation is complete.
-            - ``(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata) AND``
-              ``(metadata.source_type:BACKUP) AND``
-              ``(metadata.backup_info.backup:backup_howl) AND``
-              ``(metadata.name:restored_howl) AND``
-              ``(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND``
-              ``(error:*)`` - Return operations where:
-
-              - The operation's metadata type is
-                [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata].
-              - The database is restored from a backup.
-              - The backup name contains "backup_howl".
-              - The restored database's name contains "restored_howl".
-              - The operation started before 2018-03-28T14:50:00Z.
-              - The operation resulted in an error.
-        page_size (int):
-            Number of operations to be returned in the
-            response. If 0 or less, defaults to the server's
-            maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.database.v1.ListDatabaseOperationsResponse.next_page_token]
-            from a previous
-            [ListDatabaseOperationsResponse][google.spanner.admin.database.v1.ListDatabaseOperationsResponse]
-            to the same ``parent`` and with the same ``filter``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    filter: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-
-
-class ListDatabaseOperationsResponse(proto.Message):
-    r"""The response for
-    [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations].
-
-    Attributes:
-        operations (MutableSequence[google.longrunning.operations_pb2.Operation]):
-            The list of matching database [long-running
-            operations][google.longrunning.Operation]. Each operation's
-            name will be prefixed by the database's name. The
-            operation's
-            [metadata][google.longrunning.Operation.metadata] field type
-            ``metadata.type_url`` describes the type of the metadata.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListDatabaseOperations][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseOperations]
-            call to fetch more of the matching metadata.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    operations: MutableSequence[operations_pb2.Operation] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=operations_pb2.Operation,
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class RestoreDatabaseRequest(proto.Message):
-    r"""The request for
-    [RestoreDatabase][google.spanner.admin.database.v1.DatabaseAdmin.RestoreDatabase].
-
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        parent (str):
-            Required. The name of the instance in which to create the
-            restored database. This instance must be in the same project
-            and have the same instance configuration as the instance
-            containing the source backup. Values are of the form
-            ``projects/<project>/instances/<instance>``.
-        database_id (str):
-            Required. The id of the database to create and restore to.
-            This database must not already exist. The ``database_id``
-            appended to ``parent`` forms the full database name of the
-            form
-            ``projects/<project>/instances/<instance>/databases/<database_id>``.
-        backup (str):
-            Name of the backup from which to restore. Values are of the
-            form
-            ``projects/<project>/instances/<instance>/backups/<backup>``.
-
-            This field is a member of `oneof`_ ``source``.
-        encryption_config (google.cloud.spanner_admin_database_v1.types.RestoreDatabaseEncryptionConfig):
-            Optional. An encryption configuration describing the
-            encryption type and key resources in Cloud KMS used to
-            encrypt/decrypt the database to restore to. If this field is
-            not specified, the restored database will use the same
-            encryption configuration as the backup by default, namely
-            [encryption_type][google.spanner.admin.database.v1.RestoreDatabaseEncryptionConfig.encryption_type]
-            = ``USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    database_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    backup: str = proto.Field(
-        proto.STRING,
-        number=3,
-        oneof="source",
-    )
-    encryption_config: "RestoreDatabaseEncryptionConfig" = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message="RestoreDatabaseEncryptionConfig",
-    )
-
-
-class RestoreDatabaseEncryptionConfig(proto.Message):
-    r"""Encryption configuration for the restored database.
-
-    Attributes:
-        encryption_type (google.cloud.spanner_admin_database_v1.types.RestoreDatabaseEncryptionConfig.EncryptionType):
-            Required. The encryption type of the restored
-            database.
-        kms_key_name (str):
-            Optional. The Cloud KMS key that will be used to
-            encrypt/decrypt the restored database. This field should be
-            set only when
-            [encryption_type][google.spanner.admin.database.v1.RestoreDatabaseEncryptionConfig.encryption_type]
-            is ``CUSTOMER_MANAGED_ENCRYPTION``. Values are of the form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-        kms_key_names (MutableSequence[str]):
-            Optional. Specifies the KMS configuration for the one or
-            more keys used to encrypt the database. Values are of the
-            form
-            ``projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>``.
-
-            The keys referenced by kms_key_names must fully cover all
-            regions of the database instance configuration. Some
-            examples:
-
-            - For single region database instance configs, specify a
-              single regional location KMS key.
-            - For multi-regional database instance configs of type
-              GOOGLE_MANAGED, either specify a multi-regional location
-              KMS key or multiple regional location KMS keys that cover
-              all regions in the instance config.
-            - For a database instance config of type USER_MANAGED,
-              please specify only regional location KMS keys to cover
-              each region in the instance config. Multi-regional
-              location KMS keys are not supported for USER_MANAGED
-              instance configs.
-    """
-
-    class EncryptionType(proto.Enum):
-        r"""Encryption types for the database to be restored.
-
-        Values:
-            ENCRYPTION_TYPE_UNSPECIFIED (0):
-                Unspecified. Do not use.
-            USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION (1):
-                This is the default option when
-                [encryption_config][google.spanner.admin.database.v1.RestoreDatabaseEncryptionConfig]
-                is not specified.
-            GOOGLE_DEFAULT_ENCRYPTION (2):
-                Use Google default encryption.
-            CUSTOMER_MANAGED_ENCRYPTION (3):
-                Use customer managed encryption. If specified,
-                ``kms_key_name`` must must contain a valid Cloud KMS key.
-        """
-        ENCRYPTION_TYPE_UNSPECIFIED = 0
-        USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION = 1
-        GOOGLE_DEFAULT_ENCRYPTION = 2
-        CUSTOMER_MANAGED_ENCRYPTION = 3
-
-    encryption_type: EncryptionType = proto.Field(
-        proto.ENUM,
-        number=1,
-        enum=EncryptionType,
-    )
-    kms_key_name: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    kms_key_names: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class RestoreDatabaseMetadata(proto.Message):
-    r"""Metadata type for the long-running operation returned by
-    [RestoreDatabase][google.spanner.admin.database.v1.DatabaseAdmin.RestoreDatabase].
-
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        name (str):
-            Name of the database being created and
-            restored to.
-        source_type (google.cloud.spanner_admin_database_v1.types.RestoreSourceType):
-            The type of the restore source.
-        backup_info (google.cloud.spanner_admin_database_v1.types.BackupInfo):
-            Information about the backup used to restore
-            the database.
-
-            This field is a member of `oneof`_ ``source_info``.
-        progress (google.cloud.spanner_admin_database_v1.types.OperationProgress):
-            The progress of the
-            [RestoreDatabase][google.spanner.admin.database.v1.DatabaseAdmin.RestoreDatabase]
-            operation.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which cancellation of this operation was
-            received.
-            [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
-            starts asynchronous cancellation on a long-running
-            operation. The server makes a best effort to cancel the
-            operation, but success is not guaranteed. Clients can use
-            [Operations.GetOperation][google.longrunning.Operations.GetOperation]
-            or other methods to check whether the cancellation succeeded
-            or whether the operation completed despite cancellation. On
-            successful cancellation, the operation is not deleted;
-            instead, it becomes an operation with an
-            [Operation.error][google.longrunning.Operation.error] value
-            with a [google.rpc.Status.code][google.rpc.Status.code] of
-            1, corresponding to ``Code.CANCELLED``.
-        optimize_database_operation_name (str):
-            If exists, the name of the long-running operation that will
-            be used to track the post-restore optimization process to
-            optimize the performance of the restored database, and
-            remove the dependency on the restore source. The name is of
-            the form
-            ``projects/<project>/instances/<instance>/databases/<database>/operations/<operation>``
-            where the is the name of database being created and restored
-            to. The metadata type of the long-running operation is
-            [OptimizeRestoredDatabaseMetadata][google.spanner.admin.database.v1.OptimizeRestoredDatabaseMetadata].
-            This long-running operation will be automatically created by
-            the system after the RestoreDatabase long-running operation
-            completes successfully. This operation will not be created
-            if the restore was not successful.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    source_type: "RestoreSourceType" = proto.Field(
-        proto.ENUM,
-        number=2,
-        enum="RestoreSourceType",
-    )
-    backup_info: gsad_backup.BackupInfo = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        oneof="source_info",
-        message=gsad_backup.BackupInfo,
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=common.OperationProgress,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=timestamp_pb2.Timestamp,
-    )
-    optimize_database_operation_name: str = proto.Field(
-        proto.STRING,
-        number=6,
-    )
-
-
-class OptimizeRestoredDatabaseMetadata(proto.Message):
-    r"""Metadata type for the long-running operation used to track
-    the progress of optimizations performed on a newly restored
-    database. This long-running operation is automatically created
-    by the system after the successful completion of a database
-    restore, and cannot be cancelled.
-
-    Attributes:
-        name (str):
-            Name of the restored database being
-            optimized.
-        progress (google.cloud.spanner_admin_database_v1.types.OperationProgress):
-            The progress of the post-restore
-            optimizations.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=common.OperationProgress,
-    )
-
-
-class DatabaseRole(proto.Message):
-    r"""A Cloud Spanner database role.
-
-    Attributes:
-        name (str):
-            Required. The name of the database role. Values are of the
-            form
-            ``projects/<project>/instances/<instance>/databases/<database>/databaseRoles/<role>``
-            where ``<role>`` is as specified in the ``CREATE ROLE`` DDL
-            statement.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class ListDatabaseRolesRequest(proto.Message):
-    r"""The request for
-    [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-
-    Attributes:
-        parent (str):
-            Required. The database whose roles should be listed. Values
-            are of the form
-            ``projects/<project>/instances/<instance>/databases/<database>``.
-        page_size (int):
-            Number of database roles to be returned in
-            the response. If 0 or less, defaults to the
-            server's maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.database.v1.ListDatabaseRolesResponse.next_page_token]
-            from a previous
-            [ListDatabaseRolesResponse][google.spanner.admin.database.v1.ListDatabaseRolesResponse].
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=2,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-
-
-class ListDatabaseRolesResponse(proto.Message):
-    r"""The response for
-    [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles].
-
-    Attributes:
-        database_roles (MutableSequence[google.cloud.spanner_admin_database_v1.types.DatabaseRole]):
-            Database roles that matched the request.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListDatabaseRoles][google.spanner.admin.database.v1.DatabaseAdmin.ListDatabaseRoles]
-            call to fetch more of the matching roles.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    database_roles: MutableSequence["DatabaseRole"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="DatabaseRole",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class AddSplitPointsRequest(proto.Message):
-    r"""The request for
-    [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-
-    Attributes:
-        database (str):
-            Required. The database on whose tables/indexes split points
-            are to be added. Values are of the form
-            ``projects/<project>/instances/<instance>/databases/<database>``.
-        split_points (MutableSequence[google.cloud.spanner_admin_database_v1.types.SplitPoints]):
-            Required. The split points to add.
-        initiator (str):
-            Optional. A user-supplied tag associated with the split
-            points. For example, "intital_data_load", "special_event_1".
-            Defaults to "CloudAddSplitPointsAPI" if not specified. The
-            length of the tag must not exceed 50 characters,else will be
-            trimmed. Only valid UTF8 characters are allowed.
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    split_points: MutableSequence["SplitPoints"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=2,
-        message="SplitPoints",
-    )
-    initiator: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-
-
-class AddSplitPointsResponse(proto.Message):
-    r"""The response for
-    [AddSplitPoints][google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints].
-
-    """
-
-
-class SplitPoints(proto.Message):
-    r"""The split points of a table/index.
-
-    Attributes:
-        table (str):
-            The table to split.
-        index (str):
-            The index to split. If specified, the ``table`` field must
-            refer to the index's base table.
-        keys (MutableSequence[google.cloud.spanner_admin_database_v1.types.SplitPoints.Key]):
-            Required. The list of split keys, i.e., the
-            split boundaries.
-        expire_time (google.protobuf.timestamp_pb2.Timestamp):
-            Optional. The expiration timestamp of the
-            split points. A timestamp in the past means
-            immediate expiration. The maximum value can be
-            30 days in the future. Defaults to 10 days in
-            the future if not specified.
-    """
-
-    class Key(proto.Message):
-        r"""A split key.
-
-        Attributes:
-            key_parts (google.protobuf.struct_pb2.ListValue):
-                Required. The column values making up the
-                split key.
-        """
-
-        key_parts: struct_pb2.ListValue = proto.Field(
-            proto.MESSAGE,
-            number=1,
-            message=struct_pb2.ListValue,
-        )
-
-    table: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    index: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    keys: MutableSequence[Key] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=3,
-        message=Key,
-    )
-    expire_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class InternalUpdateGraphOperationRequest(proto.Message):
-    r"""Internal request proto, do not use directly.
-
-    Attributes:
-        database (str):
-            Internal field, do not use directly.
-        operation_id (str):
-            Internal field, do not use directly.
-        vm_identity_token (str):
-            Internal field, do not use directly.
-        progress (float):
-            Internal field, do not use directly.
-        status (google.rpc.status_pb2.Status):
-            Internal field, do not use directly.
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    operation_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    vm_identity_token: str = proto.Field(
-        proto.STRING,
-        number=5,
-    )
-    progress: float = proto.Field(
-        proto.DOUBLE,
-        number=3,
-    )
-    status: status_pb2.Status = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message=status_pb2.Status,
-    )
-
-
-class InternalUpdateGraphOperationResponse(proto.Message):
-    r"""Internal response proto, do not use directly."""
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_admin_instance_v1/__init__.py b/google/cloud/spanner_admin_instance_v1/__init__.py
deleted file mode 100644
index 367dc9a08a..0000000000
--- a/google/cloud/spanner_admin_instance_v1/__init__.py
+++ /dev/null
@@ -1,212 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import sys
-
-import google.api_core as api_core
-
-from google.cloud.spanner_admin_instance_v1 import gapic_version as package_version
-
-__version__ = package_version.__version__
-
-if sys.version_info >= (3, 8):  # pragma: NO COVER
-    from importlib import metadata
-else:  # pragma: NO COVER
-    # TODO(https://github.com/googleapis/python-api-core/issues/835): Remove
-    # this code path once we drop support for Python 3.7
-    import importlib_metadata as metadata
-
-from .services.instance_admin import InstanceAdminAsyncClient, InstanceAdminClient
-from .types.common import FulfillmentPeriod, OperationProgress, ReplicaSelection
-from .types.spanner_instance_admin import (
-    AutoscalingConfig,
-    CreateInstanceConfigMetadata,
-    CreateInstanceConfigRequest,
-    CreateInstanceMetadata,
-    CreateInstancePartitionMetadata,
-    CreateInstancePartitionRequest,
-    CreateInstanceRequest,
-    DeleteInstanceConfigRequest,
-    DeleteInstancePartitionRequest,
-    DeleteInstanceRequest,
-    FreeInstanceMetadata,
-    GetInstanceConfigRequest,
-    GetInstancePartitionRequest,
-    GetInstanceRequest,
-    Instance,
-    InstanceConfig,
-    InstancePartition,
-    ListInstanceConfigOperationsRequest,
-    ListInstanceConfigOperationsResponse,
-    ListInstanceConfigsRequest,
-    ListInstanceConfigsResponse,
-    ListInstancePartitionOperationsRequest,
-    ListInstancePartitionOperationsResponse,
-    ListInstancePartitionsRequest,
-    ListInstancePartitionsResponse,
-    ListInstancesRequest,
-    ListInstancesResponse,
-    MoveInstanceMetadata,
-    MoveInstanceRequest,
-    MoveInstanceResponse,
-    ReplicaComputeCapacity,
-    ReplicaInfo,
-    UpdateInstanceConfigMetadata,
-    UpdateInstanceConfigRequest,
-    UpdateInstanceMetadata,
-    UpdateInstancePartitionMetadata,
-    UpdateInstancePartitionRequest,
-    UpdateInstanceRequest,
-)
-
-if hasattr(api_core, "check_python_version") and hasattr(
-    api_core, "check_dependency_versions"
-):  # pragma: NO COVER
-    api_core.check_python_version("google.cloud.spanner_admin_instance_v1")  # type: ignore
-    api_core.check_dependency_versions("google.cloud.spanner_admin_instance_v1")  # type: ignore
-else:  # pragma: NO COVER
-    # An older version of api_core is installed which does not define the
-    # functions above. We do equivalent checks manually.
-    try:
-        import sys
-        import warnings
-
-        _py_version_str = sys.version.split()[0]
-        _package_label = "google.cloud.spanner_admin_instance_v1"
-        if sys.version_info < (3, 9):
-            warnings.warn(
-                "You are using a non-supported Python version "
-                + f"({_py_version_str}).  Google will not post any further "
-                + f"updates to {_package_label} supporting this Python version. "
-                + "Please upgrade to the latest Python version, or at "
-                + f"least to Python 3.9, and then update {_package_label}.",
-                FutureWarning,
-            )
-        if sys.version_info[:2] == (3, 9):
-            warnings.warn(
-                f"You are using a Python version ({_py_version_str}) "
-                + f"which Google will stop supporting in {_package_label} in "
-                + "January 2026. Please "
-                + "upgrade to the latest Python version, or at "
-                + "least to Python 3.10, before then, and "
-                + f"then update {_package_label}.",
-                FutureWarning,
-            )
-
-        def parse_version_to_tuple(version_string: str):
-            """Safely converts a semantic version string to a comparable tuple of integers.
-            Example: "4.25.8" -> (4, 25, 8)
-            Ignores non-numeric parts and handles common version formats.
-            Args:
-                version_string: Version string in the format "x.y.z" or "x.y.z<suffix>"
-            Returns:
-                Tuple of integers for the parsed version string.
-            """
-            parts = []
-            for part in version_string.split("."):
-                try:
-                    parts.append(int(part))
-                except ValueError:
-                    # If it's a non-numeric part (e.g., '1.0.0b1' -> 'b1'), stop here.
-                    # This is a simplification compared to 'packaging.parse_version', but sufficient
-                    # for comparing strictly numeric semantic versions.
-                    break
-            return tuple(parts)
-
-        def _get_version(dependency_name):
-            try:
-                version_string: str = metadata.version(dependency_name)
-                parsed_version = parse_version_to_tuple(version_string)
-                return (parsed_version, version_string)
-            except Exception:
-                # Catch exceptions from metadata.version() (e.g., PackageNotFoundError)
-                # or errors during parse_version_to_tuple
-                return (None, "--")
-
-        _dependency_package = "google.protobuf"
-        _next_supported_version = "4.25.8"
-        _next_supported_version_tuple = (4, 25, 8)
-        _recommendation = " (we recommend 6.x)"
-        (_version_used, _version_used_string) = _get_version(_dependency_package)
-        if _version_used and _version_used < _next_supported_version_tuple:
-            warnings.warn(
-                f"Package {_package_label} depends on "
-                + f"{_dependency_package}, currently installed at version "
-                + f"{_version_used_string}. Future updates to "
-                + f"{_package_label} will require {_dependency_package} at "
-                + f"version {_next_supported_version} or higher{_recommendation}."
-                + " Please ensure "
-                + "that either (a) your Python environment doesn't pin the "
-                + f"version of {_dependency_package}, so that updates to "
-                + f"{_package_label} can require the higher version, or "
-                + "(b) you manually update your Python environment to use at "
-                + f"least version {_next_supported_version} of "
-                + f"{_dependency_package}.",
-                FutureWarning,
-            )
-    except Exception:
-        warnings.warn(
-            "Could not determine the version of Python "
-            + "currently being used. To continue receiving "
-            + "updates for {_package_label}, ensure you are "
-            + "using a supported version of Python; see "
-            + "https://devguide.python.org/versions/"
-        )
-
-__all__ = (
-    "InstanceAdminAsyncClient",
-    "AutoscalingConfig",
-    "CreateInstanceConfigMetadata",
-    "CreateInstanceConfigRequest",
-    "CreateInstanceMetadata",
-    "CreateInstancePartitionMetadata",
-    "CreateInstancePartitionRequest",
-    "CreateInstanceRequest",
-    "DeleteInstanceConfigRequest",
-    "DeleteInstancePartitionRequest",
-    "DeleteInstanceRequest",
-    "FreeInstanceMetadata",
-    "FulfillmentPeriod",
-    "GetInstanceConfigRequest",
-    "GetInstancePartitionRequest",
-    "GetInstanceRequest",
-    "Instance",
-    "InstanceAdminClient",
-    "InstanceConfig",
-    "InstancePartition",
-    "ListInstanceConfigOperationsRequest",
-    "ListInstanceConfigOperationsResponse",
-    "ListInstanceConfigsRequest",
-    "ListInstanceConfigsResponse",
-    "ListInstancePartitionOperationsRequest",
-    "ListInstancePartitionOperationsResponse",
-    "ListInstancePartitionsRequest",
-    "ListInstancePartitionsResponse",
-    "ListInstancesRequest",
-    "ListInstancesResponse",
-    "MoveInstanceMetadata",
-    "MoveInstanceRequest",
-    "MoveInstanceResponse",
-    "OperationProgress",
-    "ReplicaComputeCapacity",
-    "ReplicaInfo",
-    "ReplicaSelection",
-    "UpdateInstanceConfigMetadata",
-    "UpdateInstanceConfigRequest",
-    "UpdateInstanceMetadata",
-    "UpdateInstancePartitionMetadata",
-    "UpdateInstancePartitionRequest",
-    "UpdateInstanceRequest",
-)
diff --git a/google/cloud/spanner_admin_instance_v1/gapic_metadata.json b/google/cloud/spanner_admin_instance_v1/gapic_metadata.json
deleted file mode 100644
index 60fa46718a..0000000000
--- a/google/cloud/spanner_admin_instance_v1/gapic_metadata.json
+++ /dev/null
@@ -1,343 +0,0 @@
- {
-  "comment": "This file maps proto services/RPCs to the corresponding library clients/methods",
-  "language": "python",
-  "libraryPackage": "google.cloud.spanner_admin_instance_v1",
-  "protoPackage": "google.spanner.admin.instance.v1",
-  "schema": "1.0",
-  "services": {
-    "InstanceAdmin": {
-      "clients": {
-        "grpc": {
-          "libraryClient": "InstanceAdminClient",
-          "rpcs": {
-            "CreateInstance": {
-              "methods": [
-                "create_instance"
-              ]
-            },
-            "CreateInstanceConfig": {
-              "methods": [
-                "create_instance_config"
-              ]
-            },
-            "CreateInstancePartition": {
-              "methods": [
-                "create_instance_partition"
-              ]
-            },
-            "DeleteInstance": {
-              "methods": [
-                "delete_instance"
-              ]
-            },
-            "DeleteInstanceConfig": {
-              "methods": [
-                "delete_instance_config"
-              ]
-            },
-            "DeleteInstancePartition": {
-              "methods": [
-                "delete_instance_partition"
-              ]
-            },
-            "GetIamPolicy": {
-              "methods": [
-                "get_iam_policy"
-              ]
-            },
-            "GetInstance": {
-              "methods": [
-                "get_instance"
-              ]
-            },
-            "GetInstanceConfig": {
-              "methods": [
-                "get_instance_config"
-              ]
-            },
-            "GetInstancePartition": {
-              "methods": [
-                "get_instance_partition"
-              ]
-            },
-            "ListInstanceConfigOperations": {
-              "methods": [
-                "list_instance_config_operations"
-              ]
-            },
-            "ListInstanceConfigs": {
-              "methods": [
-                "list_instance_configs"
-              ]
-            },
-            "ListInstancePartitionOperations": {
-              "methods": [
-                "list_instance_partition_operations"
-              ]
-            },
-            "ListInstancePartitions": {
-              "methods": [
-                "list_instance_partitions"
-              ]
-            },
-            "ListInstances": {
-              "methods": [
-                "list_instances"
-              ]
-            },
-            "MoveInstance": {
-              "methods": [
-                "move_instance"
-              ]
-            },
-            "SetIamPolicy": {
-              "methods": [
-                "set_iam_policy"
-              ]
-            },
-            "TestIamPermissions": {
-              "methods": [
-                "test_iam_permissions"
-              ]
-            },
-            "UpdateInstance": {
-              "methods": [
-                "update_instance"
-              ]
-            },
-            "UpdateInstanceConfig": {
-              "methods": [
-                "update_instance_config"
-              ]
-            },
-            "UpdateInstancePartition": {
-              "methods": [
-                "update_instance_partition"
-              ]
-            }
-          }
-        },
-        "grpc-async": {
-          "libraryClient": "InstanceAdminAsyncClient",
-          "rpcs": {
-            "CreateInstance": {
-              "methods": [
-                "create_instance"
-              ]
-            },
-            "CreateInstanceConfig": {
-              "methods": [
-                "create_instance_config"
-              ]
-            },
-            "CreateInstancePartition": {
-              "methods": [
-                "create_instance_partition"
-              ]
-            },
-            "DeleteInstance": {
-              "methods": [
-                "delete_instance"
-              ]
-            },
-            "DeleteInstanceConfig": {
-              "methods": [
-                "delete_instance_config"
-              ]
-            },
-            "DeleteInstancePartition": {
-              "methods": [
-                "delete_instance_partition"
-              ]
-            },
-            "GetIamPolicy": {
-              "methods": [
-                "get_iam_policy"
-              ]
-            },
-            "GetInstance": {
-              "methods": [
-                "get_instance"
-              ]
-            },
-            "GetInstanceConfig": {
-              "methods": [
-                "get_instance_config"
-              ]
-            },
-            "GetInstancePartition": {
-              "methods": [
-                "get_instance_partition"
-              ]
-            },
-            "ListInstanceConfigOperations": {
-              "methods": [
-                "list_instance_config_operations"
-              ]
-            },
-            "ListInstanceConfigs": {
-              "methods": [
-                "list_instance_configs"
-              ]
-            },
-            "ListInstancePartitionOperations": {
-              "methods": [
-                "list_instance_partition_operations"
-              ]
-            },
-            "ListInstancePartitions": {
-              "methods": [
-                "list_instance_partitions"
-              ]
-            },
-            "ListInstances": {
-              "methods": [
-                "list_instances"
-              ]
-            },
-            "MoveInstance": {
-              "methods": [
-                "move_instance"
-              ]
-            },
-            "SetIamPolicy": {
-              "methods": [
-                "set_iam_policy"
-              ]
-            },
-            "TestIamPermissions": {
-              "methods": [
-                "test_iam_permissions"
-              ]
-            },
-            "UpdateInstance": {
-              "methods": [
-                "update_instance"
-              ]
-            },
-            "UpdateInstanceConfig": {
-              "methods": [
-                "update_instance_config"
-              ]
-            },
-            "UpdateInstancePartition": {
-              "methods": [
-                "update_instance_partition"
-              ]
-            }
-          }
-        },
-        "rest": {
-          "libraryClient": "InstanceAdminClient",
-          "rpcs": {
-            "CreateInstance": {
-              "methods": [
-                "create_instance"
-              ]
-            },
-            "CreateInstanceConfig": {
-              "methods": [
-                "create_instance_config"
-              ]
-            },
-            "CreateInstancePartition": {
-              "methods": [
-                "create_instance_partition"
-              ]
-            },
-            "DeleteInstance": {
-              "methods": [
-                "delete_instance"
-              ]
-            },
-            "DeleteInstanceConfig": {
-              "methods": [
-                "delete_instance_config"
-              ]
-            },
-            "DeleteInstancePartition": {
-              "methods": [
-                "delete_instance_partition"
-              ]
-            },
-            "GetIamPolicy": {
-              "methods": [
-                "get_iam_policy"
-              ]
-            },
-            "GetInstance": {
-              "methods": [
-                "get_instance"
-              ]
-            },
-            "GetInstanceConfig": {
-              "methods": [
-                "get_instance_config"
-              ]
-            },
-            "GetInstancePartition": {
-              "methods": [
-                "get_instance_partition"
-              ]
-            },
-            "ListInstanceConfigOperations": {
-              "methods": [
-                "list_instance_config_operations"
-              ]
-            },
-            "ListInstanceConfigs": {
-              "methods": [
-                "list_instance_configs"
-              ]
-            },
-            "ListInstancePartitionOperations": {
-              "methods": [
-                "list_instance_partition_operations"
-              ]
-            },
-            "ListInstancePartitions": {
-              "methods": [
-                "list_instance_partitions"
-              ]
-            },
-            "ListInstances": {
-              "methods": [
-                "list_instances"
-              ]
-            },
-            "MoveInstance": {
-              "methods": [
-                "move_instance"
-              ]
-            },
-            "SetIamPolicy": {
-              "methods": [
-                "set_iam_policy"
-              ]
-            },
-            "TestIamPermissions": {
-              "methods": [
-                "test_iam_permissions"
-              ]
-            },
-            "UpdateInstance": {
-              "methods": [
-                "update_instance"
-              ]
-            },
-            "UpdateInstanceConfig": {
-              "methods": [
-                "update_instance_config"
-              ]
-            },
-            "UpdateInstancePartition": {
-              "methods": [
-                "update_instance_partition"
-              ]
-            }
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/google/cloud/spanner_admin_instance_v1/gapic_version.py b/google/cloud/spanner_admin_instance_v1/gapic_version.py
deleted file mode 100644
index bf54fc40ae..0000000000
--- a/google/cloud/spanner_admin_instance_v1/gapic_version.py
+++ /dev/null
@@ -1,16 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-__version__ = "3.63.0"  # {x-release-please-version}
diff --git a/google/cloud/spanner_admin_instance_v1/py.typed b/google/cloud/spanner_admin_instance_v1/py.typed
deleted file mode 100644
index 915a8e55e3..0000000000
--- a/google/cloud/spanner_admin_instance_v1/py.typed
+++ /dev/null
@@ -1,2 +0,0 @@
-# Marker file for PEP 561.
-# The google-cloud-spanner-admin-instance package uses inline types.
diff --git a/google/cloud/spanner_admin_instance_v1/services/__init__.py b/google/cloud/spanner_admin_instance_v1/services/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/__init__.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/__init__.py
deleted file mode 100644
index 796f68a51c..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/__init__.py
+++ /dev/null
@@ -1,22 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from .async_client import InstanceAdminAsyncClient
-from .client import InstanceAdminClient
-
-__all__ = (
-    "InstanceAdminClient",
-    "InstanceAdminAsyncClient",
-)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/async_client.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/async_client.py
deleted file mode 100644
index 0797104b7c..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/async_client.py
+++ /dev/null
@@ -1,3688 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-import logging as std_logging
-import re
-from typing import (
-    Callable,
-    Dict,
-    Mapping,
-    MutableMapping,
-    MutableSequence,
-    Optional,
-    Sequence,
-    Tuple,
-    Type,
-    Union,
-)
-import uuid
-
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1
-from google.api_core import retry_async as retries
-from google.api_core.client_options import ClientOptions
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-
-from google.cloud.spanner_admin_instance_v1 import gapic_version as package_version
-
-try:
-    OptionalRetry = Union[retries.AsyncRetry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.AsyncRetry, object, None]  # type: ignore
-
-from google.api_core import operation  # type: ignore
-from google.api_core import operation_async  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1.services.instance_admin import pagers
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-from .client import InstanceAdminClient
-from .transports.base import DEFAULT_CLIENT_INFO, InstanceAdminTransport
-from .transports.grpc_asyncio import InstanceAdminGrpcAsyncIOTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class InstanceAdminAsyncClient:
-    """Cloud Spanner Instance Admin API
-
-    The Cloud Spanner Instance Admin API can be used to create,
-    delete, modify and list instances. Instances are dedicated Cloud
-    Spanner serving and storage resources to be used by Cloud
-    Spanner databases.
-
-    Each instance has a "configuration", which dictates where the
-    serving resources for the Cloud Spanner instance are located
-    (e.g., US-central, Europe). Configurations are created by Google
-    based on resource availability.
-
-    Cloud Spanner billing is based on the instances that exist and
-    their sizes. After an instance exists, there are no additional
-    per-database or per-operation charges for use of the instance
-    (though there may be additional network bandwidth charges).
-    Instances offer isolation: problems with databases in one
-    instance will not affect other instances. However, within an
-    instance databases can affect each other. For example, if one
-    database in an instance receives a lot of requests and consumes
-    most of the instance resources, fewer resources are available
-    for other databases in that instance, and their performance may
-    suffer.
-    """
-
-    _client: InstanceAdminClient
-
-    # Copy defaults from the synchronous client for use here.
-    # Note: DEFAULT_ENDPOINT is deprecated. Use _DEFAULT_ENDPOINT_TEMPLATE instead.
-    DEFAULT_ENDPOINT = InstanceAdminClient.DEFAULT_ENDPOINT
-    DEFAULT_MTLS_ENDPOINT = InstanceAdminClient.DEFAULT_MTLS_ENDPOINT
-    _DEFAULT_ENDPOINT_TEMPLATE = InstanceAdminClient._DEFAULT_ENDPOINT_TEMPLATE
-    _DEFAULT_UNIVERSE = InstanceAdminClient._DEFAULT_UNIVERSE
-
-    instance_path = staticmethod(InstanceAdminClient.instance_path)
-    parse_instance_path = staticmethod(InstanceAdminClient.parse_instance_path)
-    instance_config_path = staticmethod(InstanceAdminClient.instance_config_path)
-    parse_instance_config_path = staticmethod(
-        InstanceAdminClient.parse_instance_config_path
-    )
-    instance_partition_path = staticmethod(InstanceAdminClient.instance_partition_path)
-    parse_instance_partition_path = staticmethod(
-        InstanceAdminClient.parse_instance_partition_path
-    )
-    common_billing_account_path = staticmethod(
-        InstanceAdminClient.common_billing_account_path
-    )
-    parse_common_billing_account_path = staticmethod(
-        InstanceAdminClient.parse_common_billing_account_path
-    )
-    common_folder_path = staticmethod(InstanceAdminClient.common_folder_path)
-    parse_common_folder_path = staticmethod(
-        InstanceAdminClient.parse_common_folder_path
-    )
-    common_organization_path = staticmethod(
-        InstanceAdminClient.common_organization_path
-    )
-    parse_common_organization_path = staticmethod(
-        InstanceAdminClient.parse_common_organization_path
-    )
-    common_project_path = staticmethod(InstanceAdminClient.common_project_path)
-    parse_common_project_path = staticmethod(
-        InstanceAdminClient.parse_common_project_path
-    )
-    common_location_path = staticmethod(InstanceAdminClient.common_location_path)
-    parse_common_location_path = staticmethod(
-        InstanceAdminClient.parse_common_location_path
-    )
-
-    @classmethod
-    def from_service_account_info(cls, info: dict, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            info.
-
-        Args:
-            info (dict): The service account private key info.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            InstanceAdminAsyncClient: The constructed client.
-        """
-        return InstanceAdminClient.from_service_account_info.__func__(InstanceAdminAsyncClient, info, *args, **kwargs)  # type: ignore
-
-    @classmethod
-    def from_service_account_file(cls, filename: str, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            file.
-
-        Args:
-            filename (str): The path to the service account private key json
-                file.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            InstanceAdminAsyncClient: The constructed client.
-        """
-        return InstanceAdminClient.from_service_account_file.__func__(InstanceAdminAsyncClient, filename, *args, **kwargs)  # type: ignore
-
-    from_service_account_json = from_service_account_file
-
-    @classmethod
-    def get_mtls_endpoint_and_cert_source(
-        cls, client_options: Optional[ClientOptions] = None
-    ):
-        """Return the API endpoint and client cert source for mutual TLS.
-
-        The client cert source is determined in the following order:
-        (1) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not "true", the
-        client cert source is None.
-        (2) if `client_options.client_cert_source` is provided, use the provided one; if the
-        default client cert source exists, use the default one; otherwise the client cert
-        source is None.
-
-        The API endpoint is determined in the following order:
-        (1) if `client_options.api_endpoint` if provided, use the provided one.
-        (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variable is "never", use the default API
-        endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
-        use the default API endpoint.
-
-        More details can be found at https://google.aip.dev/auth/4114.
-
-        Args:
-            client_options (google.api_core.client_options.ClientOptions): Custom options for the
-                client. Only the `api_endpoint` and `client_cert_source` properties may be used
-                in this method.
-
-        Returns:
-            Tuple[str, Callable[[], Tuple[bytes, bytes]]]: returns the API endpoint and the
-                client cert source to use.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If any errors happen.
-        """
-        return InstanceAdminClient.get_mtls_endpoint_and_cert_source(client_options)  # type: ignore
-
-    @property
-    def transport(self) -> InstanceAdminTransport:
-        """Returns the transport used by the client instance.
-
-        Returns:
-            InstanceAdminTransport: The transport used by the client instance.
-        """
-        return self._client.transport
-
-    @property
-    def api_endpoint(self):
-        """Return the API endpoint used by the client instance.
-
-        Returns:
-            str: The API endpoint used by the client instance.
-        """
-        return self._client._api_endpoint
-
-    @property
-    def universe_domain(self) -> str:
-        """Return the universe domain used by the client instance.
-
-        Returns:
-            str: The universe domain used
-                by the client instance.
-        """
-        return self._client._universe_domain
-
-    get_transport_class = InstanceAdminClient.get_transport_class
-
-    def __init__(
-        self,
-        *,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        transport: Optional[
-            Union[str, InstanceAdminTransport, Callable[..., InstanceAdminTransport]]
-        ] = "grpc_asyncio",
-        client_options: Optional[ClientOptions] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-    ) -> None:
-        """Instantiates the instance admin async client.
-
-        Args:
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            transport (Optional[Union[str,InstanceAdminTransport,Callable[..., InstanceAdminTransport]]]):
-                The transport to use, or a Callable that constructs and returns a new transport to use.
-                If a Callable is given, it will be called with the same set of initialization
-                arguments as used in the InstanceAdminTransport constructor.
-                If set to None, a transport is chosen automatically.
-            client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]):
-                Custom options for the client.
-
-                1. The ``api_endpoint`` property can be used to override the
-                default endpoint provided by the client when ``transport`` is
-                not explicitly provided. Only if this property is not set and
-                ``transport`` was not explicitly provided, the endpoint is
-                determined by the GOOGLE_API_USE_MTLS_ENDPOINT environment
-                variable, which have one of the following values:
-                "always" (always use the default mTLS endpoint), "never" (always
-                use the default regular endpoint) and "auto" (auto-switch to the
-                default mTLS endpoint if client certificate is present; this is
-                the default value).
-
-                2. If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
-                is "true", then the ``client_cert_source`` property can be used
-                to provide a client certificate for mTLS transport. If
-                not provided, the default SSL client certificate will be used if
-                present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
-                set, no client certificate will be used.
-
-                3. The ``universe_domain`` property can be used to override the
-                default "googleapis.com" universe. Note that ``api_endpoint``
-                property still takes precedence; and ``universe_domain`` is
-                currently not supported for mTLS.
-
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-
-        Raises:
-            google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
-                creation failed for any reason.
-        """
-        self._client = InstanceAdminClient(
-            credentials=credentials,
-            transport=transport,
-            client_options=client_options,
-            client_info=client_info,
-        )
-
-        if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        ):  # pragma: NO COVER
-            _LOGGER.debug(
-                "Created client `google.spanner.admin.instance_v1.InstanceAdminAsyncClient`.",
-                extra={
-                    "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                    "universeDomain": getattr(
-                        self._client._transport._credentials, "universe_domain", ""
-                    ),
-                    "credentialsType": f"{type(self._client._transport._credentials).__module__}.{type(self._client._transport._credentials).__qualname__}",
-                    "credentialsInfo": getattr(
-                        self.transport._credentials, "get_cred_info", lambda: None
-                    )(),
-                }
-                if hasattr(self._client._transport, "_credentials")
-                else {
-                    "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                    "credentialsType": None,
-                },
-            )
-
-    async def list_instance_configs(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstanceConfigsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstanceConfigsAsyncPager:
-        r"""Lists the supported instance configurations for a
-        given project.
-        Returns both Google-managed configurations and
-        user-managed configurations.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_list_instance_configs():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstanceConfigsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_configs(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsRequest, dict]]):
-                The request object. The request for
-                [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-            parent (:class:`str`):
-                Required. The name of the project for which a list of
-                supported instance configurations is requested. Values
-                are of the form ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstanceConfigsAsyncPager:
-                The response for
-                   [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.ListInstanceConfigsRequest):
-            request = spanner_instance_admin.ListInstanceConfigsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_instance_configs
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListInstanceConfigsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.GetInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_instance_admin.InstanceConfig:
-        r"""Gets information about a particular instance
-        configuration.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_get_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.GetInstanceConfigRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = await client.get_instance_config(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.GetInstanceConfigRequest, dict]]):
-                The request object. The request for
-                [GetInstanceConfigRequest][google.spanner.admin.instance.v1.InstanceAdmin.GetInstanceConfig].
-            name (:class:`str`):
-                Required. The name of the requested instance
-                configuration. Values are of the form
-                ``projects/<project>/instanceConfigs/<config>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.types.InstanceConfig:
-                A possible configuration for a Cloud
-                Spanner instance. Configurations define
-                the geographic placement of nodes and
-                their replication.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.GetInstanceConfigRequest):
-            request = spanner_instance_admin.GetInstanceConfigRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_instance_config
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def create_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.CreateInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        instance_config: Optional[spanner_instance_admin.InstanceConfig] = None,
-        instance_config_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Creates an instance configuration and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance configuration. The
-        instance configuration name is assigned by the caller. If the
-        named instance configuration already exists,
-        ``CreateInstanceConfig`` returns ``ALREADY_EXISTS``.
-
-        Immediately after the request returns:
-
-        - The instance configuration is readable via the API, with all
-          requested attributes. The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true. Its state is ``CREATING``.
-
-        While the operation is pending:
-
-        - Cancelling the operation renders the instance configuration
-          immediately unreadable via the API.
-        - Except for deleting the creating resource, all other attempts
-          to modify the instance configuration are rejected.
-
-        Upon completion of the returned operation:
-
-        - Instances can be created using the instance configuration.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false. Its state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track creation of the instance configuration. The
-        metadata field type is
-        [CreateInstanceConfigMetadata][google.spanner.admin.instance.v1.CreateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.create``
-        permission on the resource
-        [parent][google.spanner.admin.instance.v1.CreateInstanceConfigRequest.parent].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_create_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.CreateInstanceConfigRequest(
-                    parent="parent_value",
-                    instance_config_id="instance_config_id_value",
-                )
-
-                # Make the request
-                operation = client.create_instance_config(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.CreateInstanceConfigRequest, dict]]):
-                The request object. The request for
-                [CreateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstanceConfig].
-            parent (:class:`str`):
-                Required. The name of the project in which to create the
-                instance configuration. Values are of the form
-                ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_config (:class:`google.cloud.spanner_admin_instance_v1.types.InstanceConfig`):
-                Required. The ``InstanceConfig`` proto of the
-                configuration to create. ``instance_config.name`` must
-                be ``<parent>/instanceConfigs/<instance_config_id>``.
-                ``instance_config.base_config`` must be a Google-managed
-                configuration name, e.g. /instanceConfigs/us-east1,
-                /instanceConfigs/nam3.
-
-                This corresponds to the ``instance_config`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_config_id (:class:`str`):
-                Required. The ID of the instance configuration to
-                create. Valid identifiers are of the form
-                ``custom-[-a-z0-9]*[a-z0-9]`` and must be between 2 and
-                64 characters in length. The ``custom-`` prefix is
-                required to avoid name conflicts with Google-managed
-                configurations.
-
-                This corresponds to the ``instance_config_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstanceConfig` A possible configuration for a Cloud Spanner instance. Configurations
-                   define the geographic placement of nodes and their
-                   replication.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, instance_config, instance_config_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.CreateInstanceConfigRequest):
-            request = spanner_instance_admin.CreateInstanceConfigRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if instance_config is not None:
-            request.instance_config = instance_config
-        if instance_config_id is not None:
-            request.instance_config_id = instance_config_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.create_instance_config
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_instance_admin.InstanceConfig,
-            metadata_type=spanner_instance_admin.CreateInstanceConfigMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def update_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.UpdateInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        instance_config: Optional[spanner_instance_admin.InstanceConfig] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Updates an instance configuration. The returned long-running
-        operation can be used to track the progress of updating the
-        instance. If the named instance configuration does not exist,
-        returns ``NOT_FOUND``.
-
-        Only user-managed configurations can be updated.
-
-        Immediately after the request returns:
-
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true.
-
-        While the operation is pending:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata.cancel_time].
-          The operation is guaranteed to succeed at undoing all changes,
-          after which point it terminates with a ``CANCELLED`` status.
-        - All other attempts to modify the instance configuration are
-          rejected.
-        - Reading the instance configuration via the API continues to
-          give the pre-request values.
-
-        Upon completion of the returned operation:
-
-        - Creating instances using the instance configuration uses the
-          new values.
-        - The new values of the instance configuration are readable via
-          the API.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track the instance configuration modification.
-        The metadata field type is
-        [UpdateInstanceConfigMetadata][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_update_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.UpdateInstanceConfigRequest(
-                )
-
-                # Make the request
-                operation = client.update_instance_config(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.UpdateInstanceConfigRequest, dict]]):
-                The request object. The request for
-                [UpdateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstanceConfig].
-            instance_config (:class:`google.cloud.spanner_admin_instance_v1.types.InstanceConfig`):
-                Required. The user instance configuration to update,
-                which must always include the instance configuration
-                name. Otherwise, only fields mentioned in
-                [update_mask][google.spanner.admin.instance.v1.UpdateInstanceConfigRequest.update_mask]
-                need be included. To prevent conflicts of concurrent
-                updates,
-                [etag][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-                can be used.
-
-                This corresponds to the ``instance_config`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (:class:`google.protobuf.field_mask_pb2.FieldMask`):
-                Required. A mask specifying which fields in
-                [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-                should be updated. The field mask must always be
-                specified; this prevents any future fields in
-                [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-                from being erased accidentally by clients that do not
-                know about them. Only display_name and labels can be
-                updated.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstanceConfig` A possible configuration for a Cloud Spanner instance. Configurations
-                   define the geographic placement of nodes and their
-                   replication.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [instance_config, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.UpdateInstanceConfigRequest):
-            request = spanner_instance_admin.UpdateInstanceConfigRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if instance_config is not None:
-            request.instance_config = instance_config
-        if update_mask is not None:
-            request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.update_instance_config
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("instance_config.name", request.instance_config.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_instance_admin.InstanceConfig,
-            metadata_type=spanner_instance_admin.UpdateInstanceConfigMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.DeleteInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes the instance configuration. Deletion is only allowed
-        when no instances are using the configuration. If any instances
-        are using the configuration, returns ``FAILED_PRECONDITION``.
-
-        Only user-managed configurations can be deleted.
-
-        Authorization requires ``spanner.instanceConfigs.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_delete_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.DeleteInstanceConfigRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                await client.delete_instance_config(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.DeleteInstanceConfigRequest, dict]]):
-                The request object. The request for
-                [DeleteInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstanceConfig].
-            name (:class:`str`):
-                Required. The name of the instance configuration to be
-                deleted. Values are of the form
-                ``projects/<project>/instanceConfigs/<instance_config>``
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.DeleteInstanceConfigRequest):
-            request = spanner_instance_admin.DeleteInstanceConfigRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.delete_instance_config
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def list_instance_config_operations(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstanceConfigOperationsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstanceConfigOperationsAsyncPager:
-        r"""Lists the user-managed instance configuration long-running
-        operations in the given project. An instance configuration
-        operation has a name of the form
-        ``projects/<project>/instanceConfigs/<instance_config>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_list_instance_config_operations():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstanceConfigOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_config_operations(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsRequest, dict]]):
-                The request object. The request for
-                [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-            parent (:class:`str`):
-                Required. The project of the instance configuration
-                operations. Values are of the form
-                ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstanceConfigOperationsAsyncPager:
-                The response for
-                   [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.ListInstanceConfigOperationsRequest
-        ):
-            request = spanner_instance_admin.ListInstanceConfigOperationsRequest(
-                request
-            )
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_instance_config_operations
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListInstanceConfigOperationsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_instances(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstancesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstancesAsyncPager:
-        r"""Lists all instances in the given project.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_list_instances():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstancesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instances(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.ListInstancesRequest, dict]]):
-                The request object. The request for
-                [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-            parent (:class:`str`):
-                Required. The name of the project for which a list of
-                instances is requested. Values are of the form
-                ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstancesAsyncPager:
-                The response for
-                   [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.ListInstancesRequest):
-            request = spanner_instance_admin.ListInstancesRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_instances
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListInstancesAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_instance_partitions(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstancePartitionsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstancePartitionsAsyncPager:
-        r"""Lists all instance partitions for the given instance.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_list_instance_partitions():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstancePartitionsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_partitions(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsRequest, dict]]):
-                The request object. The request for
-                [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-            parent (:class:`str`):
-                Required. The instance whose instance partitions should
-                be listed. Values are of the form
-                ``projects/<project>/instances/<instance>``. Use
-                ``{instance} = '-'`` to list instance partitions for all
-                Instances in a project, e.g.,
-                ``projects/myproject/instances/-``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstancePartitionsAsyncPager:
-                The response for
-                   [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.ListInstancePartitionsRequest
-        ):
-            request = spanner_instance_admin.ListInstancePartitionsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_instance_partitions
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListInstancePartitionsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.GetInstanceRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_instance_admin.Instance:
-        r"""Gets information about a particular instance.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_get_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.GetInstanceRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = await client.get_instance(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.GetInstanceRequest, dict]]):
-                The request object. The request for
-                [GetInstance][google.spanner.admin.instance.v1.InstanceAdmin.GetInstance].
-            name (:class:`str`):
-                Required. The name of the requested instance. Values are
-                of the form ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.types.Instance:
-                An isolated set of Cloud Spanner
-                resources on which databases can be
-                hosted.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.GetInstanceRequest):
-            request = spanner_instance_admin.GetInstanceRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_instance
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def create_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.CreateInstanceRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        instance_id: Optional[str] = None,
-        instance: Optional[spanner_instance_admin.Instance] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Creates an instance and begins preparing it to begin serving.
-        The returned long-running operation can be used to track the
-        progress of preparing the new instance. The instance name is
-        assigned by the caller. If the named instance already exists,
-        ``CreateInstance`` returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance is readable via the API, with all requested
-          attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance immediately
-          unreadable via the API.
-        - The instance can be deleted.
-        - All other attempts to modify the instance are rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can be created in the instance.
-        - The instance's allocated resource levels are readable via the
-          API.
-        - The instance's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track creation of the instance. The metadata field type
-        is
-        [CreateInstanceMetadata][google.spanner.admin.instance.v1.CreateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_create_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                instance = spanner_admin_instance_v1.Instance()
-                instance.name = "name_value"
-                instance.config = "config_value"
-                instance.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.CreateInstanceRequest(
-                    parent="parent_value",
-                    instance_id="instance_id_value",
-                    instance=instance,
-                )
-
-                # Make the request
-                operation = client.create_instance(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.CreateInstanceRequest, dict]]):
-                The request object. The request for
-                [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance].
-            parent (:class:`str`):
-                Required. The name of the project in which to create the
-                instance. Values are of the form ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_id (:class:`str`):
-                Required. The ID of the instance to create. Valid
-                identifiers are of the form ``[a-z][-a-z0-9]*[a-z0-9]``
-                and must be between 2 and 64 characters in length.
-
-                This corresponds to the ``instance_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance (:class:`google.cloud.spanner_admin_instance_v1.types.Instance`):
-                Required. The instance to create. The name may be
-                omitted, but if specified must be
-                ``<parent>/instances/<instance_id>``.
-
-                This corresponds to the ``instance`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_instance_v1.types.Instance`
-                An isolated set of Cloud Spanner resources on which
-                databases can be hosted.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, instance_id, instance]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.CreateInstanceRequest):
-            request = spanner_instance_admin.CreateInstanceRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if instance_id is not None:
-            request.instance_id = instance_id
-        if instance is not None:
-            request.instance = instance
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.create_instance
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_instance_admin.Instance,
-            metadata_type=spanner_instance_admin.CreateInstanceMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def update_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.UpdateInstanceRequest, dict]
-        ] = None,
-        *,
-        instance: Optional[spanner_instance_admin.Instance] = None,
-        field_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Updates an instance, and begins allocating or releasing
-        resources as requested. The returned long-running operation can
-        be used to track the progress of updating the instance. If the
-        named instance does not exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance's
-          allocation has been requested, billing is based on the
-          newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance are rejected.
-        - Reading the instance via the API continues to give the
-          pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance's tables.
-        - The instance's new resource levels are readable via the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track the instance modification. The metadata field type
-        is
-        [UpdateInstanceMetadata][google.spanner.admin.instance.v1.UpdateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        Authorization requires ``spanner.instances.update`` permission
-        on the resource
-        [name][google.spanner.admin.instance.v1.Instance.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_update_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                instance = spanner_admin_instance_v1.Instance()
-                instance.name = "name_value"
-                instance.config = "config_value"
-                instance.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.UpdateInstanceRequest(
-                    instance=instance,
-                )
-
-                # Make the request
-                operation = client.update_instance(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.UpdateInstanceRequest, dict]]):
-                The request object. The request for
-                [UpdateInstance][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstance].
-            instance (:class:`google.cloud.spanner_admin_instance_v1.types.Instance`):
-                Required. The instance to update, which must always
-                include the instance name. Otherwise, only fields
-                mentioned in
-                [field_mask][google.spanner.admin.instance.v1.UpdateInstanceRequest.field_mask]
-                need be included.
-
-                This corresponds to the ``instance`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            field_mask (:class:`google.protobuf.field_mask_pb2.FieldMask`):
-                Required. A mask specifying which fields in
-                [Instance][google.spanner.admin.instance.v1.Instance]
-                should be updated. The field mask must always be
-                specified; this prevents any future fields in
-                [Instance][google.spanner.admin.instance.v1.Instance]
-                from being erased accidentally by clients that do not
-                know about them.
-
-                This corresponds to the ``field_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_instance_v1.types.Instance`
-                An isolated set of Cloud Spanner resources on which
-                databases can be hosted.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [instance, field_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.UpdateInstanceRequest):
-            request = spanner_instance_admin.UpdateInstanceRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if instance is not None:
-            request.instance = instance
-        if field_mask is not None:
-            request.field_mask = field_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.update_instance
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("instance.name", request.instance.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_instance_admin.Instance,
-            metadata_type=spanner_instance_admin.UpdateInstanceMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.DeleteInstanceRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes an instance.
-
-        Immediately upon completion of the request:
-
-        - Billing ceases for all of the instance's reserved resources.
-
-        Soon afterward:
-
-        - The instance and *all of its databases* immediately and
-          irrevocably disappear from the API. All data in the databases
-          is permanently deleted.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_delete_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.DeleteInstanceRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                await client.delete_instance(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.DeleteInstanceRequest, dict]]):
-                The request object. The request for
-                [DeleteInstance][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstance].
-            name (:class:`str`):
-                Required. The name of the instance to be deleted. Values
-                are of the form
-                ``projects/<project>/instances/<instance>``
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.DeleteInstanceRequest):
-            request = spanner_instance_admin.DeleteInstanceRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.delete_instance
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def set_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.SetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Sets the access control policy on an instance resource. Replaces
-        any existing policy.
-
-        Authorization requires ``spanner.instances.setIamPolicy`` on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            async def sample_set_iam_policy():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.SetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = await client.set_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.iam.v1.iam_policy_pb2.SetIamPolicyRequest, dict]]):
-                The request object. Request message for ``SetIamPolicy`` method.
-            resource (:class:`str`):
-                REQUIRED: The resource for which the
-                policy is being specified. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - The request isn't a proto-plus wrapped type,
-        #   so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = iam_policy_pb2.SetIamPolicyRequest(**request)
-        elif not request:
-            request = iam_policy_pb2.SetIamPolicyRequest(resource=resource)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.set_iam_policy
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.GetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Gets the access control policy for an instance resource. Returns
-        an empty policy if an instance exists but does not have a policy
-        set.
-
-        Authorization requires ``spanner.instances.getIamPolicy`` on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            async def sample_get_iam_policy():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.GetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = await client.get_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.iam.v1.iam_policy_pb2.GetIamPolicyRequest, dict]]):
-                The request object. Request message for ``GetIamPolicy`` method.
-            resource (:class:`str`):
-                REQUIRED: The resource for which the
-                policy is being requested. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - The request isn't a proto-plus wrapped type,
-        #   so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = iam_policy_pb2.GetIamPolicyRequest(**request)
-        elif not request:
-            request = iam_policy_pb2.GetIamPolicyRequest(resource=resource)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_iam_policy
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def test_iam_permissions(
-        self,
-        request: Optional[Union[iam_policy_pb2.TestIamPermissionsRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        permissions: Optional[MutableSequence[str]] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> iam_policy_pb2.TestIamPermissionsResponse:
-        r"""Returns permissions that the caller has on the specified
-        instance resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner instance
-        resource will result in a NOT_FOUND error if the user has
-        ``spanner.instances.list`` permission on the containing Google
-        Cloud Project. Otherwise returns an empty set of permissions.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            async def sample_test_iam_permissions():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.TestIamPermissionsRequest(
-                    resource="resource_value",
-                    permissions=['permissions_value1', 'permissions_value2'],
-                )
-
-                # Make the request
-                response = await client.test_iam_permissions(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.iam.v1.iam_policy_pb2.TestIamPermissionsRequest, dict]]):
-                The request object. Request message for ``TestIamPermissions`` method.
-            resource (:class:`str`):
-                REQUIRED: The resource for which the
-                policy detail is being requested. See
-                the operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            permissions (:class:`MutableSequence[str]`):
-                The set of permissions to check for the ``resource``.
-                Permissions with wildcards (such as '*' or 'storage.*')
-                are not allowed. For more information see `IAM
-                Overview <https://cloud.google.com/iam/docs/overview#permissions>`__.
-
-                This corresponds to the ``permissions`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.iam_policy_pb2.TestIamPermissionsResponse:
-                Response message for TestIamPermissions method.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource, permissions]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - The request isn't a proto-plus wrapped type,
-        #   so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = iam_policy_pb2.TestIamPermissionsRequest(**request)
-        elif not request:
-            request = iam_policy_pb2.TestIamPermissionsRequest(
-                resource=resource, permissions=permissions
-            )
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.test_iam_permissions
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.GetInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_instance_admin.InstancePartition:
-        r"""Gets information about a particular instance
-        partition.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_get_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.GetInstancePartitionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = await client.get_instance_partition(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.GetInstancePartitionRequest, dict]]):
-                The request object. The request for
-                [GetInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.GetInstancePartition].
-            name (:class:`str`):
-                Required. The name of the requested instance partition.
-                Values are of the form
-                ``projects/{project}/instances/{instance}/instancePartitions/{instance_partition}``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.types.InstancePartition:
-                An isolated set of Cloud Spanner
-                resources that databases can define
-                placements on.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.GetInstancePartitionRequest):
-            request = spanner_instance_admin.GetInstancePartitionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_instance_partition
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def create_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.CreateInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        instance_partition: Optional[spanner_instance_admin.InstancePartition] = None,
-        instance_partition_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Creates an instance partition and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance partition. The
-        instance partition name is assigned by the caller. If the named
-        instance partition already exists, ``CreateInstancePartition``
-        returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance partition is readable via the API, with all
-          requested attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance partition
-          immediately unreadable via the API.
-        - The instance partition can be deleted.
-        - All other attempts to modify the instance partition are
-          rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can start using this instance partition.
-        - The instance partition's allocated resource levels are
-          readable via the API.
-        - The instance partition's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track creation of the instance partition. The
-        metadata field type is
-        [CreateInstancePartitionMetadata][google.spanner.admin.instance.v1.CreateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_create_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                instance_partition = spanner_admin_instance_v1.InstancePartition()
-                instance_partition.node_count = 1070
-                instance_partition.name = "name_value"
-                instance_partition.config = "config_value"
-                instance_partition.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.CreateInstancePartitionRequest(
-                    parent="parent_value",
-                    instance_partition_id="instance_partition_id_value",
-                    instance_partition=instance_partition,
-                )
-
-                # Make the request
-                operation = client.create_instance_partition(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.CreateInstancePartitionRequest, dict]]):
-                The request object. The request for
-                [CreateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstancePartition].
-            parent (:class:`str`):
-                Required. The name of the instance in which to create
-                the instance partition. Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_partition (:class:`google.cloud.spanner_admin_instance_v1.types.InstancePartition`):
-                Required. The instance partition to create. The
-                instance_partition.name may be omitted, but if specified
-                must be
-                ``<parent>/instancePartitions/<instance_partition_id>``.
-
-                This corresponds to the ``instance_partition`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_partition_id (:class:`str`):
-                Required. The ID of the instance partition to create.
-                Valid identifiers are of the form
-                ``[a-z][-a-z0-9]*[a-z0-9]`` and must be between 2 and 64
-                characters in length.
-
-                This corresponds to the ``instance_partition_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstancePartition` An isolated set of Cloud Spanner resources that databases can define
-                   placements on.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, instance_partition, instance_partition_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.CreateInstancePartitionRequest
-        ):
-            request = spanner_instance_admin.CreateInstancePartitionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-        if instance_partition is not None:
-            request.instance_partition = instance_partition
-        if instance_partition_id is not None:
-            request.instance_partition_id = instance_partition_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.create_instance_partition
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_instance_admin.InstancePartition,
-            metadata_type=spanner_instance_admin.CreateInstancePartitionMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.DeleteInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes an existing instance partition. Requires that the
-        instance partition is not used by any database or backup and is
-        not the default instance partition of an instance.
-
-        Authorization requires ``spanner.instancePartitions.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_delete_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.DeleteInstancePartitionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                await client.delete_instance_partition(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.DeleteInstancePartitionRequest, dict]]):
-                The request object. The request for
-                [DeleteInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstancePartition].
-            name (:class:`str`):
-                Required. The name of the instance partition to be
-                deleted. Values are of the form
-                ``projects/{project}/instances/{instance}/instancePartitions/{instance_partition}``
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.DeleteInstancePartitionRequest
-        ):
-            request = spanner_instance_admin.DeleteInstancePartitionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.delete_instance_partition
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def update_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.UpdateInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        instance_partition: Optional[spanner_instance_admin.InstancePartition] = None,
-        field_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Updates an instance partition, and begins allocating or
-        releasing resources as requested. The returned long-running
-        operation can be used to track the progress of updating the
-        instance partition. If the named instance partition does not
-        exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance
-          partition's allocation has been requested, billing is based on
-          the newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance partition are
-          rejected.
-        - Reading the instance partition via the API continues to give
-          the pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance partition's tables.
-        - The instance partition's new resource levels are readable via
-          the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track the instance partition modification.
-        The metadata field type is
-        [UpdateInstancePartitionMetadata][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        Authorization requires ``spanner.instancePartitions.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_update_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                instance_partition = spanner_admin_instance_v1.InstancePartition()
-                instance_partition.node_count = 1070
-                instance_partition.name = "name_value"
-                instance_partition.config = "config_value"
-                instance_partition.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.UpdateInstancePartitionRequest(
-                    instance_partition=instance_partition,
-                )
-
-                # Make the request
-                operation = client.update_instance_partition(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.UpdateInstancePartitionRequest, dict]]):
-                The request object. The request for
-                [UpdateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstancePartition].
-            instance_partition (:class:`google.cloud.spanner_admin_instance_v1.types.InstancePartition`):
-                Required. The instance partition to update, which must
-                always include the instance partition name. Otherwise,
-                only fields mentioned in
-                [field_mask][google.spanner.admin.instance.v1.UpdateInstancePartitionRequest.field_mask]
-                need be included.
-
-                This corresponds to the ``instance_partition`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            field_mask (:class:`google.protobuf.field_mask_pb2.FieldMask`):
-                Required. A mask specifying which fields in
-                [InstancePartition][google.spanner.admin.instance.v1.InstancePartition]
-                should be updated. The field mask must always be
-                specified; this prevents any future fields in
-                [InstancePartition][google.spanner.admin.instance.v1.InstancePartition]
-                from being erased accidentally by clients that do not
-                know about them.
-
-                This corresponds to the ``field_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstancePartition` An isolated set of Cloud Spanner resources that databases can define
-                   placements on.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [instance_partition, field_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.UpdateInstancePartitionRequest
-        ):
-            request = spanner_instance_admin.UpdateInstancePartitionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if instance_partition is not None:
-            request.instance_partition = instance_partition
-        if field_mask is not None:
-            request.field_mask = field_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.update_instance_partition
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("instance_partition.name", request.instance_partition.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_instance_admin.InstancePartition,
-            metadata_type=spanner_instance_admin.UpdateInstancePartitionMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_instance_partition_operations(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstancePartitionOperationsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstancePartitionOperationsAsyncPager:
-        r"""Lists instance partition long-running operations in the given
-        instance. An instance partition operation has a name of the form
-        ``projects/<project>/instances/<instance>/instancePartitions/<instance_partition>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        Authorization requires
-        ``spanner.instancePartitionOperations.list`` permission on the
-        resource
-        [parent][google.spanner.admin.instance.v1.ListInstancePartitionOperationsRequest.parent].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_list_instance_partition_operations():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstancePartitionOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_partition_operations(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsRequest, dict]]):
-                The request object. The request for
-                [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-            parent (:class:`str`):
-                Required. The parent instance of the instance partition
-                operations. Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstancePartitionOperationsAsyncPager:
-                The response for
-                   [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.ListInstancePartitionOperationsRequest
-        ):
-            request = spanner_instance_admin.ListInstancePartitionOperationsRequest(
-                request
-            )
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if parent is not None:
-            request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_instance_partition_operations
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListInstancePartitionOperationsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def move_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.MoveInstanceRequest, dict]
-        ] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation_async.AsyncOperation:
-        r"""Moves an instance to the target instance configuration. You can
-        use the returned long-running operation to track the progress of
-        moving the instance.
-
-        ``MoveInstance`` returns ``FAILED_PRECONDITION`` if the instance
-        meets any of the following criteria:
-
-        - Is undergoing a move to a different instance configuration
-        - Has backups
-        - Has an ongoing update
-        - Contains any CMEK-enabled databases
-        - Is a free trial instance
-
-        While the operation is pending:
-
-        - All other attempts to modify the instance, including changes
-          to its compute capacity, are rejected.
-
-        - The following database and backup admin operations are
-          rejected:
-
-          - ``DatabaseAdmin.CreateDatabase``
-          - ``DatabaseAdmin.UpdateDatabaseDdl`` (disabled if
-            default_leader is specified in the request.)
-          - ``DatabaseAdmin.RestoreDatabase``
-          - ``DatabaseAdmin.CreateBackup``
-          - ``DatabaseAdmin.CopyBackup``
-
-        - Both the source and target instance configurations are subject
-          to hourly compute and storage charges.
-
-        - The instance might experience higher read-write latencies and
-          a higher transaction abort rate. However, moving an instance
-          doesn't cause any downtime.
-
-        The returned long-running operation has a name of the format
-        ``<instance_name>/operations/<operation_id>`` and can be used to
-        track the move instance operation. The metadata field type is
-        [MoveInstanceMetadata][google.spanner.admin.instance.v1.MoveInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful. Cancelling the operation sets its metadata's
-        [cancel_time][google.spanner.admin.instance.v1.MoveInstanceMetadata.cancel_time].
-        Cancellation is not immediate because it involves moving any
-        data previously moved to the target instance configuration back
-        to the original instance configuration. You can use this
-        operation to track the progress of the cancellation. Upon
-        successful completion of the cancellation, the operation
-        terminates with ``CANCELLED`` status.
-
-        If not cancelled, upon completion of the returned operation:
-
-        - The instance successfully moves to the target instance
-          configuration.
-        - You are billed for compute and storage in target instance
-          configuration.
-
-        Authorization requires the ``spanner.instances.update``
-        permission on the resource
-        [instance][google.spanner.admin.instance.v1.Instance].
-
-        For more details, see `Move an
-        instance <https://cloud.google.com/spanner/docs/move-instance>`__.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            async def sample_move_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.MoveInstanceRequest(
-                    name="name_value",
-                    target_config="target_config_value",
-                )
-
-                # Make the request
-                operation = client.move_instance(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = (await operation).result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_admin_instance_v1.types.MoveInstanceRequest, dict]]):
-                The request object. The request for
-                [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation_async.AsyncOperation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.MoveInstanceResponse` The response for
-                   [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.MoveInstanceRequest):
-            request = spanner_instance_admin.MoveInstanceRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.move_instance
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation_async.from_gapic(
-            response,
-            self._client._transport.operations_client,
-            spanner_instance_admin.MoveInstanceResponse,
-            metadata_type=spanner_instance_admin.MoveInstanceMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_operations(
-        self,
-        request: Optional[operations_pb2.ListOperationsRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.ListOperationsResponse:
-        r"""Lists operations that match the specified filter in the request.
-
-        Args:
-            request (:class:`~.operations_pb2.ListOperationsRequest`):
-                The request object. Request message for
-                `ListOperations` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.ListOperationsResponse:
-                Response message for ``ListOperations`` method.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.ListOperationsRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.list_operations]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_operation(
-        self,
-        request: Optional[operations_pb2.GetOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.Operation:
-        r"""Gets the latest state of a long-running operation.
-
-        Args:
-            request (:class:`~.operations_pb2.GetOperationRequest`):
-                The request object. Request message for
-                `GetOperation` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.Operation:
-                An ``Operation`` object.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.GetOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.get_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_operation(
-        self,
-        request: Optional[operations_pb2.DeleteOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a long-running operation.
-
-        This method indicates that the client is no longer interested
-        in the operation result. It does not cancel the operation.
-        If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.DeleteOperationRequest`):
-                The request object. Request message for
-                `DeleteOperation` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.DeleteOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.delete_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def cancel_operation(
-        self,
-        request: Optional[operations_pb2.CancelOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Starts asynchronous cancellation on a long-running operation.
-
-        The server makes a best effort to cancel the operation, but success
-        is not guaranteed.  If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.CancelOperationRequest`):
-                The request object. Request message for
-                `CancelOperation` method.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.CancelOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self.transport._wrapped_methods[self._client._transport.cancel_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def __aenter__(self) -> "InstanceAdminAsyncClient":
-        return self
-
-    async def __aexit__(self, exc_type, exc, tb):
-        await self.transport.close()
-
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-__all__ = ("InstanceAdminAsyncClient",)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/client.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/client.py
deleted file mode 100644
index 0aa8d0371c..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/client.py
+++ /dev/null
@@ -1,4130 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-from http import HTTPStatus
-import json
-import logging as std_logging
-import os
-import re
-from typing import (
-    Callable,
-    Dict,
-    Mapping,
-    MutableMapping,
-    MutableSequence,
-    Optional,
-    Sequence,
-    Tuple,
-    Type,
-    Union,
-    cast,
-)
-import uuid
-import warnings
-
-from google.api_core import client_options as client_options_lib
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1
-from google.api_core import retry as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.exceptions import MutualTLSChannelError  # type: ignore
-from google.auth.transport import mtls  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-
-from google.cloud.spanner_admin_instance_v1 import gapic_version as package_version
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-from google.api_core import operation  # type: ignore
-from google.api_core import operation_async  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1.services.instance_admin import pagers
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-from .transports.base import DEFAULT_CLIENT_INFO, InstanceAdminTransport
-from .transports.grpc import InstanceAdminGrpcTransport
-from .transports.grpc_asyncio import InstanceAdminGrpcAsyncIOTransport
-from .transports.rest import InstanceAdminRestTransport
-
-
-class InstanceAdminClientMeta(type):
-    """Metaclass for the InstanceAdmin client.
-
-    This provides class-level methods for building and retrieving
-    support objects (e.g. transport) without polluting the client instance
-    objects.
-    """
-
-    _transport_registry = OrderedDict()  # type: Dict[str, Type[InstanceAdminTransport]]
-    _transport_registry["grpc"] = InstanceAdminGrpcTransport
-    _transport_registry["grpc_asyncio"] = InstanceAdminGrpcAsyncIOTransport
-    _transport_registry["rest"] = InstanceAdminRestTransport
-
-    def get_transport_class(
-        cls,
-        label: Optional[str] = None,
-    ) -> Type[InstanceAdminTransport]:
-        """Returns an appropriate transport class.
-
-        Args:
-            label: The name of the desired transport. If none is
-                provided, then the first transport in the registry is used.
-
-        Returns:
-            The transport class to use.
-        """
-        # If a specific transport is requested, return that one.
-        if label:
-            return cls._transport_registry[label]
-
-        # No transport is requested; return the default (that is, the first one
-        # in the dictionary).
-        return next(iter(cls._transport_registry.values()))
-
-
-class InstanceAdminClient(metaclass=InstanceAdminClientMeta):
-    """Cloud Spanner Instance Admin API
-
-    The Cloud Spanner Instance Admin API can be used to create,
-    delete, modify and list instances. Instances are dedicated Cloud
-    Spanner serving and storage resources to be used by Cloud
-    Spanner databases.
-
-    Each instance has a "configuration", which dictates where the
-    serving resources for the Cloud Spanner instance are located
-    (e.g., US-central, Europe). Configurations are created by Google
-    based on resource availability.
-
-    Cloud Spanner billing is based on the instances that exist and
-    their sizes. After an instance exists, there are no additional
-    per-database or per-operation charges for use of the instance
-    (though there may be additional network bandwidth charges).
-    Instances offer isolation: problems with databases in one
-    instance will not affect other instances. However, within an
-    instance databases can affect each other. For example, if one
-    database in an instance receives a lot of requests and consumes
-    most of the instance resources, fewer resources are available
-    for other databases in that instance, and their performance may
-    suffer.
-    """
-
-    @staticmethod
-    def _get_default_mtls_endpoint(api_endpoint):
-        """Converts api endpoint to mTLS endpoint.
-
-        Convert "*.sandbox.googleapis.com" and "*.googleapis.com" to
-        "*.mtls.sandbox.googleapis.com" and "*.mtls.googleapis.com" respectively.
-        Args:
-            api_endpoint (Optional[str]): the api endpoint to convert.
-        Returns:
-            str: converted mTLS api endpoint.
-        """
-        if not api_endpoint:
-            return api_endpoint
-
-        mtls_endpoint_re = re.compile(
-            r"(?P<name>[^.]+)(?P<mtls>\.mtls)?(?P<sandbox>\.sandbox)?(?P<googledomain>\.googleapis\.com)?"
-        )
-
-        m = mtls_endpoint_re.match(api_endpoint)
-        name, mtls, sandbox, googledomain = m.groups()
-        if mtls or not googledomain:
-            return api_endpoint
-
-        if sandbox:
-            return api_endpoint.replace(
-                "sandbox.googleapis.com", "mtls.sandbox.googleapis.com"
-            )
-
-        return api_endpoint.replace(".googleapis.com", ".mtls.googleapis.com")
-
-    # Note: DEFAULT_ENDPOINT is deprecated. Use _DEFAULT_ENDPOINT_TEMPLATE instead.
-    DEFAULT_ENDPOINT = "spanner.googleapis.com"
-    DEFAULT_MTLS_ENDPOINT = _get_default_mtls_endpoint.__func__(  # type: ignore
-        DEFAULT_ENDPOINT
-    )
-
-    _DEFAULT_ENDPOINT_TEMPLATE = "spanner.{UNIVERSE_DOMAIN}"
-    _DEFAULT_UNIVERSE = "googleapis.com"
-
-    @staticmethod
-    def _use_client_cert_effective():
-        """Returns whether client certificate should be used for mTLS if the
-        google-auth version supports should_use_client_cert automatic mTLS enablement.
-
-        Alternatively, read from the GOOGLE_API_USE_CLIENT_CERTIFICATE env var.
-
-        Returns:
-            bool: whether client certificate should be used for mTLS
-        Raises:
-            ValueError: (If using a version of google-auth without should_use_client_cert and
-            GOOGLE_API_USE_CLIENT_CERTIFICATE is set to an unexpected value.)
-        """
-        # check if google-auth version supports should_use_client_cert for automatic mTLS enablement
-        if hasattr(mtls, "should_use_client_cert"):  # pragma: NO COVER
-            return mtls.should_use_client_cert()
-        else:  # pragma: NO COVER
-            # if unsupported, fallback to reading from env var
-            use_client_cert_str = os.getenv(
-                "GOOGLE_API_USE_CLIENT_CERTIFICATE", "false"
-            ).lower()
-            if use_client_cert_str not in ("true", "false"):
-                raise ValueError(
-                    "Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be"
-                    " either `true` or `false`"
-                )
-            return use_client_cert_str == "true"
-
-    @classmethod
-    def from_service_account_info(cls, info: dict, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            info.
-
-        Args:
-            info (dict): The service account private key info.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            InstanceAdminClient: The constructed client.
-        """
-        credentials = service_account.Credentials.from_service_account_info(info)
-        kwargs["credentials"] = credentials
-        return cls(*args, **kwargs)
-
-    @classmethod
-    def from_service_account_file(cls, filename: str, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            file.
-
-        Args:
-            filename (str): The path to the service account private key json
-                file.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            InstanceAdminClient: The constructed client.
-        """
-        credentials = service_account.Credentials.from_service_account_file(filename)
-        kwargs["credentials"] = credentials
-        return cls(*args, **kwargs)
-
-    from_service_account_json = from_service_account_file
-
-    @property
-    def transport(self) -> InstanceAdminTransport:
-        """Returns the transport used by the client instance.
-
-        Returns:
-            InstanceAdminTransport: The transport used by the client
-                instance.
-        """
-        return self._transport
-
-    @staticmethod
-    def instance_path(
-        project: str,
-        instance: str,
-    ) -> str:
-        """Returns a fully-qualified instance string."""
-        return "projects/{project}/instances/{instance}".format(
-            project=project,
-            instance=instance,
-        )
-
-    @staticmethod
-    def parse_instance_path(path: str) -> Dict[str, str]:
-        """Parses a instance path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def instance_config_path(
-        project: str,
-        instance_config: str,
-    ) -> str:
-        """Returns a fully-qualified instance_config string."""
-        return "projects/{project}/instanceConfigs/{instance_config}".format(
-            project=project,
-            instance_config=instance_config,
-        )
-
-    @staticmethod
-    def parse_instance_config_path(path: str) -> Dict[str, str]:
-        """Parses a instance_config path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instanceConfigs/(?P<instance_config>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def instance_partition_path(
-        project: str,
-        instance: str,
-        instance_partition: str,
-    ) -> str:
-        """Returns a fully-qualified instance_partition string."""
-        return "projects/{project}/instances/{instance}/instancePartitions/{instance_partition}".format(
-            project=project,
-            instance=instance,
-            instance_partition=instance_partition,
-        )
-
-    @staticmethod
-    def parse_instance_partition_path(path: str) -> Dict[str, str]:
-        """Parses a instance_partition path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/instancePartitions/(?P<instance_partition>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_billing_account_path(
-        billing_account: str,
-    ) -> str:
-        """Returns a fully-qualified billing_account string."""
-        return "billingAccounts/{billing_account}".format(
-            billing_account=billing_account,
-        )
-
-    @staticmethod
-    def parse_common_billing_account_path(path: str) -> Dict[str, str]:
-        """Parse a billing_account path into its component segments."""
-        m = re.match(r"^billingAccounts/(?P<billing_account>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_folder_path(
-        folder: str,
-    ) -> str:
-        """Returns a fully-qualified folder string."""
-        return "folders/{folder}".format(
-            folder=folder,
-        )
-
-    @staticmethod
-    def parse_common_folder_path(path: str) -> Dict[str, str]:
-        """Parse a folder path into its component segments."""
-        m = re.match(r"^folders/(?P<folder>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_organization_path(
-        organization: str,
-    ) -> str:
-        """Returns a fully-qualified organization string."""
-        return "organizations/{organization}".format(
-            organization=organization,
-        )
-
-    @staticmethod
-    def parse_common_organization_path(path: str) -> Dict[str, str]:
-        """Parse a organization path into its component segments."""
-        m = re.match(r"^organizations/(?P<organization>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_project_path(
-        project: str,
-    ) -> str:
-        """Returns a fully-qualified project string."""
-        return "projects/{project}".format(
-            project=project,
-        )
-
-    @staticmethod
-    def parse_common_project_path(path: str) -> Dict[str, str]:
-        """Parse a project path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_location_path(
-        project: str,
-        location: str,
-    ) -> str:
-        """Returns a fully-qualified location string."""
-        return "projects/{project}/locations/{location}".format(
-            project=project,
-            location=location,
-        )
-
-    @staticmethod
-    def parse_common_location_path(path: str) -> Dict[str, str]:
-        """Parse a location path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @classmethod
-    def get_mtls_endpoint_and_cert_source(
-        cls, client_options: Optional[client_options_lib.ClientOptions] = None
-    ):
-        """Deprecated. Return the API endpoint and client cert source for mutual TLS.
-
-        The client cert source is determined in the following order:
-        (1) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not "true", the
-        client cert source is None.
-        (2) if `client_options.client_cert_source` is provided, use the provided one; if the
-        default client cert source exists, use the default one; otherwise the client cert
-        source is None.
-
-        The API endpoint is determined in the following order:
-        (1) if `client_options.api_endpoint` if provided, use the provided one.
-        (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variable is "never", use the default API
-        endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
-        use the default API endpoint.
-
-        More details can be found at https://google.aip.dev/auth/4114.
-
-        Args:
-            client_options (google.api_core.client_options.ClientOptions): Custom options for the
-                client. Only the `api_endpoint` and `client_cert_source` properties may be used
-                in this method.
-
-        Returns:
-            Tuple[str, Callable[[], Tuple[bytes, bytes]]]: returns the API endpoint and the
-                client cert source to use.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If any errors happen.
-        """
-
-        warnings.warn(
-            "get_mtls_endpoint_and_cert_source is deprecated. Use the api_endpoint property instead.",
-            DeprecationWarning,
-        )
-        if client_options is None:
-            client_options = client_options_lib.ClientOptions()
-        use_client_cert = InstanceAdminClient._use_client_cert_effective()
-        use_mtls_endpoint = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto")
-        if use_mtls_endpoint not in ("auto", "never", "always"):
-            raise MutualTLSChannelError(
-                "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-            )
-
-        # Figure out the client cert source to use.
-        client_cert_source = None
-        if use_client_cert:
-            if client_options.client_cert_source:
-                client_cert_source = client_options.client_cert_source
-            elif mtls.has_default_client_cert_source():
-                client_cert_source = mtls.default_client_cert_source()
-
-        # Figure out which api endpoint to use.
-        if client_options.api_endpoint is not None:
-            api_endpoint = client_options.api_endpoint
-        elif use_mtls_endpoint == "always" or (
-            use_mtls_endpoint == "auto" and client_cert_source
-        ):
-            api_endpoint = cls.DEFAULT_MTLS_ENDPOINT
-        else:
-            api_endpoint = cls.DEFAULT_ENDPOINT
-
-        return api_endpoint, client_cert_source
-
-    @staticmethod
-    def _read_environment_variables():
-        """Returns the environment variables used by the client.
-
-        Returns:
-            Tuple[bool, str, str]: returns the GOOGLE_API_USE_CLIENT_CERTIFICATE,
-            GOOGLE_API_USE_MTLS_ENDPOINT, and GOOGLE_CLOUD_UNIVERSE_DOMAIN environment variables.
-
-        Raises:
-            ValueError: If GOOGLE_API_USE_CLIENT_CERTIFICATE is not
-                any of ["true", "false"].
-            google.auth.exceptions.MutualTLSChannelError: If GOOGLE_API_USE_MTLS_ENDPOINT
-                is not any of ["auto", "never", "always"].
-        """
-        use_client_cert = InstanceAdminClient._use_client_cert_effective()
-        use_mtls_endpoint = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto").lower()
-        universe_domain_env = os.getenv("GOOGLE_CLOUD_UNIVERSE_DOMAIN")
-        if use_mtls_endpoint not in ("auto", "never", "always"):
-            raise MutualTLSChannelError(
-                "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-            )
-        return use_client_cert, use_mtls_endpoint, universe_domain_env
-
-    @staticmethod
-    def _get_client_cert_source(provided_cert_source, use_cert_flag):
-        """Return the client cert source to be used by the client.
-
-        Args:
-            provided_cert_source (bytes): The client certificate source provided.
-            use_cert_flag (bool): A flag indicating whether to use the client certificate.
-
-        Returns:
-            bytes or None: The client cert source to be used by the client.
-        """
-        client_cert_source = None
-        if use_cert_flag:
-            if provided_cert_source:
-                client_cert_source = provided_cert_source
-            elif mtls.has_default_client_cert_source():
-                client_cert_source = mtls.default_client_cert_source()
-        return client_cert_source
-
-    @staticmethod
-    def _get_api_endpoint(
-        api_override, client_cert_source, universe_domain, use_mtls_endpoint
-    ):
-        """Return the API endpoint used by the client.
-
-        Args:
-            api_override (str): The API endpoint override. If specified, this is always
-                the return value of this function and the other arguments are not used.
-            client_cert_source (bytes): The client certificate source used by the client.
-            universe_domain (str): The universe domain used by the client.
-            use_mtls_endpoint (str): How to use the mTLS endpoint, which depends also on the other parameters.
-                Possible values are "always", "auto", or "never".
-
-        Returns:
-            str: The API endpoint to be used by the client.
-        """
-        if api_override is not None:
-            api_endpoint = api_override
-        elif use_mtls_endpoint == "always" or (
-            use_mtls_endpoint == "auto" and client_cert_source
-        ):
-            _default_universe = InstanceAdminClient._DEFAULT_UNIVERSE
-            if universe_domain != _default_universe:
-                raise MutualTLSChannelError(
-                    f"mTLS is not supported in any universe other than {_default_universe}."
-                )
-            api_endpoint = InstanceAdminClient.DEFAULT_MTLS_ENDPOINT
-        else:
-            api_endpoint = InstanceAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=universe_domain
-            )
-        return api_endpoint
-
-    @staticmethod
-    def _get_universe_domain(
-        client_universe_domain: Optional[str], universe_domain_env: Optional[str]
-    ) -> str:
-        """Return the universe domain used by the client.
-
-        Args:
-            client_universe_domain (Optional[str]): The universe domain configured via the client options.
-            universe_domain_env (Optional[str]): The universe domain configured via the "GOOGLE_CLOUD_UNIVERSE_DOMAIN" environment variable.
-
-        Returns:
-            str: The universe domain to be used by the client.
-
-        Raises:
-            ValueError: If the universe domain is an empty string.
-        """
-        universe_domain = InstanceAdminClient._DEFAULT_UNIVERSE
-        if client_universe_domain is not None:
-            universe_domain = client_universe_domain
-        elif universe_domain_env is not None:
-            universe_domain = universe_domain_env
-        if len(universe_domain.strip()) == 0:
-            raise ValueError("Universe Domain cannot be an empty string.")
-        return universe_domain
-
-    def _validate_universe_domain(self):
-        """Validates client's and credentials' universe domains are consistent.
-
-        Returns:
-            bool: True iff the configured universe domain is valid.
-
-        Raises:
-            ValueError: If the configured universe domain is not valid.
-        """
-
-        # NOTE (b/349488459): universe validation is disabled until further notice.
-        return True
-
-    def _add_cred_info_for_auth_errors(
-        self, error: core_exceptions.GoogleAPICallError
-    ) -> None:
-        """Adds credential info string to error details for 401/403/404 errors.
-
-        Args:
-            error (google.api_core.exceptions.GoogleAPICallError): The error to add the cred info.
-        """
-        if error.code not in [
-            HTTPStatus.UNAUTHORIZED,
-            HTTPStatus.FORBIDDEN,
-            HTTPStatus.NOT_FOUND,
-        ]:
-            return
-
-        cred = self._transport._credentials
-
-        # get_cred_info is only available in google-auth>=2.35.0
-        if not hasattr(cred, "get_cred_info"):
-            return
-
-        # ignore the type check since pypy test fails when get_cred_info
-        # is not available
-        cred_info = cred.get_cred_info()  # type: ignore
-        if cred_info and hasattr(error._details, "append"):
-            error._details.append(json.dumps(cred_info))
-
-    @property
-    def api_endpoint(self):
-        """Return the API endpoint used by the client instance.
-
-        Returns:
-            str: The API endpoint used by the client instance.
-        """
-        return self._api_endpoint
-
-    @property
-    def universe_domain(self) -> str:
-        """Return the universe domain used by the client instance.
-
-        Returns:
-            str: The universe domain used by the client instance.
-        """
-        return self._universe_domain
-
-    def __init__(
-        self,
-        *,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        transport: Optional[
-            Union[str, InstanceAdminTransport, Callable[..., InstanceAdminTransport]]
-        ] = None,
-        client_options: Optional[Union[client_options_lib.ClientOptions, dict]] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-    ) -> None:
-        """Instantiates the instance admin client.
-
-        Args:
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            transport (Optional[Union[str,InstanceAdminTransport,Callable[..., InstanceAdminTransport]]]):
-                The transport to use, or a Callable that constructs and returns a new transport.
-                If a Callable is given, it will be called with the same set of initialization
-                arguments as used in the InstanceAdminTransport constructor.
-                If set to None, a transport is chosen automatically.
-            client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]):
-                Custom options for the client.
-
-                1. The ``api_endpoint`` property can be used to override the
-                default endpoint provided by the client when ``transport`` is
-                not explicitly provided. Only if this property is not set and
-                ``transport`` was not explicitly provided, the endpoint is
-                determined by the GOOGLE_API_USE_MTLS_ENDPOINT environment
-                variable, which have one of the following values:
-                "always" (always use the default mTLS endpoint), "never" (always
-                use the default regular endpoint) and "auto" (auto-switch to the
-                default mTLS endpoint if client certificate is present; this is
-                the default value).
-
-                2. If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
-                is "true", then the ``client_cert_source`` property can be used
-                to provide a client certificate for mTLS transport. If
-                not provided, the default SSL client certificate will be used if
-                present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
-                set, no client certificate will be used.
-
-                3. The ``universe_domain`` property can be used to override the
-                default "googleapis.com" universe. Note that the ``api_endpoint``
-                property still takes precedence; and ``universe_domain`` is
-                currently not supported for mTLS.
-
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
-                creation failed for any reason.
-        """
-        self._client_options = client_options
-        if isinstance(self._client_options, dict):
-            self._client_options = client_options_lib.from_dict(self._client_options)
-        if self._client_options is None:
-            self._client_options = client_options_lib.ClientOptions()
-        self._client_options = cast(
-            client_options_lib.ClientOptions, self._client_options
-        )
-
-        universe_domain_opt = getattr(self._client_options, "universe_domain", None)
-
-        (
-            self._use_client_cert,
-            self._use_mtls_endpoint,
-            self._universe_domain_env,
-        ) = InstanceAdminClient._read_environment_variables()
-        self._client_cert_source = InstanceAdminClient._get_client_cert_source(
-            self._client_options.client_cert_source, self._use_client_cert
-        )
-        self._universe_domain = InstanceAdminClient._get_universe_domain(
-            universe_domain_opt, self._universe_domain_env
-        )
-        self._api_endpoint = None  # updated below, depending on `transport`
-
-        # Initialize the universe domain validation.
-        self._is_universe_domain_valid = False
-
-        if CLIENT_LOGGING_SUPPORTED:  # pragma: NO COVER
-            # Setup logging.
-            client_logging.initialize_logging()
-
-        api_key_value = getattr(self._client_options, "api_key", None)
-        if api_key_value and credentials:
-            raise ValueError(
-                "client_options.api_key and credentials are mutually exclusive"
-            )
-
-        # Save or instantiate the transport.
-        # Ordinarily, we provide the transport, but allowing a custom transport
-        # instance provides an extensibility point for unusual situations.
-        transport_provided = isinstance(transport, InstanceAdminTransport)
-        if transport_provided:
-            # transport is a InstanceAdminTransport instance.
-            if credentials or self._client_options.credentials_file or api_key_value:
-                raise ValueError(
-                    "When providing a transport instance, "
-                    "provide its credentials directly."
-                )
-            if self._client_options.scopes:
-                raise ValueError(
-                    "When providing a transport instance, provide its scopes "
-                    "directly."
-                )
-            self._transport = cast(InstanceAdminTransport, transport)
-            self._api_endpoint = self._transport.host
-
-        self._api_endpoint = (
-            self._api_endpoint
-            or InstanceAdminClient._get_api_endpoint(
-                self._client_options.api_endpoint,
-                self._client_cert_source,
-                self._universe_domain,
-                self._use_mtls_endpoint,
-            )
-        )
-
-        if not transport_provided:
-            import google.auth._default  # type: ignore
-
-            if api_key_value and hasattr(
-                google.auth._default, "get_api_key_credentials"
-            ):
-                credentials = google.auth._default.get_api_key_credentials(
-                    api_key_value
-                )
-
-            transport_init: Union[
-                Type[InstanceAdminTransport], Callable[..., InstanceAdminTransport]
-            ] = (
-                InstanceAdminClient.get_transport_class(transport)
-                if isinstance(transport, str) or transport is None
-                else cast(Callable[..., InstanceAdminTransport], transport)
-            )
-            # initialize with the provided callable or the passed in class
-            self._transport = transport_init(
-                credentials=credentials,
-                credentials_file=self._client_options.credentials_file,
-                host=self._api_endpoint,
-                scopes=self._client_options.scopes,
-                client_cert_source_for_mtls=self._client_cert_source,
-                quota_project_id=self._client_options.quota_project_id,
-                client_info=client_info,
-                always_use_jwt_access=True,
-                api_audience=self._client_options.api_audience,
-            )
-
-        if "async" not in str(self._transport):
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                std_logging.DEBUG
-            ):  # pragma: NO COVER
-                _LOGGER.debug(
-                    "Created client `google.spanner.admin.instance_v1.InstanceAdminClient`.",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "universeDomain": getattr(
-                            self._transport._credentials, "universe_domain", ""
-                        ),
-                        "credentialsType": f"{type(self._transport._credentials).__module__}.{type(self._transport._credentials).__qualname__}",
-                        "credentialsInfo": getattr(
-                            self.transport._credentials, "get_cred_info", lambda: None
-                        )(),
-                    }
-                    if hasattr(self._transport, "_credentials")
-                    else {
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "credentialsType": None,
-                    },
-                )
-
-    def list_instance_configs(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstanceConfigsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstanceConfigsPager:
-        r"""Lists the supported instance configurations for a
-        given project.
-        Returns both Google-managed configurations and
-        user-managed configurations.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_list_instance_configs():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstanceConfigsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_configs(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsRequest, dict]):
-                The request object. The request for
-                [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-            parent (str):
-                Required. The name of the project for which a list of
-                supported instance configurations is requested. Values
-                are of the form ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstanceConfigsPager:
-                The response for
-                   [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.ListInstanceConfigsRequest):
-            request = spanner_instance_admin.ListInstanceConfigsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_instance_configs]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListInstanceConfigsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.GetInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_instance_admin.InstanceConfig:
-        r"""Gets information about a particular instance
-        configuration.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_get_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.GetInstanceConfigRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = client.get_instance_config(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.GetInstanceConfigRequest, dict]):
-                The request object. The request for
-                [GetInstanceConfigRequest][google.spanner.admin.instance.v1.InstanceAdmin.GetInstanceConfig].
-            name (str):
-                Required. The name of the requested instance
-                configuration. Values are of the form
-                ``projects/<project>/instanceConfigs/<config>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.types.InstanceConfig:
-                A possible configuration for a Cloud
-                Spanner instance. Configurations define
-                the geographic placement of nodes and
-                their replication.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.GetInstanceConfigRequest):
-            request = spanner_instance_admin.GetInstanceConfigRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_instance_config]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def create_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.CreateInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        instance_config: Optional[spanner_instance_admin.InstanceConfig] = None,
-        instance_config_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Creates an instance configuration and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance configuration. The
-        instance configuration name is assigned by the caller. If the
-        named instance configuration already exists,
-        ``CreateInstanceConfig`` returns ``ALREADY_EXISTS``.
-
-        Immediately after the request returns:
-
-        - The instance configuration is readable via the API, with all
-          requested attributes. The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true. Its state is ``CREATING``.
-
-        While the operation is pending:
-
-        - Cancelling the operation renders the instance configuration
-          immediately unreadable via the API.
-        - Except for deleting the creating resource, all other attempts
-          to modify the instance configuration are rejected.
-
-        Upon completion of the returned operation:
-
-        - Instances can be created using the instance configuration.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false. Its state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track creation of the instance configuration. The
-        metadata field type is
-        [CreateInstanceConfigMetadata][google.spanner.admin.instance.v1.CreateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.create``
-        permission on the resource
-        [parent][google.spanner.admin.instance.v1.CreateInstanceConfigRequest.parent].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_create_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.CreateInstanceConfigRequest(
-                    parent="parent_value",
-                    instance_config_id="instance_config_id_value",
-                )
-
-                # Make the request
-                operation = client.create_instance_config(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.CreateInstanceConfigRequest, dict]):
-                The request object. The request for
-                [CreateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstanceConfig].
-            parent (str):
-                Required. The name of the project in which to create the
-                instance configuration. Values are of the form
-                ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_config (google.cloud.spanner_admin_instance_v1.types.InstanceConfig):
-                Required. The ``InstanceConfig`` proto of the
-                configuration to create. ``instance_config.name`` must
-                be ``<parent>/instanceConfigs/<instance_config_id>``.
-                ``instance_config.base_config`` must be a Google-managed
-                configuration name, e.g. /instanceConfigs/us-east1,
-                /instanceConfigs/nam3.
-
-                This corresponds to the ``instance_config`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_config_id (str):
-                Required. The ID of the instance configuration to
-                create. Valid identifiers are of the form
-                ``custom-[-a-z0-9]*[a-z0-9]`` and must be between 2 and
-                64 characters in length. The ``custom-`` prefix is
-                required to avoid name conflicts with Google-managed
-                configurations.
-
-                This corresponds to the ``instance_config_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstanceConfig` A possible configuration for a Cloud Spanner instance. Configurations
-                   define the geographic placement of nodes and their
-                   replication.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, instance_config, instance_config_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.CreateInstanceConfigRequest):
-            request = spanner_instance_admin.CreateInstanceConfigRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if instance_config is not None:
-                request.instance_config = instance_config
-            if instance_config_id is not None:
-                request.instance_config_id = instance_config_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.create_instance_config]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_instance_admin.InstanceConfig,
-            metadata_type=spanner_instance_admin.CreateInstanceConfigMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def update_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.UpdateInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        instance_config: Optional[spanner_instance_admin.InstanceConfig] = None,
-        update_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Updates an instance configuration. The returned long-running
-        operation can be used to track the progress of updating the
-        instance. If the named instance configuration does not exist,
-        returns ``NOT_FOUND``.
-
-        Only user-managed configurations can be updated.
-
-        Immediately after the request returns:
-
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true.
-
-        While the operation is pending:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata.cancel_time].
-          The operation is guaranteed to succeed at undoing all changes,
-          after which point it terminates with a ``CANCELLED`` status.
-        - All other attempts to modify the instance configuration are
-          rejected.
-        - Reading the instance configuration via the API continues to
-          give the pre-request values.
-
-        Upon completion of the returned operation:
-
-        - Creating instances using the instance configuration uses the
-          new values.
-        - The new values of the instance configuration are readable via
-          the API.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track the instance configuration modification.
-        The metadata field type is
-        [UpdateInstanceConfigMetadata][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_update_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.UpdateInstanceConfigRequest(
-                )
-
-                # Make the request
-                operation = client.update_instance_config(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.UpdateInstanceConfigRequest, dict]):
-                The request object. The request for
-                [UpdateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstanceConfig].
-            instance_config (google.cloud.spanner_admin_instance_v1.types.InstanceConfig):
-                Required. The user instance configuration to update,
-                which must always include the instance configuration
-                name. Otherwise, only fields mentioned in
-                [update_mask][google.spanner.admin.instance.v1.UpdateInstanceConfigRequest.update_mask]
-                need be included. To prevent conflicts of concurrent
-                updates,
-                [etag][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-                can be used.
-
-                This corresponds to the ``instance_config`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            update_mask (google.protobuf.field_mask_pb2.FieldMask):
-                Required. A mask specifying which fields in
-                [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-                should be updated. The field mask must always be
-                specified; this prevents any future fields in
-                [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-                from being erased accidentally by clients that do not
-                know about them. Only display_name and labels can be
-                updated.
-
-                This corresponds to the ``update_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstanceConfig` A possible configuration for a Cloud Spanner instance. Configurations
-                   define the geographic placement of nodes and their
-                   replication.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [instance_config, update_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.UpdateInstanceConfigRequest):
-            request = spanner_instance_admin.UpdateInstanceConfigRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if instance_config is not None:
-                request.instance_config = instance_config
-            if update_mask is not None:
-                request.update_mask = update_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.update_instance_config]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("instance_config.name", request.instance_config.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_instance_admin.InstanceConfig,
-            metadata_type=spanner_instance_admin.UpdateInstanceConfigMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def delete_instance_config(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.DeleteInstanceConfigRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes the instance configuration. Deletion is only allowed
-        when no instances are using the configuration. If any instances
-        are using the configuration, returns ``FAILED_PRECONDITION``.
-
-        Only user-managed configurations can be deleted.
-
-        Authorization requires ``spanner.instanceConfigs.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_delete_instance_config():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.DeleteInstanceConfigRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                client.delete_instance_config(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.DeleteInstanceConfigRequest, dict]):
-                The request object. The request for
-                [DeleteInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstanceConfig].
-            name (str):
-                Required. The name of the instance configuration to be
-                deleted. Values are of the form
-                ``projects/<project>/instanceConfigs/<instance_config>``
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.DeleteInstanceConfigRequest):
-            request = spanner_instance_admin.DeleteInstanceConfigRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.delete_instance_config]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def list_instance_config_operations(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstanceConfigOperationsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstanceConfigOperationsPager:
-        r"""Lists the user-managed instance configuration long-running
-        operations in the given project. An instance configuration
-        operation has a name of the form
-        ``projects/<project>/instanceConfigs/<instance_config>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_list_instance_config_operations():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstanceConfigOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_config_operations(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsRequest, dict]):
-                The request object. The request for
-                [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-            parent (str):
-                Required. The project of the instance configuration
-                operations. Values are of the form
-                ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstanceConfigOperationsPager:
-                The response for
-                   [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.ListInstanceConfigOperationsRequest
-        ):
-            request = spanner_instance_admin.ListInstanceConfigOperationsRequest(
-                request
-            )
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[
-            self._transport.list_instance_config_operations
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListInstanceConfigOperationsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def list_instances(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstancesRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstancesPager:
-        r"""Lists all instances in the given project.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_list_instances():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstancesRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instances(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.ListInstancesRequest, dict]):
-                The request object. The request for
-                [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-            parent (str):
-                Required. The name of the project for which a list of
-                instances is requested. Values are of the form
-                ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstancesPager:
-                The response for
-                   [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.ListInstancesRequest):
-            request = spanner_instance_admin.ListInstancesRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_instances]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListInstancesPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def list_instance_partitions(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstancePartitionsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstancePartitionsPager:
-        r"""Lists all instance partitions for the given instance.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_list_instance_partitions():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstancePartitionsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_partitions(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsRequest, dict]):
-                The request object. The request for
-                [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-            parent (str):
-                Required. The instance whose instance partitions should
-                be listed. Values are of the form
-                ``projects/<project>/instances/<instance>``. Use
-                ``{instance} = '-'`` to list instance partitions for all
-                Instances in a project, e.g.,
-                ``projects/myproject/instances/-``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstancePartitionsPager:
-                The response for
-                   [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.ListInstancePartitionsRequest
-        ):
-            request = spanner_instance_admin.ListInstancePartitionsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_instance_partitions]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListInstancePartitionsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.GetInstanceRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_instance_admin.Instance:
-        r"""Gets information about a particular instance.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_get_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.GetInstanceRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = client.get_instance(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.GetInstanceRequest, dict]):
-                The request object. The request for
-                [GetInstance][google.spanner.admin.instance.v1.InstanceAdmin.GetInstance].
-            name (str):
-                Required. The name of the requested instance. Values are
-                of the form ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.types.Instance:
-                An isolated set of Cloud Spanner
-                resources on which databases can be
-                hosted.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.GetInstanceRequest):
-            request = spanner_instance_admin.GetInstanceRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_instance]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def create_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.CreateInstanceRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        instance_id: Optional[str] = None,
-        instance: Optional[spanner_instance_admin.Instance] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Creates an instance and begins preparing it to begin serving.
-        The returned long-running operation can be used to track the
-        progress of preparing the new instance. The instance name is
-        assigned by the caller. If the named instance already exists,
-        ``CreateInstance`` returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance is readable via the API, with all requested
-          attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance immediately
-          unreadable via the API.
-        - The instance can be deleted.
-        - All other attempts to modify the instance are rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can be created in the instance.
-        - The instance's allocated resource levels are readable via the
-          API.
-        - The instance's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track creation of the instance. The metadata field type
-        is
-        [CreateInstanceMetadata][google.spanner.admin.instance.v1.CreateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_create_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                instance = spanner_admin_instance_v1.Instance()
-                instance.name = "name_value"
-                instance.config = "config_value"
-                instance.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.CreateInstanceRequest(
-                    parent="parent_value",
-                    instance_id="instance_id_value",
-                    instance=instance,
-                )
-
-                # Make the request
-                operation = client.create_instance(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.CreateInstanceRequest, dict]):
-                The request object. The request for
-                [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance].
-            parent (str):
-                Required. The name of the project in which to create the
-                instance. Values are of the form ``projects/<project>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_id (str):
-                Required. The ID of the instance to create. Valid
-                identifiers are of the form ``[a-z][-a-z0-9]*[a-z0-9]``
-                and must be between 2 and 64 characters in length.
-
-                This corresponds to the ``instance_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance (google.cloud.spanner_admin_instance_v1.types.Instance):
-                Required. The instance to create. The name may be
-                omitted, but if specified must be
-                ``<parent>/instances/<instance_id>``.
-
-                This corresponds to the ``instance`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_instance_v1.types.Instance`
-                An isolated set of Cloud Spanner resources on which
-                databases can be hosted.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, instance_id, instance]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.CreateInstanceRequest):
-            request = spanner_instance_admin.CreateInstanceRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if instance_id is not None:
-                request.instance_id = instance_id
-            if instance is not None:
-                request.instance = instance
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.create_instance]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_instance_admin.Instance,
-            metadata_type=spanner_instance_admin.CreateInstanceMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def update_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.UpdateInstanceRequest, dict]
-        ] = None,
-        *,
-        instance: Optional[spanner_instance_admin.Instance] = None,
-        field_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Updates an instance, and begins allocating or releasing
-        resources as requested. The returned long-running operation can
-        be used to track the progress of updating the instance. If the
-        named instance does not exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance's
-          allocation has been requested, billing is based on the
-          newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance are rejected.
-        - Reading the instance via the API continues to give the
-          pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance's tables.
-        - The instance's new resource levels are readable via the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track the instance modification. The metadata field type
-        is
-        [UpdateInstanceMetadata][google.spanner.admin.instance.v1.UpdateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        Authorization requires ``spanner.instances.update`` permission
-        on the resource
-        [name][google.spanner.admin.instance.v1.Instance.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_update_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                instance = spanner_admin_instance_v1.Instance()
-                instance.name = "name_value"
-                instance.config = "config_value"
-                instance.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.UpdateInstanceRequest(
-                    instance=instance,
-                )
-
-                # Make the request
-                operation = client.update_instance(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.UpdateInstanceRequest, dict]):
-                The request object. The request for
-                [UpdateInstance][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstance].
-            instance (google.cloud.spanner_admin_instance_v1.types.Instance):
-                Required. The instance to update, which must always
-                include the instance name. Otherwise, only fields
-                mentioned in
-                [field_mask][google.spanner.admin.instance.v1.UpdateInstanceRequest.field_mask]
-                need be included.
-
-                This corresponds to the ``instance`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            field_mask (google.protobuf.field_mask_pb2.FieldMask):
-                Required. A mask specifying which fields in
-                [Instance][google.spanner.admin.instance.v1.Instance]
-                should be updated. The field mask must always be
-                specified; this prevents any future fields in
-                [Instance][google.spanner.admin.instance.v1.Instance]
-                from being erased accidentally by clients that do not
-                know about them.
-
-                This corresponds to the ``field_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be
-                :class:`google.cloud.spanner_admin_instance_v1.types.Instance`
-                An isolated set of Cloud Spanner resources on which
-                databases can be hosted.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [instance, field_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.UpdateInstanceRequest):
-            request = spanner_instance_admin.UpdateInstanceRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if instance is not None:
-                request.instance = instance
-            if field_mask is not None:
-                request.field_mask = field_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.update_instance]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("instance.name", request.instance.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_instance_admin.Instance,
-            metadata_type=spanner_instance_admin.UpdateInstanceMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def delete_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.DeleteInstanceRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes an instance.
-
-        Immediately upon completion of the request:
-
-        - Billing ceases for all of the instance's reserved resources.
-
-        Soon afterward:
-
-        - The instance and *all of its databases* immediately and
-          irrevocably disappear from the API. All data in the databases
-          is permanently deleted.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_delete_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.DeleteInstanceRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                client.delete_instance(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.DeleteInstanceRequest, dict]):
-                The request object. The request for
-                [DeleteInstance][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstance].
-            name (str):
-                Required. The name of the instance to be deleted. Values
-                are of the form
-                ``projects/<project>/instances/<instance>``
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.DeleteInstanceRequest):
-            request = spanner_instance_admin.DeleteInstanceRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.delete_instance]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def set_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.SetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Sets the access control policy on an instance resource. Replaces
-        any existing policy.
-
-        Authorization requires ``spanner.instances.setIamPolicy`` on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            def sample_set_iam_policy():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.SetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = client.set_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.iam.v1.iam_policy_pb2.SetIamPolicyRequest, dict]):
-                The request object. Request message for ``SetIamPolicy`` method.
-            resource (str):
-                REQUIRED: The resource for which the
-                policy is being specified. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        if isinstance(request, dict):
-            # - The request isn't a proto-plus wrapped type,
-            #   so it must be constructed via keyword expansion.
-            request = iam_policy_pb2.SetIamPolicyRequest(**request)
-        elif not request:
-            # Null request, just make one.
-            request = iam_policy_pb2.SetIamPolicyRequest()
-            if resource is not None:
-                request.resource = resource
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.set_iam_policy]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_iam_policy(
-        self,
-        request: Optional[Union[iam_policy_pb2.GetIamPolicyRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> policy_pb2.Policy:
-        r"""Gets the access control policy for an instance resource. Returns
-        an empty policy if an instance exists but does not have a policy
-        set.
-
-        Authorization requires ``spanner.instances.getIamPolicy`` on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            def sample_get_iam_policy():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.GetIamPolicyRequest(
-                    resource="resource_value",
-                )
-
-                # Make the request
-                response = client.get_iam_policy(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.iam.v1.iam_policy_pb2.GetIamPolicyRequest, dict]):
-                The request object. Request message for ``GetIamPolicy`` method.
-            resource (str):
-                REQUIRED: The resource for which the
-                policy is being requested. See the
-                operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.policy_pb2.Policy:
-                An Identity and Access Management (IAM) policy, which specifies access
-                   controls for Google Cloud resources.
-
-                   A Policy is a collection of bindings. A binding binds
-                   one or more members, or principals, to a single role.
-                   Principals can be user accounts, service accounts,
-                   Google groups, and domains (such as G Suite). A role
-                   is a named list of permissions; each role can be an
-                   IAM predefined role or a user-created custom role.
-
-                   For some types of Google Cloud resources, a binding
-                   can also specify a condition, which is a logical
-                   expression that allows access to a resource only if
-                   the expression evaluates to true. A condition can add
-                   constraints based on attributes of the request, the
-                   resource, or both. To learn which resources support
-                   conditions in their IAM policies, see the [IAM
-                   documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
-
-                   **JSON example:**
-
-                   :literal:``     {       "bindings": [         {           "role": "roles/resourcemanager.organizationAdmin",           "members": [             "user:mike@example.com",             "group:admins@example.com",             "domain:google.com",             "serviceAccount:my-project-id@appspot.gserviceaccount.com"           ]         },         {           "role": "roles/resourcemanager.organizationViewer",           "members": [             "user:eve@example.com"           ],           "condition": {             "title": "expirable access",             "description": "Does not grant access after Sep 2020",             "expression": "request.time <             timestamp('2020-10-01T00:00:00.000Z')",           }         }       ],       "etag": "BwWWja0YfJA=",       "version": 3     }`\ \`
-
-                   **YAML example:**
-
-                   :literal:``     bindings:     - members:       - user:mike@example.com       - group:admins@example.com       - domain:google.com       - serviceAccount:my-project-id@appspot.gserviceaccount.com       role: roles/resourcemanager.organizationAdmin     - members:       - user:eve@example.com       role: roles/resourcemanager.organizationViewer       condition:         title: expirable access         description: Does not grant access after Sep 2020         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')     etag: BwWWja0YfJA=     version: 3`\ \`
-
-                   For a description of IAM and its features, see the
-                   [IAM
-                   documentation](https://cloud.google.com/iam/docs/).
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        if isinstance(request, dict):
-            # - The request isn't a proto-plus wrapped type,
-            #   so it must be constructed via keyword expansion.
-            request = iam_policy_pb2.GetIamPolicyRequest(**request)
-        elif not request:
-            # Null request, just make one.
-            request = iam_policy_pb2.GetIamPolicyRequest()
-            if resource is not None:
-                request.resource = resource
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_iam_policy]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def test_iam_permissions(
-        self,
-        request: Optional[Union[iam_policy_pb2.TestIamPermissionsRequest, dict]] = None,
-        *,
-        resource: Optional[str] = None,
-        permissions: Optional[MutableSequence[str]] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> iam_policy_pb2.TestIamPermissionsResponse:
-        r"""Returns permissions that the caller has on the specified
-        instance resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner instance
-        resource will result in a NOT_FOUND error if the user has
-        ``spanner.instances.list`` permission on the containing Google
-        Cloud Project. Otherwise returns an empty set of permissions.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-            from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-            def sample_test_iam_permissions():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = iam_policy_pb2.TestIamPermissionsRequest(
-                    resource="resource_value",
-                    permissions=['permissions_value1', 'permissions_value2'],
-                )
-
-                # Make the request
-                response = client.test_iam_permissions(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.iam.v1.iam_policy_pb2.TestIamPermissionsRequest, dict]):
-                The request object. Request message for ``TestIamPermissions`` method.
-            resource (str):
-                REQUIRED: The resource for which the
-                policy detail is being requested. See
-                the operation documentation for the
-                appropriate value for this field.
-
-                This corresponds to the ``resource`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            permissions (MutableSequence[str]):
-                The set of permissions to check for the ``resource``.
-                Permissions with wildcards (such as '*' or 'storage.*')
-                are not allowed. For more information see `IAM
-                Overview <https://cloud.google.com/iam/docs/overview#permissions>`__.
-
-                This corresponds to the ``permissions`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.iam.v1.iam_policy_pb2.TestIamPermissionsResponse:
-                Response message for TestIamPermissions method.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [resource, permissions]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        if isinstance(request, dict):
-            # - The request isn't a proto-plus wrapped type,
-            #   so it must be constructed via keyword expansion.
-            request = iam_policy_pb2.TestIamPermissionsRequest(**request)
-        elif not request:
-            # Null request, just make one.
-            request = iam_policy_pb2.TestIamPermissionsRequest()
-            if resource is not None:
-                request.resource = resource
-            if permissions:
-                request.permissions.extend(permissions)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.test_iam_permissions]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.GetInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner_instance_admin.InstancePartition:
-        r"""Gets information about a particular instance
-        partition.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_get_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.GetInstancePartitionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = client.get_instance_partition(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.GetInstancePartitionRequest, dict]):
-                The request object. The request for
-                [GetInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.GetInstancePartition].
-            name (str):
-                Required. The name of the requested instance partition.
-                Values are of the form
-                ``projects/{project}/instances/{instance}/instancePartitions/{instance_partition}``.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.types.InstancePartition:
-                An isolated set of Cloud Spanner
-                resources that databases can define
-                placements on.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.GetInstancePartitionRequest):
-            request = spanner_instance_admin.GetInstancePartitionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_instance_partition]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def create_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.CreateInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        instance_partition: Optional[spanner_instance_admin.InstancePartition] = None,
-        instance_partition_id: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Creates an instance partition and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance partition. The
-        instance partition name is assigned by the caller. If the named
-        instance partition already exists, ``CreateInstancePartition``
-        returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance partition is readable via the API, with all
-          requested attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance partition
-          immediately unreadable via the API.
-        - The instance partition can be deleted.
-        - All other attempts to modify the instance partition are
-          rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can start using this instance partition.
-        - The instance partition's allocated resource levels are
-          readable via the API.
-        - The instance partition's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track creation of the instance partition. The
-        metadata field type is
-        [CreateInstancePartitionMetadata][google.spanner.admin.instance.v1.CreateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_create_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                instance_partition = spanner_admin_instance_v1.InstancePartition()
-                instance_partition.node_count = 1070
-                instance_partition.name = "name_value"
-                instance_partition.config = "config_value"
-                instance_partition.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.CreateInstancePartitionRequest(
-                    parent="parent_value",
-                    instance_partition_id="instance_partition_id_value",
-                    instance_partition=instance_partition,
-                )
-
-                # Make the request
-                operation = client.create_instance_partition(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.CreateInstancePartitionRequest, dict]):
-                The request object. The request for
-                [CreateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstancePartition].
-            parent (str):
-                Required. The name of the instance in which to create
-                the instance partition. Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_partition (google.cloud.spanner_admin_instance_v1.types.InstancePartition):
-                Required. The instance partition to create. The
-                instance_partition.name may be omitted, but if specified
-                must be
-                ``<parent>/instancePartitions/<instance_partition_id>``.
-
-                This corresponds to the ``instance_partition`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            instance_partition_id (str):
-                Required. The ID of the instance partition to create.
-                Valid identifiers are of the form
-                ``[a-z][-a-z0-9]*[a-z0-9]`` and must be between 2 and 64
-                characters in length.
-
-                This corresponds to the ``instance_partition_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstancePartition` An isolated set of Cloud Spanner resources that databases can define
-                   placements on.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent, instance_partition, instance_partition_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.CreateInstancePartitionRequest
-        ):
-            request = spanner_instance_admin.CreateInstancePartitionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-            if instance_partition is not None:
-                request.instance_partition = instance_partition
-            if instance_partition_id is not None:
-                request.instance_partition_id = instance_partition_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[
-            self._transport.create_instance_partition
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_instance_admin.InstancePartition,
-            metadata_type=spanner_instance_admin.CreateInstancePartitionMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def delete_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.DeleteInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes an existing instance partition. Requires that the
-        instance partition is not used by any database or backup and is
-        not the default instance partition of an instance.
-
-        Authorization requires ``spanner.instancePartitions.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_delete_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.DeleteInstancePartitionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                client.delete_instance_partition(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.DeleteInstancePartitionRequest, dict]):
-                The request object. The request for
-                [DeleteInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstancePartition].
-            name (str):
-                Required. The name of the instance partition to be
-                deleted. Values are of the form
-                ``projects/{project}/instances/{instance}/instancePartitions/{instance_partition}``
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.DeleteInstancePartitionRequest
-        ):
-            request = spanner_instance_admin.DeleteInstancePartitionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[
-            self._transport.delete_instance_partition
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def update_instance_partition(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.UpdateInstancePartitionRequest, dict]
-        ] = None,
-        *,
-        instance_partition: Optional[spanner_instance_admin.InstancePartition] = None,
-        field_mask: Optional[field_mask_pb2.FieldMask] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Updates an instance partition, and begins allocating or
-        releasing resources as requested. The returned long-running
-        operation can be used to track the progress of updating the
-        instance partition. If the named instance partition does not
-        exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance
-          partition's allocation has been requested, billing is based on
-          the newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance partition are
-          rejected.
-        - Reading the instance partition via the API continues to give
-          the pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance partition's tables.
-        - The instance partition's new resource levels are readable via
-          the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track the instance partition modification.
-        The metadata field type is
-        [UpdateInstancePartitionMetadata][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        Authorization requires ``spanner.instancePartitions.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_update_instance_partition():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                instance_partition = spanner_admin_instance_v1.InstancePartition()
-                instance_partition.node_count = 1070
-                instance_partition.name = "name_value"
-                instance_partition.config = "config_value"
-                instance_partition.display_name = "display_name_value"
-
-                request = spanner_admin_instance_v1.UpdateInstancePartitionRequest(
-                    instance_partition=instance_partition,
-                )
-
-                # Make the request
-                operation = client.update_instance_partition(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.UpdateInstancePartitionRequest, dict]):
-                The request object. The request for
-                [UpdateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstancePartition].
-            instance_partition (google.cloud.spanner_admin_instance_v1.types.InstancePartition):
-                Required. The instance partition to update, which must
-                always include the instance partition name. Otherwise,
-                only fields mentioned in
-                [field_mask][google.spanner.admin.instance.v1.UpdateInstancePartitionRequest.field_mask]
-                need be included.
-
-                This corresponds to the ``instance_partition`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            field_mask (google.protobuf.field_mask_pb2.FieldMask):
-                Required. A mask specifying which fields in
-                [InstancePartition][google.spanner.admin.instance.v1.InstancePartition]
-                should be updated. The field mask must always be
-                specified; this prevents any future fields in
-                [InstancePartition][google.spanner.admin.instance.v1.InstancePartition]
-                from being erased accidentally by clients that do not
-                know about them.
-
-                This corresponds to the ``field_mask`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.InstancePartition` An isolated set of Cloud Spanner resources that databases can define
-                   placements on.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [instance_partition, field_mask]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.UpdateInstancePartitionRequest
-        ):
-            request = spanner_instance_admin.UpdateInstancePartitionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if instance_partition is not None:
-                request.instance_partition = instance_partition
-            if field_mask is not None:
-                request.field_mask = field_mask
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[
-            self._transport.update_instance_partition
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata(
-                (("instance_partition.name", request.instance_partition.name),)
-            ),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_instance_admin.InstancePartition,
-            metadata_type=spanner_instance_admin.UpdateInstancePartitionMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def list_instance_partition_operations(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.ListInstancePartitionOperationsRequest, dict]
-        ] = None,
-        *,
-        parent: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListInstancePartitionOperationsPager:
-        r"""Lists instance partition long-running operations in the given
-        instance. An instance partition operation has a name of the form
-        ``projects/<project>/instances/<instance>/instancePartitions/<instance_partition>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        Authorization requires
-        ``spanner.instancePartitionOperations.list`` permission on the
-        resource
-        [parent][google.spanner.admin.instance.v1.ListInstancePartitionOperationsRequest.parent].
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_list_instance_partition_operations():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.ListInstancePartitionOperationsRequest(
-                    parent="parent_value",
-                )
-
-                # Make the request
-                page_result = client.list_instance_partition_operations(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsRequest, dict]):
-                The request object. The request for
-                [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-            parent (str):
-                Required. The parent instance of the instance partition
-                operations. Values are of the form
-                ``projects/<project>/instances/<instance>``.
-
-                This corresponds to the ``parent`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_admin_instance_v1.services.instance_admin.pagers.ListInstancePartitionOperationsPager:
-                The response for
-                   [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [parent]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(
-            request, spanner_instance_admin.ListInstancePartitionOperationsRequest
-        ):
-            request = spanner_instance_admin.ListInstancePartitionOperationsRequest(
-                request
-            )
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if parent is not None:
-                request.parent = parent
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[
-            self._transport.list_instance_partition_operations
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", request.parent),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListInstancePartitionOperationsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def move_instance(
-        self,
-        request: Optional[
-            Union[spanner_instance_admin.MoveInstanceRequest, dict]
-        ] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operation.Operation:
-        r"""Moves an instance to the target instance configuration. You can
-        use the returned long-running operation to track the progress of
-        moving the instance.
-
-        ``MoveInstance`` returns ``FAILED_PRECONDITION`` if the instance
-        meets any of the following criteria:
-
-        - Is undergoing a move to a different instance configuration
-        - Has backups
-        - Has an ongoing update
-        - Contains any CMEK-enabled databases
-        - Is a free trial instance
-
-        While the operation is pending:
-
-        - All other attempts to modify the instance, including changes
-          to its compute capacity, are rejected.
-
-        - The following database and backup admin operations are
-          rejected:
-
-          - ``DatabaseAdmin.CreateDatabase``
-          - ``DatabaseAdmin.UpdateDatabaseDdl`` (disabled if
-            default_leader is specified in the request.)
-          - ``DatabaseAdmin.RestoreDatabase``
-          - ``DatabaseAdmin.CreateBackup``
-          - ``DatabaseAdmin.CopyBackup``
-
-        - Both the source and target instance configurations are subject
-          to hourly compute and storage charges.
-
-        - The instance might experience higher read-write latencies and
-          a higher transaction abort rate. However, moving an instance
-          doesn't cause any downtime.
-
-        The returned long-running operation has a name of the format
-        ``<instance_name>/operations/<operation_id>`` and can be used to
-        track the move instance operation. The metadata field type is
-        [MoveInstanceMetadata][google.spanner.admin.instance.v1.MoveInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful. Cancelling the operation sets its metadata's
-        [cancel_time][google.spanner.admin.instance.v1.MoveInstanceMetadata.cancel_time].
-        Cancellation is not immediate because it involves moving any
-        data previously moved to the target instance configuration back
-        to the original instance configuration. You can use this
-        operation to track the progress of the cancellation. Upon
-        successful completion of the cancellation, the operation
-        terminates with ``CANCELLED`` status.
-
-        If not cancelled, upon completion of the returned operation:
-
-        - The instance successfully moves to the target instance
-          configuration.
-        - You are billed for compute and storage in target instance
-          configuration.
-
-        Authorization requires the ``spanner.instances.update``
-        permission on the resource
-        [instance][google.spanner.admin.instance.v1.Instance].
-
-        For more details, see `Move an
-        instance <https://cloud.google.com/spanner/docs/move-instance>`__.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_admin_instance_v1
-
-            def sample_move_instance():
-                # Create a client
-                client = spanner_admin_instance_v1.InstanceAdminClient()
-
-                # Initialize request argument(s)
-                request = spanner_admin_instance_v1.MoveInstanceRequest(
-                    name="name_value",
-                    target_config="target_config_value",
-                )
-
-                # Make the request
-                operation = client.move_instance(request=request)
-
-                print("Waiting for operation to complete...")
-
-                response = operation.result()
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_admin_instance_v1.types.MoveInstanceRequest, dict]):
-                The request object. The request for
-                [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.api_core.operation.Operation:
-                An object representing a long-running operation.
-
-                The result type for the operation will be :class:`google.cloud.spanner_admin_instance_v1.types.MoveInstanceResponse` The response for
-                   [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner_instance_admin.MoveInstanceRequest):
-            request = spanner_instance_admin.MoveInstanceRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.move_instance]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Wrap the response in an operation future.
-        response = operation.from_gapic(
-            response,
-            self._transport.operations_client,
-            spanner_instance_admin.MoveInstanceResponse,
-            metadata_type=spanner_instance_admin.MoveInstanceMetadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def __enter__(self) -> "InstanceAdminClient":
-        return self
-
-    def __exit__(self, type, value, traceback):
-        """Releases underlying transport's resources.
-
-        .. warning::
-            ONLY use as a context manager if the transport is NOT shared
-            with other clients! Exiting the with block will CLOSE the transport
-            and may cause errors in other clients!
-        """
-        self.transport.close()
-
-    def list_operations(
-        self,
-        request: Optional[operations_pb2.ListOperationsRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.ListOperationsResponse:
-        r"""Lists operations that match the specified filter in the request.
-
-        Args:
-            request (:class:`~.operations_pb2.ListOperationsRequest`):
-                The request object. Request message for
-                `ListOperations` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.ListOperationsResponse:
-                Response message for ``ListOperations`` method.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.ListOperationsRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_operations]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        try:
-            # Send the request.
-            response = rpc(
-                request,
-                retry=retry,
-                timeout=timeout,
-                metadata=metadata,
-            )
-
-            # Done; return the response.
-            return response
-        except core_exceptions.GoogleAPICallError as e:
-            self._add_cred_info_for_auth_errors(e)
-            raise e
-
-    def get_operation(
-        self,
-        request: Optional[operations_pb2.GetOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> operations_pb2.Operation:
-        r"""Gets the latest state of a long-running operation.
-
-        Args:
-            request (:class:`~.operations_pb2.GetOperationRequest`):
-                The request object. Request message for
-                `GetOperation` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            ~.operations_pb2.Operation:
-                An ``Operation`` object.
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.GetOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        try:
-            # Send the request.
-            response = rpc(
-                request,
-                retry=retry,
-                timeout=timeout,
-                metadata=metadata,
-            )
-
-            # Done; return the response.
-            return response
-        except core_exceptions.GoogleAPICallError as e:
-            self._add_cred_info_for_auth_errors(e)
-            raise e
-
-    def delete_operation(
-        self,
-        request: Optional[operations_pb2.DeleteOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Deletes a long-running operation.
-
-        This method indicates that the client is no longer interested
-        in the operation result. It does not cancel the operation.
-        If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.DeleteOperationRequest`):
-                The request object. Request message for
-                `DeleteOperation` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.DeleteOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.delete_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def cancel_operation(
-        self,
-        request: Optional[operations_pb2.CancelOperationRequest] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Starts asynchronous cancellation on a long-running operation.
-
-        The server makes a best effort to cancel the operation, but success
-        is not guaranteed.  If the server doesn't support this method, it returns
-        `google.rpc.Code.UNIMPLEMENTED`.
-
-        Args:
-            request (:class:`~.operations_pb2.CancelOperationRequest`):
-                The request object. Request message for
-                `CancelOperation` method.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                    if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        Returns:
-            None
-        """
-        # Create or coerce a protobuf request object.
-        # The request isn't a proto-plus wrapped type,
-        # so it must be constructed via keyword expansion.
-        if isinstance(request, dict):
-            request = operations_pb2.CancelOperationRequest(**request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.cancel_operation]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-__all__ = ("InstanceAdminClient",)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/pagers.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/pagers.py
deleted file mode 100644
index f5874ca213..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/pagers.py
+++ /dev/null
@@ -1,858 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from typing import (
-    Any,
-    AsyncIterator,
-    Awaitable,
-    Callable,
-    Iterator,
-    Optional,
-    Sequence,
-    Tuple,
-    Union,
-)
-
-from google.api_core import gapic_v1
-from google.api_core import retry as retries
-from google.api_core import retry_async as retries_async
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-    OptionalAsyncRetry = Union[
-        retries_async.AsyncRetry, gapic_v1.method._MethodDefault, None
-    ]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-    OptionalAsyncRetry = Union[retries_async.AsyncRetry, object, None]  # type: ignore
-
-from google.longrunning import operations_pb2  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-
-class ListInstanceConfigsPager:
-    """A pager for iterating through ``list_instance_configs`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``instance_configs`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListInstanceConfigs`` requests and continue to iterate
-    through the ``instance_configs`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., spanner_instance_admin.ListInstanceConfigsResponse],
-        request: spanner_instance_admin.ListInstanceConfigsRequest,
-        response: spanner_instance_admin.ListInstanceConfigsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstanceConfigsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[spanner_instance_admin.ListInstanceConfigsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[spanner_instance_admin.InstanceConfig]:
-        for page in self.pages:
-            yield from page.instance_configs
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstanceConfigsAsyncPager:
-    """A pager for iterating through ``list_instance_configs`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``instance_configs`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListInstanceConfigs`` requests and continue to iterate
-    through the ``instance_configs`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ..., Awaitable[spanner_instance_admin.ListInstanceConfigsResponse]
-        ],
-        request: spanner_instance_admin.ListInstanceConfigsRequest,
-        response: spanner_instance_admin.ListInstanceConfigsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstanceConfigsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_instance_admin.ListInstanceConfigsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[spanner_instance_admin.InstanceConfig]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.instance_configs:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstanceConfigOperationsPager:
-    """A pager for iterating through ``list_instance_config_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListInstanceConfigOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ..., spanner_instance_admin.ListInstanceConfigOperationsResponse
-        ],
-        request: spanner_instance_admin.ListInstanceConfigOperationsRequest,
-        response: spanner_instance_admin.ListInstanceConfigOperationsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstanceConfigOperationsRequest(
-            request
-        )
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(
-        self,
-    ) -> Iterator[spanner_instance_admin.ListInstanceConfigOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[operations_pb2.Operation]:
-        for page in self.pages:
-            yield from page.operations
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstanceConfigOperationsAsyncPager:
-    """A pager for iterating through ``list_instance_config_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListInstanceConfigOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ..., Awaitable[spanner_instance_admin.ListInstanceConfigOperationsResponse]
-        ],
-        request: spanner_instance_admin.ListInstanceConfigOperationsRequest,
-        response: spanner_instance_admin.ListInstanceConfigOperationsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstanceConfigOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstanceConfigOperationsRequest(
-            request
-        )
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_instance_admin.ListInstanceConfigOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[operations_pb2.Operation]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.operations:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstancesPager:
-    """A pager for iterating through ``list_instances`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancesResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``instances`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListInstances`` requests and continue to iterate
-    through the ``instances`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., spanner_instance_admin.ListInstancesResponse],
-        request: spanner_instance_admin.ListInstancesRequest,
-        response: spanner_instance_admin.ListInstancesResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstancesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstancesResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstancesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[spanner_instance_admin.ListInstancesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[spanner_instance_admin.Instance]:
-        for page in self.pages:
-            yield from page.instances
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstancesAsyncPager:
-    """A pager for iterating through ``list_instances`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancesResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``instances`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListInstances`` requests and continue to iterate
-    through the ``instances`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancesResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., Awaitable[spanner_instance_admin.ListInstancesResponse]],
-        request: spanner_instance_admin.ListInstancesRequest,
-        response: spanner_instance_admin.ListInstancesResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstancesRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstancesResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstancesRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_instance_admin.ListInstancesResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[spanner_instance_admin.Instance]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.instances:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstancePartitionsPager:
-    """A pager for iterating through ``list_instance_partitions`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``instance_partitions`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListInstancePartitions`` requests and continue to iterate
-    through the ``instance_partitions`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., spanner_instance_admin.ListInstancePartitionsResponse],
-        request: spanner_instance_admin.ListInstancePartitionsRequest,
-        response: spanner_instance_admin.ListInstancePartitionsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstancePartitionsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[spanner_instance_admin.ListInstancePartitionsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[spanner_instance_admin.InstancePartition]:
-        for page in self.pages:
-            yield from page.instance_partitions
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstancePartitionsAsyncPager:
-    """A pager for iterating through ``list_instance_partitions`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``instance_partitions`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListInstancePartitions`` requests and continue to iterate
-    through the ``instance_partitions`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ..., Awaitable[spanner_instance_admin.ListInstancePartitionsResponse]
-        ],
-        request: spanner_instance_admin.ListInstancePartitionsRequest,
-        response: spanner_instance_admin.ListInstancePartitionsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstancePartitionsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_instance_admin.ListInstancePartitionsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[spanner_instance_admin.InstancePartition]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.instance_partitions:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstancePartitionOperationsPager:
-    """A pager for iterating through ``list_instance_partition_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListInstancePartitionOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ..., spanner_instance_admin.ListInstancePartitionOperationsResponse
-        ],
-        request: spanner_instance_admin.ListInstancePartitionOperationsRequest,
-        response: spanner_instance_admin.ListInstancePartitionOperationsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstancePartitionOperationsRequest(
-            request
-        )
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(
-        self,
-    ) -> Iterator[spanner_instance_admin.ListInstancePartitionOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[operations_pb2.Operation]:
-        for page in self.pages:
-            yield from page.operations
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListInstancePartitionOperationsAsyncPager:
-    """A pager for iterating through ``list_instance_partition_operations`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``operations`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListInstancePartitionOperations`` requests and continue to iterate
-    through the ``operations`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[
-            ...,
-            Awaitable[spanner_instance_admin.ListInstancePartitionOperationsResponse],
-        ],
-        request: spanner_instance_admin.ListInstancePartitionOperationsRequest,
-        response: spanner_instance_admin.ListInstancePartitionOperationsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsRequest):
-                The initial request object.
-            response (google.cloud.spanner_admin_instance_v1.types.ListInstancePartitionOperationsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner_instance_admin.ListInstancePartitionOperationsRequest(
-            request
-        )
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(
-        self,
-    ) -> AsyncIterator[spanner_instance_admin.ListInstancePartitionOperationsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[operations_pb2.Operation]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.operations:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/README.rst b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/README.rst
deleted file mode 100644
index 762ac0c765..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/README.rst
+++ /dev/null
@@ -1,9 +0,0 @@
-
-transport inheritance structure
-_______________________________
-
-`InstanceAdminTransport` is the ABC for all transports.
-- public child `InstanceAdminGrpcTransport` for sync gRPC transport (defined in `grpc.py`).
-- public child `InstanceAdminGrpcAsyncIOTransport` for async gRPC transport (defined in `grpc_asyncio.py`).
-- private child `_BaseInstanceAdminRestTransport` for base REST transport with inner classes `_BaseMETHOD` (defined in `rest_base.py`).
-- public child `InstanceAdminRestTransport` for sync REST transport with inner classes `METHOD` derived from the parent's corresponding `_BaseMETHOD` classes (defined in `rest.py`).
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/__init__.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/__init__.py
deleted file mode 100644
index 5a726c8a4e..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/__init__.py
+++ /dev/null
@@ -1,36 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-from typing import Dict, Type
-
-from .base import InstanceAdminTransport
-from .grpc import InstanceAdminGrpcTransport
-from .grpc_asyncio import InstanceAdminGrpcAsyncIOTransport
-from .rest import InstanceAdminRestInterceptor, InstanceAdminRestTransport
-
-# Compile a registry of transports.
-_transport_registry = OrderedDict()  # type: Dict[str, Type[InstanceAdminTransport]]
-_transport_registry["grpc"] = InstanceAdminGrpcTransport
-_transport_registry["grpc_asyncio"] = InstanceAdminGrpcAsyncIOTransport
-_transport_registry["rest"] = InstanceAdminRestTransport
-
-__all__ = (
-    "InstanceAdminTransport",
-    "InstanceAdminGrpcTransport",
-    "InstanceAdminGrpcAsyncIOTransport",
-    "InstanceAdminRestTransport",
-    "InstanceAdminRestInterceptor",
-)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/base.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/base.py
deleted file mode 100644
index a02d79058c..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/base.py
+++ /dev/null
@@ -1,597 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import abc
-from typing import Awaitable, Callable, Dict, Optional, Sequence, Union
-
-import google.api_core
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1, operations_v1
-from google.api_core import retry as retries
-import google.auth  # type: ignore
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-from google.protobuf import empty_pb2  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1 import gapic_version as package_version
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-class InstanceAdminTransport(abc.ABC):
-    """Abstract transport class for InstanceAdmin."""
-
-    AUTH_SCOPES = (
-        "https://www.googleapis.com/auth/cloud-platform",
-        "https://www.googleapis.com/auth/spanner.admin",
-    )
-
-    DEFAULT_HOST: str = "spanner.googleapis.com"
-
-    def __init__(
-        self,
-        *,
-        host: str = DEFAULT_HOST,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-        **kwargs,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A list of scopes.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-        """
-
-        scopes_kwargs = {"scopes": scopes, "default_scopes": self.AUTH_SCOPES}
-
-        # Save the scopes.
-        self._scopes = scopes
-        if not hasattr(self, "_ignore_credentials"):
-            self._ignore_credentials: bool = False
-
-        # If no credentials are provided, then determine the appropriate
-        # defaults.
-        if credentials and credentials_file:
-            raise core_exceptions.DuplicateCredentialArgs(
-                "'credentials_file' and 'credentials' are mutually exclusive"
-            )
-
-        if credentials_file is not None:
-            credentials, _ = google.auth.load_credentials_from_file(
-                credentials_file, **scopes_kwargs, quota_project_id=quota_project_id
-            )
-        elif credentials is None and not self._ignore_credentials:
-            credentials, _ = google.auth.default(
-                **scopes_kwargs, quota_project_id=quota_project_id
-            )
-            # Don't apply audience if the credentials file passed from user.
-            if hasattr(credentials, "with_gdch_audience"):
-                credentials = credentials.with_gdch_audience(
-                    api_audience if api_audience else host
-                )
-
-        # If the credentials are service account credentials, then always try to use self signed JWT.
-        if (
-            always_use_jwt_access
-            and isinstance(credentials, service_account.Credentials)
-            and hasattr(service_account.Credentials, "with_always_use_jwt_access")
-        ):
-            credentials = credentials.with_always_use_jwt_access(True)
-
-        # Save the credentials.
-        self._credentials = credentials
-
-        # Save the hostname. Default to port 443 (HTTPS) if none is specified.
-        if ":" not in host:
-            host += ":443"
-        self._host = host
-
-    @property
-    def host(self):
-        return self._host
-
-    def _prep_wrapped_messages(self, client_info):
-        # Precompute the wrapped methods.
-        self._wrapped_methods = {
-            self.list_instance_configs: gapic_v1.method.wrap_method(
-                self.list_instance_configs,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_instance_config: gapic_v1.method.wrap_method(
-                self.get_instance_config,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_instance_config: gapic_v1.method.wrap_method(
-                self.create_instance_config,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.update_instance_config: gapic_v1.method.wrap_method(
-                self.update_instance_config,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_instance_config: gapic_v1.method.wrap_method(
-                self.delete_instance_config,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_instance_config_operations: gapic_v1.method.wrap_method(
-                self.list_instance_config_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_instances: gapic_v1.method.wrap_method(
-                self.list_instances,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_instance_partitions: gapic_v1.method.wrap_method(
-                self.list_instance_partitions,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.get_instance: gapic_v1.method.wrap_method(
-                self.get_instance,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_instance: gapic_v1.method.wrap_method(
-                self.create_instance,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_instance: gapic_v1.method.wrap_method(
-                self.update_instance,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_instance: gapic_v1.method.wrap_method(
-                self.delete_instance,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.set_iam_policy: gapic_v1.method.wrap_method(
-                self.set_iam_policy,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.get_iam_policy: gapic_v1.method.wrap_method(
-                self.get_iam_policy,
-                default_retry=retries.Retry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.test_iam_permissions: gapic_v1.method.wrap_method(
-                self.test_iam_permissions,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.get_instance_partition: gapic_v1.method.wrap_method(
-                self.get_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.create_instance_partition: gapic_v1.method.wrap_method(
-                self.create_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_instance_partition: gapic_v1.method.wrap_method(
-                self.delete_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.update_instance_partition: gapic_v1.method.wrap_method(
-                self.update_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_instance_partition_operations: gapic_v1.method.wrap_method(
-                self.list_instance_partition_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.move_instance: gapic_v1.method.wrap_method(
-                self.move_instance,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.cancel_operation: gapic_v1.method.wrap_method(
-                self.cancel_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_operation: gapic_v1.method.wrap_method(
-                self.delete_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.get_operation: gapic_v1.method.wrap_method(
-                self.get_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_operations: gapic_v1.method.wrap_method(
-                self.list_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-        }
-
-    def close(self):
-        """Closes resources associated with the transport.
-
-        .. warning::
-             Only call this method if the transport is NOT shared
-             with other clients - this may cause errors in other clients!
-        """
-        raise NotImplementedError()
-
-    @property
-    def operations_client(self):
-        """Return the client designed to process long-running operations."""
-        raise NotImplementedError()
-
-    @property
-    def list_instance_configs(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigsRequest],
-        Union[
-            spanner_instance_admin.ListInstanceConfigsResponse,
-            Awaitable[spanner_instance_admin.ListInstanceConfigsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceConfigRequest],
-        Union[
-            spanner_instance_admin.InstanceConfig,
-            Awaitable[spanner_instance_admin.InstanceConfig],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def create_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceConfigRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def update_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceConfigRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def delete_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstanceConfigRequest],
-        Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_instance_config_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigOperationsRequest],
-        Union[
-            spanner_instance_admin.ListInstanceConfigOperationsResponse,
-            Awaitable[spanner_instance_admin.ListInstanceConfigOperationsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_instances(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancesRequest],
-        Union[
-            spanner_instance_admin.ListInstancesResponse,
-            Awaitable[spanner_instance_admin.ListInstancesResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_instance_partitions(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionsRequest],
-        Union[
-            spanner_instance_admin.ListInstancePartitionsResponse,
-            Awaitable[spanner_instance_admin.ListInstancePartitionsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceRequest],
-        Union[
-            spanner_instance_admin.Instance, Awaitable[spanner_instance_admin.Instance]
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def create_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def update_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def delete_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstanceRequest],
-        Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.SetIamPolicyRequest],
-        Union[policy_pb2.Policy, Awaitable[policy_pb2.Policy]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.GetIamPolicyRequest],
-        Union[policy_pb2.Policy, Awaitable[policy_pb2.Policy]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        Union[
-            iam_policy_pb2.TestIamPermissionsResponse,
-            Awaitable[iam_policy_pb2.TestIamPermissionsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstancePartitionRequest],
-        Union[
-            spanner_instance_admin.InstancePartition,
-            Awaitable[spanner_instance_admin.InstancePartition],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def create_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstancePartitionRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def delete_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstancePartitionRequest],
-        Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def update_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstancePartitionRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_instance_partition_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionOperationsRequest],
-        Union[
-            spanner_instance_admin.ListInstancePartitionOperationsResponse,
-            Awaitable[spanner_instance_admin.ListInstancePartitionOperationsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def move_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.MoveInstanceRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_operations(
-        self,
-    ) -> Callable[
-        [operations_pb2.ListOperationsRequest],
-        Union[
-            operations_pb2.ListOperationsResponse,
-            Awaitable[operations_pb2.ListOperationsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_operation(
-        self,
-    ) -> Callable[
-        [operations_pb2.GetOperationRequest],
-        Union[operations_pb2.Operation, Awaitable[operations_pb2.Operation]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def cancel_operation(
-        self,
-    ) -> Callable[[operations_pb2.CancelOperationRequest], None,]:
-        raise NotImplementedError()
-
-    @property
-    def delete_operation(
-        self,
-    ) -> Callable[[operations_pb2.DeleteOperationRequest], None,]:
-        raise NotImplementedError()
-
-    @property
-    def kind(self) -> str:
-        raise NotImplementedError()
-
-
-__all__ = ("InstanceAdminTransport",)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py
deleted file mode 100644
index 9172e43923..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc.py
+++ /dev/null
@@ -1,1417 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import json
-import logging as std_logging
-import pickle
-from typing import Callable, Dict, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import gapic_v1, grpc_helpers, operations_v1
-import google.auth  # type: ignore
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf.json_format import MessageToJson
-import google.protobuf.message
-import grpc  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-from .base import DEFAULT_CLIENT_INFO, InstanceAdminTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class _LoggingClientInterceptor(grpc.UnaryUnaryClientInterceptor):  # pragma: NO COVER
-    def intercept_unary_unary(self, continuation, client_call_details, request):
-        logging_enabled = CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        )
-        if logging_enabled:  # pragma: NO COVER
-            request_metadata = client_call_details.metadata
-            if isinstance(request, proto.Message):
-                request_payload = type(request).to_json(request)
-            elif isinstance(request, google.protobuf.message.Message):
-                request_payload = MessageToJson(request)
-            else:
-                request_payload = f"{type(request).__name__}: {pickle.dumps(request)}"
-
-            request_metadata = {
-                key: value.decode("utf-8") if isinstance(value, bytes) else value
-                for key, value in request_metadata
-            }
-            grpc_request = {
-                "payload": request_payload,
-                "requestMethod": "grpc",
-                "metadata": dict(request_metadata),
-            }
-            _LOGGER.debug(
-                f"Sending request for {client_call_details.method}",
-                extra={
-                    "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                    "rpcName": str(client_call_details.method),
-                    "request": grpc_request,
-                    "metadata": grpc_request["metadata"],
-                },
-            )
-        response = continuation(client_call_details, request)
-        if logging_enabled:  # pragma: NO COVER
-            response_metadata = response.trailing_metadata()
-            # Convert gRPC metadata `<class 'grpc.aio._metadata.Metadata'>` to list of tuples
-            metadata = (
-                dict([(k, str(v)) for k, v in response_metadata])
-                if response_metadata
-                else None
-            )
-            result = response.result()
-            if isinstance(result, proto.Message):
-                response_payload = type(result).to_json(result)
-            elif isinstance(result, google.protobuf.message.Message):
-                response_payload = MessageToJson(result)
-            else:
-                response_payload = f"{type(result).__name__}: {pickle.dumps(result)}"
-            grpc_response = {
-                "payload": response_payload,
-                "metadata": metadata,
-                "status": "OK",
-            }
-            _LOGGER.debug(
-                f"Received response for {client_call_details.method}.",
-                extra={
-                    "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                    "rpcName": client_call_details.method,
-                    "response": grpc_response,
-                    "metadata": grpc_response["metadata"],
-                },
-            )
-        return response
-
-
-class InstanceAdminGrpcTransport(InstanceAdminTransport):
-    """gRPC backend transport for InstanceAdmin.
-
-    Cloud Spanner Instance Admin API
-
-    The Cloud Spanner Instance Admin API can be used to create,
-    delete, modify and list instances. Instances are dedicated Cloud
-    Spanner serving and storage resources to be used by Cloud
-    Spanner databases.
-
-    Each instance has a "configuration", which dictates where the
-    serving resources for the Cloud Spanner instance are located
-    (e.g., US-central, Europe). Configurations are created by Google
-    based on resource availability.
-
-    Cloud Spanner billing is based on the instances that exist and
-    their sizes. After an instance exists, there are no additional
-    per-database or per-operation charges for use of the instance
-    (though there may be additional network bandwidth charges).
-    Instances offer isolation: problems with databases in one
-    instance will not affect other instances. However, within an
-    instance databases can affect each other. For example, if one
-    database in an instance receives a lot of requests and consumes
-    most of the instance resources, fewer resources are available
-    for other databases in that instance, and their performance may
-    suffer.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends protocol buffers over the wire using gRPC (which is built on
-    top of HTTP/2); the ``grpcio`` package must be installed.
-    """
-
-    _stubs: Dict[str, Callable]
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        channel: Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]] = None,
-        api_mtls_endpoint: Optional[str] = None,
-        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-                This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if a ``channel`` instance is provided.
-                This argument will be removed in the next major version of this library.
-            scopes (Optional(Sequence[str])): A list of scopes. This argument is
-                ignored if a ``channel`` instance is provided.
-            channel (Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]]):
-                A ``Channel`` instance through which to make calls, or a Callable
-                that constructs and returns one. If set to None, ``self.create_channel``
-                is used to create the channel. If a Callable is given, it will be called
-                with the same arguments as used in ``self.create_channel``.
-            api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
-                If provided, it overrides the ``host`` argument and tries to create
-                a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or application default SSL credentials.
-            client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                Deprecated. A callback to provide client SSL certificate bytes and
-                private key bytes, both in PEM format. It is ignored if
-                ``api_mtls_endpoint`` is None.
-            ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for the grpc channel. It is ignored if a ``channel`` instance is provided.
-            client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure a mutual TLS channel. It is
-                ignored if a ``channel`` instance or ``ssl_channel_credentials`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-
-        Raises:
-          google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
-              creation failed for any reason.
-          google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-        self._grpc_channel = None
-        self._ssl_channel_credentials = ssl_channel_credentials
-        self._stubs: Dict[str, Callable] = {}
-        self._operations_client: Optional[operations_v1.OperationsClient] = None
-
-        if api_mtls_endpoint:
-            warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
-        if client_cert_source:
-            warnings.warn("client_cert_source is deprecated", DeprecationWarning)
-
-        if isinstance(channel, grpc.Channel):
-            # Ignore credentials if a channel was passed.
-            credentials = None
-            self._ignore_credentials = True
-            # If a channel was explicitly provided, set it.
-            self._grpc_channel = channel
-            self._ssl_channel_credentials = None
-
-        else:
-            if api_mtls_endpoint:
-                host = api_mtls_endpoint
-
-                # Create SSL credentials with client_cert_source or application
-                # default SSL credentials.
-                if client_cert_source:
-                    cert, key = client_cert_source()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-                else:
-                    self._ssl_channel_credentials = SslCredentials().ssl_credentials
-
-            else:
-                if client_cert_source_for_mtls and not ssl_channel_credentials:
-                    cert, key = client_cert_source_for_mtls()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-
-        # The base transport sets the host, credentials and scopes
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            scopes=scopes,
-            quota_project_id=quota_project_id,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-        if not self._grpc_channel:
-            # initialize with the provided callable or the default channel
-            channel_init = channel or type(self).create_channel
-            self._grpc_channel = channel_init(
-                self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                # Set ``credentials_file`` to ``None`` here as
-                # the credentials that we saved earlier should be used.
-                credentials_file=None,
-                scopes=self._scopes,
-                ssl_credentials=self._ssl_channel_credentials,
-                quota_project_id=quota_project_id,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-
-        self._interceptor = _LoggingClientInterceptor()
-        self._logged_channel = grpc.intercept_channel(
-            self._grpc_channel, self._interceptor
-        )
-
-        # Wrap messages. This must be done after self._logged_channel exists
-        self._prep_wrapped_messages(client_info)
-
-    @classmethod
-    def create_channel(
-        cls,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        **kwargs,
-    ) -> grpc.Channel:
-        """Create and return a gRPC channel object.
-        Args:
-            host (Optional[str]): The host for the channel to use.
-            credentials (Optional[~.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify this application to the service. If
-                none are specified, the client will attempt to ascertain
-                the credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.  This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            kwargs (Optional[dict]): Keyword arguments, which are passed to the
-                channel creation.
-        Returns:
-            grpc.Channel: A gRPC channel object.
-
-        Raises:
-            google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-
-        return grpc_helpers.create_channel(
-            host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            quota_project_id=quota_project_id,
-            default_scopes=cls.AUTH_SCOPES,
-            scopes=scopes,
-            default_host=cls.DEFAULT_HOST,
-            **kwargs,
-        )
-
-    @property
-    def grpc_channel(self) -> grpc.Channel:
-        """Return the channel designed to connect to this service."""
-        return self._grpc_channel
-
-    @property
-    def operations_client(self) -> operations_v1.OperationsClient:
-        """Create the client designed to process long-running operations.
-
-        This property caches on the instance; repeated calls return the same
-        client.
-        """
-        # Quick check: Only create a new client if we do not already have one.
-        if self._operations_client is None:
-            self._operations_client = operations_v1.OperationsClient(
-                self._logged_channel
-            )
-
-        # Return the client from cache.
-        return self._operations_client
-
-    @property
-    def list_instance_configs(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigsRequest],
-        spanner_instance_admin.ListInstanceConfigsResponse,
-    ]:
-        r"""Return a callable for the list instance configs method over gRPC.
-
-        Lists the supported instance configurations for a
-        given project.
-        Returns both Google-managed configurations and
-        user-managed configurations.
-
-        Returns:
-            Callable[[~.ListInstanceConfigsRequest],
-                    ~.ListInstanceConfigsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_configs" not in self._stubs:
-            self._stubs["list_instance_configs"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstanceConfigs",
-                request_serializer=spanner_instance_admin.ListInstanceConfigsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstanceConfigsResponse.deserialize,
-            )
-        return self._stubs["list_instance_configs"]
-
-    @property
-    def get_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceConfigRequest],
-        spanner_instance_admin.InstanceConfig,
-    ]:
-        r"""Return a callable for the get instance config method over gRPC.
-
-        Gets information about a particular instance
-        configuration.
-
-        Returns:
-            Callable[[~.GetInstanceConfigRequest],
-                    ~.InstanceConfig]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_instance_config" not in self._stubs:
-            self._stubs["get_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetInstanceConfig",
-                request_serializer=spanner_instance_admin.GetInstanceConfigRequest.serialize,
-                response_deserializer=spanner_instance_admin.InstanceConfig.deserialize,
-            )
-        return self._stubs["get_instance_config"]
-
-    @property
-    def create_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceConfigRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the create instance config method over gRPC.
-
-        Creates an instance configuration and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance configuration. The
-        instance configuration name is assigned by the caller. If the
-        named instance configuration already exists,
-        ``CreateInstanceConfig`` returns ``ALREADY_EXISTS``.
-
-        Immediately after the request returns:
-
-        - The instance configuration is readable via the API, with all
-          requested attributes. The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true. Its state is ``CREATING``.
-
-        While the operation is pending:
-
-        - Cancelling the operation renders the instance configuration
-          immediately unreadable via the API.
-        - Except for deleting the creating resource, all other attempts
-          to modify the instance configuration are rejected.
-
-        Upon completion of the returned operation:
-
-        - Instances can be created using the instance configuration.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false. Its state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track creation of the instance configuration. The
-        metadata field type is
-        [CreateInstanceConfigMetadata][google.spanner.admin.instance.v1.CreateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.create``
-        permission on the resource
-        [parent][google.spanner.admin.instance.v1.CreateInstanceConfigRequest.parent].
-
-        Returns:
-            Callable[[~.CreateInstanceConfigRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_instance_config" not in self._stubs:
-            self._stubs["create_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/CreateInstanceConfig",
-                request_serializer=spanner_instance_admin.CreateInstanceConfigRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_instance_config"]
-
-    @property
-    def update_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceConfigRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the update instance config method over gRPC.
-
-        Updates an instance configuration. The returned long-running
-        operation can be used to track the progress of updating the
-        instance. If the named instance configuration does not exist,
-        returns ``NOT_FOUND``.
-
-        Only user-managed configurations can be updated.
-
-        Immediately after the request returns:
-
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true.
-
-        While the operation is pending:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata.cancel_time].
-          The operation is guaranteed to succeed at undoing all changes,
-          after which point it terminates with a ``CANCELLED`` status.
-        - All other attempts to modify the instance configuration are
-          rejected.
-        - Reading the instance configuration via the API continues to
-          give the pre-request values.
-
-        Upon completion of the returned operation:
-
-        - Creating instances using the instance configuration uses the
-          new values.
-        - The new values of the instance configuration are readable via
-          the API.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track the instance configuration modification.
-        The metadata field type is
-        [UpdateInstanceConfigMetadata][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        Returns:
-            Callable[[~.UpdateInstanceConfigRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_instance_config" not in self._stubs:
-            self._stubs["update_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/UpdateInstanceConfig",
-                request_serializer=spanner_instance_admin.UpdateInstanceConfigRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_instance_config"]
-
-    @property
-    def delete_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstanceConfigRequest], empty_pb2.Empty
-    ]:
-        r"""Return a callable for the delete instance config method over gRPC.
-
-        Deletes the instance configuration. Deletion is only allowed
-        when no instances are using the configuration. If any instances
-        are using the configuration, returns ``FAILED_PRECONDITION``.
-
-        Only user-managed configurations can be deleted.
-
-        Authorization requires ``spanner.instanceConfigs.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        Returns:
-            Callable[[~.DeleteInstanceConfigRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_instance_config" not in self._stubs:
-            self._stubs["delete_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/DeleteInstanceConfig",
-                request_serializer=spanner_instance_admin.DeleteInstanceConfigRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_instance_config"]
-
-    @property
-    def list_instance_config_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigOperationsRequest],
-        spanner_instance_admin.ListInstanceConfigOperationsResponse,
-    ]:
-        r"""Return a callable for the list instance config
-        operations method over gRPC.
-
-        Lists the user-managed instance configuration long-running
-        operations in the given project. An instance configuration
-        operation has a name of the form
-        ``projects/<project>/instanceConfigs/<instance_config>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        Returns:
-            Callable[[~.ListInstanceConfigOperationsRequest],
-                    ~.ListInstanceConfigOperationsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_config_operations" not in self._stubs:
-            self._stubs[
-                "list_instance_config_operations"
-            ] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstanceConfigOperations",
-                request_serializer=spanner_instance_admin.ListInstanceConfigOperationsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstanceConfigOperationsResponse.deserialize,
-            )
-        return self._stubs["list_instance_config_operations"]
-
-    @property
-    def list_instances(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancesRequest],
-        spanner_instance_admin.ListInstancesResponse,
-    ]:
-        r"""Return a callable for the list instances method over gRPC.
-
-        Lists all instances in the given project.
-
-        Returns:
-            Callable[[~.ListInstancesRequest],
-                    ~.ListInstancesResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instances" not in self._stubs:
-            self._stubs["list_instances"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstances",
-                request_serializer=spanner_instance_admin.ListInstancesRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstancesResponse.deserialize,
-            )
-        return self._stubs["list_instances"]
-
-    @property
-    def list_instance_partitions(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionsRequest],
-        spanner_instance_admin.ListInstancePartitionsResponse,
-    ]:
-        r"""Return a callable for the list instance partitions method over gRPC.
-
-        Lists all instance partitions for the given instance.
-
-        Returns:
-            Callable[[~.ListInstancePartitionsRequest],
-                    ~.ListInstancePartitionsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_partitions" not in self._stubs:
-            self._stubs["list_instance_partitions"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstancePartitions",
-                request_serializer=spanner_instance_admin.ListInstancePartitionsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstancePartitionsResponse.deserialize,
-            )
-        return self._stubs["list_instance_partitions"]
-
-    @property
-    def get_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceRequest], spanner_instance_admin.Instance
-    ]:
-        r"""Return a callable for the get instance method over gRPC.
-
-        Gets information about a particular instance.
-
-        Returns:
-            Callable[[~.GetInstanceRequest],
-                    ~.Instance]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_instance" not in self._stubs:
-            self._stubs["get_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetInstance",
-                request_serializer=spanner_instance_admin.GetInstanceRequest.serialize,
-                response_deserializer=spanner_instance_admin.Instance.deserialize,
-            )
-        return self._stubs["get_instance"]
-
-    @property
-    def create_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the create instance method over gRPC.
-
-        Creates an instance and begins preparing it to begin serving.
-        The returned long-running operation can be used to track the
-        progress of preparing the new instance. The instance name is
-        assigned by the caller. If the named instance already exists,
-        ``CreateInstance`` returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance is readable via the API, with all requested
-          attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance immediately
-          unreadable via the API.
-        - The instance can be deleted.
-        - All other attempts to modify the instance are rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can be created in the instance.
-        - The instance's allocated resource levels are readable via the
-          API.
-        - The instance's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track creation of the instance. The metadata field type
-        is
-        [CreateInstanceMetadata][google.spanner.admin.instance.v1.CreateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        Returns:
-            Callable[[~.CreateInstanceRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_instance" not in self._stubs:
-            self._stubs["create_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/CreateInstance",
-                request_serializer=spanner_instance_admin.CreateInstanceRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_instance"]
-
-    @property
-    def update_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the update instance method over gRPC.
-
-        Updates an instance, and begins allocating or releasing
-        resources as requested. The returned long-running operation can
-        be used to track the progress of updating the instance. If the
-        named instance does not exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance's
-          allocation has been requested, billing is based on the
-          newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance are rejected.
-        - Reading the instance via the API continues to give the
-          pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance's tables.
-        - The instance's new resource levels are readable via the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track the instance modification. The metadata field type
-        is
-        [UpdateInstanceMetadata][google.spanner.admin.instance.v1.UpdateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        Authorization requires ``spanner.instances.update`` permission
-        on the resource
-        [name][google.spanner.admin.instance.v1.Instance.name].
-
-        Returns:
-            Callable[[~.UpdateInstanceRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_instance" not in self._stubs:
-            self._stubs["update_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/UpdateInstance",
-                request_serializer=spanner_instance_admin.UpdateInstanceRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_instance"]
-
-    @property
-    def delete_instance(
-        self,
-    ) -> Callable[[spanner_instance_admin.DeleteInstanceRequest], empty_pb2.Empty]:
-        r"""Return a callable for the delete instance method over gRPC.
-
-        Deletes an instance.
-
-        Immediately upon completion of the request:
-
-        - Billing ceases for all of the instance's reserved resources.
-
-        Soon afterward:
-
-        - The instance and *all of its databases* immediately and
-          irrevocably disappear from the API. All data in the databases
-          is permanently deleted.
-
-        Returns:
-            Callable[[~.DeleteInstanceRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_instance" not in self._stubs:
-            self._stubs["delete_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/DeleteInstance",
-                request_serializer=spanner_instance_admin.DeleteInstanceRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_instance"]
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], policy_pb2.Policy]:
-        r"""Return a callable for the set iam policy method over gRPC.
-
-        Sets the access control policy on an instance resource. Replaces
-        any existing policy.
-
-        Authorization requires ``spanner.instances.setIamPolicy`` on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.SetIamPolicyRequest],
-                    ~.Policy]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "set_iam_policy" not in self._stubs:
-            self._stubs["set_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/SetIamPolicy",
-                request_serializer=iam_policy_pb2.SetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["set_iam_policy"]
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], policy_pb2.Policy]:
-        r"""Return a callable for the get iam policy method over gRPC.
-
-        Gets the access control policy for an instance resource. Returns
-        an empty policy if an instance exists but does not have a policy
-        set.
-
-        Authorization requires ``spanner.instances.getIamPolicy`` on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.GetIamPolicyRequest],
-                    ~.Policy]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_iam_policy" not in self._stubs:
-            self._stubs["get_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetIamPolicy",
-                request_serializer=iam_policy_pb2.GetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["get_iam_policy"]
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        iam_policy_pb2.TestIamPermissionsResponse,
-    ]:
-        r"""Return a callable for the test iam permissions method over gRPC.
-
-        Returns permissions that the caller has on the specified
-        instance resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner instance
-        resource will result in a NOT_FOUND error if the user has
-        ``spanner.instances.list`` permission on the containing Google
-        Cloud Project. Otherwise returns an empty set of permissions.
-
-        Returns:
-            Callable[[~.TestIamPermissionsRequest],
-                    ~.TestIamPermissionsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "test_iam_permissions" not in self._stubs:
-            self._stubs["test_iam_permissions"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/TestIamPermissions",
-                request_serializer=iam_policy_pb2.TestIamPermissionsRequest.SerializeToString,
-                response_deserializer=iam_policy_pb2.TestIamPermissionsResponse.FromString,
-            )
-        return self._stubs["test_iam_permissions"]
-
-    @property
-    def get_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstancePartitionRequest],
-        spanner_instance_admin.InstancePartition,
-    ]:
-        r"""Return a callable for the get instance partition method over gRPC.
-
-        Gets information about a particular instance
-        partition.
-
-        Returns:
-            Callable[[~.GetInstancePartitionRequest],
-                    ~.InstancePartition]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_instance_partition" not in self._stubs:
-            self._stubs["get_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetInstancePartition",
-                request_serializer=spanner_instance_admin.GetInstancePartitionRequest.serialize,
-                response_deserializer=spanner_instance_admin.InstancePartition.deserialize,
-            )
-        return self._stubs["get_instance_partition"]
-
-    @property
-    def create_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstancePartitionRequest],
-        operations_pb2.Operation,
-    ]:
-        r"""Return a callable for the create instance partition method over gRPC.
-
-        Creates an instance partition and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance partition. The
-        instance partition name is assigned by the caller. If the named
-        instance partition already exists, ``CreateInstancePartition``
-        returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance partition is readable via the API, with all
-          requested attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance partition
-          immediately unreadable via the API.
-        - The instance partition can be deleted.
-        - All other attempts to modify the instance partition are
-          rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can start using this instance partition.
-        - The instance partition's allocated resource levels are
-          readable via the API.
-        - The instance partition's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track creation of the instance partition. The
-        metadata field type is
-        [CreateInstancePartitionMetadata][google.spanner.admin.instance.v1.CreateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        Returns:
-            Callable[[~.CreateInstancePartitionRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_instance_partition" not in self._stubs:
-            self._stubs["create_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/CreateInstancePartition",
-                request_serializer=spanner_instance_admin.CreateInstancePartitionRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_instance_partition"]
-
-    @property
-    def delete_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstancePartitionRequest], empty_pb2.Empty
-    ]:
-        r"""Return a callable for the delete instance partition method over gRPC.
-
-        Deletes an existing instance partition. Requires that the
-        instance partition is not used by any database or backup and is
-        not the default instance partition of an instance.
-
-        Authorization requires ``spanner.instancePartitions.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        Returns:
-            Callable[[~.DeleteInstancePartitionRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_instance_partition" not in self._stubs:
-            self._stubs["delete_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/DeleteInstancePartition",
-                request_serializer=spanner_instance_admin.DeleteInstancePartitionRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_instance_partition"]
-
-    @property
-    def update_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstancePartitionRequest],
-        operations_pb2.Operation,
-    ]:
-        r"""Return a callable for the update instance partition method over gRPC.
-
-        Updates an instance partition, and begins allocating or
-        releasing resources as requested. The returned long-running
-        operation can be used to track the progress of updating the
-        instance partition. If the named instance partition does not
-        exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance
-          partition's allocation has been requested, billing is based on
-          the newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance partition are
-          rejected.
-        - Reading the instance partition via the API continues to give
-          the pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance partition's tables.
-        - The instance partition's new resource levels are readable via
-          the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track the instance partition modification.
-        The metadata field type is
-        [UpdateInstancePartitionMetadata][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        Authorization requires ``spanner.instancePartitions.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        Returns:
-            Callable[[~.UpdateInstancePartitionRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_instance_partition" not in self._stubs:
-            self._stubs["update_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/UpdateInstancePartition",
-                request_serializer=spanner_instance_admin.UpdateInstancePartitionRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_instance_partition"]
-
-    @property
-    def list_instance_partition_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionOperationsRequest],
-        spanner_instance_admin.ListInstancePartitionOperationsResponse,
-    ]:
-        r"""Return a callable for the list instance partition
-        operations method over gRPC.
-
-        Lists instance partition long-running operations in the given
-        instance. An instance partition operation has a name of the form
-        ``projects/<project>/instances/<instance>/instancePartitions/<instance_partition>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        Authorization requires
-        ``spanner.instancePartitionOperations.list`` permission on the
-        resource
-        [parent][google.spanner.admin.instance.v1.ListInstancePartitionOperationsRequest.parent].
-
-        Returns:
-            Callable[[~.ListInstancePartitionOperationsRequest],
-                    ~.ListInstancePartitionOperationsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_partition_operations" not in self._stubs:
-            self._stubs[
-                "list_instance_partition_operations"
-            ] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstancePartitionOperations",
-                request_serializer=spanner_instance_admin.ListInstancePartitionOperationsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstancePartitionOperationsResponse.deserialize,
-            )
-        return self._stubs["list_instance_partition_operations"]
-
-    @property
-    def move_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.MoveInstanceRequest], operations_pb2.Operation
-    ]:
-        r"""Return a callable for the move instance method over gRPC.
-
-        Moves an instance to the target instance configuration. You can
-        use the returned long-running operation to track the progress of
-        moving the instance.
-
-        ``MoveInstance`` returns ``FAILED_PRECONDITION`` if the instance
-        meets any of the following criteria:
-
-        - Is undergoing a move to a different instance configuration
-        - Has backups
-        - Has an ongoing update
-        - Contains any CMEK-enabled databases
-        - Is a free trial instance
-
-        While the operation is pending:
-
-        - All other attempts to modify the instance, including changes
-          to its compute capacity, are rejected.
-
-        - The following database and backup admin operations are
-          rejected:
-
-          - ``DatabaseAdmin.CreateDatabase``
-          - ``DatabaseAdmin.UpdateDatabaseDdl`` (disabled if
-            default_leader is specified in the request.)
-          - ``DatabaseAdmin.RestoreDatabase``
-          - ``DatabaseAdmin.CreateBackup``
-          - ``DatabaseAdmin.CopyBackup``
-
-        - Both the source and target instance configurations are subject
-          to hourly compute and storage charges.
-
-        - The instance might experience higher read-write latencies and
-          a higher transaction abort rate. However, moving an instance
-          doesn't cause any downtime.
-
-        The returned long-running operation has a name of the format
-        ``<instance_name>/operations/<operation_id>`` and can be used to
-        track the move instance operation. The metadata field type is
-        [MoveInstanceMetadata][google.spanner.admin.instance.v1.MoveInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful. Cancelling the operation sets its metadata's
-        [cancel_time][google.spanner.admin.instance.v1.MoveInstanceMetadata.cancel_time].
-        Cancellation is not immediate because it involves moving any
-        data previously moved to the target instance configuration back
-        to the original instance configuration. You can use this
-        operation to track the progress of the cancellation. Upon
-        successful completion of the cancellation, the operation
-        terminates with ``CANCELLED`` status.
-
-        If not cancelled, upon completion of the returned operation:
-
-        - The instance successfully moves to the target instance
-          configuration.
-        - You are billed for compute and storage in target instance
-          configuration.
-
-        Authorization requires the ``spanner.instances.update``
-        permission on the resource
-        [instance][google.spanner.admin.instance.v1.Instance].
-
-        For more details, see `Move an
-        instance <https://cloud.google.com/spanner/docs/move-instance>`__.
-
-        Returns:
-            Callable[[~.MoveInstanceRequest],
-                    ~.Operation]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "move_instance" not in self._stubs:
-            self._stubs["move_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/MoveInstance",
-                request_serializer=spanner_instance_admin.MoveInstanceRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["move_instance"]
-
-    def close(self):
-        self._logged_channel.close()
-
-    @property
-    def delete_operation(
-        self,
-    ) -> Callable[[operations_pb2.DeleteOperationRequest], None]:
-        r"""Return a callable for the delete_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_operation" not in self._stubs:
-            self._stubs["delete_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/DeleteOperation",
-                request_serializer=operations_pb2.DeleteOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["delete_operation"]
-
-    @property
-    def cancel_operation(
-        self,
-    ) -> Callable[[operations_pb2.CancelOperationRequest], None]:
-        r"""Return a callable for the cancel_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "cancel_operation" not in self._stubs:
-            self._stubs["cancel_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/CancelOperation",
-                request_serializer=operations_pb2.CancelOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["cancel_operation"]
-
-    @property
-    def get_operation(
-        self,
-    ) -> Callable[[operations_pb2.GetOperationRequest], operations_pb2.Operation]:
-        r"""Return a callable for the get_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_operation" not in self._stubs:
-            self._stubs["get_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/GetOperation",
-                request_serializer=operations_pb2.GetOperationRequest.SerializeToString,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["get_operation"]
-
-    @property
-    def list_operations(
-        self,
-    ) -> Callable[
-        [operations_pb2.ListOperationsRequest], operations_pb2.ListOperationsResponse
-    ]:
-        r"""Return a callable for the list_operations method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_operations" not in self._stubs:
-            self._stubs["list_operations"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/ListOperations",
-                request_serializer=operations_pb2.ListOperationsRequest.SerializeToString,
-                response_deserializer=operations_pb2.ListOperationsResponse.FromString,
-            )
-        return self._stubs["list_operations"]
-
-    @property
-    def kind(self) -> str:
-        return "grpc"
-
-
-__all__ = ("InstanceAdminGrpcTransport",)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py
deleted file mode 100644
index e1a88c6800..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/grpc_asyncio.py
+++ /dev/null
@@ -1,1629 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import inspect
-import json
-import logging as std_logging
-import pickle
-from typing import Awaitable, Callable, Dict, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1, grpc_helpers_async, operations_v1
-from google.api_core import retry_async as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf.json_format import MessageToJson
-import google.protobuf.message
-import grpc  # type: ignore
-from grpc.experimental import aio  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-from .base import DEFAULT_CLIENT_INFO, InstanceAdminTransport
-from .grpc import InstanceAdminGrpcTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class _LoggingClientAIOInterceptor(
-    grpc.aio.UnaryUnaryClientInterceptor
-):  # pragma: NO COVER
-    async def intercept_unary_unary(self, continuation, client_call_details, request):
-        logging_enabled = CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        )
-        if logging_enabled:  # pragma: NO COVER
-            request_metadata = client_call_details.metadata
-            if isinstance(request, proto.Message):
-                request_payload = type(request).to_json(request)
-            elif isinstance(request, google.protobuf.message.Message):
-                request_payload = MessageToJson(request)
-            else:
-                request_payload = f"{type(request).__name__}: {pickle.dumps(request)}"
-
-            request_metadata = {
-                key: value.decode("utf-8") if isinstance(value, bytes) else value
-                for key, value in request_metadata
-            }
-            grpc_request = {
-                "payload": request_payload,
-                "requestMethod": "grpc",
-                "metadata": dict(request_metadata),
-            }
-            _LOGGER.debug(
-                f"Sending request for {client_call_details.method}",
-                extra={
-                    "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                    "rpcName": str(client_call_details.method),
-                    "request": grpc_request,
-                    "metadata": grpc_request["metadata"],
-                },
-            )
-        response = await continuation(client_call_details, request)
-        if logging_enabled:  # pragma: NO COVER
-            response_metadata = await response.trailing_metadata()
-            # Convert gRPC metadata `<class 'grpc.aio._metadata.Metadata'>` to list of tuples
-            metadata = (
-                dict([(k, str(v)) for k, v in response_metadata])
-                if response_metadata
-                else None
-            )
-            result = await response
-            if isinstance(result, proto.Message):
-                response_payload = type(result).to_json(result)
-            elif isinstance(result, google.protobuf.message.Message):
-                response_payload = MessageToJson(result)
-            else:
-                response_payload = f"{type(result).__name__}: {pickle.dumps(result)}"
-            grpc_response = {
-                "payload": response_payload,
-                "metadata": metadata,
-                "status": "OK",
-            }
-            _LOGGER.debug(
-                f"Received response to rpc {client_call_details.method}.",
-                extra={
-                    "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                    "rpcName": str(client_call_details.method),
-                    "response": grpc_response,
-                    "metadata": grpc_response["metadata"],
-                },
-            )
-        return response
-
-
-class InstanceAdminGrpcAsyncIOTransport(InstanceAdminTransport):
-    """gRPC AsyncIO backend transport for InstanceAdmin.
-
-    Cloud Spanner Instance Admin API
-
-    The Cloud Spanner Instance Admin API can be used to create,
-    delete, modify and list instances. Instances are dedicated Cloud
-    Spanner serving and storage resources to be used by Cloud
-    Spanner databases.
-
-    Each instance has a "configuration", which dictates where the
-    serving resources for the Cloud Spanner instance are located
-    (e.g., US-central, Europe). Configurations are created by Google
-    based on resource availability.
-
-    Cloud Spanner billing is based on the instances that exist and
-    their sizes. After an instance exists, there are no additional
-    per-database or per-operation charges for use of the instance
-    (though there may be additional network bandwidth charges).
-    Instances offer isolation: problems with databases in one
-    instance will not affect other instances. However, within an
-    instance databases can affect each other. For example, if one
-    database in an instance receives a lot of requests and consumes
-    most of the instance resources, fewer resources are available
-    for other databases in that instance, and their performance may
-    suffer.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends protocol buffers over the wire using gRPC (which is built on
-    top of HTTP/2); the ``grpcio`` package must be installed.
-    """
-
-    _grpc_channel: aio.Channel
-    _stubs: Dict[str, Callable] = {}
-
-    @classmethod
-    def create_channel(
-        cls,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        **kwargs,
-    ) -> aio.Channel:
-        """Create and return a gRPC AsyncIO channel object.
-        Args:
-            host (Optional[str]): The host for the channel to use.
-            credentials (Optional[~.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify this application to the service. If
-                none are specified, the client will attempt to ascertain
-                the credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            kwargs (Optional[dict]): Keyword arguments, which are passed to the
-                channel creation.
-        Returns:
-            aio.Channel: A gRPC AsyncIO channel object.
-        """
-
-        return grpc_helpers_async.create_channel(
-            host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            quota_project_id=quota_project_id,
-            default_scopes=cls.AUTH_SCOPES,
-            scopes=scopes,
-            default_host=cls.DEFAULT_HOST,
-            **kwargs,
-        )
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        channel: Optional[Union[aio.Channel, Callable[..., aio.Channel]]] = None,
-        api_mtls_endpoint: Optional[str] = None,
-        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-                This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if a ``channel`` instance is provided.
-                This argument will be removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            channel (Optional[Union[aio.Channel, Callable[..., aio.Channel]]]):
-                A ``Channel`` instance through which to make calls, or a Callable
-                that constructs and returns one. If set to None, ``self.create_channel``
-                is used to create the channel. If a Callable is given, it will be called
-                with the same arguments as used in ``self.create_channel``.
-            api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
-                If provided, it overrides the ``host`` argument and tries to create
-                a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or application default SSL credentials.
-            client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                Deprecated. A callback to provide client SSL certificate bytes and
-                private key bytes, both in PEM format. It is ignored if
-                ``api_mtls_endpoint`` is None.
-            ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for the grpc channel. It is ignored if a ``channel`` instance is provided.
-            client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure a mutual TLS channel. It is
-                ignored if a ``channel`` instance or ``ssl_channel_credentials`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-
-        Raises:
-            google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
-              creation failed for any reason.
-          google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-        self._grpc_channel = None
-        self._ssl_channel_credentials = ssl_channel_credentials
-        self._stubs: Dict[str, Callable] = {}
-        self._operations_client: Optional[operations_v1.OperationsAsyncClient] = None
-
-        if api_mtls_endpoint:
-            warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
-        if client_cert_source:
-            warnings.warn("client_cert_source is deprecated", DeprecationWarning)
-
-        if isinstance(channel, aio.Channel):
-            # Ignore credentials if a channel was passed.
-            credentials = None
-            self._ignore_credentials = True
-            # If a channel was explicitly provided, set it.
-            self._grpc_channel = channel
-            self._ssl_channel_credentials = None
-        else:
-            if api_mtls_endpoint:
-                host = api_mtls_endpoint
-
-                # Create SSL credentials with client_cert_source or application
-                # default SSL credentials.
-                if client_cert_source:
-                    cert, key = client_cert_source()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-                else:
-                    self._ssl_channel_credentials = SslCredentials().ssl_credentials
-
-            else:
-                if client_cert_source_for_mtls and not ssl_channel_credentials:
-                    cert, key = client_cert_source_for_mtls()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-
-        # The base transport sets the host, credentials and scopes
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            scopes=scopes,
-            quota_project_id=quota_project_id,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-        if not self._grpc_channel:
-            # initialize with the provided callable or the default channel
-            channel_init = channel or type(self).create_channel
-            self._grpc_channel = channel_init(
-                self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                # Set ``credentials_file`` to ``None`` here as
-                # the credentials that we saved earlier should be used.
-                credentials_file=None,
-                scopes=self._scopes,
-                ssl_credentials=self._ssl_channel_credentials,
-                quota_project_id=quota_project_id,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-
-        self._interceptor = _LoggingClientAIOInterceptor()
-        self._grpc_channel._unary_unary_interceptors.append(self._interceptor)
-        self._logged_channel = self._grpc_channel
-        self._wrap_with_kind = (
-            "kind" in inspect.signature(gapic_v1.method_async.wrap_method).parameters
-        )
-        # Wrap messages. This must be done after self._logged_channel exists
-        self._prep_wrapped_messages(client_info)
-
-    @property
-    def grpc_channel(self) -> aio.Channel:
-        """Create the channel designed to connect to this service.
-
-        This property caches on the instance; repeated calls return
-        the same channel.
-        """
-        # Return the channel from cache.
-        return self._grpc_channel
-
-    @property
-    def operations_client(self) -> operations_v1.OperationsAsyncClient:
-        """Create the client designed to process long-running operations.
-
-        This property caches on the instance; repeated calls return the same
-        client.
-        """
-        # Quick check: Only create a new client if we do not already have one.
-        if self._operations_client is None:
-            self._operations_client = operations_v1.OperationsAsyncClient(
-                self._logged_channel
-            )
-
-        # Return the client from cache.
-        return self._operations_client
-
-    @property
-    def list_instance_configs(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigsRequest],
-        Awaitable[spanner_instance_admin.ListInstanceConfigsResponse],
-    ]:
-        r"""Return a callable for the list instance configs method over gRPC.
-
-        Lists the supported instance configurations for a
-        given project.
-        Returns both Google-managed configurations and
-        user-managed configurations.
-
-        Returns:
-            Callable[[~.ListInstanceConfigsRequest],
-                    Awaitable[~.ListInstanceConfigsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_configs" not in self._stubs:
-            self._stubs["list_instance_configs"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstanceConfigs",
-                request_serializer=spanner_instance_admin.ListInstanceConfigsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstanceConfigsResponse.deserialize,
-            )
-        return self._stubs["list_instance_configs"]
-
-    @property
-    def get_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceConfigRequest],
-        Awaitable[spanner_instance_admin.InstanceConfig],
-    ]:
-        r"""Return a callable for the get instance config method over gRPC.
-
-        Gets information about a particular instance
-        configuration.
-
-        Returns:
-            Callable[[~.GetInstanceConfigRequest],
-                    Awaitable[~.InstanceConfig]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_instance_config" not in self._stubs:
-            self._stubs["get_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetInstanceConfig",
-                request_serializer=spanner_instance_admin.GetInstanceConfigRequest.serialize,
-                response_deserializer=spanner_instance_admin.InstanceConfig.deserialize,
-            )
-        return self._stubs["get_instance_config"]
-
-    @property
-    def create_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceConfigRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the create instance config method over gRPC.
-
-        Creates an instance configuration and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance configuration. The
-        instance configuration name is assigned by the caller. If the
-        named instance configuration already exists,
-        ``CreateInstanceConfig`` returns ``ALREADY_EXISTS``.
-
-        Immediately after the request returns:
-
-        - The instance configuration is readable via the API, with all
-          requested attributes. The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true. Its state is ``CREATING``.
-
-        While the operation is pending:
-
-        - Cancelling the operation renders the instance configuration
-          immediately unreadable via the API.
-        - Except for deleting the creating resource, all other attempts
-          to modify the instance configuration are rejected.
-
-        Upon completion of the returned operation:
-
-        - Instances can be created using the instance configuration.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false. Its state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track creation of the instance configuration. The
-        metadata field type is
-        [CreateInstanceConfigMetadata][google.spanner.admin.instance.v1.CreateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.create``
-        permission on the resource
-        [parent][google.spanner.admin.instance.v1.CreateInstanceConfigRequest.parent].
-
-        Returns:
-            Callable[[~.CreateInstanceConfigRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_instance_config" not in self._stubs:
-            self._stubs["create_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/CreateInstanceConfig",
-                request_serializer=spanner_instance_admin.CreateInstanceConfigRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_instance_config"]
-
-    @property
-    def update_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceConfigRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the update instance config method over gRPC.
-
-        Updates an instance configuration. The returned long-running
-        operation can be used to track the progress of updating the
-        instance. If the named instance configuration does not exist,
-        returns ``NOT_FOUND``.
-
-        Only user-managed configurations can be updated.
-
-        Immediately after the request returns:
-
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field is set to true.
-
-        While the operation is pending:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata.cancel_time].
-          The operation is guaranteed to succeed at undoing all changes,
-          after which point it terminates with a ``CANCELLED`` status.
-        - All other attempts to modify the instance configuration are
-          rejected.
-        - Reading the instance configuration via the API continues to
-          give the pre-request values.
-
-        Upon completion of the returned operation:
-
-        - Creating instances using the instance configuration uses the
-          new values.
-        - The new values of the instance configuration are readable via
-          the API.
-        - The instance configuration's
-          [reconciling][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-          field becomes false.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_config_name>/operations/<operation_id>`` and
-        can be used to track the instance configuration modification.
-        The metadata field type is
-        [UpdateInstanceConfigMetadata][google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata].
-        The response field type is
-        [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig],
-        if successful.
-
-        Authorization requires ``spanner.instanceConfigs.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        Returns:
-            Callable[[~.UpdateInstanceConfigRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_instance_config" not in self._stubs:
-            self._stubs["update_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/UpdateInstanceConfig",
-                request_serializer=spanner_instance_admin.UpdateInstanceConfigRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_instance_config"]
-
-    @property
-    def delete_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstanceConfigRequest], Awaitable[empty_pb2.Empty]
-    ]:
-        r"""Return a callable for the delete instance config method over gRPC.
-
-        Deletes the instance configuration. Deletion is only allowed
-        when no instances are using the configuration. If any instances
-        are using the configuration, returns ``FAILED_PRECONDITION``.
-
-        Only user-managed configurations can be deleted.
-
-        Authorization requires ``spanner.instanceConfigs.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstanceConfig.name].
-
-        Returns:
-            Callable[[~.DeleteInstanceConfigRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_instance_config" not in self._stubs:
-            self._stubs["delete_instance_config"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/DeleteInstanceConfig",
-                request_serializer=spanner_instance_admin.DeleteInstanceConfigRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_instance_config"]
-
-    @property
-    def list_instance_config_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigOperationsRequest],
-        Awaitable[spanner_instance_admin.ListInstanceConfigOperationsResponse],
-    ]:
-        r"""Return a callable for the list instance config
-        operations method over gRPC.
-
-        Lists the user-managed instance configuration long-running
-        operations in the given project. An instance configuration
-        operation has a name of the form
-        ``projects/<project>/instanceConfigs/<instance_config>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        Returns:
-            Callable[[~.ListInstanceConfigOperationsRequest],
-                    Awaitable[~.ListInstanceConfigOperationsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_config_operations" not in self._stubs:
-            self._stubs[
-                "list_instance_config_operations"
-            ] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstanceConfigOperations",
-                request_serializer=spanner_instance_admin.ListInstanceConfigOperationsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstanceConfigOperationsResponse.deserialize,
-            )
-        return self._stubs["list_instance_config_operations"]
-
-    @property
-    def list_instances(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancesRequest],
-        Awaitable[spanner_instance_admin.ListInstancesResponse],
-    ]:
-        r"""Return a callable for the list instances method over gRPC.
-
-        Lists all instances in the given project.
-
-        Returns:
-            Callable[[~.ListInstancesRequest],
-                    Awaitable[~.ListInstancesResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instances" not in self._stubs:
-            self._stubs["list_instances"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstances",
-                request_serializer=spanner_instance_admin.ListInstancesRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstancesResponse.deserialize,
-            )
-        return self._stubs["list_instances"]
-
-    @property
-    def list_instance_partitions(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionsRequest],
-        Awaitable[spanner_instance_admin.ListInstancePartitionsResponse],
-    ]:
-        r"""Return a callable for the list instance partitions method over gRPC.
-
-        Lists all instance partitions for the given instance.
-
-        Returns:
-            Callable[[~.ListInstancePartitionsRequest],
-                    Awaitable[~.ListInstancePartitionsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_partitions" not in self._stubs:
-            self._stubs["list_instance_partitions"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstancePartitions",
-                request_serializer=spanner_instance_admin.ListInstancePartitionsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstancePartitionsResponse.deserialize,
-            )
-        return self._stubs["list_instance_partitions"]
-
-    @property
-    def get_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceRequest],
-        Awaitable[spanner_instance_admin.Instance],
-    ]:
-        r"""Return a callable for the get instance method over gRPC.
-
-        Gets information about a particular instance.
-
-        Returns:
-            Callable[[~.GetInstanceRequest],
-                    Awaitable[~.Instance]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_instance" not in self._stubs:
-            self._stubs["get_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetInstance",
-                request_serializer=spanner_instance_admin.GetInstanceRequest.serialize,
-                response_deserializer=spanner_instance_admin.Instance.deserialize,
-            )
-        return self._stubs["get_instance"]
-
-    @property
-    def create_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the create instance method over gRPC.
-
-        Creates an instance and begins preparing it to begin serving.
-        The returned long-running operation can be used to track the
-        progress of preparing the new instance. The instance name is
-        assigned by the caller. If the named instance already exists,
-        ``CreateInstance`` returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance is readable via the API, with all requested
-          attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance immediately
-          unreadable via the API.
-        - The instance can be deleted.
-        - All other attempts to modify the instance are rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can be created in the instance.
-        - The instance's allocated resource levels are readable via the
-          API.
-        - The instance's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track creation of the instance. The metadata field type
-        is
-        [CreateInstanceMetadata][google.spanner.admin.instance.v1.CreateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        Returns:
-            Callable[[~.CreateInstanceRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_instance" not in self._stubs:
-            self._stubs["create_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/CreateInstance",
-                request_serializer=spanner_instance_admin.CreateInstanceRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_instance"]
-
-    @property
-    def update_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the update instance method over gRPC.
-
-        Updates an instance, and begins allocating or releasing
-        resources as requested. The returned long-running operation can
-        be used to track the progress of updating the instance. If the
-        named instance does not exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance's
-          allocation has been requested, billing is based on the
-          newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstanceMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance are rejected.
-        - Reading the instance via the API continues to give the
-          pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance's tables.
-        - The instance's new resource levels are readable via the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_name>/operations/<operation_id>`` and can be
-        used to track the instance modification. The metadata field type
-        is
-        [UpdateInstanceMetadata][google.spanner.admin.instance.v1.UpdateInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful.
-
-        Authorization requires ``spanner.instances.update`` permission
-        on the resource
-        [name][google.spanner.admin.instance.v1.Instance.name].
-
-        Returns:
-            Callable[[~.UpdateInstanceRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_instance" not in self._stubs:
-            self._stubs["update_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/UpdateInstance",
-                request_serializer=spanner_instance_admin.UpdateInstanceRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_instance"]
-
-    @property
-    def delete_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstanceRequest], Awaitable[empty_pb2.Empty]
-    ]:
-        r"""Return a callable for the delete instance method over gRPC.
-
-        Deletes an instance.
-
-        Immediately upon completion of the request:
-
-        - Billing ceases for all of the instance's reserved resources.
-
-        Soon afterward:
-
-        - The instance and *all of its databases* immediately and
-          irrevocably disappear from the API. All data in the databases
-          is permanently deleted.
-
-        Returns:
-            Callable[[~.DeleteInstanceRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_instance" not in self._stubs:
-            self._stubs["delete_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/DeleteInstance",
-                request_serializer=spanner_instance_admin.DeleteInstanceRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_instance"]
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], Awaitable[policy_pb2.Policy]]:
-        r"""Return a callable for the set iam policy method over gRPC.
-
-        Sets the access control policy on an instance resource. Replaces
-        any existing policy.
-
-        Authorization requires ``spanner.instances.setIamPolicy`` on
-        [resource][google.iam.v1.SetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.SetIamPolicyRequest],
-                    Awaitable[~.Policy]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "set_iam_policy" not in self._stubs:
-            self._stubs["set_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/SetIamPolicy",
-                request_serializer=iam_policy_pb2.SetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["set_iam_policy"]
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], Awaitable[policy_pb2.Policy]]:
-        r"""Return a callable for the get iam policy method over gRPC.
-
-        Gets the access control policy for an instance resource. Returns
-        an empty policy if an instance exists but does not have a policy
-        set.
-
-        Authorization requires ``spanner.instances.getIamPolicy`` on
-        [resource][google.iam.v1.GetIamPolicyRequest.resource].
-
-        Returns:
-            Callable[[~.GetIamPolicyRequest],
-                    Awaitable[~.Policy]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_iam_policy" not in self._stubs:
-            self._stubs["get_iam_policy"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetIamPolicy",
-                request_serializer=iam_policy_pb2.GetIamPolicyRequest.SerializeToString,
-                response_deserializer=policy_pb2.Policy.FromString,
-            )
-        return self._stubs["get_iam_policy"]
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        Awaitable[iam_policy_pb2.TestIamPermissionsResponse],
-    ]:
-        r"""Return a callable for the test iam permissions method over gRPC.
-
-        Returns permissions that the caller has on the specified
-        instance resource.
-
-        Attempting this RPC on a non-existent Cloud Spanner instance
-        resource will result in a NOT_FOUND error if the user has
-        ``spanner.instances.list`` permission on the containing Google
-        Cloud Project. Otherwise returns an empty set of permissions.
-
-        Returns:
-            Callable[[~.TestIamPermissionsRequest],
-                    Awaitable[~.TestIamPermissionsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "test_iam_permissions" not in self._stubs:
-            self._stubs["test_iam_permissions"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/TestIamPermissions",
-                request_serializer=iam_policy_pb2.TestIamPermissionsRequest.SerializeToString,
-                response_deserializer=iam_policy_pb2.TestIamPermissionsResponse.FromString,
-            )
-        return self._stubs["test_iam_permissions"]
-
-    @property
-    def get_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstancePartitionRequest],
-        Awaitable[spanner_instance_admin.InstancePartition],
-    ]:
-        r"""Return a callable for the get instance partition method over gRPC.
-
-        Gets information about a particular instance
-        partition.
-
-        Returns:
-            Callable[[~.GetInstancePartitionRequest],
-                    Awaitable[~.InstancePartition]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_instance_partition" not in self._stubs:
-            self._stubs["get_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/GetInstancePartition",
-                request_serializer=spanner_instance_admin.GetInstancePartitionRequest.serialize,
-                response_deserializer=spanner_instance_admin.InstancePartition.deserialize,
-            )
-        return self._stubs["get_instance_partition"]
-
-    @property
-    def create_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstancePartitionRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the create instance partition method over gRPC.
-
-        Creates an instance partition and begins preparing it to be
-        used. The returned long-running operation can be used to track
-        the progress of preparing the new instance partition. The
-        instance partition name is assigned by the caller. If the named
-        instance partition already exists, ``CreateInstancePartition``
-        returns ``ALREADY_EXISTS``.
-
-        Immediately upon completion of this request:
-
-        - The instance partition is readable via the API, with all
-          requested attributes but no allocated resources. Its state is
-          ``CREATING``.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation renders the instance partition
-          immediately unreadable via the API.
-        - The instance partition can be deleted.
-        - All other attempts to modify the instance partition are
-          rejected.
-
-        Upon completion of the returned operation:
-
-        - Billing for all successfully-allocated resources begins (some
-          types may have lower than the requested levels).
-        - Databases can start using this instance partition.
-        - The instance partition's allocated resource levels are
-          readable via the API.
-        - The instance partition's state becomes ``READY``.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track creation of the instance partition. The
-        metadata field type is
-        [CreateInstancePartitionMetadata][google.spanner.admin.instance.v1.CreateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        Returns:
-            Callable[[~.CreateInstancePartitionRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_instance_partition" not in self._stubs:
-            self._stubs["create_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/CreateInstancePartition",
-                request_serializer=spanner_instance_admin.CreateInstancePartitionRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["create_instance_partition"]
-
-    @property
-    def delete_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstancePartitionRequest],
-        Awaitable[empty_pb2.Empty],
-    ]:
-        r"""Return a callable for the delete instance partition method over gRPC.
-
-        Deletes an existing instance partition. Requires that the
-        instance partition is not used by any database or backup and is
-        not the default instance partition of an instance.
-
-        Authorization requires ``spanner.instancePartitions.delete``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        Returns:
-            Callable[[~.DeleteInstancePartitionRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_instance_partition" not in self._stubs:
-            self._stubs["delete_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/DeleteInstancePartition",
-                request_serializer=spanner_instance_admin.DeleteInstancePartitionRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_instance_partition"]
-
-    @property
-    def update_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstancePartitionRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the update instance partition method over gRPC.
-
-        Updates an instance partition, and begins allocating or
-        releasing resources as requested. The returned long-running
-        operation can be used to track the progress of updating the
-        instance partition. If the named instance partition does not
-        exist, returns ``NOT_FOUND``.
-
-        Immediately upon completion of this request:
-
-        - For resource types for which a decrease in the instance
-          partition's allocation has been requested, billing is based on
-          the newly-requested level.
-
-        Until completion of the returned operation:
-
-        - Cancelling the operation sets its metadata's
-          [cancel_time][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata.cancel_time],
-          and begins restoring resources to their pre-request values.
-          The operation is guaranteed to succeed at undoing all resource
-          changes, after which point it terminates with a ``CANCELLED``
-          status.
-        - All other attempts to modify the instance partition are
-          rejected.
-        - Reading the instance partition via the API continues to give
-          the pre-request resource levels.
-
-        Upon completion of the returned operation:
-
-        - Billing begins for all successfully-allocated resources (some
-          types may have lower than the requested levels).
-        - All newly-reserved resources are available for serving the
-          instance partition's tables.
-        - The instance partition's new resource levels are readable via
-          the API.
-
-        The returned long-running operation will have a name of the
-        format ``<instance_partition_name>/operations/<operation_id>``
-        and can be used to track the instance partition modification.
-        The metadata field type is
-        [UpdateInstancePartitionMetadata][google.spanner.admin.instance.v1.UpdateInstancePartitionMetadata].
-        The response field type is
-        [InstancePartition][google.spanner.admin.instance.v1.InstancePartition],
-        if successful.
-
-        Authorization requires ``spanner.instancePartitions.update``
-        permission on the resource
-        [name][google.spanner.admin.instance.v1.InstancePartition.name].
-
-        Returns:
-            Callable[[~.UpdateInstancePartitionRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "update_instance_partition" not in self._stubs:
-            self._stubs["update_instance_partition"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/UpdateInstancePartition",
-                request_serializer=spanner_instance_admin.UpdateInstancePartitionRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["update_instance_partition"]
-
-    @property
-    def list_instance_partition_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionOperationsRequest],
-        Awaitable[spanner_instance_admin.ListInstancePartitionOperationsResponse],
-    ]:
-        r"""Return a callable for the list instance partition
-        operations method over gRPC.
-
-        Lists instance partition long-running operations in the given
-        instance. An instance partition operation has a name of the form
-        ``projects/<project>/instances/<instance>/instancePartitions/<instance_partition>/operations/<operation>``.
-        The long-running operation metadata field type
-        ``metadata.type_url`` describes the type of the metadata.
-        Operations returned include those that have
-        completed/failed/canceled within the last 7 days, and pending
-        operations. Operations returned are ordered by
-        ``operation.metadata.value.start_time`` in descending order
-        starting from the most recently started operation.
-
-        Authorization requires
-        ``spanner.instancePartitionOperations.list`` permission on the
-        resource
-        [parent][google.spanner.admin.instance.v1.ListInstancePartitionOperationsRequest.parent].
-
-        Returns:
-            Callable[[~.ListInstancePartitionOperationsRequest],
-                    Awaitable[~.ListInstancePartitionOperationsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_instance_partition_operations" not in self._stubs:
-            self._stubs[
-                "list_instance_partition_operations"
-            ] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/ListInstancePartitionOperations",
-                request_serializer=spanner_instance_admin.ListInstancePartitionOperationsRequest.serialize,
-                response_deserializer=spanner_instance_admin.ListInstancePartitionOperationsResponse.deserialize,
-            )
-        return self._stubs["list_instance_partition_operations"]
-
-    @property
-    def move_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.MoveInstanceRequest],
-        Awaitable[operations_pb2.Operation],
-    ]:
-        r"""Return a callable for the move instance method over gRPC.
-
-        Moves an instance to the target instance configuration. You can
-        use the returned long-running operation to track the progress of
-        moving the instance.
-
-        ``MoveInstance`` returns ``FAILED_PRECONDITION`` if the instance
-        meets any of the following criteria:
-
-        - Is undergoing a move to a different instance configuration
-        - Has backups
-        - Has an ongoing update
-        - Contains any CMEK-enabled databases
-        - Is a free trial instance
-
-        While the operation is pending:
-
-        - All other attempts to modify the instance, including changes
-          to its compute capacity, are rejected.
-
-        - The following database and backup admin operations are
-          rejected:
-
-          - ``DatabaseAdmin.CreateDatabase``
-          - ``DatabaseAdmin.UpdateDatabaseDdl`` (disabled if
-            default_leader is specified in the request.)
-          - ``DatabaseAdmin.RestoreDatabase``
-          - ``DatabaseAdmin.CreateBackup``
-          - ``DatabaseAdmin.CopyBackup``
-
-        - Both the source and target instance configurations are subject
-          to hourly compute and storage charges.
-
-        - The instance might experience higher read-write latencies and
-          a higher transaction abort rate. However, moving an instance
-          doesn't cause any downtime.
-
-        The returned long-running operation has a name of the format
-        ``<instance_name>/operations/<operation_id>`` and can be used to
-        track the move instance operation. The metadata field type is
-        [MoveInstanceMetadata][google.spanner.admin.instance.v1.MoveInstanceMetadata].
-        The response field type is
-        [Instance][google.spanner.admin.instance.v1.Instance], if
-        successful. Cancelling the operation sets its metadata's
-        [cancel_time][google.spanner.admin.instance.v1.MoveInstanceMetadata.cancel_time].
-        Cancellation is not immediate because it involves moving any
-        data previously moved to the target instance configuration back
-        to the original instance configuration. You can use this
-        operation to track the progress of the cancellation. Upon
-        successful completion of the cancellation, the operation
-        terminates with ``CANCELLED`` status.
-
-        If not cancelled, upon completion of the returned operation:
-
-        - The instance successfully moves to the target instance
-          configuration.
-        - You are billed for compute and storage in target instance
-          configuration.
-
-        Authorization requires the ``spanner.instances.update``
-        permission on the resource
-        [instance][google.spanner.admin.instance.v1.Instance].
-
-        For more details, see `Move an
-        instance <https://cloud.google.com/spanner/docs/move-instance>`__.
-
-        Returns:
-            Callable[[~.MoveInstanceRequest],
-                    Awaitable[~.Operation]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "move_instance" not in self._stubs:
-            self._stubs["move_instance"] = self._logged_channel.unary_unary(
-                "/google.spanner.admin.instance.v1.InstanceAdmin/MoveInstance",
-                request_serializer=spanner_instance_admin.MoveInstanceRequest.serialize,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["move_instance"]
-
-    def _prep_wrapped_messages(self, client_info):
-        """Precompute the wrapped methods, overriding the base class method to use async wrappers."""
-        self._wrapped_methods = {
-            self.list_instance_configs: self._wrap_method(
-                self.list_instance_configs,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.get_instance_config: self._wrap_method(
-                self.get_instance_config,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_instance_config: self._wrap_method(
-                self.create_instance_config,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.update_instance_config: self._wrap_method(
-                self.update_instance_config,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_instance_config: self._wrap_method(
-                self.delete_instance_config,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_instance_config_operations: self._wrap_method(
-                self.list_instance_config_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_instances: self._wrap_method(
-                self.list_instances,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.list_instance_partitions: self._wrap_method(
-                self.list_instance_partitions,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.get_instance: self._wrap_method(
-                self.get_instance,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.create_instance: self._wrap_method(
-                self.create_instance,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.update_instance: self._wrap_method(
-                self.update_instance,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_instance: self._wrap_method(
-                self.delete_instance,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.set_iam_policy: self._wrap_method(
-                self.set_iam_policy,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.get_iam_policy: self._wrap_method(
-                self.get_iam_policy,
-                default_retry=retries.AsyncRetry(
-                    initial=1.0,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.DeadlineExceeded,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.test_iam_permissions: self._wrap_method(
-                self.test_iam_permissions,
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.get_instance_partition: self._wrap_method(
-                self.get_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.create_instance_partition: self._wrap_method(
-                self.create_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_instance_partition: self._wrap_method(
-                self.delete_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.update_instance_partition: self._wrap_method(
-                self.update_instance_partition,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_instance_partition_operations: self._wrap_method(
-                self.list_instance_partition_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.move_instance: self._wrap_method(
-                self.move_instance,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.cancel_operation: self._wrap_method(
-                self.cancel_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.delete_operation: self._wrap_method(
-                self.delete_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.get_operation: self._wrap_method(
-                self.get_operation,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-            self.list_operations: self._wrap_method(
-                self.list_operations,
-                default_timeout=None,
-                client_info=client_info,
-            ),
-        }
-
-    def _wrap_method(self, func, *args, **kwargs):
-        if self._wrap_with_kind:  # pragma: NO COVER
-            kwargs["kind"] = self.kind
-        return gapic_v1.method_async.wrap_method(func, *args, **kwargs)
-
-    def close(self):
-        return self._logged_channel.close()
-
-    @property
-    def kind(self) -> str:
-        return "grpc_asyncio"
-
-    @property
-    def delete_operation(
-        self,
-    ) -> Callable[[operations_pb2.DeleteOperationRequest], None]:
-        r"""Return a callable for the delete_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_operation" not in self._stubs:
-            self._stubs["delete_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/DeleteOperation",
-                request_serializer=operations_pb2.DeleteOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["delete_operation"]
-
-    @property
-    def cancel_operation(
-        self,
-    ) -> Callable[[operations_pb2.CancelOperationRequest], None]:
-        r"""Return a callable for the cancel_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "cancel_operation" not in self._stubs:
-            self._stubs["cancel_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/CancelOperation",
-                request_serializer=operations_pb2.CancelOperationRequest.SerializeToString,
-                response_deserializer=None,
-            )
-        return self._stubs["cancel_operation"]
-
-    @property
-    def get_operation(
-        self,
-    ) -> Callable[[operations_pb2.GetOperationRequest], operations_pb2.Operation]:
-        r"""Return a callable for the get_operation method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_operation" not in self._stubs:
-            self._stubs["get_operation"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/GetOperation",
-                request_serializer=operations_pb2.GetOperationRequest.SerializeToString,
-                response_deserializer=operations_pb2.Operation.FromString,
-            )
-        return self._stubs["get_operation"]
-
-    @property
-    def list_operations(
-        self,
-    ) -> Callable[
-        [operations_pb2.ListOperationsRequest], operations_pb2.ListOperationsResponse
-    ]:
-        r"""Return a callable for the list_operations method over gRPC."""
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_operations" not in self._stubs:
-            self._stubs["list_operations"] = self._logged_channel.unary_unary(
-                "/google.longrunning.Operations/ListOperations",
-                request_serializer=operations_pb2.ListOperationsRequest.SerializeToString,
-                response_deserializer=operations_pb2.ListOperationsResponse.FromString,
-            )
-        return self._stubs["list_operations"]
-
-
-__all__ = ("InstanceAdminGrpcAsyncIOTransport",)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest.py
deleted file mode 100644
index 4321c74778..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest.py
+++ /dev/null
@@ -1,5496 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import dataclasses
-import json  # type: ignore
-import logging
-from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import gapic_v1, operations_v1, rest_helpers, rest_streaming
-from google.api_core import exceptions as core_exceptions
-from google.api_core import retry as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.requests import AuthorizedSession  # type: ignore
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-import google.protobuf
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import json_format
-from requests import __version__ as requests_version
-
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-from .base import DEFAULT_CLIENT_INFO as BASE_DEFAULT_CLIENT_INFO
-from .rest_base import _BaseInstanceAdminRestTransport
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = logging.getLogger(__name__)
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=BASE_DEFAULT_CLIENT_INFO.gapic_version,
-    grpc_version=None,
-    rest_version=f"requests@{requests_version}",
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-class InstanceAdminRestInterceptor:
-    """Interceptor for InstanceAdmin.
-
-    Interceptors are used to manipulate requests, request metadata, and responses
-    in arbitrary ways.
-    Example use cases include:
-    * Logging
-    * Verifying requests according to service or custom semantics
-    * Stripping extraneous information from responses
-
-    These use cases and more can be enabled by injecting an
-    instance of a custom subclass when constructing the InstanceAdminRestTransport.
-
-    .. code-block:: python
-        class MyCustomInstanceAdminInterceptor(InstanceAdminRestInterceptor):
-            def pre_create_instance(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_create_instance(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_create_instance_config(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_create_instance_config(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_create_instance_partition(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_create_instance_partition(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_delete_instance(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_delete_instance_config(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_delete_instance_partition(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_get_iam_policy(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_iam_policy(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_instance(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_instance(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_instance_config(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_instance_config(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_instance_partition(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_instance_partition(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_instance_config_operations(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_instance_config_operations(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_instance_configs(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_instance_configs(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_instance_partition_operations(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_instance_partition_operations(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_instance_partitions(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_instance_partitions(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_instances(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_instances(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_move_instance(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_move_instance(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_set_iam_policy(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_set_iam_policy(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_test_iam_permissions(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_test_iam_permissions(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_update_instance(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_update_instance(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_update_instance_config(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_update_instance_config(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_update_instance_partition(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_update_instance_partition(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-        transport = InstanceAdminRestTransport(interceptor=MyCustomInstanceAdminInterceptor())
-        client = InstanceAdminClient(transport=transport)
-
-
-    """
-
-    def pre_create_instance(
-        self,
-        request: spanner_instance_admin.CreateInstanceRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.CreateInstanceRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for create_instance
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_create_instance(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for create_instance
-
-        DEPRECATED. Please use the `post_create_instance_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_create_instance` interceptor runs
-        before the `post_create_instance_with_metadata` interceptor.
-        """
-        return response
-
-    def post_create_instance_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for create_instance
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_create_instance_with_metadata`
-        interceptor in new development instead of the `post_create_instance` interceptor.
-        When both interceptors are used, this `post_create_instance_with_metadata` interceptor runs after the
-        `post_create_instance` interceptor. The (possibly modified) response returned by
-        `post_create_instance` will be passed to
-        `post_create_instance_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_create_instance_config(
-        self,
-        request: spanner_instance_admin.CreateInstanceConfigRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.CreateInstanceConfigRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for create_instance_config
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_create_instance_config(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for create_instance_config
-
-        DEPRECATED. Please use the `post_create_instance_config_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_create_instance_config` interceptor runs
-        before the `post_create_instance_config_with_metadata` interceptor.
-        """
-        return response
-
-    def post_create_instance_config_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for create_instance_config
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_create_instance_config_with_metadata`
-        interceptor in new development instead of the `post_create_instance_config` interceptor.
-        When both interceptors are used, this `post_create_instance_config_with_metadata` interceptor runs after the
-        `post_create_instance_config` interceptor. The (possibly modified) response returned by
-        `post_create_instance_config` will be passed to
-        `post_create_instance_config_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_create_instance_partition(
-        self,
-        request: spanner_instance_admin.CreateInstancePartitionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.CreateInstancePartitionRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for create_instance_partition
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_create_instance_partition(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for create_instance_partition
-
-        DEPRECATED. Please use the `post_create_instance_partition_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_create_instance_partition` interceptor runs
-        before the `post_create_instance_partition_with_metadata` interceptor.
-        """
-        return response
-
-    def post_create_instance_partition_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for create_instance_partition
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_create_instance_partition_with_metadata`
-        interceptor in new development instead of the `post_create_instance_partition` interceptor.
-        When both interceptors are used, this `post_create_instance_partition_with_metadata` interceptor runs after the
-        `post_create_instance_partition` interceptor. The (possibly modified) response returned by
-        `post_create_instance_partition` will be passed to
-        `post_create_instance_partition_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_delete_instance(
-        self,
-        request: spanner_instance_admin.DeleteInstanceRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.DeleteInstanceRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for delete_instance
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def pre_delete_instance_config(
-        self,
-        request: spanner_instance_admin.DeleteInstanceConfigRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.DeleteInstanceConfigRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for delete_instance_config
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def pre_delete_instance_partition(
-        self,
-        request: spanner_instance_admin.DeleteInstancePartitionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.DeleteInstancePartitionRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for delete_instance_partition
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def pre_get_iam_policy(
-        self,
-        request: iam_policy_pb2.GetIamPolicyRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.GetIamPolicyRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for get_iam_policy
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_get_iam_policy(self, response: policy_pb2.Policy) -> policy_pb2.Policy:
-        """Post-rpc interceptor for get_iam_policy
-
-        DEPRECATED. Please use the `post_get_iam_policy_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_get_iam_policy` interceptor runs
-        before the `post_get_iam_policy_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_iam_policy_with_metadata(
-        self,
-        response: policy_pb2.Policy,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[policy_pb2.Policy, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for get_iam_policy
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_iam_policy_with_metadata`
-        interceptor in new development instead of the `post_get_iam_policy` interceptor.
-        When both interceptors are used, this `post_get_iam_policy_with_metadata` interceptor runs after the
-        `post_get_iam_policy` interceptor. The (possibly modified) response returned by
-        `post_get_iam_policy` will be passed to
-        `post_get_iam_policy_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_instance(
-        self,
-        request: spanner_instance_admin.GetInstanceRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.GetInstanceRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for get_instance
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_get_instance(
-        self, response: spanner_instance_admin.Instance
-    ) -> spanner_instance_admin.Instance:
-        """Post-rpc interceptor for get_instance
-
-        DEPRECATED. Please use the `post_get_instance_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_get_instance` interceptor runs
-        before the `post_get_instance_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_instance_with_metadata(
-        self,
-        response: spanner_instance_admin.Instance,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.Instance, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for get_instance
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_instance_with_metadata`
-        interceptor in new development instead of the `post_get_instance` interceptor.
-        When both interceptors are used, this `post_get_instance_with_metadata` interceptor runs after the
-        `post_get_instance` interceptor. The (possibly modified) response returned by
-        `post_get_instance` will be passed to
-        `post_get_instance_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_instance_config(
-        self,
-        request: spanner_instance_admin.GetInstanceConfigRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.GetInstanceConfigRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for get_instance_config
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_get_instance_config(
-        self, response: spanner_instance_admin.InstanceConfig
-    ) -> spanner_instance_admin.InstanceConfig:
-        """Post-rpc interceptor for get_instance_config
-
-        DEPRECATED. Please use the `post_get_instance_config_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_get_instance_config` interceptor runs
-        before the `post_get_instance_config_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_instance_config_with_metadata(
-        self,
-        response: spanner_instance_admin.InstanceConfig,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.InstanceConfig, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for get_instance_config
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_instance_config_with_metadata`
-        interceptor in new development instead of the `post_get_instance_config` interceptor.
-        When both interceptors are used, this `post_get_instance_config_with_metadata` interceptor runs after the
-        `post_get_instance_config` interceptor. The (possibly modified) response returned by
-        `post_get_instance_config` will be passed to
-        `post_get_instance_config_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_instance_partition(
-        self,
-        request: spanner_instance_admin.GetInstancePartitionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.GetInstancePartitionRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for get_instance_partition
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_get_instance_partition(
-        self, response: spanner_instance_admin.InstancePartition
-    ) -> spanner_instance_admin.InstancePartition:
-        """Post-rpc interceptor for get_instance_partition
-
-        DEPRECATED. Please use the `post_get_instance_partition_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_get_instance_partition` interceptor runs
-        before the `post_get_instance_partition_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_instance_partition_with_metadata(
-        self,
-        response: spanner_instance_admin.InstancePartition,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.InstancePartition,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for get_instance_partition
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_get_instance_partition_with_metadata`
-        interceptor in new development instead of the `post_get_instance_partition` interceptor.
-        When both interceptors are used, this `post_get_instance_partition_with_metadata` interceptor runs after the
-        `post_get_instance_partition` interceptor. The (possibly modified) response returned by
-        `post_get_instance_partition` will be passed to
-        `post_get_instance_partition_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_instance_config_operations(
-        self,
-        request: spanner_instance_admin.ListInstanceConfigOperationsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstanceConfigOperationsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_instance_config_operations
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_list_instance_config_operations(
-        self, response: spanner_instance_admin.ListInstanceConfigOperationsResponse
-    ) -> spanner_instance_admin.ListInstanceConfigOperationsResponse:
-        """Post-rpc interceptor for list_instance_config_operations
-
-        DEPRECATED. Please use the `post_list_instance_config_operations_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_list_instance_config_operations` interceptor runs
-        before the `post_list_instance_config_operations_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_instance_config_operations_with_metadata(
-        self,
-        response: spanner_instance_admin.ListInstanceConfigOperationsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstanceConfigOperationsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_instance_config_operations
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_instance_config_operations_with_metadata`
-        interceptor in new development instead of the `post_list_instance_config_operations` interceptor.
-        When both interceptors are used, this `post_list_instance_config_operations_with_metadata` interceptor runs after the
-        `post_list_instance_config_operations` interceptor. The (possibly modified) response returned by
-        `post_list_instance_config_operations` will be passed to
-        `post_list_instance_config_operations_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_instance_configs(
-        self,
-        request: spanner_instance_admin.ListInstanceConfigsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstanceConfigsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_instance_configs
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_list_instance_configs(
-        self, response: spanner_instance_admin.ListInstanceConfigsResponse
-    ) -> spanner_instance_admin.ListInstanceConfigsResponse:
-        """Post-rpc interceptor for list_instance_configs
-
-        DEPRECATED. Please use the `post_list_instance_configs_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_list_instance_configs` interceptor runs
-        before the `post_list_instance_configs_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_instance_configs_with_metadata(
-        self,
-        response: spanner_instance_admin.ListInstanceConfigsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstanceConfigsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_instance_configs
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_instance_configs_with_metadata`
-        interceptor in new development instead of the `post_list_instance_configs` interceptor.
-        When both interceptors are used, this `post_list_instance_configs_with_metadata` interceptor runs after the
-        `post_list_instance_configs` interceptor. The (possibly modified) response returned by
-        `post_list_instance_configs` will be passed to
-        `post_list_instance_configs_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_instance_partition_operations(
-        self,
-        request: spanner_instance_admin.ListInstancePartitionOperationsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstancePartitionOperationsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_instance_partition_operations
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_list_instance_partition_operations(
-        self, response: spanner_instance_admin.ListInstancePartitionOperationsResponse
-    ) -> spanner_instance_admin.ListInstancePartitionOperationsResponse:
-        """Post-rpc interceptor for list_instance_partition_operations
-
-        DEPRECATED. Please use the `post_list_instance_partition_operations_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_list_instance_partition_operations` interceptor runs
-        before the `post_list_instance_partition_operations_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_instance_partition_operations_with_metadata(
-        self,
-        response: spanner_instance_admin.ListInstancePartitionOperationsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstancePartitionOperationsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_instance_partition_operations
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_instance_partition_operations_with_metadata`
-        interceptor in new development instead of the `post_list_instance_partition_operations` interceptor.
-        When both interceptors are used, this `post_list_instance_partition_operations_with_metadata` interceptor runs after the
-        `post_list_instance_partition_operations` interceptor. The (possibly modified) response returned by
-        `post_list_instance_partition_operations` will be passed to
-        `post_list_instance_partition_operations_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_instance_partitions(
-        self,
-        request: spanner_instance_admin.ListInstancePartitionsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstancePartitionsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_instance_partitions
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_list_instance_partitions(
-        self, response: spanner_instance_admin.ListInstancePartitionsResponse
-    ) -> spanner_instance_admin.ListInstancePartitionsResponse:
-        """Post-rpc interceptor for list_instance_partitions
-
-        DEPRECATED. Please use the `post_list_instance_partitions_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_list_instance_partitions` interceptor runs
-        before the `post_list_instance_partitions_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_instance_partitions_with_metadata(
-        self,
-        response: spanner_instance_admin.ListInstancePartitionsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstancePartitionsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_instance_partitions
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_instance_partitions_with_metadata`
-        interceptor in new development instead of the `post_list_instance_partitions` interceptor.
-        When both interceptors are used, this `post_list_instance_partitions_with_metadata` interceptor runs after the
-        `post_list_instance_partitions` interceptor. The (possibly modified) response returned by
-        `post_list_instance_partitions` will be passed to
-        `post_list_instance_partitions_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_instances(
-        self,
-        request: spanner_instance_admin.ListInstancesRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstancesRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for list_instances
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_list_instances(
-        self, response: spanner_instance_admin.ListInstancesResponse
-    ) -> spanner_instance_admin.ListInstancesResponse:
-        """Post-rpc interceptor for list_instances
-
-        DEPRECATED. Please use the `post_list_instances_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_list_instances` interceptor runs
-        before the `post_list_instances_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_instances_with_metadata(
-        self,
-        response: spanner_instance_admin.ListInstancesResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.ListInstancesResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for list_instances
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_list_instances_with_metadata`
-        interceptor in new development instead of the `post_list_instances` interceptor.
-        When both interceptors are used, this `post_list_instances_with_metadata` interceptor runs after the
-        `post_list_instances` interceptor. The (possibly modified) response returned by
-        `post_list_instances` will be passed to
-        `post_list_instances_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_move_instance(
-        self,
-        request: spanner_instance_admin.MoveInstanceRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.MoveInstanceRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for move_instance
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_move_instance(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for move_instance
-
-        DEPRECATED. Please use the `post_move_instance_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_move_instance` interceptor runs
-        before the `post_move_instance_with_metadata` interceptor.
-        """
-        return response
-
-    def post_move_instance_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for move_instance
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_move_instance_with_metadata`
-        interceptor in new development instead of the `post_move_instance` interceptor.
-        When both interceptors are used, this `post_move_instance_with_metadata` interceptor runs after the
-        `post_move_instance` interceptor. The (possibly modified) response returned by
-        `post_move_instance` will be passed to
-        `post_move_instance_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_set_iam_policy(
-        self,
-        request: iam_policy_pb2.SetIamPolicyRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.SetIamPolicyRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for set_iam_policy
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_set_iam_policy(self, response: policy_pb2.Policy) -> policy_pb2.Policy:
-        """Post-rpc interceptor for set_iam_policy
-
-        DEPRECATED. Please use the `post_set_iam_policy_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_set_iam_policy` interceptor runs
-        before the `post_set_iam_policy_with_metadata` interceptor.
-        """
-        return response
-
-    def post_set_iam_policy_with_metadata(
-        self,
-        response: policy_pb2.Policy,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[policy_pb2.Policy, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for set_iam_policy
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_set_iam_policy_with_metadata`
-        interceptor in new development instead of the `post_set_iam_policy` interceptor.
-        When both interceptors are used, this `post_set_iam_policy_with_metadata` interceptor runs after the
-        `post_set_iam_policy` interceptor. The (possibly modified) response returned by
-        `post_set_iam_policy` will be passed to
-        `post_set_iam_policy_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_test_iam_permissions(
-        self,
-        request: iam_policy_pb2.TestIamPermissionsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.TestIamPermissionsRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for test_iam_permissions
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_test_iam_permissions(
-        self, response: iam_policy_pb2.TestIamPermissionsResponse
-    ) -> iam_policy_pb2.TestIamPermissionsResponse:
-        """Post-rpc interceptor for test_iam_permissions
-
-        DEPRECATED. Please use the `post_test_iam_permissions_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_test_iam_permissions` interceptor runs
-        before the `post_test_iam_permissions_with_metadata` interceptor.
-        """
-        return response
-
-    def post_test_iam_permissions_with_metadata(
-        self,
-        response: iam_policy_pb2.TestIamPermissionsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        iam_policy_pb2.TestIamPermissionsResponse,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Post-rpc interceptor for test_iam_permissions
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_test_iam_permissions_with_metadata`
-        interceptor in new development instead of the `post_test_iam_permissions` interceptor.
-        When both interceptors are used, this `post_test_iam_permissions_with_metadata` interceptor runs after the
-        `post_test_iam_permissions` interceptor. The (possibly modified) response returned by
-        `post_test_iam_permissions` will be passed to
-        `post_test_iam_permissions_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_update_instance(
-        self,
-        request: spanner_instance_admin.UpdateInstanceRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.UpdateInstanceRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for update_instance
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_update_instance(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for update_instance
-
-        DEPRECATED. Please use the `post_update_instance_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_update_instance` interceptor runs
-        before the `post_update_instance_with_metadata` interceptor.
-        """
-        return response
-
-    def post_update_instance_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for update_instance
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_update_instance_with_metadata`
-        interceptor in new development instead of the `post_update_instance` interceptor.
-        When both interceptors are used, this `post_update_instance_with_metadata` interceptor runs after the
-        `post_update_instance` interceptor. The (possibly modified) response returned by
-        `post_update_instance` will be passed to
-        `post_update_instance_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_update_instance_config(
-        self,
-        request: spanner_instance_admin.UpdateInstanceConfigRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.UpdateInstanceConfigRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for update_instance_config
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_update_instance_config(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for update_instance_config
-
-        DEPRECATED. Please use the `post_update_instance_config_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_update_instance_config` interceptor runs
-        before the `post_update_instance_config_with_metadata` interceptor.
-        """
-        return response
-
-    def post_update_instance_config_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for update_instance_config
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_update_instance_config_with_metadata`
-        interceptor in new development instead of the `post_update_instance_config` interceptor.
-        When both interceptors are used, this `post_update_instance_config_with_metadata` interceptor runs after the
-        `post_update_instance_config` interceptor. The (possibly modified) response returned by
-        `post_update_instance_config` will be passed to
-        `post_update_instance_config_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_update_instance_partition(
-        self,
-        request: spanner_instance_admin.UpdateInstancePartitionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner_instance_admin.UpdateInstancePartitionRequest,
-        Sequence[Tuple[str, Union[str, bytes]]],
-    ]:
-        """Pre-rpc interceptor for update_instance_partition
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_update_instance_partition(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for update_instance_partition
-
-        DEPRECATED. Please use the `post_update_instance_partition_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code. This `post_update_instance_partition` interceptor runs
-        before the `post_update_instance_partition_with_metadata` interceptor.
-        """
-        return response
-
-    def post_update_instance_partition_with_metadata(
-        self,
-        response: operations_pb2.Operation,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[operations_pb2.Operation, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for update_instance_partition
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the InstanceAdmin server but before it is returned to user code.
-
-        We recommend only using this `post_update_instance_partition_with_metadata`
-        interceptor in new development instead of the `post_update_instance_partition` interceptor.
-        When both interceptors are used, this `post_update_instance_partition_with_metadata` interceptor runs after the
-        `post_update_instance_partition` interceptor. The (possibly modified) response returned by
-        `post_update_instance_partition` will be passed to
-        `post_update_instance_partition_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_cancel_operation(
-        self,
-        request: operations_pb2.CancelOperationRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.CancelOperationRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for cancel_operation
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_cancel_operation(self, response: None) -> None:
-        """Post-rpc interceptor for cancel_operation
-
-        Override in a subclass to manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-    def pre_delete_operation(
-        self,
-        request: operations_pb2.DeleteOperationRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.DeleteOperationRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for delete_operation
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_delete_operation(self, response: None) -> None:
-        """Post-rpc interceptor for delete_operation
-
-        Override in a subclass to manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-    def pre_get_operation(
-        self,
-        request: operations_pb2.GetOperationRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.GetOperationRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for get_operation
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_get_operation(
-        self, response: operations_pb2.Operation
-    ) -> operations_pb2.Operation:
-        """Post-rpc interceptor for get_operation
-
-        Override in a subclass to manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-    def pre_list_operations(
-        self,
-        request: operations_pb2.ListOperationsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        operations_pb2.ListOperationsRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for list_operations
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the InstanceAdmin server.
-        """
-        return request, metadata
-
-    def post_list_operations(
-        self, response: operations_pb2.ListOperationsResponse
-    ) -> operations_pb2.ListOperationsResponse:
-        """Post-rpc interceptor for list_operations
-
-        Override in a subclass to manipulate the response
-        after it is returned by the InstanceAdmin server but before
-        it is returned to user code.
-        """
-        return response
-
-
-@dataclasses.dataclass
-class InstanceAdminRestStub:
-    _session: AuthorizedSession
-    _host: str
-    _interceptor: InstanceAdminRestInterceptor
-
-
-class InstanceAdminRestTransport(_BaseInstanceAdminRestTransport):
-    """REST backend synchronous transport for InstanceAdmin.
-
-    Cloud Spanner Instance Admin API
-
-    The Cloud Spanner Instance Admin API can be used to create,
-    delete, modify and list instances. Instances are dedicated Cloud
-    Spanner serving and storage resources to be used by Cloud
-    Spanner databases.
-
-    Each instance has a "configuration", which dictates where the
-    serving resources for the Cloud Spanner instance are located
-    (e.g., US-central, Europe). Configurations are created by Google
-    based on resource availability.
-
-    Cloud Spanner billing is based on the instances that exist and
-    their sizes. After an instance exists, there are no additional
-    per-database or per-operation charges for use of the instance
-    (though there may be additional network bandwidth charges).
-    Instances offer isolation: problems with databases in one
-    instance will not affect other instances. However, within an
-    instance databases can affect each other. For example, if one
-    database in an instance receives a lot of requests and consumes
-    most of the instance resources, fewer resources are available
-    for other databases in that instance, and their performance may
-    suffer.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends JSON representations of protocol buffers over HTTP/1.1
-    """
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        url_scheme: str = "https",
-        interceptor: Optional[InstanceAdminRestInterceptor] = None,
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if ``channel`` is provided. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional(Sequence[str])): A list of scopes. This argument is
-                ignored if ``channel`` is provided.
-            client_cert_source_for_mtls (Callable[[], Tuple[bytes, bytes]]): Client
-                certificate to configure mutual TLS HTTP channel. It is ignored
-                if ``channel`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you are developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-            url_scheme: the protocol scheme for the API endpoint.  Normally
-                "https", but for testing or local servers,
-                "http" can be specified.
-        """
-        # Run the base constructor
-        # TODO(yon-mg): resolve other ctor params i.e. scopes, quota, etc.
-        # TODO: When custom host (api_endpoint) is set, `scopes` must *also* be set on the
-        # credentials object
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            url_scheme=url_scheme,
-            api_audience=api_audience,
-        )
-        self._session = AuthorizedSession(
-            self._credentials, default_host=self.DEFAULT_HOST
-        )
-        self._operations_client: Optional[operations_v1.AbstractOperationsClient] = None
-        if client_cert_source_for_mtls:
-            self._session.configure_mtls_channel(client_cert_source_for_mtls)
-        self._interceptor = interceptor or InstanceAdminRestInterceptor()
-        self._prep_wrapped_messages(client_info)
-
-    @property
-    def operations_client(self) -> operations_v1.AbstractOperationsClient:
-        """Create the client designed to process long-running operations.
-
-        This property caches on the instance; repeated calls return the same
-        client.
-        """
-        # Only create a new client if we do not already have one.
-        if self._operations_client is None:
-            http_options: Dict[str, List[Dict[str, str]]] = {
-                "google.longrunning.Operations.CancelOperation": [
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instances/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}:cancel",
-                    },
-                    {
-                        "method": "post",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations/*}:cancel",
-                    },
-                ],
-                "google.longrunning.Operations.DeleteOperation": [
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                    },
-                    {
-                        "method": "delete",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations/*}",
-                    },
-                ],
-                "google.longrunning.Operations.GetOperation": [
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations/*}",
-                    },
-                ],
-                "google.longrunning.Operations.ListOperations": [
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/databases/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/backups/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/operations}",
-                    },
-                    {
-                        "method": "get",
-                        "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations}",
-                    },
-                ],
-            }
-
-            rest_transport = operations_v1.OperationsRestTransport(
-                host=self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                scopes=self._scopes,
-                http_options=http_options,
-                path_prefix="v1",
-            )
-
-            self._operations_client = operations_v1.AbstractOperationsClient(
-                transport=rest_transport
-            )
-
-        # Return the client from cache.
-        return self._operations_client
-
-    class _CreateInstance(
-        _BaseInstanceAdminRestTransport._BaseCreateInstance, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.CreateInstance")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.CreateInstanceRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the create instance method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.CreateInstanceRequest):
-                    The request object. The request for
-                [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseCreateInstance._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_create_instance(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseCreateInstance._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseCreateInstance._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseCreateInstance._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.CreateInstance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "CreateInstance",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._CreateInstance._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_create_instance(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_create_instance_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.create_instance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "CreateInstance",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _CreateInstanceConfig(
-        _BaseInstanceAdminRestTransport._BaseCreateInstanceConfig, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.CreateInstanceConfig")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.CreateInstanceConfigRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the create instance config method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.CreateInstanceConfigRequest):
-                    The request object. The request for
-                [CreateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstanceConfig].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseCreateInstanceConfig._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_create_instance_config(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseCreateInstanceConfig._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseCreateInstanceConfig._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseCreateInstanceConfig._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.CreateInstanceConfig",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "CreateInstanceConfig",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._CreateInstanceConfig._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_create_instance_config(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_create_instance_config_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.create_instance_config",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "CreateInstanceConfig",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _CreateInstancePartition(
-        _BaseInstanceAdminRestTransport._BaseCreateInstancePartition,
-        InstanceAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.CreateInstancePartition")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.CreateInstancePartitionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the create instance partition method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.CreateInstancePartitionRequest):
-                    The request object. The request for
-                [CreateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstancePartition].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseCreateInstancePartition._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_create_instance_partition(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseCreateInstancePartition._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseCreateInstancePartition._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseCreateInstancePartition._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.CreateInstancePartition",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "CreateInstancePartition",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = (
-                InstanceAdminRestTransport._CreateInstancePartition._get_response(
-                    self._host,
-                    metadata,
-                    query_params,
-                    self._session,
-                    timeout,
-                    transcoded_request,
-                    body,
-                )
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_create_instance_partition(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_create_instance_partition_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.create_instance_partition",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "CreateInstancePartition",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _DeleteInstance(
-        _BaseInstanceAdminRestTransport._BaseDeleteInstance, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.DeleteInstance")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.DeleteInstanceRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the delete instance method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.DeleteInstanceRequest):
-                    The request object. The request for
-                [DeleteInstance][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstance].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseDeleteInstance._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_instance(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseDeleteInstance._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseDeleteInstance._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.DeleteInstance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "DeleteInstance",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._DeleteInstance._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _DeleteInstanceConfig(
-        _BaseInstanceAdminRestTransport._BaseDeleteInstanceConfig, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.DeleteInstanceConfig")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.DeleteInstanceConfigRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the delete instance config method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.DeleteInstanceConfigRequest):
-                    The request object. The request for
-                [DeleteInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstanceConfig].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseDeleteInstanceConfig._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_instance_config(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseDeleteInstanceConfig._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseDeleteInstanceConfig._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.DeleteInstanceConfig",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "DeleteInstanceConfig",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._DeleteInstanceConfig._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _DeleteInstancePartition(
-        _BaseInstanceAdminRestTransport._BaseDeleteInstancePartition,
-        InstanceAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.DeleteInstancePartition")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.DeleteInstancePartitionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the delete instance partition method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.DeleteInstancePartitionRequest):
-                    The request object. The request for
-                [DeleteInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstancePartition].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseDeleteInstancePartition._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_instance_partition(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseDeleteInstancePartition._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseDeleteInstancePartition._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.DeleteInstancePartition",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "DeleteInstancePartition",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = (
-                InstanceAdminRestTransport._DeleteInstancePartition._get_response(
-                    self._host,
-                    metadata,
-                    query_params,
-                    self._session,
-                    timeout,
-                    transcoded_request,
-                )
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _GetIamPolicy(
-        _BaseInstanceAdminRestTransport._BaseGetIamPolicy, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.GetIamPolicy")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: iam_policy_pb2.GetIamPolicyRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> policy_pb2.Policy:
-            r"""Call the get iam policy method over HTTP.
-
-            Args:
-                request (~.iam_policy_pb2.GetIamPolicyRequest):
-                    The request object. Request message for ``GetIamPolicy`` method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.policy_pb2.Policy:
-                    An Identity and Access Management (IAM) policy, which
-                specifies access controls for Google Cloud resources.
-
-                A ``Policy`` is a collection of ``bindings``. A
-                ``binding`` binds one or more ``members``, or
-                principals, to a single ``role``. Principals can be user
-                accounts, service accounts, Google groups, and domains
-                (such as G Suite). A ``role`` is a named list of
-                permissions; each ``role`` can be an IAM predefined role
-                or a user-created custom role.
-
-                For some types of Google Cloud resources, a ``binding``
-                can also specify a ``condition``, which is a logical
-                expression that allows access to a resource only if the
-                expression evaluates to ``true``. A condition can add
-                constraints based on attributes of the request, the
-                resource, or both. To learn which resources support
-                conditions in their IAM policies, see the `IAM
-                documentation <https://cloud.google.com/iam/help/conditions/resource-policies>`__.
-
-                **JSON example:**
-
-                ::
-
-                       {
-                         "bindings": [
-                           {
-                             "role": "roles/resourcemanager.organizationAdmin",
-                             "members": [
-                               "user:mike@example.com",
-                               "group:admins@example.com",
-                               "domain:google.com",
-                               "serviceAccount:my-project-id@appspot.gserviceaccount.com"
-                             ]
-                           },
-                           {
-                             "role": "roles/resourcemanager.organizationViewer",
-                             "members": [
-                               "user:eve@example.com"
-                             ],
-                             "condition": {
-                               "title": "expirable access",
-                               "description": "Does not grant access after Sep 2020",
-                               "expression": "request.time <
-                               timestamp('2020-10-01T00:00:00.000Z')",
-                             }
-                           }
-                         ],
-                         "etag": "BwWWja0YfJA=",
-                         "version": 3
-                       }
-
-                **YAML example:**
-
-                ::
-
-                       bindings:
-                       - members:
-                         - user:mike@example.com
-                         - group:admins@example.com
-                         - domain:google.com
-                         - serviceAccount:my-project-id@appspot.gserviceaccount.com
-                         role: roles/resourcemanager.organizationAdmin
-                       - members:
-                         - user:eve@example.com
-                         role: roles/resourcemanager.organizationViewer
-                         condition:
-                           title: expirable access
-                           description: Does not grant access after Sep 2020
-                           expression: request.time < timestamp('2020-10-01T00:00:00.000Z')
-                       etag: BwWWja0YfJA=
-                       version: 3
-
-                For a description of IAM and its features, see the `IAM
-                documentation <https://cloud.google.com/iam/docs/>`__.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseGetIamPolicy._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_iam_policy(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseGetIamPolicy._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseGetIamPolicy._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseGetIamPolicy._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.GetIamPolicy",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetIamPolicy",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._GetIamPolicy._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = policy_pb2.Policy()
-            pb_resp = resp
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_iam_policy(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_iam_policy_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.get_iam_policy",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetIamPolicy",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetInstance(
-        _BaseInstanceAdminRestTransport._BaseGetInstance, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.GetInstance")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.GetInstanceRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.Instance:
-            r"""Call the get instance method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.GetInstanceRequest):
-                    The request object. The request for
-                [GetInstance][google.spanner.admin.instance.v1.InstanceAdmin.GetInstance].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_instance_admin.Instance:
-                    An isolated set of Cloud Spanner
-                resources on which databases can be
-                hosted.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseGetInstance._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_instance(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseGetInstance._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseInstanceAdminRestTransport._BaseGetInstance._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.GetInstance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetInstance",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._GetInstance._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.Instance()
-            pb_resp = spanner_instance_admin.Instance.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_instance(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_instance_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner_instance_admin.Instance.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.get_instance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetInstance",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetInstanceConfig(
-        _BaseInstanceAdminRestTransport._BaseGetInstanceConfig, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.GetInstanceConfig")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.GetInstanceConfigRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.InstanceConfig:
-            r"""Call the get instance config method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.GetInstanceConfigRequest):
-                    The request object. The request for
-                [GetInstanceConfigRequest][google.spanner.admin.instance.v1.InstanceAdmin.GetInstanceConfig].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_instance_admin.InstanceConfig:
-                    A possible configuration for a Cloud
-                Spanner instance. Configurations define
-                the geographic placement of nodes and
-                their replication.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseGetInstanceConfig._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_instance_config(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseGetInstanceConfig._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseGetInstanceConfig._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.GetInstanceConfig",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetInstanceConfig",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._GetInstanceConfig._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.InstanceConfig()
-            pb_resp = spanner_instance_admin.InstanceConfig.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_instance_config(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_instance_config_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner_instance_admin.InstanceConfig.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.get_instance_config",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetInstanceConfig",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetInstancePartition(
-        _BaseInstanceAdminRestTransport._BaseGetInstancePartition, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.GetInstancePartition")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.GetInstancePartitionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.InstancePartition:
-            r"""Call the get instance partition method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.GetInstancePartitionRequest):
-                    The request object. The request for
-                [GetInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.GetInstancePartition].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_instance_admin.InstancePartition:
-                    An isolated set of Cloud Spanner
-                resources that databases can define
-                placements on.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseGetInstancePartition._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_instance_partition(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseGetInstancePartition._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseGetInstancePartition._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.GetInstancePartition",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetInstancePartition",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._GetInstancePartition._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.InstancePartition()
-            pb_resp = spanner_instance_admin.InstancePartition.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_instance_partition(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_instance_partition_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner_instance_admin.InstancePartition.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.get_instance_partition",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetInstancePartition",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListInstanceConfigOperations(
-        _BaseInstanceAdminRestTransport._BaseListInstanceConfigOperations,
-        InstanceAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.ListInstanceConfigOperations")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.ListInstanceConfigOperationsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.ListInstanceConfigOperationsResponse:
-            r"""Call the list instance config
-            operations method over HTTP.
-
-                Args:
-                    request (~.spanner_instance_admin.ListInstanceConfigOperationsRequest):
-                        The request object. The request for
-                    [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-                    retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                        should be retried.
-                    timeout (float): The timeout for this request.
-                    metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                        sent along with the request as metadata. Normally, each value must be of type `str`,
-                        but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                        be of type `bytes`.
-
-                Returns:
-                    ~.spanner_instance_admin.ListInstanceConfigOperationsResponse:
-                        The response for
-                    [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseListInstanceConfigOperations._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_instance_config_operations(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseListInstanceConfigOperations._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseListInstanceConfigOperations._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.ListInstanceConfigOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstanceConfigOperations",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = (
-                InstanceAdminRestTransport._ListInstanceConfigOperations._get_response(
-                    self._host,
-                    metadata,
-                    query_params,
-                    self._session,
-                    timeout,
-                    transcoded_request,
-                )
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.ListInstanceConfigOperationsResponse()
-            pb_resp = spanner_instance_admin.ListInstanceConfigOperationsResponse.pb(
-                resp
-            )
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_instance_config_operations(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            (
-                resp,
-                _,
-            ) = self._interceptor.post_list_instance_config_operations_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner_instance_admin.ListInstanceConfigOperationsResponse.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.list_instance_config_operations",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstanceConfigOperations",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListInstanceConfigs(
-        _BaseInstanceAdminRestTransport._BaseListInstanceConfigs, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.ListInstanceConfigs")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.ListInstanceConfigsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.ListInstanceConfigsResponse:
-            r"""Call the list instance configs method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.ListInstanceConfigsRequest):
-                    The request object. The request for
-                [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_instance_admin.ListInstanceConfigsResponse:
-                    The response for
-                [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseListInstanceConfigs._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_instance_configs(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseListInstanceConfigs._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseListInstanceConfigs._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.ListInstanceConfigs",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstanceConfigs",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._ListInstanceConfigs._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.ListInstanceConfigsResponse()
-            pb_resp = spanner_instance_admin.ListInstanceConfigsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_instance_configs(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_instance_configs_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_instance_admin.ListInstanceConfigsResponse.to_json(
-                            response
-                        )
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.list_instance_configs",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstanceConfigs",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListInstancePartitionOperations(
-        _BaseInstanceAdminRestTransport._BaseListInstancePartitionOperations,
-        InstanceAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.ListInstancePartitionOperations")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.ListInstancePartitionOperationsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.ListInstancePartitionOperationsResponse:
-            r"""Call the list instance partition
-            operations method over HTTP.
-
-                Args:
-                    request (~.spanner_instance_admin.ListInstancePartitionOperationsRequest):
-                        The request object. The request for
-                    [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-                    retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                        should be retried.
-                    timeout (float): The timeout for this request.
-                    metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                        sent along with the request as metadata. Normally, each value must be of type `str`,
-                        but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                        be of type `bytes`.
-
-                Returns:
-                    ~.spanner_instance_admin.ListInstancePartitionOperationsResponse:
-                        The response for
-                    [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseListInstancePartitionOperations._get_http_options()
-            )
-
-            (
-                request,
-                metadata,
-            ) = self._interceptor.pre_list_instance_partition_operations(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseListInstancePartitionOperations._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseListInstancePartitionOperations._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.ListInstancePartitionOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstancePartitionOperations",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._ListInstancePartitionOperations._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.ListInstancePartitionOperationsResponse()
-            pb_resp = spanner_instance_admin.ListInstancePartitionOperationsResponse.pb(
-                resp
-            )
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_instance_partition_operations(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            (
-                resp,
-                _,
-            ) = self._interceptor.post_list_instance_partition_operations_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner_instance_admin.ListInstancePartitionOperationsResponse.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.list_instance_partition_operations",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstancePartitionOperations",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListInstancePartitions(
-        _BaseInstanceAdminRestTransport._BaseListInstancePartitions,
-        InstanceAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.ListInstancePartitions")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.ListInstancePartitionsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.ListInstancePartitionsResponse:
-            r"""Call the list instance partitions method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.ListInstancePartitionsRequest):
-                    The request object. The request for
-                [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_instance_admin.ListInstancePartitionsResponse:
-                    The response for
-                [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseListInstancePartitions._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_instance_partitions(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseListInstancePartitions._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseListInstancePartitions._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.ListInstancePartitions",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstancePartitions",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._ListInstancePartitions._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.ListInstancePartitionsResponse()
-            pb_resp = spanner_instance_admin.ListInstancePartitionsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_instance_partitions(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_instance_partitions_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_instance_admin.ListInstancePartitionsResponse.to_json(
-                            response
-                        )
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.list_instance_partitions",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstancePartitions",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListInstances(
-        _BaseInstanceAdminRestTransport._BaseListInstances, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.ListInstances")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.ListInstancesRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner_instance_admin.ListInstancesResponse:
-            r"""Call the list instances method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.ListInstancesRequest):
-                    The request object. The request for
-                [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner_instance_admin.ListInstancesResponse:
-                    The response for
-                [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseListInstances._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_instances(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseListInstances._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseListInstances._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.ListInstances",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstances",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._ListInstances._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner_instance_admin.ListInstancesResponse()
-            pb_resp = spanner_instance_admin.ListInstancesResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_instances(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_instances_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = (
-                        spanner_instance_admin.ListInstancesResponse.to_json(response)
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.list_instances",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListInstances",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _MoveInstance(
-        _BaseInstanceAdminRestTransport._BaseMoveInstance, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.MoveInstance")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.MoveInstanceRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the move instance method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.MoveInstanceRequest):
-                    The request object. The request for
-                [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseMoveInstance._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_move_instance(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseMoveInstance._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseMoveInstance._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseMoveInstance._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.MoveInstance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "MoveInstance",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._MoveInstance._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_move_instance(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_move_instance_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.move_instance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "MoveInstance",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _SetIamPolicy(
-        _BaseInstanceAdminRestTransport._BaseSetIamPolicy, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.SetIamPolicy")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: iam_policy_pb2.SetIamPolicyRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> policy_pb2.Policy:
-            r"""Call the set iam policy method over HTTP.
-
-            Args:
-                request (~.iam_policy_pb2.SetIamPolicyRequest):
-                    The request object. Request message for ``SetIamPolicy`` method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.policy_pb2.Policy:
-                    An Identity and Access Management (IAM) policy, which
-                specifies access controls for Google Cloud resources.
-
-                A ``Policy`` is a collection of ``bindings``. A
-                ``binding`` binds one or more ``members``, or
-                principals, to a single ``role``. Principals can be user
-                accounts, service accounts, Google groups, and domains
-                (such as G Suite). A ``role`` is a named list of
-                permissions; each ``role`` can be an IAM predefined role
-                or a user-created custom role.
-
-                For some types of Google Cloud resources, a ``binding``
-                can also specify a ``condition``, which is a logical
-                expression that allows access to a resource only if the
-                expression evaluates to ``true``. A condition can add
-                constraints based on attributes of the request, the
-                resource, or both. To learn which resources support
-                conditions in their IAM policies, see the `IAM
-                documentation <https://cloud.google.com/iam/help/conditions/resource-policies>`__.
-
-                **JSON example:**
-
-                ::
-
-                       {
-                         "bindings": [
-                           {
-                             "role": "roles/resourcemanager.organizationAdmin",
-                             "members": [
-                               "user:mike@example.com",
-                               "group:admins@example.com",
-                               "domain:google.com",
-                               "serviceAccount:my-project-id@appspot.gserviceaccount.com"
-                             ]
-                           },
-                           {
-                             "role": "roles/resourcemanager.organizationViewer",
-                             "members": [
-                               "user:eve@example.com"
-                             ],
-                             "condition": {
-                               "title": "expirable access",
-                               "description": "Does not grant access after Sep 2020",
-                               "expression": "request.time <
-                               timestamp('2020-10-01T00:00:00.000Z')",
-                             }
-                           }
-                         ],
-                         "etag": "BwWWja0YfJA=",
-                         "version": 3
-                       }
-
-                **YAML example:**
-
-                ::
-
-                       bindings:
-                       - members:
-                         - user:mike@example.com
-                         - group:admins@example.com
-                         - domain:google.com
-                         - serviceAccount:my-project-id@appspot.gserviceaccount.com
-                         role: roles/resourcemanager.organizationAdmin
-                       - members:
-                         - user:eve@example.com
-                         role: roles/resourcemanager.organizationViewer
-                         condition:
-                           title: expirable access
-                           description: Does not grant access after Sep 2020
-                           expression: request.time < timestamp('2020-10-01T00:00:00.000Z')
-                       etag: BwWWja0YfJA=
-                       version: 3
-
-                For a description of IAM and its features, see the `IAM
-                documentation <https://cloud.google.com/iam/docs/>`__.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseSetIamPolicy._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_set_iam_policy(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseSetIamPolicy._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseSetIamPolicy._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseSetIamPolicy._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.SetIamPolicy",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "SetIamPolicy",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._SetIamPolicy._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = policy_pb2.Policy()
-            pb_resp = resp
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_set_iam_policy(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_set_iam_policy_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.set_iam_policy",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "SetIamPolicy",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _TestIamPermissions(
-        _BaseInstanceAdminRestTransport._BaseTestIamPermissions, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.TestIamPermissions")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: iam_policy_pb2.TestIamPermissionsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> iam_policy_pb2.TestIamPermissionsResponse:
-            r"""Call the test iam permissions method over HTTP.
-
-            Args:
-                request (~.iam_policy_pb2.TestIamPermissionsRequest):
-                    The request object. Request message for ``TestIamPermissions`` method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.iam_policy_pb2.TestIamPermissionsResponse:
-                    Response message for ``TestIamPermissions`` method.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseTestIamPermissions._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_test_iam_permissions(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseTestIamPermissions._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseTestIamPermissions._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseTestIamPermissions._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.TestIamPermissions",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "TestIamPermissions",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._TestIamPermissions._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = iam_policy_pb2.TestIamPermissionsResponse()
-            pb_resp = resp
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_test_iam_permissions(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_test_iam_permissions_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.test_iam_permissions",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "TestIamPermissions",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _UpdateInstance(
-        _BaseInstanceAdminRestTransport._BaseUpdateInstance, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.UpdateInstance")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.UpdateInstanceRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the update instance method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.UpdateInstanceRequest):
-                    The request object. The request for
-                [UpdateInstance][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstance].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseUpdateInstance._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_update_instance(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseUpdateInstance._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseUpdateInstance._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseUpdateInstance._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.UpdateInstance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "UpdateInstance",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._UpdateInstance._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_update_instance(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_update_instance_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.update_instance",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "UpdateInstance",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _UpdateInstanceConfig(
-        _BaseInstanceAdminRestTransport._BaseUpdateInstanceConfig, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.UpdateInstanceConfig")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.UpdateInstanceConfigRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the update instance config method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.UpdateInstanceConfigRequest):
-                    The request object. The request for
-                [UpdateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstanceConfig].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseUpdateInstanceConfig._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_update_instance_config(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseUpdateInstanceConfig._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseUpdateInstanceConfig._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseUpdateInstanceConfig._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.UpdateInstanceConfig",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "UpdateInstanceConfig",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._UpdateInstanceConfig._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_update_instance_config(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_update_instance_config_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.update_instance_config",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "UpdateInstanceConfig",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _UpdateInstancePartition(
-        _BaseInstanceAdminRestTransport._BaseUpdateInstancePartition,
-        InstanceAdminRestStub,
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.UpdateInstancePartition")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner_instance_admin.UpdateInstancePartitionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the update instance partition method over HTTP.
-
-            Args:
-                request (~.spanner_instance_admin.UpdateInstancePartitionRequest):
-                    The request object. The request for
-                [UpdateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstancePartition].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.operations_pb2.Operation:
-                    This resource represents a
-                long-running operation that is the
-                result of a network API call.
-
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseUpdateInstancePartition._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_update_instance_partition(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseUpdateInstancePartition._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseInstanceAdminRestTransport._BaseUpdateInstancePartition._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseUpdateInstancePartition._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.UpdateInstancePartition",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "UpdateInstancePartition",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = (
-                InstanceAdminRestTransport._UpdateInstancePartition._get_response(
-                    self._host,
-                    metadata,
-                    query_params,
-                    self._session,
-                    timeout,
-                    transcoded_request,
-                    body,
-                )
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = operations_pb2.Operation()
-            json_format.Parse(response.content, resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_update_instance_partition(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_update_instance_partition_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminClient.update_instance_partition",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "UpdateInstancePartition",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    @property
-    def create_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CreateInstance(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def create_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstanceConfigRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CreateInstanceConfig(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def create_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.CreateInstancePartitionRequest],
-        operations_pb2.Operation,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CreateInstancePartition(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def delete_instance(
-        self,
-    ) -> Callable[[spanner_instance_admin.DeleteInstanceRequest], empty_pb2.Empty]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._DeleteInstance(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def delete_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstanceConfigRequest], empty_pb2.Empty
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._DeleteInstanceConfig(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def delete_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.DeleteInstancePartitionRequest], empty_pb2.Empty
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._DeleteInstancePartition(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.GetIamPolicyRequest], policy_pb2.Policy]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetIamPolicy(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceRequest], spanner_instance_admin.Instance
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetInstance(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstanceConfigRequest],
-        spanner_instance_admin.InstanceConfig,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetInstanceConfig(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.GetInstancePartitionRequest],
-        spanner_instance_admin.InstancePartition,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetInstancePartition(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_instance_config_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigOperationsRequest],
-        spanner_instance_admin.ListInstanceConfigOperationsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListInstanceConfigOperations(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_instance_configs(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstanceConfigsRequest],
-        spanner_instance_admin.ListInstanceConfigsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListInstanceConfigs(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_instance_partition_operations(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionOperationsRequest],
-        spanner_instance_admin.ListInstancePartitionOperationsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListInstancePartitionOperations(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_instance_partitions(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancePartitionsRequest],
-        spanner_instance_admin.ListInstancePartitionsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListInstancePartitions(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_instances(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.ListInstancesRequest],
-        spanner_instance_admin.ListInstancesResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListInstances(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def move_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.MoveInstanceRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._MoveInstance(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def set_iam_policy(
-        self,
-    ) -> Callable[[iam_policy_pb2.SetIamPolicyRequest], policy_pb2.Policy]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._SetIamPolicy(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def test_iam_permissions(
-        self,
-    ) -> Callable[
-        [iam_policy_pb2.TestIamPermissionsRequest],
-        iam_policy_pb2.TestIamPermissionsResponse,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._TestIamPermissions(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def update_instance(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._UpdateInstance(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def update_instance_config(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstanceConfigRequest], operations_pb2.Operation
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._UpdateInstanceConfig(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def update_instance_partition(
-        self,
-    ) -> Callable[
-        [spanner_instance_admin.UpdateInstancePartitionRequest],
-        operations_pb2.Operation,
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._UpdateInstancePartition(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def cancel_operation(self):
-        return self._CancelOperation(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _CancelOperation(
-        _BaseInstanceAdminRestTransport._BaseCancelOperation, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.CancelOperation")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.CancelOperationRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> None:
-            r"""Call the cancel operation method over HTTP.
-
-            Args:
-                request (operations_pb2.CancelOperationRequest):
-                    The request object for CancelOperation method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseCancelOperation._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_cancel_operation(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseCancelOperation._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseCancelOperation._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.CancelOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "CancelOperation",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._CancelOperation._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            return self._interceptor.post_cancel_operation(None)
-
-    @property
-    def delete_operation(self):
-        return self._DeleteOperation(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _DeleteOperation(
-        _BaseInstanceAdminRestTransport._BaseDeleteOperation, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.DeleteOperation")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.DeleteOperationRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> None:
-            r"""Call the delete operation method over HTTP.
-
-            Args:
-                request (operations_pb2.DeleteOperationRequest):
-                    The request object for DeleteOperation method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseDeleteOperation._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_operation(
-                request, metadata
-            )
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseDeleteOperation._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseDeleteOperation._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.DeleteOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "DeleteOperation",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._DeleteOperation._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            return self._interceptor.post_delete_operation(None)
-
-    @property
-    def get_operation(self):
-        return self._GetOperation(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _GetOperation(
-        _BaseInstanceAdminRestTransport._BaseGetOperation, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.GetOperation")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.GetOperationRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.Operation:
-            r"""Call the get operation method over HTTP.
-
-            Args:
-                request (operations_pb2.GetOperationRequest):
-                    The request object for GetOperation method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                operations_pb2.Operation: Response from GetOperation method.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseGetOperation._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_get_operation(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseGetOperation._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseGetOperation._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.GetOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetOperation",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._GetOperation._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            content = response.content.decode("utf-8")
-            resp = operations_pb2.Operation()
-            resp = json_format.Parse(content, resp)
-            resp = self._interceptor.post_get_operation(resp)
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminAsyncClient.GetOperation",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "GetOperation",
-                        "httpResponse": http_response,
-                        "metadata": http_response["headers"],
-                    },
-                )
-            return resp
-
-    @property
-    def list_operations(self):
-        return self._ListOperations(self._session, self._host, self._interceptor)  # type: ignore
-
-    class _ListOperations(
-        _BaseInstanceAdminRestTransport._BaseListOperations, InstanceAdminRestStub
-    ):
-        def __hash__(self):
-            return hash("InstanceAdminRestTransport.ListOperations")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: operations_pb2.ListOperationsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> operations_pb2.ListOperationsResponse:
-            r"""Call the list operations method over HTTP.
-
-            Args:
-                request (operations_pb2.ListOperationsRequest):
-                    The request object for ListOperations method.
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                operations_pb2.ListOperationsResponse: Response from ListOperations method.
-            """
-
-            http_options = (
-                _BaseInstanceAdminRestTransport._BaseListOperations._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_operations(request, metadata)
-            transcoded_request = _BaseInstanceAdminRestTransport._BaseListOperations._get_transcoded_request(
-                http_options, request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseInstanceAdminRestTransport._BaseListOperations._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner.admin.instance_v1.InstanceAdminClient.ListOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListOperations",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = InstanceAdminRestTransport._ListOperations._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            content = response.content.decode("utf-8")
-            resp = operations_pb2.ListOperationsResponse()
-            resp = json_format.Parse(content, resp)
-            resp = self._interceptor.post_list_operations(resp)
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = json_format.MessageToJson(resp)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner.admin.instance_v1.InstanceAdminAsyncClient.ListOperations",
-                    extra={
-                        "serviceName": "google.spanner.admin.instance.v1.InstanceAdmin",
-                        "rpcName": "ListOperations",
-                        "httpResponse": http_response,
-                        "metadata": http_response["headers"],
-                    },
-                )
-            return resp
-
-    @property
-    def kind(self) -> str:
-        return "rest"
-
-    def close(self):
-        self._session.close()
-
-
-__all__ = ("InstanceAdminRestTransport",)
diff --git a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest_base.py b/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest_base.py
deleted file mode 100644
index 15358ba33f..0000000000
--- a/google/cloud/spanner_admin_instance_v1/services/instance_admin/transports/rest_base.py
+++ /dev/null
@@ -1,1376 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import json  # type: ignore
-import re
-from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple, Union
-
-from google.api_core import gapic_v1, path_template
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import json_format
-
-from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin
-
-from .base import DEFAULT_CLIENT_INFO, InstanceAdminTransport
-
-
-class _BaseInstanceAdminRestTransport(InstanceAdminTransport):
-    """Base REST backend transport for InstanceAdmin.
-
-    Note: This class is not meant to be used directly. Use its sync and
-    async sub-classes instead.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends JSON representations of protocol buffers over HTTP/1.1
-    """
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[Any] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        url_scheme: str = "https",
-        api_audience: Optional[str] = None,
-    ) -> None:
-        """Instantiate the transport.
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[Any]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you are developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-            url_scheme: the protocol scheme for the API endpoint.  Normally
-                "https", but for testing or local servers,
-                "http" can be specified.
-        """
-        # Run the base constructor
-        maybe_url_match = re.match("^(?P<scheme>http(?:s)?://)?(?P<host>.*)$", host)
-        if maybe_url_match is None:
-            raise ValueError(
-                f"Unexpected hostname structure: {host}"
-            )  # pragma: NO COVER
-
-        url_match_items = maybe_url_match.groupdict()
-
-        host = f"{url_scheme}://{host}" if not url_match_items["scheme"] else host
-
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-    class _BaseCreateInstance:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*}/instances",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.CreateInstanceRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseCreateInstance._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCreateInstanceConfig:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*}/instanceConfigs",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.CreateInstanceConfigRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseCreateInstanceConfig._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCreateInstancePartition:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{parent=projects/*/instances/*}/instancePartitions",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.CreateInstancePartitionRequest.pb(
-                request
-            )
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseCreateInstancePartition._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseDeleteInstance:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.DeleteInstanceRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseDeleteInstance._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseDeleteInstanceConfig:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.DeleteInstanceConfigRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseDeleteInstanceConfig._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseDeleteInstancePartition:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.DeleteInstancePartitionRequest.pb(
-                request
-            )
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseDeleteInstancePartition._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetIamPolicy:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*}:getIamPolicy",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = request
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseGetIamPolicy._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetInstance:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.GetInstanceRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseGetInstance._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetInstanceConfig:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.GetInstanceConfigRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseGetInstanceConfig._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetInstancePartition:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.GetInstancePartitionRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseGetInstancePartition._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListInstanceConfigOperations:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*}/instanceConfigOperations",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.ListInstanceConfigOperationsRequest.pb(
-                request
-            )
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseListInstanceConfigOperations._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListInstanceConfigs:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*}/instanceConfigs",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.ListInstanceConfigsRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseListInstanceConfigs._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListInstancePartitionOperations:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*}/instancePartitionOperations",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = (
-                spanner_instance_admin.ListInstancePartitionOperationsRequest.pb(
-                    request
-                )
-            )
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseListInstancePartitionOperations._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListInstancePartitions:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*/instances/*}/instancePartitions",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.ListInstancePartitionsRequest.pb(
-                request
-            )
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseListInstancePartitions._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListInstances:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{parent=projects/*}/instances",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.ListInstancesRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseListInstances._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseMoveInstance:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*}:move",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.MoveInstanceRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseMoveInstance._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseSetIamPolicy:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*}:setIamPolicy",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = request
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseSetIamPolicy._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseTestIamPermissions:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{resource=projects/*/instances/*}:testIamPermissions",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = request
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseTestIamPermissions._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseUpdateInstance:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "patch",
-                    "uri": "/v1/{instance.name=projects/*/instances/*}",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.UpdateInstanceRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseUpdateInstance._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseUpdateInstanceConfig:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "patch",
-                    "uri": "/v1/{instance_config.name=projects/*/instanceConfigs/*}",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.UpdateInstanceConfigRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseUpdateInstanceConfig._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseUpdateInstancePartition:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "patch",
-                    "uri": "/v1/{instance_partition.name=projects/*/instances/*/instancePartitions/*}",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner_instance_admin.UpdateInstancePartitionRequest.pb(
-                request
-            )
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseInstanceAdminRestTransport._BaseUpdateInstancePartition._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCancelOperation:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}:cancel",
-                },
-                {
-                    "method": "post",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations/*}:cancel",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-    class _BaseDeleteOperation:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                },
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-    class _BaseGetOperation:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations/*}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-    class _BaseListOperations:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/backups/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/instancePartitions/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/operations}",
-                },
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instanceConfigs/*/ssdCaches/*/operations}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            request_kwargs = json_format.MessageToDict(request)
-            transcoded_request = path_template.transcode(http_options, **request_kwargs)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(json.dumps(transcoded_request["query_params"]))
-            return query_params
-
-
-__all__ = ("_BaseInstanceAdminRestTransport",)
diff --git a/google/cloud/spanner_admin_instance_v1/types/__init__.py b/google/cloud/spanner_admin_instance_v1/types/__init__.py
deleted file mode 100644
index aa3f520a98..0000000000
--- a/google/cloud/spanner_admin_instance_v1/types/__init__.py
+++ /dev/null
@@ -1,100 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from .common import FulfillmentPeriod, OperationProgress, ReplicaSelection
-from .spanner_instance_admin import (
-    AutoscalingConfig,
-    CreateInstanceConfigMetadata,
-    CreateInstanceConfigRequest,
-    CreateInstanceMetadata,
-    CreateInstancePartitionMetadata,
-    CreateInstancePartitionRequest,
-    CreateInstanceRequest,
-    DeleteInstanceConfigRequest,
-    DeleteInstancePartitionRequest,
-    DeleteInstanceRequest,
-    FreeInstanceMetadata,
-    GetInstanceConfigRequest,
-    GetInstancePartitionRequest,
-    GetInstanceRequest,
-    Instance,
-    InstanceConfig,
-    InstancePartition,
-    ListInstanceConfigOperationsRequest,
-    ListInstanceConfigOperationsResponse,
-    ListInstanceConfigsRequest,
-    ListInstanceConfigsResponse,
-    ListInstancePartitionOperationsRequest,
-    ListInstancePartitionOperationsResponse,
-    ListInstancePartitionsRequest,
-    ListInstancePartitionsResponse,
-    ListInstancesRequest,
-    ListInstancesResponse,
-    MoveInstanceMetadata,
-    MoveInstanceRequest,
-    MoveInstanceResponse,
-    ReplicaComputeCapacity,
-    ReplicaInfo,
-    UpdateInstanceConfigMetadata,
-    UpdateInstanceConfigRequest,
-    UpdateInstanceMetadata,
-    UpdateInstancePartitionMetadata,
-    UpdateInstancePartitionRequest,
-    UpdateInstanceRequest,
-)
-
-__all__ = (
-    "OperationProgress",
-    "ReplicaSelection",
-    "FulfillmentPeriod",
-    "AutoscalingConfig",
-    "CreateInstanceConfigMetadata",
-    "CreateInstanceConfigRequest",
-    "CreateInstanceMetadata",
-    "CreateInstancePartitionMetadata",
-    "CreateInstancePartitionRequest",
-    "CreateInstanceRequest",
-    "DeleteInstanceConfigRequest",
-    "DeleteInstancePartitionRequest",
-    "DeleteInstanceRequest",
-    "FreeInstanceMetadata",
-    "GetInstanceConfigRequest",
-    "GetInstancePartitionRequest",
-    "GetInstanceRequest",
-    "Instance",
-    "InstanceConfig",
-    "InstancePartition",
-    "ListInstanceConfigOperationsRequest",
-    "ListInstanceConfigOperationsResponse",
-    "ListInstanceConfigsRequest",
-    "ListInstanceConfigsResponse",
-    "ListInstancePartitionOperationsRequest",
-    "ListInstancePartitionOperationsResponse",
-    "ListInstancePartitionsRequest",
-    "ListInstancePartitionsResponse",
-    "ListInstancesRequest",
-    "ListInstancesResponse",
-    "MoveInstanceMetadata",
-    "MoveInstanceRequest",
-    "MoveInstanceResponse",
-    "ReplicaComputeCapacity",
-    "ReplicaInfo",
-    "UpdateInstanceConfigMetadata",
-    "UpdateInstanceConfigRequest",
-    "UpdateInstanceMetadata",
-    "UpdateInstancePartitionMetadata",
-    "UpdateInstancePartitionRequest",
-    "UpdateInstanceRequest",
-)
diff --git a/google/cloud/spanner_admin_instance_v1/types/common.py b/google/cloud/spanner_admin_instance_v1/types/common.py
deleted file mode 100644
index eb52bbb769..0000000000
--- a/google/cloud/spanner_admin_instance_v1/types/common.py
+++ /dev/null
@@ -1,97 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-__protobuf__ = proto.module(
-    package="google.spanner.admin.instance.v1",
-    manifest={
-        "FulfillmentPeriod",
-        "OperationProgress",
-        "ReplicaSelection",
-    },
-)
-
-
-class FulfillmentPeriod(proto.Enum):
-    r"""Indicates the expected fulfillment period of an operation.
-
-    Values:
-        FULFILLMENT_PERIOD_UNSPECIFIED (0):
-            Not specified.
-        FULFILLMENT_PERIOD_NORMAL (1):
-            Normal fulfillment period. The operation is
-            expected to complete within minutes.
-        FULFILLMENT_PERIOD_EXTENDED (2):
-            Extended fulfillment period. It can take up
-            to an hour for the operation to complete.
-    """
-    FULFILLMENT_PERIOD_UNSPECIFIED = 0
-    FULFILLMENT_PERIOD_NORMAL = 1
-    FULFILLMENT_PERIOD_EXTENDED = 2
-
-
-class OperationProgress(proto.Message):
-    r"""Encapsulates progress related information for a Cloud Spanner
-    long running instance operations.
-
-    Attributes:
-        progress_percent (int):
-            Percent completion of the operation.
-            Values are between 0 and 100 inclusive.
-        start_time (google.protobuf.timestamp_pb2.Timestamp):
-            Time the request was received.
-        end_time (google.protobuf.timestamp_pb2.Timestamp):
-            If set, the time at which this operation
-            failed or was completed successfully.
-    """
-
-    progress_percent: int = proto.Field(
-        proto.INT32,
-        number=1,
-    )
-    start_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    end_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class ReplicaSelection(proto.Message):
-    r"""ReplicaSelection identifies replicas with common properties.
-
-    Attributes:
-        location (str):
-            Required. Name of the location of the
-            replicas (e.g., "us-central1").
-    """
-
-    location: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_admin_instance_v1/types/spanner_instance_admin.py b/google/cloud/spanner_admin_instance_v1/types/spanner_instance_admin.py
deleted file mode 100644
index 1df4301475..0000000000
--- a/google/cloud/spanner_admin_instance_v1/types/spanner_instance_admin.py
+++ /dev/null
@@ -1,2466 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.longrunning import operations_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1.types import common
-
-__protobuf__ = proto.module(
-    package="google.spanner.admin.instance.v1",
-    manifest={
-        "ReplicaInfo",
-        "InstanceConfig",
-        "ReplicaComputeCapacity",
-        "AutoscalingConfig",
-        "Instance",
-        "ListInstanceConfigsRequest",
-        "ListInstanceConfigsResponse",
-        "GetInstanceConfigRequest",
-        "CreateInstanceConfigRequest",
-        "UpdateInstanceConfigRequest",
-        "DeleteInstanceConfigRequest",
-        "ListInstanceConfigOperationsRequest",
-        "ListInstanceConfigOperationsResponse",
-        "GetInstanceRequest",
-        "CreateInstanceRequest",
-        "ListInstancesRequest",
-        "ListInstancesResponse",
-        "UpdateInstanceRequest",
-        "DeleteInstanceRequest",
-        "CreateInstanceMetadata",
-        "UpdateInstanceMetadata",
-        "FreeInstanceMetadata",
-        "CreateInstanceConfigMetadata",
-        "UpdateInstanceConfigMetadata",
-        "InstancePartition",
-        "CreateInstancePartitionMetadata",
-        "CreateInstancePartitionRequest",
-        "DeleteInstancePartitionRequest",
-        "GetInstancePartitionRequest",
-        "UpdateInstancePartitionRequest",
-        "UpdateInstancePartitionMetadata",
-        "ListInstancePartitionsRequest",
-        "ListInstancePartitionsResponse",
-        "ListInstancePartitionOperationsRequest",
-        "ListInstancePartitionOperationsResponse",
-        "MoveInstanceRequest",
-        "MoveInstanceResponse",
-        "MoveInstanceMetadata",
-    },
-)
-
-
-class ReplicaInfo(proto.Message):
-    r"""
-
-    Attributes:
-        location (str):
-            The location of the serving resources, e.g.,
-            "us-central1".
-        type_ (google.cloud.spanner_admin_instance_v1.types.ReplicaInfo.ReplicaType):
-            The type of replica.
-        default_leader_location (bool):
-            If true, this location is designated as the default leader
-            location where leader replicas are placed. See the `region
-            types
-            documentation <https://cloud.google.com/spanner/docs/instances#region_types>`__
-            for more details.
-    """
-
-    class ReplicaType(proto.Enum):
-        r"""Indicates the type of replica. See the `replica types
-        documentation <https://cloud.google.com/spanner/docs/replication#replica_types>`__
-        for more details.
-
-        Values:
-            TYPE_UNSPECIFIED (0):
-                Not specified.
-            READ_WRITE (1):
-                Read-write replicas support both reads and writes. These
-                replicas:
-
-                - Maintain a full copy of your data.
-                - Serve reads.
-                - Can vote whether to commit a write.
-                - Participate in leadership election.
-                - Are eligible to become a leader.
-            READ_ONLY (2):
-                Read-only replicas only support reads (not writes).
-                Read-only replicas:
-
-                - Maintain a full copy of your data.
-                - Serve reads.
-                - Do not participate in voting to commit writes.
-                - Are not eligible to become a leader.
-            WITNESS (3):
-                Witness replicas don't support reads but do participate in
-                voting to commit writes. Witness replicas:
-
-                - Do not maintain a full copy of data.
-                - Do not serve reads.
-                - Vote whether to commit writes.
-                - Participate in leader election but are not eligible to
-                  become leader.
-        """
-        TYPE_UNSPECIFIED = 0
-        READ_WRITE = 1
-        READ_ONLY = 2
-        WITNESS = 3
-
-    location: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    type_: ReplicaType = proto.Field(
-        proto.ENUM,
-        number=2,
-        enum=ReplicaType,
-    )
-    default_leader_location: bool = proto.Field(
-        proto.BOOL,
-        number=3,
-    )
-
-
-class InstanceConfig(proto.Message):
-    r"""A possible configuration for a Cloud Spanner instance.
-    Configurations define the geographic placement of nodes and
-    their replication.
-
-    Attributes:
-        name (str):
-            A unique identifier for the instance configuration. Values
-            are of the form
-            ``projects/<project>/instanceConfigs/[a-z][-a-z0-9]*``.
-
-            User instance configuration must start with ``custom-``.
-        display_name (str):
-            The name of this instance configuration as it
-            appears in UIs.
-        config_type (google.cloud.spanner_admin_instance_v1.types.InstanceConfig.Type):
-            Output only. Whether this instance
-            configuration is a Google-managed or
-            user-managed configuration.
-        replicas (MutableSequence[google.cloud.spanner_admin_instance_v1.types.ReplicaInfo]):
-            The geographic placement of nodes in this instance
-            configuration and their replication properties.
-
-            To create user-managed configurations, input ``replicas``
-            must include all replicas in ``replicas`` of the
-            ``base_config`` and include one or more replicas in the
-            ``optional_replicas`` of the ``base_config``.
-        optional_replicas (MutableSequence[google.cloud.spanner_admin_instance_v1.types.ReplicaInfo]):
-            Output only. The available optional replicas
-            to choose from for user-managed configurations.
-            Populated for Google-managed configurations.
-        base_config (str):
-            Base configuration name, e.g.
-            projects/<project_name>/instanceConfigs/nam3, based on which
-            this configuration is created. Only set for user-managed
-            configurations. ``base_config`` must refer to a
-            configuration of type ``GOOGLE_MANAGED`` in the same project
-            as this configuration.
-        labels (MutableMapping[str, str]):
-            Cloud Labels are a flexible and lightweight mechanism for
-            organizing cloud resources into groups that reflect a
-            customer's organizational needs and deployment strategies.
-            Cloud Labels can be used to filter collections of resources.
-            They can be used to control how resource metrics are
-            aggregated. And they can be used as arguments to policy
-            management rules (e.g. route, firewall, load balancing,
-            etc.).
-
-            - Label keys must be between 1 and 63 characters long and
-              must conform to the following regular expression:
-              ``[a-z][a-z0-9_-]{0,62}``.
-            - Label values must be between 0 and 63 characters long and
-              must conform to the regular expression
-              ``[a-z0-9_-]{0,63}``.
-            - No more than 64 labels can be associated with a given
-              resource.
-
-            See https://goo.gl/xmQnxf for more information on and
-            examples of labels.
-
-            If you plan to use labels in your own code, please note that
-            additional characters may be allowed in the future.
-            Therefore, you are advised to use an internal label
-            representation, such as JSON, which doesn't rely upon
-            specific characters being disallowed. For example,
-            representing labels as the string: name + "*" + value would
-            prove problematic if we were to allow "*" in a future
-            release.
-        etag (str):
-            etag is used for optimistic concurrency
-            control as a way to help prevent simultaneous
-            updates of a instance configuration from
-            overwriting each other. It is strongly suggested
-            that systems make use of the etag in the
-            read-modify-write cycle to perform instance
-            configuration updates in order to avoid race
-            conditions: An etag is returned in the response
-            which contains instance configurations, and
-            systems are expected to put that etag in the
-            request to update instance configuration to
-            ensure that their change is applied to the same
-            version of the instance configuration. If no
-            etag is provided in the call to update the
-            instance configuration, then the existing
-            instance configuration is overwritten blindly.
-        leader_options (MutableSequence[str]):
-            Allowed values of the "default_leader" schema option for
-            databases in instances that use this instance configuration.
-        reconciling (bool):
-            Output only. If true, the instance
-            configuration is being created or updated. If
-            false, there are no ongoing operations for the
-            instance configuration.
-        state (google.cloud.spanner_admin_instance_v1.types.InstanceConfig.State):
-            Output only. The current instance configuration state.
-            Applicable only for ``USER_MANAGED`` configurations.
-        free_instance_availability (google.cloud.spanner_admin_instance_v1.types.InstanceConfig.FreeInstanceAvailability):
-            Output only. Describes whether free instances
-            are available to be created in this instance
-            configuration.
-        quorum_type (google.cloud.spanner_admin_instance_v1.types.InstanceConfig.QuorumType):
-            Output only. The ``QuorumType`` of the instance
-            configuration.
-        storage_limit_per_processing_unit (int):
-            Output only. The storage limit in bytes per
-            processing unit.
-    """
-
-    class Type(proto.Enum):
-        r"""The type of this configuration.
-
-        Values:
-            TYPE_UNSPECIFIED (0):
-                Unspecified.
-            GOOGLE_MANAGED (1):
-                Google-managed configuration.
-            USER_MANAGED (2):
-                User-managed configuration.
-        """
-        TYPE_UNSPECIFIED = 0
-        GOOGLE_MANAGED = 1
-        USER_MANAGED = 2
-
-    class State(proto.Enum):
-        r"""Indicates the current state of the instance configuration.
-
-        Values:
-            STATE_UNSPECIFIED (0):
-                Not specified.
-            CREATING (1):
-                The instance configuration is still being
-                created.
-            READY (2):
-                The instance configuration is fully created
-                and ready to be used to create instances.
-        """
-        STATE_UNSPECIFIED = 0
-        CREATING = 1
-        READY = 2
-
-    class FreeInstanceAvailability(proto.Enum):
-        r"""Describes the availability for free instances to be created
-        in an instance configuration.
-
-        Values:
-            FREE_INSTANCE_AVAILABILITY_UNSPECIFIED (0):
-                Not specified.
-            AVAILABLE (1):
-                Indicates that free instances are available
-                to be created in this instance configuration.
-            UNSUPPORTED (2):
-                Indicates that free instances are not
-                supported in this instance configuration.
-            DISABLED (3):
-                Indicates that free instances are currently
-                not available to be created in this instance
-                configuration.
-            QUOTA_EXCEEDED (4):
-                Indicates that additional free instances
-                cannot be created in this instance configuration
-                because the project has reached its limit of
-                free instances.
-        """
-        FREE_INSTANCE_AVAILABILITY_UNSPECIFIED = 0
-        AVAILABLE = 1
-        UNSUPPORTED = 2
-        DISABLED = 3
-        QUOTA_EXCEEDED = 4
-
-    class QuorumType(proto.Enum):
-        r"""Indicates the quorum type of this instance configuration.
-
-        Values:
-            QUORUM_TYPE_UNSPECIFIED (0):
-                Quorum type not specified.
-            REGION (1):
-                An instance configuration tagged with ``REGION`` quorum type
-                forms a write quorum in a single region.
-            DUAL_REGION (2):
-                An instance configuration tagged with the ``DUAL_REGION``
-                quorum type forms a write quorum with exactly two read-write
-                regions in a multi-region configuration.
-
-                This instance configuration requires failover in the event
-                of regional failures.
-            MULTI_REGION (3):
-                An instance configuration tagged with the ``MULTI_REGION``
-                quorum type forms a write quorum from replicas that are
-                spread across more than one region in a multi-region
-                configuration.
-        """
-        QUORUM_TYPE_UNSPECIFIED = 0
-        REGION = 1
-        DUAL_REGION = 2
-        MULTI_REGION = 3
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    display_name: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    config_type: Type = proto.Field(
-        proto.ENUM,
-        number=5,
-        enum=Type,
-    )
-    replicas: MutableSequence["ReplicaInfo"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=3,
-        message="ReplicaInfo",
-    )
-    optional_replicas: MutableSequence["ReplicaInfo"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=6,
-        message="ReplicaInfo",
-    )
-    base_config: str = proto.Field(
-        proto.STRING,
-        number=7,
-    )
-    labels: MutableMapping[str, str] = proto.MapField(
-        proto.STRING,
-        proto.STRING,
-        number=8,
-    )
-    etag: str = proto.Field(
-        proto.STRING,
-        number=9,
-    )
-    leader_options: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=4,
-    )
-    reconciling: bool = proto.Field(
-        proto.BOOL,
-        number=10,
-    )
-    state: State = proto.Field(
-        proto.ENUM,
-        number=11,
-        enum=State,
-    )
-    free_instance_availability: FreeInstanceAvailability = proto.Field(
-        proto.ENUM,
-        number=12,
-        enum=FreeInstanceAvailability,
-    )
-    quorum_type: QuorumType = proto.Field(
-        proto.ENUM,
-        number=18,
-        enum=QuorumType,
-    )
-    storage_limit_per_processing_unit: int = proto.Field(
-        proto.INT64,
-        number=19,
-    )
-
-
-class ReplicaComputeCapacity(proto.Message):
-    r"""ReplicaComputeCapacity describes the amount of server
-    resources that are allocated to each replica identified by the
-    replica selection.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        replica_selection (google.cloud.spanner_admin_instance_v1.types.ReplicaSelection):
-            Required. Identifies replicas by specified
-            properties. All replicas in the selection have
-            the same amount of compute capacity.
-        node_count (int):
-            The number of nodes allocated to each replica.
-
-            This may be zero in API responses for instances that are not
-            yet in state ``READY``.
-
-            This field is a member of `oneof`_ ``compute_capacity``.
-        processing_units (int):
-            The number of processing units allocated to each replica.
-
-            This may be zero in API responses for instances that are not
-            yet in state ``READY``.
-
-            This field is a member of `oneof`_ ``compute_capacity``.
-    """
-
-    replica_selection: common.ReplicaSelection = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message=common.ReplicaSelection,
-    )
-    node_count: int = proto.Field(
-        proto.INT32,
-        number=2,
-        oneof="compute_capacity",
-    )
-    processing_units: int = proto.Field(
-        proto.INT32,
-        number=3,
-        oneof="compute_capacity",
-    )
-
-
-class AutoscalingConfig(proto.Message):
-    r"""Autoscaling configuration for an instance.
-
-    Attributes:
-        autoscaling_limits (google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig.AutoscalingLimits):
-            Required. Autoscaling limits for an instance.
-        autoscaling_targets (google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig.AutoscalingTargets):
-            Required. The autoscaling targets for an
-            instance.
-        asymmetric_autoscaling_options (MutableSequence[google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig.AsymmetricAutoscalingOption]):
-            Optional. Optional asymmetric autoscaling
-            options. Replicas matching the replica selection
-            criteria will be autoscaled independently from
-            other replicas. The autoscaler will scale the
-            replicas based on the utilization of replicas
-            identified by the replica selection. Replica
-            selections should not overlap with each other.
-
-            Other replicas (those do not match any replica
-            selection) will be autoscaled together and will
-            have the same compute capacity allocated to
-            them.
-    """
-
-    class AutoscalingLimits(proto.Message):
-        r"""The autoscaling limits for the instance. Users can define the
-        minimum and maximum compute capacity allocated to the instance, and
-        the autoscaler will only scale within that range. Users can either
-        use nodes or processing units to specify the limits, but should use
-        the same unit to set both the min_limit and max_limit.
-
-        This message has `oneof`_ fields (mutually exclusive fields).
-        For each oneof, at most one member field can be set at the same time.
-        Setting any member of the oneof automatically clears all other
-        members.
-
-        .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-        Attributes:
-            min_nodes (int):
-                Minimum number of nodes allocated to the
-                instance. If set, this number should be greater
-                than or equal to 1.
-
-                This field is a member of `oneof`_ ``min_limit``.
-            min_processing_units (int):
-                Minimum number of processing units allocated
-                to the instance. If set, this number should be
-                multiples of 1000.
-
-                This field is a member of `oneof`_ ``min_limit``.
-            max_nodes (int):
-                Maximum number of nodes allocated to the instance. If set,
-                this number should be greater than or equal to min_nodes.
-
-                This field is a member of `oneof`_ ``max_limit``.
-            max_processing_units (int):
-                Maximum number of processing units allocated to the
-                instance. If set, this number should be multiples of 1000
-                and be greater than or equal to min_processing_units.
-
-                This field is a member of `oneof`_ ``max_limit``.
-        """
-
-        min_nodes: int = proto.Field(
-            proto.INT32,
-            number=1,
-            oneof="min_limit",
-        )
-        min_processing_units: int = proto.Field(
-            proto.INT32,
-            number=2,
-            oneof="min_limit",
-        )
-        max_nodes: int = proto.Field(
-            proto.INT32,
-            number=3,
-            oneof="max_limit",
-        )
-        max_processing_units: int = proto.Field(
-            proto.INT32,
-            number=4,
-            oneof="max_limit",
-        )
-
-    class AutoscalingTargets(proto.Message):
-        r"""The autoscaling targets for an instance.
-
-        Attributes:
-            high_priority_cpu_utilization_percent (int):
-                Optional. The target high priority cpu utilization
-                percentage that the autoscaler should be trying to achieve
-                for the instance. This number is on a scale from 0 (no
-                utilization) to 100 (full utilization). The valid range is
-                [10, 90] inclusive. If not specified or set to 0, the
-                autoscaler skips scaling based on high priority CPU
-                utilization.
-            total_cpu_utilization_percent (int):
-                Optional. The target total CPU utilization percentage that
-                the autoscaler should be trying to achieve for the instance.
-                This number is on a scale from 0 (no utilization) to 100
-                (full utilization). The valid range is [10, 90] inclusive.
-                If not specified or set to 0, the autoscaler skips scaling
-                based on total CPU utilization. If both
-                ``high_priority_cpu_utilization_percent`` and
-                ``total_cpu_utilization_percent`` are specified, the
-                autoscaler provisions the larger of the two required compute
-                capacities to satisfy both targets.
-            storage_utilization_percent (int):
-                Required. The target storage utilization percentage that the
-                autoscaler should be trying to achieve for the instance.
-                This number is on a scale from 0 (no utilization) to 100
-                (full utilization). The valid range is [10, 99] inclusive.
-        """
-
-        high_priority_cpu_utilization_percent: int = proto.Field(
-            proto.INT32,
-            number=1,
-        )
-        total_cpu_utilization_percent: int = proto.Field(
-            proto.INT32,
-            number=4,
-        )
-        storage_utilization_percent: int = proto.Field(
-            proto.INT32,
-            number=2,
-        )
-
-    class AsymmetricAutoscalingOption(proto.Message):
-        r"""AsymmetricAutoscalingOption specifies the scaling of replicas
-        identified by the given selection.
-
-        Attributes:
-            replica_selection (google.cloud.spanner_admin_instance_v1.types.ReplicaSelection):
-                Required. Selects the replicas to which this
-                AsymmetricAutoscalingOption applies. Only
-                read-only replicas are supported.
-            overrides (google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides):
-                Optional. Overrides applied to the top-level
-                autoscaling configuration for the selected
-                replicas.
-        """
-
-        class AutoscalingConfigOverrides(proto.Message):
-            r"""Overrides the top-level autoscaling configuration for the replicas
-            identified by ``replica_selection``. All fields in this message are
-            optional. Any unspecified fields will use the corresponding values
-            from the top-level autoscaling configuration.
-
-            Attributes:
-                autoscaling_limits (google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig.AutoscalingLimits):
-                    Optional. If specified, overrides the min/max
-                    limit in the top-level autoscaling configuration
-                    for the selected replicas.
-                autoscaling_target_high_priority_cpu_utilization_percent (int):
-                    Optional. If specified, overrides the autoscaling target
-                    high_priority_cpu_utilization_percent in the top-level
-                    autoscaling configuration for the selected replicas.
-                autoscaling_target_total_cpu_utilization_percent (int):
-                    Optional. If specified, overrides the autoscaling target
-                    ``total_cpu_utilization_percent`` in the top-level
-                    autoscaling configuration for the selected replicas.
-                disable_high_priority_cpu_autoscaling (bool):
-                    Optional. If true, disables high priority CPU autoscaling
-                    for the selected replicas and ignores
-                    [high_priority_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.high_priority_cpu_utilization_percent]
-                    in the top-level autoscaling configuration.
-
-                    When setting this field to true, setting
-                    [autoscaling_target_high_priority_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.autoscaling_target_high_priority_cpu_utilization_percent]
-                    field to a non-zero value for the same replica is not
-                    supported.
-
-                    If false, the
-                    [autoscaling_target_high_priority_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.autoscaling_target_high_priority_cpu_utilization_percent]
-                    field in the replica will be used if set to a non-zero
-                    value. Otherwise, the
-                    [high_priority_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.high_priority_cpu_utilization_percent]
-                    field in the top-level autoscaling configuration will be
-                    used.
-
-                    Setting both
-                    [disable_high_priority_cpu_autoscaling][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.disable_high_priority_cpu_autoscaling]
-                    and
-                    [disable_total_cpu_autoscaling][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.disable_total_cpu_autoscaling]
-                    to true for the same replica is not supported.
-                disable_total_cpu_autoscaling (bool):
-                    Optional. If true, disables total CPU autoscaling for the
-                    selected replicas and ignores
-                    [total_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.total_cpu_utilization_percent]
-                    in the top-level autoscaling configuration.
-
-                    When setting this field to true, setting
-                    [autoscaling_target_total_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.autoscaling_target_total_cpu_utilization_percent]
-                    field to a non-zero value for the same replica is not
-                    supported.
-
-                    If false, the
-                    [autoscaling_target_total_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.autoscaling_target_total_cpu_utilization_percent]
-                    field in the replica will be used if set to a non-zero
-                    value. Otherwise, the
-                    [total_cpu_utilization_percent][google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.total_cpu_utilization_percent]
-                    field in the top-level autoscaling configuration will be
-                    used.
-
-                    Setting both
-                    [disable_high_priority_cpu_autoscaling][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.disable_high_priority_cpu_autoscaling]
-                    and
-                    [disable_total_cpu_autoscaling][google.spanner.admin.instance.v1.AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides.disable_total_cpu_autoscaling]
-                    to true for the same replica is not supported.
-            """
-
-            autoscaling_limits: "AutoscalingConfig.AutoscalingLimits" = proto.Field(
-                proto.MESSAGE,
-                number=1,
-                message="AutoscalingConfig.AutoscalingLimits",
-            )
-            autoscaling_target_high_priority_cpu_utilization_percent: int = proto.Field(
-                proto.INT32,
-                number=2,
-            )
-            autoscaling_target_total_cpu_utilization_percent: int = proto.Field(
-                proto.INT32,
-                number=4,
-            )
-            disable_high_priority_cpu_autoscaling: bool = proto.Field(
-                proto.BOOL,
-                number=5,
-            )
-            disable_total_cpu_autoscaling: bool = proto.Field(
-                proto.BOOL,
-                number=6,
-            )
-
-        replica_selection: common.ReplicaSelection = proto.Field(
-            proto.MESSAGE,
-            number=1,
-            message=common.ReplicaSelection,
-        )
-        overrides: "AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides" = proto.Field(
-            proto.MESSAGE,
-            number=2,
-            message="AutoscalingConfig.AsymmetricAutoscalingOption.AutoscalingConfigOverrides",
-        )
-
-    autoscaling_limits: AutoscalingLimits = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message=AutoscalingLimits,
-    )
-    autoscaling_targets: AutoscalingTargets = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=AutoscalingTargets,
-    )
-    asymmetric_autoscaling_options: MutableSequence[
-        AsymmetricAutoscalingOption
-    ] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=3,
-        message=AsymmetricAutoscalingOption,
-    )
-
-
-class Instance(proto.Message):
-    r"""An isolated set of Cloud Spanner resources on which databases
-    can be hosted.
-
-    Attributes:
-        name (str):
-            Required. A unique identifier for the instance, which cannot
-            be changed after the instance is created. Values are of the
-            form
-            ``projects/<project>/instances/[a-z][-a-z0-9]*[a-z0-9]``.
-            The final segment of the name must be between 2 and 64
-            characters in length.
-        config (str):
-            Required. The name of the instance's configuration. Values
-            are of the form
-            ``projects/<project>/instanceConfigs/<configuration>``. See
-            also
-            [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-            and
-            [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-        display_name (str):
-            Required. The descriptive name for this
-            instance as it appears in UIs. Must be unique
-            per project and between 4 and 30 characters in
-            length.
-        node_count (int):
-            The number of nodes allocated to this instance. At most, one
-            of either ``node_count`` or ``processing_units`` should be
-            present in the message.
-
-            Users can set the ``node_count`` field to specify the target
-            number of nodes allocated to the instance.
-
-            If autoscaling is enabled, ``node_count`` is treated as an
-            ``OUTPUT_ONLY`` field and reflects the current number of
-            nodes allocated to the instance.
-
-            This might be zero in API responses for instances that are
-            not yet in the ``READY`` state.
-
-            For more information, see `Compute capacity, nodes, and
-            processing
-            units <https://cloud.google.com/spanner/docs/compute-capacity>`__.
-        processing_units (int):
-            The number of processing units allocated to this instance.
-            At most, one of either ``processing_units`` or
-            ``node_count`` should be present in the message.
-
-            Users can set the ``processing_units`` field to specify the
-            target number of processing units allocated to the instance.
-
-            If autoscaling is enabled, ``processing_units`` is treated
-            as an ``OUTPUT_ONLY`` field and reflects the current number
-            of processing units allocated to the instance.
-
-            This might be zero in API responses for instances that are
-            not yet in the ``READY`` state.
-
-            For more information, see `Compute capacity, nodes and
-            processing
-            units <https://cloud.google.com/spanner/docs/compute-capacity>`__.
-        replica_compute_capacity (MutableSequence[google.cloud.spanner_admin_instance_v1.types.ReplicaComputeCapacity]):
-            Output only. Lists the compute capacity per
-            ReplicaSelection. A replica selection identifies
-            a set of replicas with common properties.
-            Replicas identified by a ReplicaSelection are
-            scaled with the same compute capacity.
-        autoscaling_config (google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig):
-            Optional. The autoscaling configuration. Autoscaling is
-            enabled if this field is set. When autoscaling is enabled,
-            node_count and processing_units are treated as OUTPUT_ONLY
-            fields and reflect the current compute capacity allocated to
-            the instance.
-        state (google.cloud.spanner_admin_instance_v1.types.Instance.State):
-            Output only. The current instance state. For
-            [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance],
-            the state must be either omitted or set to ``CREATING``. For
-            [UpdateInstance][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstance],
-            the state must be either omitted or set to ``READY``.
-        labels (MutableMapping[str, str]):
-            Cloud Labels are a flexible and lightweight mechanism for
-            organizing cloud resources into groups that reflect a
-            customer's organizational needs and deployment strategies.
-            Cloud Labels can be used to filter collections of resources.
-            They can be used to control how resource metrics are
-            aggregated. And they can be used as arguments to policy
-            management rules (e.g. route, firewall, load balancing,
-            etc.).
-
-            - Label keys must be between 1 and 63 characters long and
-              must conform to the following regular expression:
-              ``[a-z][a-z0-9_-]{0,62}``.
-            - Label values must be between 0 and 63 characters long and
-              must conform to the regular expression
-              ``[a-z0-9_-]{0,63}``.
-            - No more than 64 labels can be associated with a given
-              resource.
-
-            See https://goo.gl/xmQnxf for more information on and
-            examples of labels.
-
-            If you plan to use labels in your own code, please note that
-            additional characters may be allowed in the future. And so
-            you are advised to use an internal label representation,
-            such as JSON, which doesn't rely upon specific characters
-            being disallowed. For example, representing labels as the
-            string: name + "*" + value would prove problematic if we
-            were to allow "*" in a future release.
-        instance_type (google.cloud.spanner_admin_instance_v1.types.Instance.InstanceType):
-            The ``InstanceType`` of the current instance.
-        endpoint_uris (MutableSequence[str]):
-            Deprecated. This field is not populated.
-        create_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The time at which the instance
-            was created.
-        update_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The time at which the instance
-            was most recently updated.
-        free_instance_metadata (google.cloud.spanner_admin_instance_v1.types.FreeInstanceMetadata):
-            Free instance metadata. Only populated for
-            free instances.
-        edition (google.cloud.spanner_admin_instance_v1.types.Instance.Edition):
-            Optional. The ``Edition`` of the current instance.
-        default_backup_schedule_type (google.cloud.spanner_admin_instance_v1.types.Instance.DefaultBackupScheduleType):
-            Optional. Controls the default backup schedule behavior for
-            new databases within the instance. By default, a backup
-            schedule is created automatically when a new database is
-            created in a new instance.
-
-            Note that the ``AUTOMATIC`` value isn't permitted for free
-            instances, as backups and backup schedules aren't supported
-            for free instances.
-
-            In the ``GetInstance`` or ``ListInstances`` response, if the
-            value of ``default_backup_schedule_type`` isn't set, or set
-            to ``NONE``, Spanner doesn't create a default backup
-            schedule for new databases in the instance.
-    """
-
-    class State(proto.Enum):
-        r"""Indicates the current state of the instance.
-
-        Values:
-            STATE_UNSPECIFIED (0):
-                Not specified.
-            CREATING (1):
-                The instance is still being created.
-                Resources may not be available yet, and
-                operations such as database creation may not
-                work.
-            READY (2):
-                The instance is fully created and ready to do
-                work such as creating databases.
-        """
-        STATE_UNSPECIFIED = 0
-        CREATING = 1
-        READY = 2
-
-    class InstanceType(proto.Enum):
-        r"""The type of this instance. The type can be used to distinguish
-        product variants, that can affect aspects like: usage restrictions,
-        quotas and billing. Currently this is used to distinguish
-        FREE_INSTANCE vs PROVISIONED instances.
-
-        Values:
-            INSTANCE_TYPE_UNSPECIFIED (0):
-                Not specified.
-            PROVISIONED (1):
-                Provisioned instances have dedicated
-                resources, standard usage limits and support.
-            FREE_INSTANCE (2):
-                Free instances provide no guarantee for dedicated resources,
-                [node_count, processing_units] should be 0. They come with
-                stricter usage limits and limited support.
-        """
-        INSTANCE_TYPE_UNSPECIFIED = 0
-        PROVISIONED = 1
-        FREE_INSTANCE = 2
-
-    class Edition(proto.Enum):
-        r"""The edition selected for this instance. Different editions
-        provide different capabilities at different price points.
-
-        Values:
-            EDITION_UNSPECIFIED (0):
-                Edition not specified.
-            STANDARD (1):
-                Standard edition.
-            ENTERPRISE (2):
-                Enterprise edition.
-            ENTERPRISE_PLUS (3):
-                Enterprise Plus edition.
-        """
-        EDITION_UNSPECIFIED = 0
-        STANDARD = 1
-        ENTERPRISE = 2
-        ENTERPRISE_PLUS = 3
-
-    class DefaultBackupScheduleType(proto.Enum):
-        r"""Indicates the `default backup
-        schedule <https://cloud.google.com/spanner/docs/backup#default-backup-schedules>`__
-        behavior for new databases within the instance.
-
-        Values:
-            DEFAULT_BACKUP_SCHEDULE_TYPE_UNSPECIFIED (0):
-                Not specified.
-            NONE (1):
-                A default backup schedule isn't created
-                automatically when a new database is created in
-                the instance.
-            AUTOMATIC (2):
-                A default backup schedule is created
-                automatically when a new database is created in
-                the instance. The default backup schedule
-                creates a full backup every 24 hours. These full
-                backups are retained for 7 days. You can edit or
-                delete the default backup schedule once it's
-                created.
-        """
-        DEFAULT_BACKUP_SCHEDULE_TYPE_UNSPECIFIED = 0
-        NONE = 1
-        AUTOMATIC = 2
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    config: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    display_name: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    node_count: int = proto.Field(
-        proto.INT32,
-        number=5,
-    )
-    processing_units: int = proto.Field(
-        proto.INT32,
-        number=9,
-    )
-    replica_compute_capacity: MutableSequence[
-        "ReplicaComputeCapacity"
-    ] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=19,
-        message="ReplicaComputeCapacity",
-    )
-    autoscaling_config: "AutoscalingConfig" = proto.Field(
-        proto.MESSAGE,
-        number=17,
-        message="AutoscalingConfig",
-    )
-    state: State = proto.Field(
-        proto.ENUM,
-        number=6,
-        enum=State,
-    )
-    labels: MutableMapping[str, str] = proto.MapField(
-        proto.STRING,
-        proto.STRING,
-        number=7,
-    )
-    instance_type: InstanceType = proto.Field(
-        proto.ENUM,
-        number=10,
-        enum=InstanceType,
-    )
-    endpoint_uris: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=8,
-    )
-    create_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=11,
-        message=timestamp_pb2.Timestamp,
-    )
-    update_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=12,
-        message=timestamp_pb2.Timestamp,
-    )
-    free_instance_metadata: "FreeInstanceMetadata" = proto.Field(
-        proto.MESSAGE,
-        number=13,
-        message="FreeInstanceMetadata",
-    )
-    edition: Edition = proto.Field(
-        proto.ENUM,
-        number=20,
-        enum=Edition,
-    )
-    default_backup_schedule_type: DefaultBackupScheduleType = proto.Field(
-        proto.ENUM,
-        number=23,
-        enum=DefaultBackupScheduleType,
-    )
-
-
-class ListInstanceConfigsRequest(proto.Message):
-    r"""The request for
-    [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-
-    Attributes:
-        parent (str):
-            Required. The name of the project for which a list of
-            supported instance configurations is requested. Values are
-            of the form ``projects/<project>``.
-        page_size (int):
-            Number of instance configurations to be
-            returned in the response. If 0 or less, defaults
-            to the server's maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.instance.v1.ListInstanceConfigsResponse.next_page_token]
-            from a previous
-            [ListInstanceConfigsResponse][google.spanner.admin.instance.v1.ListInstanceConfigsResponse].
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=2,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-
-
-class ListInstanceConfigsResponse(proto.Message):
-    r"""The response for
-    [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-
-    Attributes:
-        instance_configs (MutableSequence[google.cloud.spanner_admin_instance_v1.types.InstanceConfig]):
-            The list of requested instance
-            configurations.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs]
-            call to fetch more of the matching instance configurations.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    instance_configs: MutableSequence["InstanceConfig"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="InstanceConfig",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class GetInstanceConfigRequest(proto.Message):
-    r"""The request for
-    [GetInstanceConfigRequest][google.spanner.admin.instance.v1.InstanceAdmin.GetInstanceConfig].
-
-    Attributes:
-        name (str):
-            Required. The name of the requested instance configuration.
-            Values are of the form
-            ``projects/<project>/instanceConfigs/<config>``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class CreateInstanceConfigRequest(proto.Message):
-    r"""The request for
-    [CreateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstanceConfig].
-
-    Attributes:
-        parent (str):
-            Required. The name of the project in which to create the
-            instance configuration. Values are of the form
-            ``projects/<project>``.
-        instance_config_id (str):
-            Required. The ID of the instance configuration to create.
-            Valid identifiers are of the form
-            ``custom-[-a-z0-9]*[a-z0-9]`` and must be between 2 and 64
-            characters in length. The ``custom-`` prefix is required to
-            avoid name conflicts with Google-managed configurations.
-        instance_config (google.cloud.spanner_admin_instance_v1.types.InstanceConfig):
-            Required. The ``InstanceConfig`` proto of the configuration
-            to create. ``instance_config.name`` must be
-            ``<parent>/instanceConfigs/<instance_config_id>``.
-            ``instance_config.base_config`` must be a Google-managed
-            configuration name, e.g. /instanceConfigs/us-east1,
-            /instanceConfigs/nam3.
-        validate_only (bool):
-            An option to validate, but not actually
-            execute, a request, and provide the same
-            response.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    instance_config_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    instance_config: "InstanceConfig" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="InstanceConfig",
-    )
-    validate_only: bool = proto.Field(
-        proto.BOOL,
-        number=4,
-    )
-
-
-class UpdateInstanceConfigRequest(proto.Message):
-    r"""The request for
-    [UpdateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstanceConfig].
-
-    Attributes:
-        instance_config (google.cloud.spanner_admin_instance_v1.types.InstanceConfig):
-            Required. The user instance configuration to update, which
-            must always include the instance configuration name.
-            Otherwise, only fields mentioned in
-            [update_mask][google.spanner.admin.instance.v1.UpdateInstanceConfigRequest.update_mask]
-            need be included. To prevent conflicts of concurrent
-            updates,
-            [etag][google.spanner.admin.instance.v1.InstanceConfig.reconciling]
-            can be used.
-        update_mask (google.protobuf.field_mask_pb2.FieldMask):
-            Required. A mask specifying which fields in
-            [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-            should be updated. The field mask must always be specified;
-            this prevents any future fields in
-            [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-            from being erased accidentally by clients that do not know
-            about them. Only display_name and labels can be updated.
-        validate_only (bool):
-            An option to validate, but not actually
-            execute, a request, and provide the same
-            response.
-    """
-
-    instance_config: "InstanceConfig" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="InstanceConfig",
-    )
-    update_mask: field_mask_pb2.FieldMask = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=field_mask_pb2.FieldMask,
-    )
-    validate_only: bool = proto.Field(
-        proto.BOOL,
-        number=3,
-    )
-
-
-class DeleteInstanceConfigRequest(proto.Message):
-    r"""The request for
-    [DeleteInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstanceConfig].
-
-    Attributes:
-        name (str):
-            Required. The name of the instance configuration to be
-            deleted. Values are of the form
-            ``projects/<project>/instanceConfigs/<instance_config>``
-        etag (str):
-            Used for optimistic concurrency control as a
-            way to help prevent simultaneous deletes of an
-            instance configuration from overwriting each
-            other. If not empty, the API
-            only deletes the instance configuration when the
-            etag provided matches the current status of the
-            requested instance configuration. Otherwise,
-            deletes the instance configuration without
-            checking the current status of the requested
-            instance configuration.
-        validate_only (bool):
-            An option to validate, but not actually
-            execute, a request, and provide the same
-            response.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    etag: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    validate_only: bool = proto.Field(
-        proto.BOOL,
-        number=3,
-    )
-
-
-class ListInstanceConfigOperationsRequest(proto.Message):
-    r"""The request for
-    [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-
-    Attributes:
-        parent (str):
-            Required. The project of the instance configuration
-            operations. Values are of the form ``projects/<project>``.
-        filter (str):
-            An expression that filters the list of returned operations.
-
-            A filter expression consists of a field name, a comparison
-            operator, and a value for filtering. The value must be a
-            string, a number, or a boolean. The comparison operator must
-            be one of: ``<``, ``>``, ``<=``, ``>=``, ``!=``, ``=``, or
-            ``:``. Colon ``:`` is the contains operator. Filter rules
-            are not case sensitive.
-
-            The following fields in the Operation are eligible for
-            filtering:
-
-            - ``name`` - The name of the long-running operation
-            - ``done`` - False if the operation is in progress, else
-              true.
-            - ``metadata.@type`` - the type of metadata. For example,
-              the type string for
-              [CreateInstanceConfigMetadata][google.spanner.admin.instance.v1.CreateInstanceConfigMetadata]
-              is
-              ``type.googleapis.com/google.spanner.admin.instance.v1.CreateInstanceConfigMetadata``.
-            - ``metadata.<field_name>`` - any field in metadata.value.
-              ``metadata.@type`` must be specified first, if filtering
-              on metadata fields.
-            - ``error`` - Error associated with the long-running
-              operation.
-            - ``response.@type`` - the type of response.
-            - ``response.<field_name>`` - any field in response.value.
-
-            You can combine multiple expressions by enclosing each
-            expression in parentheses. By default, expressions are
-            combined with AND logic. However, you can specify AND, OR,
-            and NOT logic explicitly.
-
-            Here are a few examples:
-
-            - ``done:true`` - The operation is complete.
-            - ``(metadata.@type=``
-              ``type.googleapis.com/google.spanner.admin.instance.v1.CreateInstanceConfigMetadata) AND``
-              ``(metadata.instance_config.name:custom-config) AND``
-              ``(metadata.progress.start_time < \"2021-03-28T14:50:00Z\") AND``
-              ``(error:*)`` - Return operations where:
-
-              - The operation's metadata type is
-                [CreateInstanceConfigMetadata][google.spanner.admin.instance.v1.CreateInstanceConfigMetadata].
-              - The instance configuration name contains
-                "custom-config".
-              - The operation started before 2021-03-28T14:50:00Z.
-              - The operation resulted in an error.
-        page_size (int):
-            Number of operations to be returned in the
-            response. If 0 or less, defaults to the server's
-            maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse.next_page_token]
-            from a previous
-            [ListInstanceConfigOperationsResponse][google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse]
-            to the same ``parent`` and with the same ``filter``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    filter: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-
-
-class ListInstanceConfigOperationsResponse(proto.Message):
-    r"""The response for
-    [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations].
-
-    Attributes:
-        operations (MutableSequence[google.longrunning.operations_pb2.Operation]):
-            The list of matching instance configuration long-running
-            operations. Each operation's name will be prefixed by the
-            name of the instance configuration. The operation's metadata
-            field type ``metadata.type_url`` describes the type of the
-            metadata.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListInstanceConfigOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigOperations]
-            call to fetch more of the matching metadata.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    operations: MutableSequence[operations_pb2.Operation] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=operations_pb2.Operation,
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class GetInstanceRequest(proto.Message):
-    r"""The request for
-    [GetInstance][google.spanner.admin.instance.v1.InstanceAdmin.GetInstance].
-
-    Attributes:
-        name (str):
-            Required. The name of the requested instance. Values are of
-            the form ``projects/<project>/instances/<instance>``.
-        field_mask (google.protobuf.field_mask_pb2.FieldMask):
-            If field_mask is present, specifies the subset of
-            [Instance][google.spanner.admin.instance.v1.Instance] fields
-            that should be returned. If absent, all
-            [Instance][google.spanner.admin.instance.v1.Instance] fields
-            are returned.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    field_mask: field_mask_pb2.FieldMask = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=field_mask_pb2.FieldMask,
-    )
-
-
-class CreateInstanceRequest(proto.Message):
-    r"""The request for
-    [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance].
-
-    Attributes:
-        parent (str):
-            Required. The name of the project in which to create the
-            instance. Values are of the form ``projects/<project>``.
-        instance_id (str):
-            Required. The ID of the instance to create. Valid
-            identifiers are of the form ``[a-z][-a-z0-9]*[a-z0-9]`` and
-            must be between 2 and 64 characters in length.
-        instance (google.cloud.spanner_admin_instance_v1.types.Instance):
-            Required. The instance to create. The name may be omitted,
-            but if specified must be
-            ``<parent>/instances/<instance_id>``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    instance_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    instance: "Instance" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="Instance",
-    )
-
-
-class ListInstancesRequest(proto.Message):
-    r"""The request for
-    [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-
-    Attributes:
-        parent (str):
-            Required. The name of the project for which a list of
-            instances is requested. Values are of the form
-            ``projects/<project>``.
-        page_size (int):
-            Number of instances to be returned in the
-            response. If 0 or less, defaults to the server's
-            maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.instance.v1.ListInstancesResponse.next_page_token]
-            from a previous
-            [ListInstancesResponse][google.spanner.admin.instance.v1.ListInstancesResponse].
-        filter (str):
-            An expression for filtering the results of the request.
-            Filter rules are case insensitive. The fields eligible for
-            filtering are:
-
-            - ``name``
-            - ``display_name``
-            - ``labels.key`` where key is the name of a label
-
-            Some examples of using filters are:
-
-            - ``name:*`` --> The instance has a name.
-            - ``name:Howl`` --> The instance's name contains the string
-              "howl".
-            - ``name:HOWL`` --> Equivalent to above.
-            - ``NAME:howl`` --> Equivalent to above.
-            - ``labels.env:*`` --> The instance has the label "env".
-            - ``labels.env:dev`` --> The instance has the label "env"
-              and the value of the label contains the string "dev".
-            - ``name:howl labels.env:dev`` --> The instance's name
-              contains "howl" and it has the label "env" with its value
-              containing "dev".
-        instance_deadline (google.protobuf.timestamp_pb2.Timestamp):
-            Deadline used while retrieving metadata for instances.
-            Instances whose metadata cannot be retrieved within this
-            deadline will be added to
-            [unreachable][google.spanner.admin.instance.v1.ListInstancesResponse.unreachable]
-            in
-            [ListInstancesResponse][google.spanner.admin.instance.v1.ListInstancesResponse].
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=2,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    filter: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-    instance_deadline: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class ListInstancesResponse(proto.Message):
-    r"""The response for
-    [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances].
-
-    Attributes:
-        instances (MutableSequence[google.cloud.spanner_admin_instance_v1.types.Instance]):
-            The list of requested instances.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListInstances][google.spanner.admin.instance.v1.InstanceAdmin.ListInstances]
-            call to fetch more of the matching instances.
-        unreachable (MutableSequence[str]):
-            The list of unreachable instances. It includes the names of
-            instances whose metadata could not be retrieved within
-            [instance_deadline][google.spanner.admin.instance.v1.ListInstancesRequest.instance_deadline].
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    instances: MutableSequence["Instance"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="Instance",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    unreachable: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class UpdateInstanceRequest(proto.Message):
-    r"""The request for
-    [UpdateInstance][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstance].
-
-    Attributes:
-        instance (google.cloud.spanner_admin_instance_v1.types.Instance):
-            Required. The instance to update, which must always include
-            the instance name. Otherwise, only fields mentioned in
-            [field_mask][google.spanner.admin.instance.v1.UpdateInstanceRequest.field_mask]
-            need be included.
-        field_mask (google.protobuf.field_mask_pb2.FieldMask):
-            Required. A mask specifying which fields in
-            [Instance][google.spanner.admin.instance.v1.Instance] should
-            be updated. The field mask must always be specified; this
-            prevents any future fields in
-            [Instance][google.spanner.admin.instance.v1.Instance] from
-            being erased accidentally by clients that do not know about
-            them.
-    """
-
-    instance: "Instance" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="Instance",
-    )
-    field_mask: field_mask_pb2.FieldMask = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=field_mask_pb2.FieldMask,
-    )
-
-
-class DeleteInstanceRequest(proto.Message):
-    r"""The request for
-    [DeleteInstance][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstance].
-
-    Attributes:
-        name (str):
-            Required. The name of the instance to be deleted. Values are
-            of the form ``projects/<project>/instances/<instance>``
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class CreateInstanceMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance].
-
-    Attributes:
-        instance (google.cloud.spanner_admin_instance_v1.types.Instance):
-            The instance being created.
-        start_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which the
-            [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance]
-            request was received.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled. If set, this operation is in the
-            process of undoing itself (which is guaranteed
-            to succeed) and cannot be cancelled again.
-        end_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation failed or
-            was completed successfully.
-        expected_fulfillment_period (google.cloud.spanner_admin_instance_v1.types.FulfillmentPeriod):
-            The expected fulfillment period of this
-            create operation.
-    """
-
-    instance: "Instance" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="Instance",
-    )
-    start_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    end_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-    expected_fulfillment_period: common.FulfillmentPeriod = proto.Field(
-        proto.ENUM,
-        number=5,
-        enum=common.FulfillmentPeriod,
-    )
-
-
-class UpdateInstanceMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [UpdateInstance][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstance].
-
-    Attributes:
-        instance (google.cloud.spanner_admin_instance_v1.types.Instance):
-            The desired end state of the update.
-        start_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which
-            [UpdateInstance][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstance]
-            request was received.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled. If set, this operation is in the
-            process of undoing itself (which is guaranteed
-            to succeed) and cannot be cancelled again.
-        end_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation failed or
-            was completed successfully.
-        expected_fulfillment_period (google.cloud.spanner_admin_instance_v1.types.FulfillmentPeriod):
-            The expected fulfillment period of this
-            update operation.
-    """
-
-    instance: "Instance" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="Instance",
-    )
-    start_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    end_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-    expected_fulfillment_period: common.FulfillmentPeriod = proto.Field(
-        proto.ENUM,
-        number=5,
-        enum=common.FulfillmentPeriod,
-    )
-
-
-class FreeInstanceMetadata(proto.Message):
-    r"""Free instance specific metadata that is kept even after an
-    instance has been upgraded for tracking purposes.
-
-    Attributes:
-        expire_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. Timestamp after which the
-            instance will either be upgraded or scheduled
-            for deletion after a grace period.
-            ExpireBehavior is used to choose between
-            upgrading or scheduling the free instance for
-            deletion. This timestamp is set during the
-            creation of a free instance.
-        upgrade_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. If present, the timestamp at
-            which the free instance was upgraded to a
-            provisioned instance.
-        expire_behavior (google.cloud.spanner_admin_instance_v1.types.FreeInstanceMetadata.ExpireBehavior):
-            Specifies the expiration behavior of a free instance. The
-            default of ExpireBehavior is ``REMOVE_AFTER_GRACE_PERIOD``.
-            This can be modified during or after creation, and before
-            expiration.
-    """
-
-    class ExpireBehavior(proto.Enum):
-        r"""Allows users to change behavior when a free instance expires.
-
-        Values:
-            EXPIRE_BEHAVIOR_UNSPECIFIED (0):
-                Not specified.
-            FREE_TO_PROVISIONED (1):
-                When the free instance expires, upgrade the
-                instance to a provisioned instance.
-            REMOVE_AFTER_GRACE_PERIOD (2):
-                When the free instance expires, disable the
-                instance, and delete it after the grace period
-                passes if it has not been upgraded.
-        """
-        EXPIRE_BEHAVIOR_UNSPECIFIED = 0
-        FREE_TO_PROVISIONED = 1
-        REMOVE_AFTER_GRACE_PERIOD = 2
-
-    expire_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message=timestamp_pb2.Timestamp,
-    )
-    upgrade_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    expire_behavior: ExpireBehavior = proto.Field(
-        proto.ENUM,
-        number=3,
-        enum=ExpireBehavior,
-    )
-
-
-class CreateInstanceConfigMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [CreateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstanceConfig].
-
-    Attributes:
-        instance_config (google.cloud.spanner_admin_instance_v1.types.InstanceConfig):
-            The target instance configuration end state.
-        progress (google.cloud.spanner_admin_instance_v1.types.OperationProgress):
-            The progress of the
-            [CreateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstanceConfig]
-            operation.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled.
-    """
-
-    instance_config: "InstanceConfig" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="InstanceConfig",
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=common.OperationProgress,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class UpdateInstanceConfigMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [UpdateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstanceConfig].
-
-    Attributes:
-        instance_config (google.cloud.spanner_admin_instance_v1.types.InstanceConfig):
-            The desired instance configuration after
-            updating.
-        progress (google.cloud.spanner_admin_instance_v1.types.OperationProgress):
-            The progress of the
-            [UpdateInstanceConfig][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstanceConfig]
-            operation.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled.
-    """
-
-    instance_config: "InstanceConfig" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="InstanceConfig",
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=common.OperationProgress,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class InstancePartition(proto.Message):
-    r"""An isolated set of Cloud Spanner resources that databases can
-    define placements on.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        name (str):
-            Required. A unique identifier for the instance partition.
-            Values are of the form
-            ``projects/<project>/instances/<instance>/instancePartitions/[a-z][-a-z0-9]*[a-z0-9]``.
-            The final segment of the name must be between 2 and 64
-            characters in length. An instance partition's name cannot be
-            changed after the instance partition is created.
-        config (str):
-            Required. The name of the instance partition's
-            configuration. Values are of the form
-            ``projects/<project>/instanceConfigs/<configuration>``. See
-            also
-            [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
-            and
-            [ListInstanceConfigs][google.spanner.admin.instance.v1.InstanceAdmin.ListInstanceConfigs].
-        display_name (str):
-            Required. The descriptive name for this
-            instance partition as it appears in UIs. Must be
-            unique per project and between 4 and 30
-            characters in length.
-        node_count (int):
-            The number of nodes allocated to this instance partition.
-
-            Users can set the ``node_count`` field to specify the target
-            number of nodes allocated to the instance partition.
-
-            This may be zero in API responses for instance partitions
-            that are not yet in state ``READY``.
-
-            This field is a member of `oneof`_ ``compute_capacity``.
-        processing_units (int):
-            The number of processing units allocated to this instance
-            partition.
-
-            Users can set the ``processing_units`` field to specify the
-            target number of processing units allocated to the instance
-            partition.
-
-            This might be zero in API responses for instance partitions
-            that are not yet in the ``READY`` state.
-
-            This field is a member of `oneof`_ ``compute_capacity``.
-        autoscaling_config (google.cloud.spanner_admin_instance_v1.types.AutoscalingConfig):
-            Optional. The autoscaling configuration. Autoscaling is
-            enabled if this field is set. When autoscaling is enabled,
-            fields in compute_capacity are treated as OUTPUT_ONLY fields
-            and reflect the current compute capacity allocated to the
-            instance partition.
-        state (google.cloud.spanner_admin_instance_v1.types.InstancePartition.State):
-            Output only. The current instance partition
-            state.
-        create_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The time at which the instance
-            partition was created.
-        update_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The time at which the instance
-            partition was most recently updated.
-        referencing_databases (MutableSequence[str]):
-            Output only. The names of the databases that
-            reference this instance partition. Referencing
-            databases should share the parent instance. The
-            existence of any referencing database prevents
-            the instance partition from being deleted.
-        referencing_backups (MutableSequence[str]):
-            Output only. Deprecated: This field is not
-            populated. Output only. The names of the backups
-            that reference this instance partition.
-            Referencing backups should share the parent
-            instance. The existence of any referencing
-            backup prevents the instance partition from
-            being deleted.
-        etag (str):
-            Used for optimistic concurrency control as a
-            way to help prevent simultaneous updates of a
-            instance partition from overwriting each other.
-            It is strongly suggested that systems make use
-            of the etag in the read-modify-write cycle to
-            perform instance partition updates in order to
-            avoid race conditions: An etag is returned in
-            the response which contains instance partitions,
-            and systems are expected to put that etag in the
-            request to update instance partitions to ensure
-            that their change will be applied to the same
-            version of the instance partition. If no etag is
-            provided in the call to update instance
-            partition, then the existing instance partition
-            is overwritten blindly.
-    """
-
-    class State(proto.Enum):
-        r"""Indicates the current state of the instance partition.
-
-        Values:
-            STATE_UNSPECIFIED (0):
-                Not specified.
-            CREATING (1):
-                The instance partition is still being
-                created. Resources may not be available yet, and
-                operations such as creating placements using
-                this instance partition may not work.
-            READY (2):
-                The instance partition is fully created and
-                ready to do work such as creating placements and
-                using in databases.
-        """
-        STATE_UNSPECIFIED = 0
-        CREATING = 1
-        READY = 2
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    config: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    display_name: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    node_count: int = proto.Field(
-        proto.INT32,
-        number=5,
-        oneof="compute_capacity",
-    )
-    processing_units: int = proto.Field(
-        proto.INT32,
-        number=6,
-        oneof="compute_capacity",
-    )
-    autoscaling_config: "AutoscalingConfig" = proto.Field(
-        proto.MESSAGE,
-        number=13,
-        message="AutoscalingConfig",
-    )
-    state: State = proto.Field(
-        proto.ENUM,
-        number=7,
-        enum=State,
-    )
-    create_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=8,
-        message=timestamp_pb2.Timestamp,
-    )
-    update_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=9,
-        message=timestamp_pb2.Timestamp,
-    )
-    referencing_databases: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=10,
-    )
-    referencing_backups: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=11,
-    )
-    etag: str = proto.Field(
-        proto.STRING,
-        number=12,
-    )
-
-
-class CreateInstancePartitionMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [CreateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstancePartition].
-
-    Attributes:
-        instance_partition (google.cloud.spanner_admin_instance_v1.types.InstancePartition):
-            The instance partition being created.
-        start_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which the
-            [CreateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstancePartition]
-            request was received.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled. If set, this operation is in the
-            process of undoing itself (which is guaranteed
-            to succeed) and cannot be cancelled again.
-        end_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation failed or
-            was completed successfully.
-    """
-
-    instance_partition: "InstancePartition" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="InstancePartition",
-    )
-    start_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    end_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class CreateInstancePartitionRequest(proto.Message):
-    r"""The request for
-    [CreateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstancePartition].
-
-    Attributes:
-        parent (str):
-            Required. The name of the instance in which to create the
-            instance partition. Values are of the form
-            ``projects/<project>/instances/<instance>``.
-        instance_partition_id (str):
-            Required. The ID of the instance partition to create. Valid
-            identifiers are of the form ``[a-z][-a-z0-9]*[a-z0-9]`` and
-            must be between 2 and 64 characters in length.
-        instance_partition (google.cloud.spanner_admin_instance_v1.types.InstancePartition):
-            Required. The instance partition to create. The
-            instance_partition.name may be omitted, but if specified
-            must be
-            ``<parent>/instancePartitions/<instance_partition_id>``.
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    instance_partition_id: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    instance_partition: "InstancePartition" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="InstancePartition",
-    )
-
-
-class DeleteInstancePartitionRequest(proto.Message):
-    r"""The request for
-    [DeleteInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.DeleteInstancePartition].
-
-    Attributes:
-        name (str):
-            Required. The name of the instance partition to be deleted.
-            Values are of the form
-            ``projects/{project}/instances/{instance}/instancePartitions/{instance_partition}``
-        etag (str):
-            Optional. If not empty, the API only deletes
-            the instance partition when the etag provided
-            matches the current status of the requested
-            instance partition. Otherwise, deletes the
-            instance partition without checking the current
-            status of the requested instance partition.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    etag: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class GetInstancePartitionRequest(proto.Message):
-    r"""The request for
-    [GetInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.GetInstancePartition].
-
-    Attributes:
-        name (str):
-            Required. The name of the requested instance partition.
-            Values are of the form
-            ``projects/{project}/instances/{instance}/instancePartitions/{instance_partition}``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class UpdateInstancePartitionRequest(proto.Message):
-    r"""The request for
-    [UpdateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstancePartition].
-
-    Attributes:
-        instance_partition (google.cloud.spanner_admin_instance_v1.types.InstancePartition):
-            Required. The instance partition to update, which must
-            always include the instance partition name. Otherwise, only
-            fields mentioned in
-            [field_mask][google.spanner.admin.instance.v1.UpdateInstancePartitionRequest.field_mask]
-            need be included.
-        field_mask (google.protobuf.field_mask_pb2.FieldMask):
-            Required. A mask specifying which fields in
-            [InstancePartition][google.spanner.admin.instance.v1.InstancePartition]
-            should be updated. The field mask must always be specified;
-            this prevents any future fields in
-            [InstancePartition][google.spanner.admin.instance.v1.InstancePartition]
-            from being erased accidentally by clients that do not know
-            about them.
-    """
-
-    instance_partition: "InstancePartition" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="InstancePartition",
-    )
-    field_mask: field_mask_pb2.FieldMask = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=field_mask_pb2.FieldMask,
-    )
-
-
-class UpdateInstancePartitionMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [UpdateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstancePartition].
-
-    Attributes:
-        instance_partition (google.cloud.spanner_admin_instance_v1.types.InstancePartition):
-            The desired end state of the update.
-        start_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which
-            [UpdateInstancePartition][google.spanner.admin.instance.v1.InstanceAdmin.UpdateInstancePartition]
-            request was received.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled. If set, this operation is in the
-            process of undoing itself (which is guaranteed
-            to succeed) and cannot be cancelled again.
-        end_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation failed or
-            was completed successfully.
-    """
-
-    instance_partition: "InstancePartition" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="InstancePartition",
-    )
-    start_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    end_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class ListInstancePartitionsRequest(proto.Message):
-    r"""The request for
-    [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-
-    Attributes:
-        parent (str):
-            Required. The instance whose instance partitions should be
-            listed. Values are of the form
-            ``projects/<project>/instances/<instance>``. Use
-            ``{instance} = '-'`` to list instance partitions for all
-            Instances in a project, e.g.,
-            ``projects/myproject/instances/-``.
-        page_size (int):
-            Number of instance partitions to be returned
-            in the response. If 0 or less, defaults to the
-            server's maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.instance.v1.ListInstancePartitionsResponse.next_page_token]
-            from a previous
-            [ListInstancePartitionsResponse][google.spanner.admin.instance.v1.ListInstancePartitionsResponse].
-        instance_partition_deadline (google.protobuf.timestamp_pb2.Timestamp):
-            Optional. Deadline used while retrieving metadata for
-            instance partitions. Instance partitions whose metadata
-            cannot be retrieved within this deadline will be added to
-            [unreachable][google.spanner.admin.instance.v1.ListInstancePartitionsResponse.unreachable]
-            in
-            [ListInstancePartitionsResponse][google.spanner.admin.instance.v1.ListInstancePartitionsResponse].
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=2,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    instance_partition_deadline: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class ListInstancePartitionsResponse(proto.Message):
-    r"""The response for
-    [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions].
-
-    Attributes:
-        instance_partitions (MutableSequence[google.cloud.spanner_admin_instance_v1.types.InstancePartition]):
-            The list of requested instancePartitions.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListInstancePartitions][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitions]
-            call to fetch more of the matching instance partitions.
-        unreachable (MutableSequence[str]):
-            The list of unreachable instances or instance partitions. It
-            includes the names of instances or instance partitions whose
-            metadata could not be retrieved within
-            [instance_partition_deadline][google.spanner.admin.instance.v1.ListInstancePartitionsRequest.instance_partition_deadline].
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    instance_partitions: MutableSequence["InstancePartition"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="InstancePartition",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    unreachable: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class ListInstancePartitionOperationsRequest(proto.Message):
-    r"""The request for
-    [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-
-    Attributes:
-        parent (str):
-            Required. The parent instance of the instance partition
-            operations. Values are of the form
-            ``projects/<project>/instances/<instance>``.
-        filter (str):
-            Optional. An expression that filters the list of returned
-            operations.
-
-            A filter expression consists of a field name, a comparison
-            operator, and a value for filtering. The value must be a
-            string, a number, or a boolean. The comparison operator must
-            be one of: ``<``, ``>``, ``<=``, ``>=``, ``!=``, ``=``, or
-            ``:``. Colon ``:`` is the contains operator. Filter rules
-            are not case sensitive.
-
-            The following fields in the Operation are eligible for
-            filtering:
-
-            - ``name`` - The name of the long-running operation
-            - ``done`` - False if the operation is in progress, else
-              true.
-            - ``metadata.@type`` - the type of metadata. For example,
-              the type string for
-              [CreateInstancePartitionMetadata][google.spanner.admin.instance.v1.CreateInstancePartitionMetadata]
-              is
-              ``type.googleapis.com/google.spanner.admin.instance.v1.CreateInstancePartitionMetadata``.
-            - ``metadata.<field_name>`` - any field in metadata.value.
-              ``metadata.@type`` must be specified first, if filtering
-              on metadata fields.
-            - ``error`` - Error associated with the long-running
-              operation.
-            - ``response.@type`` - the type of response.
-            - ``response.<field_name>`` - any field in response.value.
-
-            You can combine multiple expressions by enclosing each
-            expression in parentheses. By default, expressions are
-            combined with AND logic. However, you can specify AND, OR,
-            and NOT logic explicitly.
-
-            Here are a few examples:
-
-            - ``done:true`` - The operation is complete.
-            - ``(metadata.@type=``
-              ``type.googleapis.com/google.spanner.admin.instance.v1.CreateInstancePartitionMetadata) AND``
-              ``(metadata.instance_partition.name:custom-instance-partition) AND``
-              ``(metadata.start_time < \"2021-03-28T14:50:00Z\") AND``
-              ``(error:*)`` - Return operations where:
-
-              - The operation's metadata type is
-                [CreateInstancePartitionMetadata][google.spanner.admin.instance.v1.CreateInstancePartitionMetadata].
-              - The instance partition name contains
-                "custom-instance-partition".
-              - The operation started before 2021-03-28T14:50:00Z.
-              - The operation resulted in an error.
-        page_size (int):
-            Optional. Number of operations to be returned
-            in the response. If 0 or less, defaults to the
-            server's maximum allowed page size.
-        page_token (str):
-            Optional. If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.admin.instance.v1.ListInstancePartitionOperationsResponse.next_page_token]
-            from a previous
-            [ListInstancePartitionOperationsResponse][google.spanner.admin.instance.v1.ListInstancePartitionOperationsResponse]
-            to the same ``parent`` and with the same ``filter``.
-        instance_partition_deadline (google.protobuf.timestamp_pb2.Timestamp):
-            Optional. Deadline used while retrieving metadata for
-            instance partition operations. Instance partitions whose
-            operation metadata cannot be retrieved within this deadline
-            will be added to
-            [unreachable_instance_partitions][google.spanner.admin.instance.v1.ListInstancePartitionOperationsResponse.unreachable_instance_partitions]
-            in
-            [ListInstancePartitionOperationsResponse][google.spanner.admin.instance.v1.ListInstancePartitionOperationsResponse].
-    """
-
-    parent: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    filter: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-    instance_partition_deadline: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-class ListInstancePartitionOperationsResponse(proto.Message):
-    r"""The response for
-    [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations].
-
-    Attributes:
-        operations (MutableSequence[google.longrunning.operations_pb2.Operation]):
-            The list of matching instance partition long-running
-            operations. Each operation's name will be prefixed by the
-            instance partition's name. The operation's metadata field
-            type ``metadata.type_url`` describes the type of the
-            metadata.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListInstancePartitionOperations][google.spanner.admin.instance.v1.InstanceAdmin.ListInstancePartitionOperations]
-            call to fetch more of the matching metadata.
-        unreachable_instance_partitions (MutableSequence[str]):
-            The list of unreachable instance partitions. It includes the
-            names of instance partitions whose operation metadata could
-            not be retrieved within
-            [instance_partition_deadline][google.spanner.admin.instance.v1.ListInstancePartitionOperationsRequest.instance_partition_deadline].
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    operations: MutableSequence[operations_pb2.Operation] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=operations_pb2.Operation,
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    unreachable_instance_partitions: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=3,
-    )
-
-
-class MoveInstanceRequest(proto.Message):
-    r"""The request for
-    [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-
-    Attributes:
-        name (str):
-            Required. The instance to move. Values are of the form
-            ``projects/<project>/instances/<instance>``.
-        target_config (str):
-            Required. The target instance configuration where to move
-            the instance. Values are of the form
-            ``projects/<project>/instanceConfigs/<config>``.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    target_config: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class MoveInstanceResponse(proto.Message):
-    r"""The response for
-    [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-
-    """
-
-
-class MoveInstanceMetadata(proto.Message):
-    r"""Metadata type for the operation returned by
-    [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance].
-
-    Attributes:
-        target_config (str):
-            The target instance configuration where to move the
-            instance. Values are of the form
-            ``projects/<project>/instanceConfigs/<config>``.
-        progress (google.cloud.spanner_admin_instance_v1.types.OperationProgress):
-            The progress of the
-            [MoveInstance][google.spanner.admin.instance.v1.InstanceAdmin.MoveInstance]
-            operation.
-            [progress_percent][google.spanner.admin.instance.v1.OperationProgress.progress_percent]
-            is reset when cancellation is requested.
-        cancel_time (google.protobuf.timestamp_pb2.Timestamp):
-            The time at which this operation was
-            cancelled.
-    """
-
-    target_config: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    progress: common.OperationProgress = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=common.OperationProgress,
-    )
-    cancel_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/gapic_metadata.json b/google/cloud/spanner_v1/gapic_metadata.json
deleted file mode 100644
index f5957c633a..0000000000
--- a/google/cloud/spanner_v1/gapic_metadata.json
+++ /dev/null
@@ -1,268 +0,0 @@
- {
-  "comment": "This file maps proto services/RPCs to the corresponding library clients/methods",
-  "language": "python",
-  "libraryPackage": "google.cloud.spanner_v1",
-  "protoPackage": "google.spanner.v1",
-  "schema": "1.0",
-  "services": {
-    "Spanner": {
-      "clients": {
-        "grpc": {
-          "libraryClient": "SpannerClient",
-          "rpcs": {
-            "BatchCreateSessions": {
-              "methods": [
-                "batch_create_sessions"
-              ]
-            },
-            "BatchWrite": {
-              "methods": [
-                "batch_write"
-              ]
-            },
-            "BeginTransaction": {
-              "methods": [
-                "begin_transaction"
-              ]
-            },
-            "Commit": {
-              "methods": [
-                "commit"
-              ]
-            },
-            "CreateSession": {
-              "methods": [
-                "create_session"
-              ]
-            },
-            "DeleteSession": {
-              "methods": [
-                "delete_session"
-              ]
-            },
-            "ExecuteBatchDml": {
-              "methods": [
-                "execute_batch_dml"
-              ]
-            },
-            "ExecuteSql": {
-              "methods": [
-                "execute_sql"
-              ]
-            },
-            "ExecuteStreamingSql": {
-              "methods": [
-                "execute_streaming_sql"
-              ]
-            },
-            "GetSession": {
-              "methods": [
-                "get_session"
-              ]
-            },
-            "ListSessions": {
-              "methods": [
-                "list_sessions"
-              ]
-            },
-            "PartitionQuery": {
-              "methods": [
-                "partition_query"
-              ]
-            },
-            "PartitionRead": {
-              "methods": [
-                "partition_read"
-              ]
-            },
-            "Read": {
-              "methods": [
-                "read"
-              ]
-            },
-            "Rollback": {
-              "methods": [
-                "rollback"
-              ]
-            },
-            "StreamingRead": {
-              "methods": [
-                "streaming_read"
-              ]
-            }
-          }
-        },
-        "grpc-async": {
-          "libraryClient": "SpannerAsyncClient",
-          "rpcs": {
-            "BatchCreateSessions": {
-              "methods": [
-                "batch_create_sessions"
-              ]
-            },
-            "BatchWrite": {
-              "methods": [
-                "batch_write"
-              ]
-            },
-            "BeginTransaction": {
-              "methods": [
-                "begin_transaction"
-              ]
-            },
-            "Commit": {
-              "methods": [
-                "commit"
-              ]
-            },
-            "CreateSession": {
-              "methods": [
-                "create_session"
-              ]
-            },
-            "DeleteSession": {
-              "methods": [
-                "delete_session"
-              ]
-            },
-            "ExecuteBatchDml": {
-              "methods": [
-                "execute_batch_dml"
-              ]
-            },
-            "ExecuteSql": {
-              "methods": [
-                "execute_sql"
-              ]
-            },
-            "ExecuteStreamingSql": {
-              "methods": [
-                "execute_streaming_sql"
-              ]
-            },
-            "GetSession": {
-              "methods": [
-                "get_session"
-              ]
-            },
-            "ListSessions": {
-              "methods": [
-                "list_sessions"
-              ]
-            },
-            "PartitionQuery": {
-              "methods": [
-                "partition_query"
-              ]
-            },
-            "PartitionRead": {
-              "methods": [
-                "partition_read"
-              ]
-            },
-            "Read": {
-              "methods": [
-                "read"
-              ]
-            },
-            "Rollback": {
-              "methods": [
-                "rollback"
-              ]
-            },
-            "StreamingRead": {
-              "methods": [
-                "streaming_read"
-              ]
-            }
-          }
-        },
-        "rest": {
-          "libraryClient": "SpannerClient",
-          "rpcs": {
-            "BatchCreateSessions": {
-              "methods": [
-                "batch_create_sessions"
-              ]
-            },
-            "BatchWrite": {
-              "methods": [
-                "batch_write"
-              ]
-            },
-            "BeginTransaction": {
-              "methods": [
-                "begin_transaction"
-              ]
-            },
-            "Commit": {
-              "methods": [
-                "commit"
-              ]
-            },
-            "CreateSession": {
-              "methods": [
-                "create_session"
-              ]
-            },
-            "DeleteSession": {
-              "methods": [
-                "delete_session"
-              ]
-            },
-            "ExecuteBatchDml": {
-              "methods": [
-                "execute_batch_dml"
-              ]
-            },
-            "ExecuteSql": {
-              "methods": [
-                "execute_sql"
-              ]
-            },
-            "ExecuteStreamingSql": {
-              "methods": [
-                "execute_streaming_sql"
-              ]
-            },
-            "GetSession": {
-              "methods": [
-                "get_session"
-              ]
-            },
-            "ListSessions": {
-              "methods": [
-                "list_sessions"
-              ]
-            },
-            "PartitionQuery": {
-              "methods": [
-                "partition_query"
-              ]
-            },
-            "PartitionRead": {
-              "methods": [
-                "partition_read"
-              ]
-            },
-            "Read": {
-              "methods": [
-                "read"
-              ]
-            },
-            "Rollback": {
-              "methods": [
-                "rollback"
-              ]
-            },
-            "StreamingRead": {
-              "methods": [
-                "streaming_read"
-              ]
-            }
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/google/cloud/spanner_v1/gapic_version.py b/google/cloud/spanner_v1/gapic_version.py
deleted file mode 100644
index bf54fc40ae..0000000000
--- a/google/cloud/spanner_v1/gapic_version.py
+++ /dev/null
@@ -1,16 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-__version__ = "3.63.0"  # {x-release-please-version}
diff --git a/google/cloud/spanner_v1/py.typed b/google/cloud/spanner_v1/py.typed
deleted file mode 100644
index 0989eccd04..0000000000
--- a/google/cloud/spanner_v1/py.typed
+++ /dev/null
@@ -1,2 +0,0 @@
-# Marker file for PEP 561.
-# The google-cloud-spanner package uses inline types.
diff --git a/google/cloud/spanner_v1/services/__init__.py b/google/cloud/spanner_v1/services/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/google/cloud/spanner_v1/services/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/google/cloud/spanner_v1/services/spanner/__init__.py b/google/cloud/spanner_v1/services/spanner/__init__.py
deleted file mode 100644
index 3c03f3e502..0000000000
--- a/google/cloud/spanner_v1/services/spanner/__init__.py
+++ /dev/null
@@ -1,22 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from .async_client import SpannerAsyncClient
-from .client import SpannerClient
-
-__all__ = (
-    "SpannerClient",
-    "SpannerAsyncClient",
-)
diff --git a/google/cloud/spanner_v1/services/spanner/async_client.py b/google/cloud/spanner_v1/services/spanner/async_client.py
deleted file mode 100644
index a6617f9b3c..0000000000
--- a/google/cloud/spanner_v1/services/spanner/async_client.py
+++ /dev/null
@@ -1,2213 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-import logging as std_logging
-import re
-from typing import (
-    AsyncIterable,
-    Awaitable,
-    Callable,
-    Dict,
-    Mapping,
-    MutableMapping,
-    MutableSequence,
-    Optional,
-    Sequence,
-    Tuple,
-    Type,
-    Union,
-)
-
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1
-from google.api_core import retry_async as retries
-from google.api_core.client_options import ClientOptions
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-
-from google.cloud.spanner_v1 import gapic_version as package_version
-
-try:
-    OptionalRetry = Union[retries.AsyncRetry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.AsyncRetry, object, None]  # type: ignore
-
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.rpc import status_pb2  # type: ignore
-
-from google.cloud.spanner_v1.services.spanner import pagers
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    location,
-    mutation,
-    result_set,
-    spanner,
-    transaction,
-)
-
-from .client import SpannerClient
-from .transports.base import DEFAULT_CLIENT_INFO, SpannerTransport
-from .transports.grpc_asyncio import SpannerGrpcAsyncIOTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class SpannerAsyncClient:
-    """Cloud Spanner API
-
-    The Cloud Spanner API can be used to manage sessions and execute
-    transactions on data stored in Cloud Spanner databases.
-    """
-
-    _client: SpannerClient
-
-    # Copy defaults from the synchronous client for use here.
-    # Note: DEFAULT_ENDPOINT is deprecated. Use _DEFAULT_ENDPOINT_TEMPLATE instead.
-    DEFAULT_ENDPOINT = SpannerClient.DEFAULT_ENDPOINT
-    DEFAULT_MTLS_ENDPOINT = SpannerClient.DEFAULT_MTLS_ENDPOINT
-    _DEFAULT_ENDPOINT_TEMPLATE = SpannerClient._DEFAULT_ENDPOINT_TEMPLATE
-    _DEFAULT_UNIVERSE = SpannerClient._DEFAULT_UNIVERSE
-
-    database_path = staticmethod(SpannerClient.database_path)
-    parse_database_path = staticmethod(SpannerClient.parse_database_path)
-    session_path = staticmethod(SpannerClient.session_path)
-    parse_session_path = staticmethod(SpannerClient.parse_session_path)
-    common_billing_account_path = staticmethod(
-        SpannerClient.common_billing_account_path
-    )
-    parse_common_billing_account_path = staticmethod(
-        SpannerClient.parse_common_billing_account_path
-    )
-    common_folder_path = staticmethod(SpannerClient.common_folder_path)
-    parse_common_folder_path = staticmethod(SpannerClient.parse_common_folder_path)
-    common_organization_path = staticmethod(SpannerClient.common_organization_path)
-    parse_common_organization_path = staticmethod(
-        SpannerClient.parse_common_organization_path
-    )
-    common_project_path = staticmethod(SpannerClient.common_project_path)
-    parse_common_project_path = staticmethod(SpannerClient.parse_common_project_path)
-    common_location_path = staticmethod(SpannerClient.common_location_path)
-    parse_common_location_path = staticmethod(SpannerClient.parse_common_location_path)
-
-    @classmethod
-    def from_service_account_info(cls, info: dict, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            info.
-
-        Args:
-            info (dict): The service account private key info.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            SpannerAsyncClient: The constructed client.
-        """
-        return SpannerClient.from_service_account_info.__func__(SpannerAsyncClient, info, *args, **kwargs)  # type: ignore
-
-    @classmethod
-    def from_service_account_file(cls, filename: str, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            file.
-
-        Args:
-            filename (str): The path to the service account private key json
-                file.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            SpannerAsyncClient: The constructed client.
-        """
-        return SpannerClient.from_service_account_file.__func__(SpannerAsyncClient, filename, *args, **kwargs)  # type: ignore
-
-    from_service_account_json = from_service_account_file
-
-    @classmethod
-    def get_mtls_endpoint_and_cert_source(
-        cls, client_options: Optional[ClientOptions] = None
-    ):
-        """Return the API endpoint and client cert source for mutual TLS.
-
-        The client cert source is determined in the following order:
-        (1) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not "true", the
-        client cert source is None.
-        (2) if `client_options.client_cert_source` is provided, use the provided one; if the
-        default client cert source exists, use the default one; otherwise the client cert
-        source is None.
-
-        The API endpoint is determined in the following order:
-        (1) if `client_options.api_endpoint` if provided, use the provided one.
-        (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variable is "never", use the default API
-        endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
-        use the default API endpoint.
-
-        More details can be found at https://google.aip.dev/auth/4114.
-
-        Args:
-            client_options (google.api_core.client_options.ClientOptions): Custom options for the
-                client. Only the `api_endpoint` and `client_cert_source` properties may be used
-                in this method.
-
-        Returns:
-            Tuple[str, Callable[[], Tuple[bytes, bytes]]]: returns the API endpoint and the
-                client cert source to use.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If any errors happen.
-        """
-        return SpannerClient.get_mtls_endpoint_and_cert_source(client_options)  # type: ignore
-
-    @property
-    def transport(self) -> SpannerTransport:
-        """Returns the transport used by the client instance.
-
-        Returns:
-            SpannerTransport: The transport used by the client instance.
-        """
-        return self._client.transport
-
-    @property
-    def api_endpoint(self):
-        """Return the API endpoint used by the client instance.
-
-        Returns:
-            str: The API endpoint used by the client instance.
-        """
-        return self._client._api_endpoint
-
-    @property
-    def universe_domain(self) -> str:
-        """Return the universe domain used by the client instance.
-
-        Returns:
-            str: The universe domain used
-                by the client instance.
-        """
-        return self._client._universe_domain
-
-    get_transport_class = SpannerClient.get_transport_class
-
-    def __init__(
-        self,
-        *,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        transport: Optional[
-            Union[str, SpannerTransport, Callable[..., SpannerTransport]]
-        ] = "grpc_asyncio",
-        client_options: Optional[ClientOptions] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-    ) -> None:
-        """Instantiates the spanner async client.
-
-        Args:
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            transport (Optional[Union[str,SpannerTransport,Callable[..., SpannerTransport]]]):
-                The transport to use, or a Callable that constructs and returns a new transport to use.
-                If a Callable is given, it will be called with the same set of initialization
-                arguments as used in the SpannerTransport constructor.
-                If set to None, a transport is chosen automatically.
-            client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]):
-                Custom options for the client.
-
-                1. The ``api_endpoint`` property can be used to override the
-                default endpoint provided by the client when ``transport`` is
-                not explicitly provided. Only if this property is not set and
-                ``transport`` was not explicitly provided, the endpoint is
-                determined by the GOOGLE_API_USE_MTLS_ENDPOINT environment
-                variable, which have one of the following values:
-                "always" (always use the default mTLS endpoint), "never" (always
-                use the default regular endpoint) and "auto" (auto-switch to the
-                default mTLS endpoint if client certificate is present; this is
-                the default value).
-
-                2. If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
-                is "true", then the ``client_cert_source`` property can be used
-                to provide a client certificate for mTLS transport. If
-                not provided, the default SSL client certificate will be used if
-                present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
-                set, no client certificate will be used.
-
-                3. The ``universe_domain`` property can be used to override the
-                default "googleapis.com" universe. Note that ``api_endpoint``
-                property still takes precedence; and ``universe_domain`` is
-                currently not supported for mTLS.
-
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-
-        Raises:
-            google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
-                creation failed for any reason.
-        """
-        self._client = SpannerClient(
-            credentials=credentials,
-            transport=transport,
-            client_options=client_options,
-            client_info=client_info,
-        )
-
-        if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        ):  # pragma: NO COVER
-            _LOGGER.debug(
-                "Created client `google.spanner_v1.SpannerAsyncClient`.",
-                extra={
-                    "serviceName": "google.spanner.v1.Spanner",
-                    "universeDomain": getattr(
-                        self._client._transport._credentials, "universe_domain", ""
-                    ),
-                    "credentialsType": f"{type(self._client._transport._credentials).__module__}.{type(self._client._transport._credentials).__qualname__}",
-                    "credentialsInfo": getattr(
-                        self.transport._credentials, "get_cred_info", lambda: None
-                    )(),
-                }
-                if hasattr(self._client._transport, "_credentials")
-                else {
-                    "serviceName": "google.spanner.v1.Spanner",
-                    "credentialsType": None,
-                },
-            )
-
-    async def create_session(
-        self,
-        request: Optional[Union[spanner.CreateSessionRequest, dict]] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.Session:
-        r"""Creates a new session. A session can be used to perform
-        transactions that read and/or modify data in a Cloud Spanner
-        database. Sessions are meant to be reused for many consecutive
-        transactions.
-
-        Sessions can only execute one transaction at a time. To execute
-        multiple concurrent read-write/write-only transactions, create
-        multiple sessions. Note that standalone reads and queries use a
-        transaction internally, and count toward the one transaction
-        limit.
-
-        Active sessions use additional server resources, so it's a good
-        idea to delete idle and unneeded sessions. Aside from explicit
-        deletes, Cloud Spanner can delete sessions when no operations
-        are sent for more than an hour. If a session is deleted,
-        requests to it return ``NOT_FOUND``.
-
-        Idle sessions can be kept alive by sending a trivial SQL query
-        periodically, for example, ``"SELECT 1"``.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_create_session():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.CreateSessionRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                response = await client.create_session(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.CreateSessionRequest, dict]]):
-                The request object. The request for
-                [CreateSession][google.spanner.v1.Spanner.CreateSession].
-            database (:class:`str`):
-                Required. The database in which the
-                new session is created.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.Session:
-                A session in the Cloud Spanner API.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.CreateSessionRequest):
-            request = spanner.CreateSessionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.create_session
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def batch_create_sessions(
-        self,
-        request: Optional[Union[spanner.BatchCreateSessionsRequest, dict]] = None,
-        *,
-        database: Optional[str] = None,
-        session_count: Optional[int] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.BatchCreateSessionsResponse:
-        r"""Creates multiple new sessions.
-
-        This API can be used to initialize a session cache on
-        the clients. See https://goo.gl/TgSFN2 for best
-        practices on session cache management.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_batch_create_sessions():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.BatchCreateSessionsRequest(
-                    database="database_value",
-                    session_count=1420,
-                )
-
-                # Make the request
-                response = await client.batch_create_sessions(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.BatchCreateSessionsRequest, dict]]):
-                The request object. The request for
-                [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-            database (:class:`str`):
-                Required. The database in which the
-                new sessions are created.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            session_count (:class:`int`):
-                Required. The number of sessions to be created in this
-                batch call. At least one session is created. The API can
-                return fewer than the requested number of sessions. If a
-                specific number of sessions are desired, the client can
-                make additional calls to ``BatchCreateSessions``
-                (adjusting
-                [session_count][google.spanner.v1.BatchCreateSessionsRequest.session_count]
-                as necessary).
-
-                This corresponds to the ``session_count`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.BatchCreateSessionsResponse:
-                The response for
-                   [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, session_count]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.BatchCreateSessionsRequest):
-            request = spanner.BatchCreateSessionsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-        if session_count is not None:
-            request.session_count = session_count
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.batch_create_sessions
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def get_session(
-        self,
-        request: Optional[Union[spanner.GetSessionRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.Session:
-        r"""Gets a session. Returns ``NOT_FOUND`` if the session doesn't
-        exist. This is mainly useful for determining whether a session
-        is still alive.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_get_session():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.GetSessionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = await client.get_session(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.GetSessionRequest, dict]]):
-                The request object. The request for
-                [GetSession][google.spanner.v1.Spanner.GetSession].
-            name (:class:`str`):
-                Required. The name of the session to
-                retrieve.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.Session:
-                A session in the Cloud Spanner API.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.GetSessionRequest):
-            request = spanner.GetSessionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.get_session
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def list_sessions(
-        self,
-        request: Optional[Union[spanner.ListSessionsRequest, dict]] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListSessionsAsyncPager:
-        r"""Lists all sessions in a given database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_list_sessions():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ListSessionsRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                page_result = client.list_sessions(request=request)
-
-                # Handle the response
-                async for response in page_result:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.ListSessionsRequest, dict]]):
-                The request object. The request for
-                [ListSessions][google.spanner.v1.Spanner.ListSessions].
-            database (:class:`str`):
-                Required. The database in which to
-                list sessions.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.services.spanner.pagers.ListSessionsAsyncPager:
-                The response for
-                [ListSessions][google.spanner.v1.Spanner.ListSessions].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ListSessionsRequest):
-            request = spanner.ListSessionsRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if database is not None:
-            request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.list_sessions
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__aiter__` convenience method.
-        response = pagers.ListSessionsAsyncPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def delete_session(
-        self,
-        request: Optional[Union[spanner.DeleteSessionRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Ends a session, releasing server resources associated
-        with it. This asynchronously triggers the cancellation
-        of any operations that are running with this session.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_delete_session():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.DeleteSessionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                await client.delete_session(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.DeleteSessionRequest, dict]]):
-                The request object. The request for
-                [DeleteSession][google.spanner.v1.Spanner.DeleteSession].
-            name (:class:`str`):
-                Required. The name of the session to
-                delete.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.DeleteSessionRequest):
-            request = spanner.DeleteSessionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if name is not None:
-            request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.delete_session
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def execute_sql(
-        self,
-        request: Optional[Union[spanner.ExecuteSqlRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> result_set.ResultSet:
-        r"""Executes an SQL statement, returning all results in a single
-        reply. This method can't be used to return a result set larger
-        than 10 MiB; if the query yields more data than that, the query
-        fails with a ``FAILED_PRECONDITION`` error.
-
-        Operations inside read-write transactions might return
-        ``ABORTED``. If this occurs, the application should restart the
-        transaction from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be fetched in streaming fashion by
-        calling
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        instead.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_execute_sql():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ExecuteSqlRequest(
-                    session="session_value",
-                    sql="sql_value",
-                )
-
-                # Make the request
-                response = await client.execute_sql(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.ExecuteSqlRequest, dict]]):
-                The request object. The request for
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-                [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.ResultSet:
-                Results from [Read][google.spanner.v1.Spanner.Read] or
-                   [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ExecuteSqlRequest):
-            request = spanner.ExecuteSqlRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.execute_sql
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def execute_streaming_sql(
-        self,
-        request: Optional[Union[spanner.ExecuteSqlRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> Awaitable[AsyncIterable[result_set.PartialResultSet]]:
-        r"""Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except
-        returns the result set as a stream. Unlike
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there is no
-        limit on the size of the returned result set. However, no
-        individual row in the result set can exceed 100 MiB, and no
-        column value can exceed 10 MiB.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_execute_streaming_sql():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ExecuteSqlRequest(
-                    session="session_value",
-                    sql="sql_value",
-                )
-
-                # Make the request
-                stream = await client.execute_streaming_sql(request=request)
-
-                # Handle the response
-                async for response in stream:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.ExecuteSqlRequest, dict]]):
-                The request object. The request for
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-                [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            AsyncIterable[google.cloud.spanner_v1.types.PartialResultSet]:
-                Partial results from a streaming read
-                or SQL query. Streaming reads and SQL
-                queries better tolerate large result
-                sets, large rows, and large values, but
-                are a little trickier to consume.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ExecuteSqlRequest):
-            request = spanner.ExecuteSqlRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.execute_streaming_sql
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def execute_batch_dml(
-        self,
-        request: Optional[Union[spanner.ExecuteBatchDmlRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.ExecuteBatchDmlResponse:
-        r"""Executes a batch of SQL DML statements. This method allows many
-        statements to be run with lower latency than submitting them
-        sequentially with
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        Statements are executed in sequential order. A request can
-        succeed even if a statement fails. The
-        [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status]
-        field in the response provides information about the statement
-        that failed. Clients must inspect this field to determine
-        whether an error occurred.
-
-        Execution stops after the first failed statement; the remaining
-        statements are not executed.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_execute_batch_dml():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                statements = spanner_v1.Statement()
-                statements.sql = "sql_value"
-
-                request = spanner_v1.ExecuteBatchDmlRequest(
-                    session="session_value",
-                    statements=statements,
-                    seqno=550,
-                )
-
-                # Make the request
-                response = await client.execute_batch_dml(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.ExecuteBatchDmlRequest, dict]]):
-                The request object. The request for
-                [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.ExecuteBatchDmlResponse:
-                The response for
-                   [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-                   Contains a list of
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   one for each DML statement that has successfully
-                   executed, in the same order as the statements in the
-                   request. If a statement fails, the status in the
-                   response body identifies the cause of the failure.
-
-                   To check for DML statements that failed, use the
-                   following approach:
-
-                   1. Check the status in the response message. The
-                   [google.rpc.Code][google.rpc.Code] enum value OK
-                   indicates that all statements were executed
-                   successfully. 2. If the status was not OK, check the
-                   number of result sets in the response. If the
-                   response contains N
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   then statement N+1 in the request failed.
-
-                   Example 1:
-
-                   - Request: 5 DML statements, all executed
-                     successfully.
-
-                   \* Response: 5
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   with the status OK.
-
-                   Example 2:
-
-                   - Request: 5 DML statements. The third statement has
-                     a syntax error.
-
-                   \* Response: 2
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   and a syntax error (INVALID_ARGUMENT) status. The
-                   number of [ResultSet][google.spanner.v1.ResultSet]
-                   messages indicates that the third statement failed,
-                   and the fourth and fifth statements were not
-                   executed.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ExecuteBatchDmlRequest):
-            request = spanner.ExecuteBatchDmlRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.execute_batch_dml
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def read(
-        self,
-        request: Optional[Union[spanner.ReadRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> result_set.ResultSet:
-        r"""Reads rows from the database using key lookups and scans, as a
-        simple key/value style alternative to
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method
-        can't be used to return a result set larger than 10 MiB; if the
-        read matches more data than that, the read fails with a
-        ``FAILED_PRECONDITION`` error.
-
-        Reads inside read-write transactions might return ``ABORTED``.
-        If this occurs, the application should restart the transaction
-        from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be yielded in streaming fashion by
-        calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead]
-        instead.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_read():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ReadRequest(
-                    session="session_value",
-                    table="table_value",
-                    columns=['columns_value1', 'columns_value2'],
-                )
-
-                # Make the request
-                response = await client.read(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.ReadRequest, dict]]):
-                The request object. The request for [Read][google.spanner.v1.Spanner.Read]
-                and
-                [StreamingRead][google.spanner.v1.Spanner.StreamingRead].
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.ResultSet:
-                Results from [Read][google.spanner.v1.Spanner.Read] or
-                   [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ReadRequest):
-            request = spanner.ReadRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[self._client._transport.read]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def streaming_read(
-        self,
-        request: Optional[Union[spanner.ReadRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> Awaitable[AsyncIterable[result_set.PartialResultSet]]:
-        r"""Like [Read][google.spanner.v1.Spanner.Read], except returns the
-        result set as a stream. Unlike
-        [Read][google.spanner.v1.Spanner.Read], there is no limit on the
-        size of the returned result set. However, no individual row in
-        the result set can exceed 100 MiB, and no column value can
-        exceed 10 MiB.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_streaming_read():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ReadRequest(
-                    session="session_value",
-                    table="table_value",
-                    columns=['columns_value1', 'columns_value2'],
-                )
-
-                # Make the request
-                stream = await client.streaming_read(request=request)
-
-                # Handle the response
-                async for response in stream:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.ReadRequest, dict]]):
-                The request object. The request for [Read][google.spanner.v1.Spanner.Read]
-                and
-                [StreamingRead][google.spanner.v1.Spanner.StreamingRead].
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            AsyncIterable[google.cloud.spanner_v1.types.PartialResultSet]:
-                Partial results from a streaming read
-                or SQL query. Streaming reads and SQL
-                queries better tolerate large result
-                sets, large rows, and large values, but
-                are a little trickier to consume.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ReadRequest):
-            request = spanner.ReadRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.streaming_read
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def begin_transaction(
-        self,
-        request: Optional[Union[spanner.BeginTransactionRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        options: Optional[transaction.TransactionOptions] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> transaction.Transaction:
-        r"""Begins a new transaction. This step can often be skipped:
-        [Read][google.spanner.v1.Spanner.Read],
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-        [Commit][google.spanner.v1.Spanner.Commit] can begin a new
-        transaction as a side-effect.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_begin_transaction():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.BeginTransactionRequest(
-                    session="session_value",
-                )
-
-                # Make the request
-                response = await client.begin_transaction(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.BeginTransactionRequest, dict]]):
-                The request object. The request for
-                [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
-            session (:class:`str`):
-                Required. The session in which the
-                transaction runs.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            options (:class:`google.cloud.spanner_v1.types.TransactionOptions`):
-                Required. Options for the new
-                transaction.
-
-                This corresponds to the ``options`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.Transaction:
-                A transaction.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, options]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.BeginTransactionRequest):
-            request = spanner.BeginTransactionRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if session is not None:
-            request.session = session
-        if options is not None:
-            request.options = options
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.begin_transaction
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def commit(
-        self,
-        request: Optional[Union[spanner.CommitRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        transaction_id: Optional[bytes] = None,
-        mutations: Optional[MutableSequence[mutation.Mutation]] = None,
-        single_use_transaction: Optional[transaction.TransactionOptions] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> commit_response.CommitResponse:
-        r"""Commits a transaction. The request includes the mutations to be
-        applied to rows in the database.
-
-        ``Commit`` might return an ``ABORTED`` error. This can occur at
-        any time; commonly, the cause is conflicts with concurrent
-        transactions. However, it can also happen for a variety of other
-        reasons. If ``Commit`` returns ``ABORTED``, the caller should
-        retry the transaction from the beginning, reusing the same
-        session.
-
-        On very rare occasions, ``Commit`` might return ``UNKNOWN``.
-        This can happen, for example, if the client job experiences a 1+
-        hour networking failure. At that point, Cloud Spanner has lost
-        track of the transaction outcome and we recommend that you
-        perform another read from the database to see the state of
-        things as they are now.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_commit():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.CommitRequest(
-                    transaction_id=b'transaction_id_blob',
-                    session="session_value",
-                )
-
-                # Make the request
-                response = await client.commit(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.CommitRequest, dict]]):
-                The request object. The request for
-                [Commit][google.spanner.v1.Spanner.Commit].
-            session (:class:`str`):
-                Required. The session in which the
-                transaction to be committed is running.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            transaction_id (:class:`bytes`):
-                Commit a previously-started
-                transaction.
-
-                This corresponds to the ``transaction_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            mutations (:class:`MutableSequence[google.cloud.spanner_v1.types.Mutation]`):
-                The mutations to be executed when
-                this transaction commits. All mutations
-                are applied atomically, in the order
-                they appear in this list.
-
-                This corresponds to the ``mutations`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            single_use_transaction (:class:`google.cloud.spanner_v1.types.TransactionOptions`):
-                Execute mutations in a temporary transaction. Note that
-                unlike commit of a previously-started transaction,
-                commit with a temporary transaction is non-idempotent.
-                That is, if the ``CommitRequest`` is sent to Cloud
-                Spanner more than once (for instance, due to retries in
-                the application, or in the transport library), it's
-                possible that the mutations are executed more than once.
-                If this is undesirable, use
-                [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction]
-                and [Commit][google.spanner.v1.Spanner.Commit] instead.
-
-                This corresponds to the ``single_use_transaction`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.CommitResponse:
-                The response for
-                [Commit][google.spanner.v1.Spanner.Commit].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, transaction_id, mutations, single_use_transaction]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.CommitRequest):
-            request = spanner.CommitRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if session is not None:
-            request.session = session
-        if transaction_id is not None:
-            request.transaction_id = transaction_id
-        if single_use_transaction is not None:
-            request.single_use_transaction = single_use_transaction
-        if mutations:
-            request.mutations.extend(mutations)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[self._client._transport.commit]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def rollback(
-        self,
-        request: Optional[Union[spanner.RollbackRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        transaction_id: Optional[bytes] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Rolls back a transaction, releasing any locks it holds. It's a
-        good idea to call this for any transaction that includes one or
-        more [Read][google.spanner.v1.Spanner.Read] or
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and
-        ultimately decides not to commit.
-
-        ``Rollback`` returns ``OK`` if it successfully aborts the
-        transaction, the transaction was already aborted, or the
-        transaction isn't found. ``Rollback`` never returns ``ABORTED``.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_rollback():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.RollbackRequest(
-                    session="session_value",
-                    transaction_id=b'transaction_id_blob',
-                )
-
-                # Make the request
-                await client.rollback(request=request)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.RollbackRequest, dict]]):
-                The request object. The request for
-                [Rollback][google.spanner.v1.Spanner.Rollback].
-            session (:class:`str`):
-                Required. The session in which the
-                transaction to roll back is running.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            transaction_id (:class:`bytes`):
-                Required. The transaction to roll
-                back.
-
-                This corresponds to the ``transaction_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, transaction_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.RollbackRequest):
-            request = spanner.RollbackRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if session is not None:
-            request.session = session
-        if transaction_id is not None:
-            request.transaction_id = transaction_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[self._client._transport.rollback]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    async def partition_query(
-        self,
-        request: Optional[Union[spanner.PartitionQueryRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.PartitionResponse:
-        r"""Creates a set of partition tokens that can be used to execute a
-        query operation in parallel. Each of the returned partition
-        tokens can be used by
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        to specify a subset of the query result to read. The same
-        session and read-only transaction must be used by the
-        ``PartitionQueryRequest`` used to create the partition tokens
-        and the ``ExecuteSqlRequests`` that use the partition tokens.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the query, and the whole operation must be restarted
-        from the beginning.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_partition_query():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.PartitionQueryRequest(
-                    session="session_value",
-                    sql="sql_value",
-                )
-
-                # Make the request
-                response = await client.partition_query(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.PartitionQueryRequest, dict]]):
-                The request object. The request for
-                [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.PartitionResponse:
-                The response for [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-                   or
-                   [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.PartitionQueryRequest):
-            request = spanner.PartitionQueryRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.partition_query
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def partition_read(
-        self,
-        request: Optional[Union[spanner.PartitionReadRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.PartitionResponse:
-        r"""Creates a set of partition tokens that can be used to execute a
-        read operation in parallel. Each of the returned partition
-        tokens can be used by
-        [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to
-        specify a subset of the read result to read. The same session
-        and read-only transaction must be used by the
-        ``PartitionReadRequest`` used to create the partition tokens and
-        the ``ReadRequests`` that use the partition tokens. There are no
-        ordering guarantees on rows returned among the returned
-        partition tokens, or even within each individual
-        ``StreamingRead`` call issued with a ``partition_token``.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the read, and the whole operation must be restarted
-        from the beginning.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_partition_read():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.PartitionReadRequest(
-                    session="session_value",
-                    table="table_value",
-                )
-
-                # Make the request
-                response = await client.partition_read(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.PartitionReadRequest, dict]]):
-                The request object. The request for
-                [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.PartitionResponse:
-                The response for [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-                   or
-                   [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.PartitionReadRequest):
-            request = spanner.PartitionReadRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.partition_read
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = await rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def batch_write(
-        self,
-        request: Optional[Union[spanner.BatchWriteRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        mutation_groups: Optional[
-            MutableSequence[spanner.BatchWriteRequest.MutationGroup]
-        ] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> Awaitable[AsyncIterable[spanner.BatchWriteResponse]]:
-        r"""Batches the supplied mutation groups in a collection of
-        efficient transactions. All mutations in a group are committed
-        atomically. However, mutations across groups can be committed
-        non-atomically in an unspecified order and thus, they must be
-        independent of each other. Partial failure is possible, that is,
-        some groups might have been committed successfully, while some
-        might have failed. The results of individual batches are
-        streamed into the response as the batches are applied.
-
-        ``BatchWrite`` requests are not replay protected, meaning that
-        each mutation group can be applied more than once. Replays of
-        non-idempotent mutations can have undesirable effects. For
-        example, replays of an insert mutation can produce an already
-        exists error or if you use generated or commit timestamp-based
-        keys, it can result in additional rows being added to the
-        mutation's table. We recommend structuring your mutation groups
-        to be idempotent to avoid this issue.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            async def sample_batch_write():
-                # Create a client
-                client = spanner_v1.SpannerAsyncClient()
-
-                # Initialize request argument(s)
-                mutation_groups = spanner_v1.MutationGroup()
-                mutation_groups.mutations.insert.table = "table_value"
-
-                request = spanner_v1.BatchWriteRequest(
-                    session="session_value",
-                    mutation_groups=mutation_groups,
-                )
-
-                # Make the request
-                stream = await client.batch_write(request=request)
-
-                # Handle the response
-                async for response in stream:
-                    print(response)
-
-        Args:
-            request (Optional[Union[google.cloud.spanner_v1.types.BatchWriteRequest, dict]]):
-                The request object. The request for
-                [BatchWrite][google.spanner.v1.Spanner.BatchWrite].
-            session (:class:`str`):
-                Required. The session in which the
-                batch request is to be run.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            mutation_groups (:class:`MutableSequence[google.cloud.spanner_v1.types.BatchWriteRequest.MutationGroup]`):
-                Required. The groups of mutations to
-                be applied.
-
-                This corresponds to the ``mutation_groups`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry_async.AsyncRetry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            AsyncIterable[google.cloud.spanner_v1.types.BatchWriteResponse]:
-                The result of applying a batch of
-                mutations.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, mutation_groups]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.BatchWriteRequest):
-            request = spanner.BatchWriteRequest(request)
-
-        # If we have keyword arguments corresponding to fields on the
-        # request, apply these.
-        if session is not None:
-            request.session = session
-        if mutation_groups:
-            request.mutation_groups.extend(mutation_groups)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._client._transport._wrapped_methods[
-            self._client._transport.batch_write
-        ]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._client._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    async def __aenter__(self) -> "SpannerAsyncClient":
-        return self
-
-    async def __aexit__(self, exc_type, exc, tb):
-        await self.transport.close()
-
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-__all__ = ("SpannerAsyncClient",)
diff --git a/google/cloud/spanner_v1/services/spanner/client.py b/google/cloud/spanner_v1/services/spanner/client.py
deleted file mode 100644
index bddda3708c..0000000000
--- a/google/cloud/spanner_v1/services/spanner/client.py
+++ /dev/null
@@ -1,2651 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-from http import HTTPStatus
-import json
-import logging as std_logging
-import os
-import re
-from typing import (
-    Callable,
-    Dict,
-    Iterable,
-    Mapping,
-    MutableMapping,
-    MutableSequence,
-    Optional,
-    Sequence,
-    Tuple,
-    Type,
-    Union,
-    cast,
-)
-import warnings
-
-from google.api_core import client_options as client_options_lib
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1
-from google.api_core import retry as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.exceptions import MutualTLSChannelError  # type: ignore
-from google.auth.transport import mtls  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-
-from google.cloud.spanner_v1 import gapic_version as package_version
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.rpc import status_pb2  # type: ignore
-
-from google.cloud.spanner_v1.metrics.metrics_interceptor import MetricsInterceptor
-from google.cloud.spanner_v1.services.spanner import pagers
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    location,
-    mutation,
-    result_set,
-    spanner,
-    transaction,
-)
-
-from .transports.base import DEFAULT_CLIENT_INFO, SpannerTransport
-from .transports.grpc import SpannerGrpcTransport
-from .transports.grpc_asyncio import SpannerGrpcAsyncIOTransport
-from .transports.rest import SpannerRestTransport
-
-
-class SpannerClientMeta(type):
-    """Metaclass for the Spanner client.
-
-    This provides class-level methods for building and retrieving
-    support objects (e.g. transport) without polluting the client instance
-    objects.
-    """
-
-    _transport_registry = OrderedDict()  # type: Dict[str, Type[SpannerTransport]]
-    _transport_registry["grpc"] = SpannerGrpcTransport
-    _transport_registry["grpc_asyncio"] = SpannerGrpcAsyncIOTransport
-    _transport_registry["rest"] = SpannerRestTransport
-
-    def get_transport_class(
-        cls,
-        label: Optional[str] = None,
-    ) -> Type[SpannerTransport]:
-        """Returns an appropriate transport class.
-
-        Args:
-            label: The name of the desired transport. If none is
-                provided, then the first transport in the registry is used.
-
-        Returns:
-            The transport class to use.
-        """
-        # If a specific transport is requested, return that one.
-        if label:
-            return cls._transport_registry[label]
-
-        # No transport is requested; return the default (that is, the first one
-        # in the dictionary).
-        return next(iter(cls._transport_registry.values()))
-
-
-class SpannerClient(metaclass=SpannerClientMeta):
-    """Cloud Spanner API
-
-    The Cloud Spanner API can be used to manage sessions and execute
-    transactions on data stored in Cloud Spanner databases.
-    """
-
-    @staticmethod
-    def _get_default_mtls_endpoint(api_endpoint):
-        """Converts api endpoint to mTLS endpoint.
-
-        Convert "*.sandbox.googleapis.com" and "*.googleapis.com" to
-        "*.mtls.sandbox.googleapis.com" and "*.mtls.googleapis.com" respectively.
-        Args:
-            api_endpoint (Optional[str]): the api endpoint to convert.
-        Returns:
-            str: converted mTLS api endpoint.
-        """
-        if not api_endpoint:
-            return api_endpoint
-
-        mtls_endpoint_re = re.compile(
-            r"(?P<name>[^.]+)(?P<mtls>\.mtls)?(?P<sandbox>\.sandbox)?(?P<googledomain>\.googleapis\.com)?"
-        )
-
-        m = mtls_endpoint_re.match(api_endpoint)
-        name, mtls, sandbox, googledomain = m.groups()
-        if mtls or not googledomain:
-            return api_endpoint
-
-        if sandbox:
-            return api_endpoint.replace(
-                "sandbox.googleapis.com", "mtls.sandbox.googleapis.com"
-            )
-
-        return api_endpoint.replace(".googleapis.com", ".mtls.googleapis.com")
-
-    # Note: DEFAULT_ENDPOINT is deprecated. Use _DEFAULT_ENDPOINT_TEMPLATE instead.
-    DEFAULT_ENDPOINT = "spanner.googleapis.com"
-    DEFAULT_MTLS_ENDPOINT = _get_default_mtls_endpoint.__func__(  # type: ignore
-        DEFAULT_ENDPOINT
-    )
-
-    _DEFAULT_ENDPOINT_TEMPLATE = "spanner.{UNIVERSE_DOMAIN}"
-    _DEFAULT_UNIVERSE = "googleapis.com"
-
-    @staticmethod
-    def _use_client_cert_effective():
-        """Returns whether client certificate should be used for mTLS if the
-        google-auth version supports should_use_client_cert automatic mTLS enablement.
-
-        Alternatively, read from the GOOGLE_API_USE_CLIENT_CERTIFICATE env var.
-
-        Returns:
-            bool: whether client certificate should be used for mTLS
-        Raises:
-            ValueError: (If using a version of google-auth without should_use_client_cert and
-            GOOGLE_API_USE_CLIENT_CERTIFICATE is set to an unexpected value.)
-        """
-        # check if google-auth version supports should_use_client_cert for automatic mTLS enablement
-        if hasattr(mtls, "should_use_client_cert"):  # pragma: NO COVER
-            return mtls.should_use_client_cert()
-        else:  # pragma: NO COVER
-            # if unsupported, fallback to reading from env var
-            use_client_cert_str = os.getenv(
-                "GOOGLE_API_USE_CLIENT_CERTIFICATE", "false"
-            ).lower()
-            if use_client_cert_str not in ("true", "false"):
-                raise ValueError(
-                    "Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be"
-                    " either `true` or `false`"
-                )
-            return use_client_cert_str == "true"
-
-    @classmethod
-    def from_service_account_info(cls, info: dict, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            info.
-
-        Args:
-            info (dict): The service account private key info.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            SpannerClient: The constructed client.
-        """
-        credentials = service_account.Credentials.from_service_account_info(info)
-        kwargs["credentials"] = credentials
-        return cls(*args, **kwargs)
-
-    @classmethod
-    def from_service_account_file(cls, filename: str, *args, **kwargs):
-        """Creates an instance of this client using the provided credentials
-            file.
-
-        Args:
-            filename (str): The path to the service account private key json
-                file.
-            args: Additional arguments to pass to the constructor.
-            kwargs: Additional arguments to pass to the constructor.
-
-        Returns:
-            SpannerClient: The constructed client.
-        """
-        credentials = service_account.Credentials.from_service_account_file(filename)
-        kwargs["credentials"] = credentials
-        return cls(*args, **kwargs)
-
-    from_service_account_json = from_service_account_file
-
-    @property
-    def transport(self) -> SpannerTransport:
-        """Returns the transport used by the client instance.
-
-        Returns:
-            SpannerTransport: The transport used by the client
-                instance.
-        """
-        return self._transport
-
-    @staticmethod
-    def database_path(
-        project: str,
-        instance: str,
-        database: str,
-    ) -> str:
-        """Returns a fully-qualified database string."""
-        return "projects/{project}/instances/{instance}/databases/{database}".format(
-            project=project,
-            instance=instance,
-            database=database,
-        )
-
-    @staticmethod
-    def parse_database_path(path: str) -> Dict[str, str]:
-        """Parses a database path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/databases/(?P<database>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def session_path(
-        project: str,
-        instance: str,
-        database: str,
-        session: str,
-    ) -> str:
-        """Returns a fully-qualified session string."""
-        return "projects/{project}/instances/{instance}/databases/{database}/sessions/{session}".format(
-            project=project,
-            instance=instance,
-            database=database,
-            session=session,
-        )
-
-    @staticmethod
-    def parse_session_path(path: str) -> Dict[str, str]:
-        """Parses a session path into its component segments."""
-        m = re.match(
-            r"^projects/(?P<project>.+?)/instances/(?P<instance>.+?)/databases/(?P<database>.+?)/sessions/(?P<session>.+?)$",
-            path,
-        )
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_billing_account_path(
-        billing_account: str,
-    ) -> str:
-        """Returns a fully-qualified billing_account string."""
-        return "billingAccounts/{billing_account}".format(
-            billing_account=billing_account,
-        )
-
-    @staticmethod
-    def parse_common_billing_account_path(path: str) -> Dict[str, str]:
-        """Parse a billing_account path into its component segments."""
-        m = re.match(r"^billingAccounts/(?P<billing_account>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_folder_path(
-        folder: str,
-    ) -> str:
-        """Returns a fully-qualified folder string."""
-        return "folders/{folder}".format(
-            folder=folder,
-        )
-
-    @staticmethod
-    def parse_common_folder_path(path: str) -> Dict[str, str]:
-        """Parse a folder path into its component segments."""
-        m = re.match(r"^folders/(?P<folder>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_organization_path(
-        organization: str,
-    ) -> str:
-        """Returns a fully-qualified organization string."""
-        return "organizations/{organization}".format(
-            organization=organization,
-        )
-
-    @staticmethod
-    def parse_common_organization_path(path: str) -> Dict[str, str]:
-        """Parse a organization path into its component segments."""
-        m = re.match(r"^organizations/(?P<organization>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_project_path(
-        project: str,
-    ) -> str:
-        """Returns a fully-qualified project string."""
-        return "projects/{project}".format(
-            project=project,
-        )
-
-    @staticmethod
-    def parse_common_project_path(path: str) -> Dict[str, str]:
-        """Parse a project path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @staticmethod
-    def common_location_path(
-        project: str,
-        location: str,
-    ) -> str:
-        """Returns a fully-qualified location string."""
-        return "projects/{project}/locations/{location}".format(
-            project=project,
-            location=location,
-        )
-
-    @staticmethod
-    def parse_common_location_path(path: str) -> Dict[str, str]:
-        """Parse a location path into its component segments."""
-        m = re.match(r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)$", path)
-        return m.groupdict() if m else {}
-
-    @classmethod
-    def get_mtls_endpoint_and_cert_source(
-        cls, client_options: Optional[client_options_lib.ClientOptions] = None
-    ):
-        """Deprecated. Return the API endpoint and client cert source for mutual TLS.
-
-        The client cert source is determined in the following order:
-        (1) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not "true", the
-        client cert source is None.
-        (2) if `client_options.client_cert_source` is provided, use the provided one; if the
-        default client cert source exists, use the default one; otherwise the client cert
-        source is None.
-
-        The API endpoint is determined in the following order:
-        (1) if `client_options.api_endpoint` if provided, use the provided one.
-        (2) if `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is "always", use the
-        default mTLS endpoint; if the environment variable is "never", use the default API
-        endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise
-        use the default API endpoint.
-
-        More details can be found at https://google.aip.dev/auth/4114.
-
-        Args:
-            client_options (google.api_core.client_options.ClientOptions): Custom options for the
-                client. Only the `api_endpoint` and `client_cert_source` properties may be used
-                in this method.
-
-        Returns:
-            Tuple[str, Callable[[], Tuple[bytes, bytes]]]: returns the API endpoint and the
-                client cert source to use.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If any errors happen.
-        """
-
-        warnings.warn(
-            "get_mtls_endpoint_and_cert_source is deprecated. Use the api_endpoint property instead.",
-            DeprecationWarning,
-        )
-        if client_options is None:
-            client_options = client_options_lib.ClientOptions()
-        use_client_cert = SpannerClient._use_client_cert_effective()
-        use_mtls_endpoint = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto")
-        if use_mtls_endpoint not in ("auto", "never", "always"):
-            raise MutualTLSChannelError(
-                "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-            )
-
-        # Figure out the client cert source to use.
-        client_cert_source = None
-        if use_client_cert:
-            if client_options.client_cert_source:
-                client_cert_source = client_options.client_cert_source
-            elif mtls.has_default_client_cert_source():
-                client_cert_source = mtls.default_client_cert_source()
-
-        # Figure out which api endpoint to use.
-        if client_options.api_endpoint is not None:
-            api_endpoint = client_options.api_endpoint
-        elif use_mtls_endpoint == "always" or (
-            use_mtls_endpoint == "auto" and client_cert_source
-        ):
-            api_endpoint = cls.DEFAULT_MTLS_ENDPOINT
-        else:
-            api_endpoint = cls.DEFAULT_ENDPOINT
-
-        return api_endpoint, client_cert_source
-
-    @staticmethod
-    def _read_environment_variables():
-        """Returns the environment variables used by the client.
-
-        Returns:
-            Tuple[bool, str, str]: returns the GOOGLE_API_USE_CLIENT_CERTIFICATE,
-            GOOGLE_API_USE_MTLS_ENDPOINT, and GOOGLE_CLOUD_UNIVERSE_DOMAIN environment variables.
-
-        Raises:
-            ValueError: If GOOGLE_API_USE_CLIENT_CERTIFICATE is not
-                any of ["true", "false"].
-            google.auth.exceptions.MutualTLSChannelError: If GOOGLE_API_USE_MTLS_ENDPOINT
-                is not any of ["auto", "never", "always"].
-        """
-        use_client_cert = SpannerClient._use_client_cert_effective()
-        use_mtls_endpoint = os.getenv("GOOGLE_API_USE_MTLS_ENDPOINT", "auto").lower()
-        universe_domain_env = os.getenv("GOOGLE_CLOUD_UNIVERSE_DOMAIN")
-        if use_mtls_endpoint not in ("auto", "never", "always"):
-            raise MutualTLSChannelError(
-                "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-            )
-        return use_client_cert, use_mtls_endpoint, universe_domain_env
-
-    @staticmethod
-    def _get_client_cert_source(provided_cert_source, use_cert_flag):
-        """Return the client cert source to be used by the client.
-
-        Args:
-            provided_cert_source (bytes): The client certificate source provided.
-            use_cert_flag (bool): A flag indicating whether to use the client certificate.
-
-        Returns:
-            bytes or None: The client cert source to be used by the client.
-        """
-        client_cert_source = None
-        if use_cert_flag:
-            if provided_cert_source:
-                client_cert_source = provided_cert_source
-            elif mtls.has_default_client_cert_source():
-                client_cert_source = mtls.default_client_cert_source()
-        return client_cert_source
-
-    @staticmethod
-    def _get_api_endpoint(
-        api_override, client_cert_source, universe_domain, use_mtls_endpoint
-    ):
-        """Return the API endpoint used by the client.
-
-        Args:
-            api_override (str): The API endpoint override. If specified, this is always
-                the return value of this function and the other arguments are not used.
-            client_cert_source (bytes): The client certificate source used by the client.
-            universe_domain (str): The universe domain used by the client.
-            use_mtls_endpoint (str): How to use the mTLS endpoint, which depends also on the other parameters.
-                Possible values are "always", "auto", or "never".
-
-        Returns:
-            str: The API endpoint to be used by the client.
-        """
-        if api_override is not None:
-            api_endpoint = api_override
-        elif use_mtls_endpoint == "always" or (
-            use_mtls_endpoint == "auto" and client_cert_source
-        ):
-            _default_universe = SpannerClient._DEFAULT_UNIVERSE
-            if universe_domain != _default_universe:
-                raise MutualTLSChannelError(
-                    f"mTLS is not supported in any universe other than {_default_universe}."
-                )
-            api_endpoint = SpannerClient.DEFAULT_MTLS_ENDPOINT
-        else:
-            api_endpoint = SpannerClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=universe_domain
-            )
-        return api_endpoint
-
-    @staticmethod
-    def _get_universe_domain(
-        client_universe_domain: Optional[str], universe_domain_env: Optional[str]
-    ) -> str:
-        """Return the universe domain used by the client.
-
-        Args:
-            client_universe_domain (Optional[str]): The universe domain configured via the client options.
-            universe_domain_env (Optional[str]): The universe domain configured via the "GOOGLE_CLOUD_UNIVERSE_DOMAIN" environment variable.
-
-        Returns:
-            str: The universe domain to be used by the client.
-
-        Raises:
-            ValueError: If the universe domain is an empty string.
-        """
-        universe_domain = SpannerClient._DEFAULT_UNIVERSE
-        if client_universe_domain is not None:
-            universe_domain = client_universe_domain
-        elif universe_domain_env is not None:
-            universe_domain = universe_domain_env
-        if len(universe_domain.strip()) == 0:
-            raise ValueError("Universe Domain cannot be an empty string.")
-        return universe_domain
-
-    def _validate_universe_domain(self):
-        """Validates client's and credentials' universe domains are consistent.
-
-        Returns:
-            bool: True iff the configured universe domain is valid.
-
-        Raises:
-            ValueError: If the configured universe domain is not valid.
-        """
-
-        # NOTE (b/349488459): universe validation is disabled until further notice.
-        return True
-
-    def _add_cred_info_for_auth_errors(
-        self, error: core_exceptions.GoogleAPICallError
-    ) -> None:
-        """Adds credential info string to error details for 401/403/404 errors.
-
-        Args:
-            error (google.api_core.exceptions.GoogleAPICallError): The error to add the cred info.
-        """
-        if error.code not in [
-            HTTPStatus.UNAUTHORIZED,
-            HTTPStatus.FORBIDDEN,
-            HTTPStatus.NOT_FOUND,
-        ]:
-            return
-
-        cred = self._transport._credentials
-
-        # get_cred_info is only available in google-auth>=2.35.0
-        if not hasattr(cred, "get_cred_info"):
-            return
-
-        # ignore the type check since pypy test fails when get_cred_info
-        # is not available
-        cred_info = cred.get_cred_info()  # type: ignore
-        if cred_info and hasattr(error._details, "append"):
-            error._details.append(json.dumps(cred_info))
-
-    @property
-    def api_endpoint(self):
-        """Return the API endpoint used by the client instance.
-
-        Returns:
-            str: The API endpoint used by the client instance.
-        """
-        return self._api_endpoint
-
-    @property
-    def universe_domain(self) -> str:
-        """Return the universe domain used by the client instance.
-
-        Returns:
-            str: The universe domain used by the client instance.
-        """
-        return self._universe_domain
-
-    def __init__(
-        self,
-        *,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        transport: Optional[
-            Union[str, SpannerTransport, Callable[..., SpannerTransport]]
-        ] = None,
-        client_options: Optional[Union[client_options_lib.ClientOptions, dict]] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-    ) -> None:
-        """Instantiates the spanner client.
-
-        Args:
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            transport (Optional[Union[str,SpannerTransport,Callable[..., SpannerTransport]]]):
-                The transport to use, or a Callable that constructs and returns a new transport.
-                If a Callable is given, it will be called with the same set of initialization
-                arguments as used in the SpannerTransport constructor.
-                If set to None, a transport is chosen automatically.
-            client_options (Optional[Union[google.api_core.client_options.ClientOptions, dict]]):
-                Custom options for the client.
-
-                1. The ``api_endpoint`` property can be used to override the
-                default endpoint provided by the client when ``transport`` is
-                not explicitly provided. Only if this property is not set and
-                ``transport`` was not explicitly provided, the endpoint is
-                determined by the GOOGLE_API_USE_MTLS_ENDPOINT environment
-                variable, which have one of the following values:
-                "always" (always use the default mTLS endpoint), "never" (always
-                use the default regular endpoint) and "auto" (auto-switch to the
-                default mTLS endpoint if client certificate is present; this is
-                the default value).
-
-                2. If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
-                is "true", then the ``client_cert_source`` property can be used
-                to provide a client certificate for mTLS transport. If
-                not provided, the default SSL client certificate will be used if
-                present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
-                set, no client certificate will be used.
-
-                3. The ``universe_domain`` property can be used to override the
-                default "googleapis.com" universe. Note that the ``api_endpoint``
-                property still takes precedence; and ``universe_domain`` is
-                currently not supported for mTLS.
-
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-
-        Raises:
-            google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
-                creation failed for any reason.
-        """
-        self._client_options = client_options
-        if isinstance(self._client_options, dict):
-            self._client_options = client_options_lib.from_dict(self._client_options)
-        if self._client_options is None:
-            self._client_options = client_options_lib.ClientOptions()
-        self._client_options = cast(
-            client_options_lib.ClientOptions, self._client_options
-        )
-
-        universe_domain_opt = getattr(self._client_options, "universe_domain", None)
-
-        (
-            self._use_client_cert,
-            self._use_mtls_endpoint,
-            self._universe_domain_env,
-        ) = SpannerClient._read_environment_variables()
-        self._client_cert_source = SpannerClient._get_client_cert_source(
-            self._client_options.client_cert_source, self._use_client_cert
-        )
-        self._universe_domain = SpannerClient._get_universe_domain(
-            universe_domain_opt, self._universe_domain_env
-        )
-        self._api_endpoint = None  # updated below, depending on `transport`
-
-        # Initialize the universe domain validation.
-        self._is_universe_domain_valid = False
-
-        if CLIENT_LOGGING_SUPPORTED:  # pragma: NO COVER
-            # Setup logging.
-            client_logging.initialize_logging()
-
-        api_key_value = getattr(self._client_options, "api_key", None)
-        if api_key_value and credentials:
-            raise ValueError(
-                "client_options.api_key and credentials are mutually exclusive"
-            )
-
-        # Save or instantiate the transport.
-        # Ordinarily, we provide the transport, but allowing a custom transport
-        # instance provides an extensibility point for unusual situations.
-        transport_provided = isinstance(transport, SpannerTransport)
-        if transport_provided:
-            # transport is a SpannerTransport instance.
-            if credentials or self._client_options.credentials_file or api_key_value:
-                raise ValueError(
-                    "When providing a transport instance, "
-                    "provide its credentials directly."
-                )
-            if self._client_options.scopes:
-                raise ValueError(
-                    "When providing a transport instance, provide its scopes "
-                    "directly."
-                )
-            self._transport = cast(SpannerTransport, transport)
-            self._api_endpoint = self._transport.host
-
-        self._api_endpoint = self._api_endpoint or SpannerClient._get_api_endpoint(
-            self._client_options.api_endpoint,
-            self._client_cert_source,
-            self._universe_domain,
-            self._use_mtls_endpoint,
-        )
-
-        if not transport_provided:
-            import google.auth._default  # type: ignore
-
-            if api_key_value and hasattr(
-                google.auth._default, "get_api_key_credentials"
-            ):
-                credentials = google.auth._default.get_api_key_credentials(
-                    api_key_value
-                )
-
-            transport_init: Union[
-                Type[SpannerTransport], Callable[..., SpannerTransport]
-            ] = (
-                SpannerClient.get_transport_class(transport)
-                if isinstance(transport, str) or transport is None
-                else cast(Callable[..., SpannerTransport], transport)
-            )
-            # initialize with the provided callable or the passed in class
-            self._transport = transport_init(
-                credentials=credentials,
-                credentials_file=self._client_options.credentials_file,
-                host=self._api_endpoint,
-                scopes=self._client_options.scopes,
-                client_cert_source_for_mtls=self._client_cert_source,
-                quota_project_id=self._client_options.quota_project_id,
-                client_info=client_info,
-                always_use_jwt_access=True,
-                api_audience=self._client_options.api_audience,
-                metrics_interceptor=MetricsInterceptor(),
-            )
-
-        if "async" not in str(self._transport):
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                std_logging.DEBUG
-            ):  # pragma: NO COVER
-                _LOGGER.debug(
-                    "Created client `google.spanner_v1.SpannerClient`.",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "universeDomain": getattr(
-                            self._transport._credentials, "universe_domain", ""
-                        ),
-                        "credentialsType": f"{type(self._transport._credentials).__module__}.{type(self._transport._credentials).__qualname__}",
-                        "credentialsInfo": getattr(
-                            self.transport._credentials, "get_cred_info", lambda: None
-                        )(),
-                    }
-                    if hasattr(self._transport, "_credentials")
-                    else {
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "credentialsType": None,
-                    },
-                )
-
-    def create_session(
-        self,
-        request: Optional[Union[spanner.CreateSessionRequest, dict]] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.Session:
-        r"""Creates a new session. A session can be used to perform
-        transactions that read and/or modify data in a Cloud Spanner
-        database. Sessions are meant to be reused for many consecutive
-        transactions.
-
-        Sessions can only execute one transaction at a time. To execute
-        multiple concurrent read-write/write-only transactions, create
-        multiple sessions. Note that standalone reads and queries use a
-        transaction internally, and count toward the one transaction
-        limit.
-
-        Active sessions use additional server resources, so it's a good
-        idea to delete idle and unneeded sessions. Aside from explicit
-        deletes, Cloud Spanner can delete sessions when no operations
-        are sent for more than an hour. If a session is deleted,
-        requests to it return ``NOT_FOUND``.
-
-        Idle sessions can be kept alive by sending a trivial SQL query
-        periodically, for example, ``"SELECT 1"``.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_create_session():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.CreateSessionRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                response = client.create_session(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.CreateSessionRequest, dict]):
-                The request object. The request for
-                [CreateSession][google.spanner.v1.Spanner.CreateSession].
-            database (str):
-                Required. The database in which the
-                new session is created.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.Session:
-                A session in the Cloud Spanner API.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.CreateSessionRequest):
-            request = spanner.CreateSessionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.create_session]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def batch_create_sessions(
-        self,
-        request: Optional[Union[spanner.BatchCreateSessionsRequest, dict]] = None,
-        *,
-        database: Optional[str] = None,
-        session_count: Optional[int] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.BatchCreateSessionsResponse:
-        r"""Creates multiple new sessions.
-
-        This API can be used to initialize a session cache on
-        the clients. See https://goo.gl/TgSFN2 for best
-        practices on session cache management.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_batch_create_sessions():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.BatchCreateSessionsRequest(
-                    database="database_value",
-                    session_count=1420,
-                )
-
-                # Make the request
-                response = client.batch_create_sessions(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.BatchCreateSessionsRequest, dict]):
-                The request object. The request for
-                [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-            database (str):
-                Required. The database in which the
-                new sessions are created.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            session_count (int):
-                Required. The number of sessions to be created in this
-                batch call. At least one session is created. The API can
-                return fewer than the requested number of sessions. If a
-                specific number of sessions are desired, the client can
-                make additional calls to ``BatchCreateSessions``
-                (adjusting
-                [session_count][google.spanner.v1.BatchCreateSessionsRequest.session_count]
-                as necessary).
-
-                This corresponds to the ``session_count`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.BatchCreateSessionsResponse:
-                The response for
-                   [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database, session_count]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.BatchCreateSessionsRequest):
-            request = spanner.BatchCreateSessionsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-            if session_count is not None:
-                request.session_count = session_count
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.batch_create_sessions]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def get_session(
-        self,
-        request: Optional[Union[spanner.GetSessionRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.Session:
-        r"""Gets a session. Returns ``NOT_FOUND`` if the session doesn't
-        exist. This is mainly useful for determining whether a session
-        is still alive.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_get_session():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.GetSessionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                response = client.get_session(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.GetSessionRequest, dict]):
-                The request object. The request for
-                [GetSession][google.spanner.v1.Spanner.GetSession].
-            name (str):
-                Required. The name of the session to
-                retrieve.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.Session:
-                A session in the Cloud Spanner API.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.GetSessionRequest):
-            request = spanner.GetSessionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.get_session]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def list_sessions(
-        self,
-        request: Optional[Union[spanner.ListSessionsRequest, dict]] = None,
-        *,
-        database: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> pagers.ListSessionsPager:
-        r"""Lists all sessions in a given database.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_list_sessions():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ListSessionsRequest(
-                    database="database_value",
-                )
-
-                # Make the request
-                page_result = client.list_sessions(request=request)
-
-                # Handle the response
-                for response in page_result:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.ListSessionsRequest, dict]):
-                The request object. The request for
-                [ListSessions][google.spanner.v1.Spanner.ListSessions].
-            database (str):
-                Required. The database in which to
-                list sessions.
-
-                This corresponds to the ``database`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.services.spanner.pagers.ListSessionsPager:
-                The response for
-                [ListSessions][google.spanner.v1.Spanner.ListSessions].
-
-                Iterating over this object will yield results and
-                resolve additional pages automatically.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [database]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ListSessionsRequest):
-            request = spanner.ListSessionsRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if database is not None:
-                request.database = database
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.list_sessions]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", request.database),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # This method is paged; wrap the response in a pager, which provides
-        # an `__iter__` convenience method.
-        response = pagers.ListSessionsPager(
-            method=rpc,
-            request=request,
-            response=response,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def delete_session(
-        self,
-        request: Optional[Union[spanner.DeleteSessionRequest, dict]] = None,
-        *,
-        name: Optional[str] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Ends a session, releasing server resources associated
-        with it. This asynchronously triggers the cancellation
-        of any operations that are running with this session.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_delete_session():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.DeleteSessionRequest(
-                    name="name_value",
-                )
-
-                # Make the request
-                client.delete_session(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.DeleteSessionRequest, dict]):
-                The request object. The request for
-                [DeleteSession][google.spanner.v1.Spanner.DeleteSession].
-            name (str):
-                Required. The name of the session to
-                delete.
-
-                This corresponds to the ``name`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [name]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.DeleteSessionRequest):
-            request = spanner.DeleteSessionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if name is not None:
-                request.name = name
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.delete_session]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("name", request.name),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def execute_sql(
-        self,
-        request: Optional[Union[spanner.ExecuteSqlRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> result_set.ResultSet:
-        r"""Executes an SQL statement, returning all results in a single
-        reply. This method can't be used to return a result set larger
-        than 10 MiB; if the query yields more data than that, the query
-        fails with a ``FAILED_PRECONDITION`` error.
-
-        Operations inside read-write transactions might return
-        ``ABORTED``. If this occurs, the application should restart the
-        transaction from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be fetched in streaming fashion by
-        calling
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        instead.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_execute_sql():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ExecuteSqlRequest(
-                    session="session_value",
-                    sql="sql_value",
-                )
-
-                # Make the request
-                response = client.execute_sql(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.ExecuteSqlRequest, dict]):
-                The request object. The request for
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-                [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.ResultSet:
-                Results from [Read][google.spanner.v1.Spanner.Read] or
-                   [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ExecuteSqlRequest):
-            request = spanner.ExecuteSqlRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.execute_sql]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def execute_streaming_sql(
-        self,
-        request: Optional[Union[spanner.ExecuteSqlRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> Iterable[result_set.PartialResultSet]:
-        r"""Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except
-        returns the result set as a stream. Unlike
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there is no
-        limit on the size of the returned result set. However, no
-        individual row in the result set can exceed 100 MiB, and no
-        column value can exceed 10 MiB.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_execute_streaming_sql():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ExecuteSqlRequest(
-                    session="session_value",
-                    sql="sql_value",
-                )
-
-                # Make the request
-                stream = client.execute_streaming_sql(request=request)
-
-                # Handle the response
-                for response in stream:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.ExecuteSqlRequest, dict]):
-                The request object. The request for
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-                [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            Iterable[google.cloud.spanner_v1.types.PartialResultSet]:
-                Partial results from a streaming read
-                or SQL query. Streaming reads and SQL
-                queries better tolerate large result
-                sets, large rows, and large values, but
-                are a little trickier to consume.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ExecuteSqlRequest):
-            request = spanner.ExecuteSqlRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.execute_streaming_sql]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def execute_batch_dml(
-        self,
-        request: Optional[Union[spanner.ExecuteBatchDmlRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.ExecuteBatchDmlResponse:
-        r"""Executes a batch of SQL DML statements. This method allows many
-        statements to be run with lower latency than submitting them
-        sequentially with
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        Statements are executed in sequential order. A request can
-        succeed even if a statement fails. The
-        [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status]
-        field in the response provides information about the statement
-        that failed. Clients must inspect this field to determine
-        whether an error occurred.
-
-        Execution stops after the first failed statement; the remaining
-        statements are not executed.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_execute_batch_dml():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                statements = spanner_v1.Statement()
-                statements.sql = "sql_value"
-
-                request = spanner_v1.ExecuteBatchDmlRequest(
-                    session="session_value",
-                    statements=statements,
-                    seqno=550,
-                )
-
-                # Make the request
-                response = client.execute_batch_dml(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.ExecuteBatchDmlRequest, dict]):
-                The request object. The request for
-                [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.ExecuteBatchDmlResponse:
-                The response for
-                   [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-                   Contains a list of
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   one for each DML statement that has successfully
-                   executed, in the same order as the statements in the
-                   request. If a statement fails, the status in the
-                   response body identifies the cause of the failure.
-
-                   To check for DML statements that failed, use the
-                   following approach:
-
-                   1. Check the status in the response message. The
-                   [google.rpc.Code][google.rpc.Code] enum value OK
-                   indicates that all statements were executed
-                   successfully. 2. If the status was not OK, check the
-                   number of result sets in the response. If the
-                   response contains N
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   then statement N+1 in the request failed.
-
-                   Example 1:
-
-                   - Request: 5 DML statements, all executed
-                     successfully.
-
-                   \* Response: 5
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   with the status OK.
-
-                   Example 2:
-
-                   - Request: 5 DML statements. The third statement has
-                     a syntax error.
-
-                   \* Response: 2
-                   [ResultSet][google.spanner.v1.ResultSet] messages,
-                   and a syntax error (INVALID_ARGUMENT) status. The
-                   number of [ResultSet][google.spanner.v1.ResultSet]
-                   messages indicates that the third statement failed,
-                   and the fourth and fifth statements were not
-                   executed.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ExecuteBatchDmlRequest):
-            request = spanner.ExecuteBatchDmlRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.execute_batch_dml]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def read(
-        self,
-        request: Optional[Union[spanner.ReadRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> result_set.ResultSet:
-        r"""Reads rows from the database using key lookups and scans, as a
-        simple key/value style alternative to
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method
-        can't be used to return a result set larger than 10 MiB; if the
-        read matches more data than that, the read fails with a
-        ``FAILED_PRECONDITION`` error.
-
-        Reads inside read-write transactions might return ``ABORTED``.
-        If this occurs, the application should restart the transaction
-        from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be yielded in streaming fashion by
-        calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead]
-        instead.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_read():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ReadRequest(
-                    session="session_value",
-                    table="table_value",
-                    columns=['columns_value1', 'columns_value2'],
-                )
-
-                # Make the request
-                response = client.read(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.ReadRequest, dict]):
-                The request object. The request for [Read][google.spanner.v1.Spanner.Read]
-                and
-                [StreamingRead][google.spanner.v1.Spanner.StreamingRead].
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.ResultSet:
-                Results from [Read][google.spanner.v1.Spanner.Read] or
-                   [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ReadRequest):
-            request = spanner.ReadRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.read]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def streaming_read(
-        self,
-        request: Optional[Union[spanner.ReadRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> Iterable[result_set.PartialResultSet]:
-        r"""Like [Read][google.spanner.v1.Spanner.Read], except returns the
-        result set as a stream. Unlike
-        [Read][google.spanner.v1.Spanner.Read], there is no limit on the
-        size of the returned result set. However, no individual row in
-        the result set can exceed 100 MiB, and no column value can
-        exceed 10 MiB.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_streaming_read():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.ReadRequest(
-                    session="session_value",
-                    table="table_value",
-                    columns=['columns_value1', 'columns_value2'],
-                )
-
-                # Make the request
-                stream = client.streaming_read(request=request)
-
-                # Handle the response
-                for response in stream:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.ReadRequest, dict]):
-                The request object. The request for [Read][google.spanner.v1.Spanner.Read]
-                and
-                [StreamingRead][google.spanner.v1.Spanner.StreamingRead].
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            Iterable[google.cloud.spanner_v1.types.PartialResultSet]:
-                Partial results from a streaming read
-                or SQL query. Streaming reads and SQL
-                queries better tolerate large result
-                sets, large rows, and large values, but
-                are a little trickier to consume.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.ReadRequest):
-            request = spanner.ReadRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.streaming_read]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def begin_transaction(
-        self,
-        request: Optional[Union[spanner.BeginTransactionRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        options: Optional[transaction.TransactionOptions] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> transaction.Transaction:
-        r"""Begins a new transaction. This step can often be skipped:
-        [Read][google.spanner.v1.Spanner.Read],
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-        [Commit][google.spanner.v1.Spanner.Commit] can begin a new
-        transaction as a side-effect.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_begin_transaction():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.BeginTransactionRequest(
-                    session="session_value",
-                )
-
-                # Make the request
-                response = client.begin_transaction(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.BeginTransactionRequest, dict]):
-                The request object. The request for
-                [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
-            session (str):
-                Required. The session in which the
-                transaction runs.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            options (google.cloud.spanner_v1.types.TransactionOptions):
-                Required. Options for the new
-                transaction.
-
-                This corresponds to the ``options`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.Transaction:
-                A transaction.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, options]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.BeginTransactionRequest):
-            request = spanner.BeginTransactionRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if session is not None:
-                request.session = session
-            if options is not None:
-                request.options = options
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.begin_transaction]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def commit(
-        self,
-        request: Optional[Union[spanner.CommitRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        transaction_id: Optional[bytes] = None,
-        mutations: Optional[MutableSequence[mutation.Mutation]] = None,
-        single_use_transaction: Optional[transaction.TransactionOptions] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> commit_response.CommitResponse:
-        r"""Commits a transaction. The request includes the mutations to be
-        applied to rows in the database.
-
-        ``Commit`` might return an ``ABORTED`` error. This can occur at
-        any time; commonly, the cause is conflicts with concurrent
-        transactions. However, it can also happen for a variety of other
-        reasons. If ``Commit`` returns ``ABORTED``, the caller should
-        retry the transaction from the beginning, reusing the same
-        session.
-
-        On very rare occasions, ``Commit`` might return ``UNKNOWN``.
-        This can happen, for example, if the client job experiences a 1+
-        hour networking failure. At that point, Cloud Spanner has lost
-        track of the transaction outcome and we recommend that you
-        perform another read from the database to see the state of
-        things as they are now.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_commit():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.CommitRequest(
-                    transaction_id=b'transaction_id_blob',
-                    session="session_value",
-                )
-
-                # Make the request
-                response = client.commit(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.CommitRequest, dict]):
-                The request object. The request for
-                [Commit][google.spanner.v1.Spanner.Commit].
-            session (str):
-                Required. The session in which the
-                transaction to be committed is running.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            transaction_id (bytes):
-                Commit a previously-started
-                transaction.
-
-                This corresponds to the ``transaction_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            mutations (MutableSequence[google.cloud.spanner_v1.types.Mutation]):
-                The mutations to be executed when
-                this transaction commits. All mutations
-                are applied atomically, in the order
-                they appear in this list.
-
-                This corresponds to the ``mutations`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            single_use_transaction (google.cloud.spanner_v1.types.TransactionOptions):
-                Execute mutations in a temporary transaction. Note that
-                unlike commit of a previously-started transaction,
-                commit with a temporary transaction is non-idempotent.
-                That is, if the ``CommitRequest`` is sent to Cloud
-                Spanner more than once (for instance, due to retries in
-                the application, or in the transport library), it's
-                possible that the mutations are executed more than once.
-                If this is undesirable, use
-                [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction]
-                and [Commit][google.spanner.v1.Spanner.Commit] instead.
-
-                This corresponds to the ``single_use_transaction`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.CommitResponse:
-                The response for
-                [Commit][google.spanner.v1.Spanner.Commit].
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, transaction_id, mutations, single_use_transaction]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.CommitRequest):
-            request = spanner.CommitRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if session is not None:
-                request.session = session
-            if transaction_id is not None:
-                request.transaction_id = transaction_id
-            if mutations is not None:
-                request.mutations = mutations
-            if single_use_transaction is not None:
-                request.single_use_transaction = single_use_transaction
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.commit]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def rollback(
-        self,
-        request: Optional[Union[spanner.RollbackRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        transaction_id: Optional[bytes] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> None:
-        r"""Rolls back a transaction, releasing any locks it holds. It's a
-        good idea to call this for any transaction that includes one or
-        more [Read][google.spanner.v1.Spanner.Read] or
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and
-        ultimately decides not to commit.
-
-        ``Rollback`` returns ``OK`` if it successfully aborts the
-        transaction, the transaction was already aborted, or the
-        transaction isn't found. ``Rollback`` never returns ``ABORTED``.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_rollback():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.RollbackRequest(
-                    session="session_value",
-                    transaction_id=b'transaction_id_blob',
-                )
-
-                # Make the request
-                client.rollback(request=request)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.RollbackRequest, dict]):
-                The request object. The request for
-                [Rollback][google.spanner.v1.Spanner.Rollback].
-            session (str):
-                Required. The session in which the
-                transaction to roll back is running.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            transaction_id (bytes):
-                Required. The transaction to roll
-                back.
-
-                This corresponds to the ``transaction_id`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, transaction_id]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.RollbackRequest):
-            request = spanner.RollbackRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if session is not None:
-                request.session = session
-            if transaction_id is not None:
-                request.transaction_id = transaction_id
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.rollback]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-    def partition_query(
-        self,
-        request: Optional[Union[spanner.PartitionQueryRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.PartitionResponse:
-        r"""Creates a set of partition tokens that can be used to execute a
-        query operation in parallel. Each of the returned partition
-        tokens can be used by
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        to specify a subset of the query result to read. The same
-        session and read-only transaction must be used by the
-        ``PartitionQueryRequest`` used to create the partition tokens
-        and the ``ExecuteSqlRequests`` that use the partition tokens.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the query, and the whole operation must be restarted
-        from the beginning.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_partition_query():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.PartitionQueryRequest(
-                    session="session_value",
-                    sql="sql_value",
-                )
-
-                # Make the request
-                response = client.partition_query(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.PartitionQueryRequest, dict]):
-                The request object. The request for
-                [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.PartitionResponse:
-                The response for [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-                   or
-                   [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.PartitionQueryRequest):
-            request = spanner.PartitionQueryRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.partition_query]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def partition_read(
-        self,
-        request: Optional[Union[spanner.PartitionReadRequest, dict]] = None,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> spanner.PartitionResponse:
-        r"""Creates a set of partition tokens that can be used to execute a
-        read operation in parallel. Each of the returned partition
-        tokens can be used by
-        [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to
-        specify a subset of the read result to read. The same session
-        and read-only transaction must be used by the
-        ``PartitionReadRequest`` used to create the partition tokens and
-        the ``ReadRequests`` that use the partition tokens. There are no
-        ordering guarantees on rows returned among the returned
-        partition tokens, or even within each individual
-        ``StreamingRead`` call issued with a ``partition_token``.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the read, and the whole operation must be restarted
-        from the beginning.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_partition_read():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                request = spanner_v1.PartitionReadRequest(
-                    session="session_value",
-                    table="table_value",
-                )
-
-                # Make the request
-                response = client.partition_read(request=request)
-
-                # Handle the response
-                print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.PartitionReadRequest, dict]):
-                The request object. The request for
-                [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            google.cloud.spanner_v1.types.PartitionResponse:
-                The response for [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-                   or
-                   [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.PartitionReadRequest):
-            request = spanner.PartitionReadRequest(request)
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.partition_read]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def batch_write(
-        self,
-        request: Optional[Union[spanner.BatchWriteRequest, dict]] = None,
-        *,
-        session: Optional[str] = None,
-        mutation_groups: Optional[
-            MutableSequence[spanner.BatchWriteRequest.MutationGroup]
-        ] = None,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-    ) -> Iterable[spanner.BatchWriteResponse]:
-        r"""Batches the supplied mutation groups in a collection of
-        efficient transactions. All mutations in a group are committed
-        atomically. However, mutations across groups can be committed
-        non-atomically in an unspecified order and thus, they must be
-        independent of each other. Partial failure is possible, that is,
-        some groups might have been committed successfully, while some
-        might have failed. The results of individual batches are
-        streamed into the response as the batches are applied.
-
-        ``BatchWrite`` requests are not replay protected, meaning that
-        each mutation group can be applied more than once. Replays of
-        non-idempotent mutations can have undesirable effects. For
-        example, replays of an insert mutation can produce an already
-        exists error or if you use generated or commit timestamp-based
-        keys, it can result in additional rows being added to the
-        mutation's table. We recommend structuring your mutation groups
-        to be idempotent to avoid this issue.
-
-        .. code-block:: python
-
-            # This snippet has been automatically generated and should be regarded as a
-            # code template only.
-            # It will require modifications to work:
-            # - It may require correct/in-range values for request initialization.
-            # - It may require specifying regional endpoints when creating the service
-            #   client as shown in:
-            #   https://googleapis.dev/python/google-api-core/latest/client_options.html
-            from google.cloud import spanner_v1
-
-            def sample_batch_write():
-                # Create a client
-                client = spanner_v1.SpannerClient()
-
-                # Initialize request argument(s)
-                mutation_groups = spanner_v1.MutationGroup()
-                mutation_groups.mutations.insert.table = "table_value"
-
-                request = spanner_v1.BatchWriteRequest(
-                    session="session_value",
-                    mutation_groups=mutation_groups,
-                )
-
-                # Make the request
-                stream = client.batch_write(request=request)
-
-                # Handle the response
-                for response in stream:
-                    print(response)
-
-        Args:
-            request (Union[google.cloud.spanner_v1.types.BatchWriteRequest, dict]):
-                The request object. The request for
-                [BatchWrite][google.spanner.v1.Spanner.BatchWrite].
-            session (str):
-                Required. The session in which the
-                batch request is to be run.
-
-                This corresponds to the ``session`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            mutation_groups (MutableSequence[google.cloud.spanner_v1.types.BatchWriteRequest.MutationGroup]):
-                Required. The groups of mutations to
-                be applied.
-
-                This corresponds to the ``mutation_groups`` field
-                on the ``request`` instance; if ``request`` is provided, this
-                should not be set.
-            retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-
-        Returns:
-            Iterable[google.cloud.spanner_v1.types.BatchWriteResponse]:
-                The result of applying a batch of
-                mutations.
-
-        """
-        # Create or coerce a protobuf request object.
-        # - Quick check: If we got a request object, we should *not* have
-        #   gotten any keyword arguments that map to the request.
-        flattened_params = [session, mutation_groups]
-        has_flattened_params = (
-            len([param for param in flattened_params if param is not None]) > 0
-        )
-        if request is not None and has_flattened_params:
-            raise ValueError(
-                "If the `request` argument is set, then none of "
-                "the individual field arguments should be set."
-            )
-
-        # - Use the request object if provided (there's no risk of modifying the input as
-        #   there are no flattened fields), or create one.
-        if not isinstance(request, spanner.BatchWriteRequest):
-            request = spanner.BatchWriteRequest(request)
-            # If we have keyword arguments corresponding to fields on the
-            # request, apply these.
-            if session is not None:
-                request.session = session
-            if mutation_groups is not None:
-                request.mutation_groups = mutation_groups
-
-        # Wrap the RPC method; this adds retry and timeout information,
-        # and friendly error handling.
-        rpc = self._transport._wrapped_methods[self._transport.batch_write]
-
-        # Certain fields should be provided within the metadata header;
-        # add these here.
-        metadata = tuple(metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("session", request.session),)),
-        )
-
-        # Validate the universe domain.
-        self._validate_universe_domain()
-
-        # Send the request.
-        response = rpc(
-            request,
-            retry=retry,
-            timeout=timeout,
-            metadata=metadata,
-        )
-
-        # Done; return the response.
-        return response
-
-    def __enter__(self) -> "SpannerClient":
-        return self
-
-    def __exit__(self, type, value, traceback):
-        """Releases underlying transport's resources.
-
-        .. warning::
-            ONLY use as a context manager if the transport is NOT shared
-            with other clients! Exiting the with block will CLOSE the transport
-            and may cause errors in other clients!
-        """
-        self.transport.close()
-
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-__all__ = ("SpannerClient",)
diff --git a/google/cloud/spanner_v1/services/spanner/pagers.py b/google/cloud/spanner_v1/services/spanner/pagers.py
deleted file mode 100644
index 5b03ccccf1..0000000000
--- a/google/cloud/spanner_v1/services/spanner/pagers.py
+++ /dev/null
@@ -1,197 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from typing import (
-    Any,
-    AsyncIterator,
-    Awaitable,
-    Callable,
-    Iterator,
-    Optional,
-    Sequence,
-    Tuple,
-    Union,
-)
-
-from google.api_core import gapic_v1
-from google.api_core import retry as retries
-from google.api_core import retry_async as retries_async
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-    OptionalAsyncRetry = Union[
-        retries_async.AsyncRetry, gapic_v1.method._MethodDefault, None
-    ]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-    OptionalAsyncRetry = Union[retries_async.AsyncRetry, object, None]  # type: ignore
-
-from google.cloud.spanner_v1.types import spanner
-
-
-class ListSessionsPager:
-    """A pager for iterating through ``list_sessions`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_v1.types.ListSessionsResponse` object, and
-    provides an ``__iter__`` method to iterate through its
-    ``sessions`` field.
-
-    If there are more pages, the ``__iter__`` method will make additional
-    ``ListSessions`` requests and continue to iterate
-    through the ``sessions`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_v1.types.ListSessionsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., spanner.ListSessionsResponse],
-        request: spanner.ListSessionsRequest,
-        response: spanner.ListSessionsResponse,
-        *,
-        retry: OptionalRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiate the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_v1.types.ListSessionsRequest):
-                The initial request object.
-            response (google.cloud.spanner_v1.types.ListSessionsResponse):
-                The initial response object.
-            retry (google.api_core.retry.Retry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner.ListSessionsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    def pages(self) -> Iterator[spanner.ListSessionsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __iter__(self) -> Iterator[spanner.Session]:
-        for page in self.pages:
-            yield from page.sessions
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
-
-
-class ListSessionsAsyncPager:
-    """A pager for iterating through ``list_sessions`` requests.
-
-    This class thinly wraps an initial
-    :class:`google.cloud.spanner_v1.types.ListSessionsResponse` object, and
-    provides an ``__aiter__`` method to iterate through its
-    ``sessions`` field.
-
-    If there are more pages, the ``__aiter__`` method will make additional
-    ``ListSessions`` requests and continue to iterate
-    through the ``sessions`` field on the
-    corresponding responses.
-
-    All the usual :class:`google.cloud.spanner_v1.types.ListSessionsResponse`
-    attributes are available on the pager. If multiple requests are made, only
-    the most recent response is retained, and thus used for attribute lookup.
-    """
-
-    def __init__(
-        self,
-        method: Callable[..., Awaitable[spanner.ListSessionsResponse]],
-        request: spanner.ListSessionsRequest,
-        response: spanner.ListSessionsResponse,
-        *,
-        retry: OptionalAsyncRetry = gapic_v1.method.DEFAULT,
-        timeout: Union[float, object] = gapic_v1.method.DEFAULT,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]] = ()
-    ):
-        """Instantiates the pager.
-
-        Args:
-            method (Callable): The method that was originally called, and
-                which instantiated this pager.
-            request (google.cloud.spanner_v1.types.ListSessionsRequest):
-                The initial request object.
-            response (google.cloud.spanner_v1.types.ListSessionsResponse):
-                The initial response object.
-            retry (google.api_core.retry.AsyncRetry): Designation of what errors,
-                if any, should be retried.
-            timeout (float): The timeout for this request.
-            metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                sent along with the request as metadata. Normally, each value must be of type `str`,
-                but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                be of type `bytes`.
-        """
-        self._method = method
-        self._request = spanner.ListSessionsRequest(request)
-        self._response = response
-        self._retry = retry
-        self._timeout = timeout
-        self._metadata = metadata
-
-    def __getattr__(self, name: str) -> Any:
-        return getattr(self._response, name)
-
-    @property
-    async def pages(self) -> AsyncIterator[spanner.ListSessionsResponse]:
-        yield self._response
-        while self._response.next_page_token:
-            self._request.page_token = self._response.next_page_token
-            self._response = await self._method(
-                self._request,
-                retry=self._retry,
-                timeout=self._timeout,
-                metadata=self._metadata,
-            )
-            yield self._response
-
-    def __aiter__(self) -> AsyncIterator[spanner.Session]:
-        async def async_generator():
-            async for page in self.pages:
-                for response in page.sessions:
-                    yield response
-
-        return async_generator()
-
-    def __repr__(self) -> str:
-        return "{0}<{1!r}>".format(self.__class__.__name__, self._response)
diff --git a/google/cloud/spanner_v1/services/spanner/transports/README.rst b/google/cloud/spanner_v1/services/spanner/transports/README.rst
deleted file mode 100644
index 99997401d5..0000000000
--- a/google/cloud/spanner_v1/services/spanner/transports/README.rst
+++ /dev/null
@@ -1,9 +0,0 @@
-
-transport inheritance structure
-_______________________________
-
-`SpannerTransport` is the ABC for all transports.
-- public child `SpannerGrpcTransport` for sync gRPC transport (defined in `grpc.py`).
-- public child `SpannerGrpcAsyncIOTransport` for async gRPC transport (defined in `grpc_asyncio.py`).
-- private child `_BaseSpannerRestTransport` for base REST transport with inner classes `_BaseMETHOD` (defined in `rest_base.py`).
-- public child `SpannerRestTransport` for sync REST transport with inner classes `METHOD` derived from the parent's corresponding `_BaseMETHOD` classes (defined in `rest.py`).
diff --git a/google/cloud/spanner_v1/services/spanner/transports/__init__.py b/google/cloud/spanner_v1/services/spanner/transports/__init__.py
deleted file mode 100644
index c3344b7d1e..0000000000
--- a/google/cloud/spanner_v1/services/spanner/transports/__init__.py
+++ /dev/null
@@ -1,36 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from collections import OrderedDict
-from typing import Dict, Type
-
-from .base import SpannerTransport
-from .grpc import SpannerGrpcTransport
-from .grpc_asyncio import SpannerGrpcAsyncIOTransport
-from .rest import SpannerRestInterceptor, SpannerRestTransport
-
-# Compile a registry of transports.
-_transport_registry = OrderedDict()  # type: Dict[str, Type[SpannerTransport]]
-_transport_registry["grpc"] = SpannerGrpcTransport
-_transport_registry["grpc_asyncio"] = SpannerGrpcAsyncIOTransport
-_transport_registry["rest"] = SpannerRestTransport
-
-__all__ = (
-    "SpannerTransport",
-    "SpannerGrpcTransport",
-    "SpannerGrpcAsyncIOTransport",
-    "SpannerRestTransport",
-    "SpannerRestInterceptor",
-)
diff --git a/google/cloud/spanner_v1/services/spanner/transports/base.py b/google/cloud/spanner_v1/services/spanner/transports/base.py
deleted file mode 100644
index 4ce82fc560..0000000000
--- a/google/cloud/spanner_v1/services/spanner/transports/base.py
+++ /dev/null
@@ -1,522 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import abc
-from typing import Awaitable, Callable, Dict, Optional, Sequence, Union
-
-import google.api_core
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1
-from google.api_core import retry as retries
-import google.auth  # type: ignore
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.oauth2 import service_account  # type: ignore
-import google.protobuf
-from google.protobuf import empty_pb2  # type: ignore
-
-from google.cloud.spanner_v1 import gapic_version as package_version
-from google.cloud.spanner_v1.metrics.metrics_interceptor import MetricsInterceptor
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    result_set,
-    spanner,
-    transaction,
-)
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=package_version.__version__
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-class SpannerTransport(abc.ABC):
-    """Abstract transport class for Spanner."""
-
-    AUTH_SCOPES = (
-        "https://www.googleapis.com/auth/cloud-platform",
-        "https://www.googleapis.com/auth/spanner.data",
-    )
-
-    DEFAULT_HOST: str = "spanner.googleapis.com"
-
-    def __init__(
-        self,
-        *,
-        host: str = DEFAULT_HOST,
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-        metrics_interceptor: Optional[MetricsInterceptor] = None,
-        **kwargs,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A list of scopes.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-        """
-
-        scopes_kwargs = {"scopes": scopes, "default_scopes": self.AUTH_SCOPES}
-
-        # Save the scopes.
-        self._scopes = scopes
-        if not hasattr(self, "_ignore_credentials"):
-            self._ignore_credentials: bool = False
-
-        # If no credentials are provided, then determine the appropriate
-        # defaults.
-        if credentials and credentials_file:
-            raise core_exceptions.DuplicateCredentialArgs(
-                "'credentials_file' and 'credentials' are mutually exclusive"
-            )
-
-        if credentials_file is not None:
-            credentials, _ = google.auth.load_credentials_from_file(
-                credentials_file, **scopes_kwargs, quota_project_id=quota_project_id
-            )
-        elif credentials is None and not self._ignore_credentials:
-            credentials, _ = google.auth.default(
-                **scopes_kwargs, quota_project_id=quota_project_id
-            )
-            # Don't apply audience if the credentials file passed from user.
-            if hasattr(credentials, "with_gdch_audience"):
-                credentials = credentials.with_gdch_audience(
-                    api_audience if api_audience else host
-                )
-
-        # If the credentials are service account credentials, then always try to use self signed JWT.
-        if (
-            always_use_jwt_access
-            and isinstance(credentials, service_account.Credentials)
-            and hasattr(service_account.Credentials, "with_always_use_jwt_access")
-        ):
-            credentials = credentials.with_always_use_jwt_access(True)
-
-        # Save the credentials.
-        self._credentials = credentials
-
-        # Save the hostname. Default to port 443 (HTTPS) if none is specified.
-        if ":" not in host:
-            host += ":443"
-        self._host = host
-
-    @property
-    def host(self):
-        return self._host
-
-    def _prep_wrapped_messages(self, client_info):
-        # Precompute the wrapped methods.
-        self._wrapped_methods = {
-            self.create_session: gapic_v1.method.wrap_method(
-                self.create_session,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.batch_create_sessions: gapic_v1.method.wrap_method(
-                self.batch_create_sessions,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=60.0,
-                ),
-                default_timeout=60.0,
-                client_info=client_info,
-            ),
-            self.get_session: gapic_v1.method.wrap_method(
-                self.get_session,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.list_sessions: gapic_v1.method.wrap_method(
-                self.list_sessions,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_session: gapic_v1.method.wrap_method(
-                self.delete_session,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.execute_sql: gapic_v1.method.wrap_method(
-                self.execute_sql,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.execute_streaming_sql: gapic_v1.method.wrap_method(
-                self.execute_streaming_sql,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.execute_batch_dml: gapic_v1.method.wrap_method(
-                self.execute_batch_dml,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.read: gapic_v1.method.wrap_method(
-                self.read,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.streaming_read: gapic_v1.method.wrap_method(
-                self.streaming_read,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.begin_transaction: gapic_v1.method.wrap_method(
-                self.begin_transaction,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.commit: gapic_v1.method.wrap_method(
-                self.commit,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.rollback: gapic_v1.method.wrap_method(
-                self.rollback,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.partition_query: gapic_v1.method.wrap_method(
-                self.partition_query,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.partition_read: gapic_v1.method.wrap_method(
-                self.partition_read,
-                default_retry=retries.Retry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.batch_write: gapic_v1.method.wrap_method(
-                self.batch_write,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-        }
-
-    def close(self):
-        """Closes resources associated with the transport.
-
-        .. warning::
-             Only call this method if the transport is NOT shared
-             with other clients - this may cause errors in other clients!
-        """
-        raise NotImplementedError()
-
-    @property
-    def create_session(
-        self,
-    ) -> Callable[
-        [spanner.CreateSessionRequest],
-        Union[spanner.Session, Awaitable[spanner.Session]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def batch_create_sessions(
-        self,
-    ) -> Callable[
-        [spanner.BatchCreateSessionsRequest],
-        Union[
-            spanner.BatchCreateSessionsResponse,
-            Awaitable[spanner.BatchCreateSessionsResponse],
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def get_session(
-        self,
-    ) -> Callable[
-        [spanner.GetSessionRequest], Union[spanner.Session, Awaitable[spanner.Session]]
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def list_sessions(
-        self,
-    ) -> Callable[
-        [spanner.ListSessionsRequest],
-        Union[spanner.ListSessionsResponse, Awaitable[spanner.ListSessionsResponse]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def delete_session(
-        self,
-    ) -> Callable[
-        [spanner.DeleteSessionRequest],
-        Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def execute_sql(
-        self,
-    ) -> Callable[
-        [spanner.ExecuteSqlRequest],
-        Union[result_set.ResultSet, Awaitable[result_set.ResultSet]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def execute_streaming_sql(
-        self,
-    ) -> Callable[
-        [spanner.ExecuteSqlRequest],
-        Union[result_set.PartialResultSet, Awaitable[result_set.PartialResultSet]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def execute_batch_dml(
-        self,
-    ) -> Callable[
-        [spanner.ExecuteBatchDmlRequest],
-        Union[
-            spanner.ExecuteBatchDmlResponse, Awaitable[spanner.ExecuteBatchDmlResponse]
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def read(
-        self,
-    ) -> Callable[
-        [spanner.ReadRequest],
-        Union[result_set.ResultSet, Awaitable[result_set.ResultSet]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def streaming_read(
-        self,
-    ) -> Callable[
-        [spanner.ReadRequest],
-        Union[result_set.PartialResultSet, Awaitable[result_set.PartialResultSet]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def begin_transaction(
-        self,
-    ) -> Callable[
-        [spanner.BeginTransactionRequest],
-        Union[transaction.Transaction, Awaitable[transaction.Transaction]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def commit(
-        self,
-    ) -> Callable[
-        [spanner.CommitRequest],
-        Union[
-            commit_response.CommitResponse, Awaitable[commit_response.CommitResponse]
-        ],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def rollback(
-        self,
-    ) -> Callable[
-        [spanner.RollbackRequest], Union[empty_pb2.Empty, Awaitable[empty_pb2.Empty]]
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def partition_query(
-        self,
-    ) -> Callable[
-        [spanner.PartitionQueryRequest],
-        Union[spanner.PartitionResponse, Awaitable[spanner.PartitionResponse]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def partition_read(
-        self,
-    ) -> Callable[
-        [spanner.PartitionReadRequest],
-        Union[spanner.PartitionResponse, Awaitable[spanner.PartitionResponse]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def batch_write(
-        self,
-    ) -> Callable[
-        [spanner.BatchWriteRequest],
-        Union[spanner.BatchWriteResponse, Awaitable[spanner.BatchWriteResponse]],
-    ]:
-        raise NotImplementedError()
-
-    @property
-    def kind(self) -> str:
-        raise NotImplementedError()
-
-
-__all__ = ("SpannerTransport",)
diff --git a/google/cloud/spanner_v1/services/spanner/transports/grpc.py b/google/cloud/spanner_v1/services/spanner/transports/grpc.py
deleted file mode 100644
index 6380907123..0000000000
--- a/google/cloud/spanner_v1/services/spanner/transports/grpc.py
+++ /dev/null
@@ -1,918 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import json
-import logging as std_logging
-import pickle
-from typing import Callable, Dict, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import gapic_v1, grpc_helpers
-import google.auth  # type: ignore
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf.json_format import MessageToJson
-import google.protobuf.message
-import grpc  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.metrics.metrics_interceptor import MetricsInterceptor
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    result_set,
-    spanner,
-    transaction,
-)
-
-from .base import DEFAULT_CLIENT_INFO, SpannerTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class _LoggingClientInterceptor(grpc.UnaryUnaryClientInterceptor):  # pragma: NO COVER
-    def intercept_unary_unary(self, continuation, client_call_details, request):
-        logging_enabled = CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        )
-        if logging_enabled:  # pragma: NO COVER
-            request_metadata = client_call_details.metadata
-            if isinstance(request, proto.Message):
-                request_payload = type(request).to_json(request)
-            elif isinstance(request, google.protobuf.message.Message):
-                request_payload = MessageToJson(request)
-            else:
-                request_payload = f"{type(request).__name__}: {pickle.dumps(request)}"
-
-            request_metadata = {
-                key: value.decode("utf-8") if isinstance(value, bytes) else value
-                for key, value in request_metadata
-            }
-            grpc_request = {
-                "payload": request_payload,
-                "requestMethod": "grpc",
-                "metadata": dict(request_metadata),
-            }
-            _LOGGER.debug(
-                f"Sending request for {client_call_details.method}",
-                extra={
-                    "serviceName": "google.spanner.v1.Spanner",
-                    "rpcName": str(client_call_details.method),
-                    "request": grpc_request,
-                    "metadata": grpc_request["metadata"],
-                },
-            )
-        response = continuation(client_call_details, request)
-        if logging_enabled:  # pragma: NO COVER
-            response_metadata = response.trailing_metadata()
-            # Convert gRPC metadata `<class 'grpc.aio._metadata.Metadata'>` to list of tuples
-            metadata = (
-                dict([(k, str(v)) for k, v in response_metadata])
-                if response_metadata
-                else None
-            )
-            result = response.result()
-            if isinstance(result, proto.Message):
-                response_payload = type(result).to_json(result)
-            elif isinstance(result, google.protobuf.message.Message):
-                response_payload = MessageToJson(result)
-            else:
-                response_payload = f"{type(result).__name__}: {pickle.dumps(result)}"
-            grpc_response = {
-                "payload": response_payload,
-                "metadata": metadata,
-                "status": "OK",
-            }
-            _LOGGER.debug(
-                f"Received response for {client_call_details.method}.",
-                extra={
-                    "serviceName": "google.spanner.v1.Spanner",
-                    "rpcName": client_call_details.method,
-                    "response": grpc_response,
-                    "metadata": grpc_response["metadata"],
-                },
-            )
-        return response
-
-
-class SpannerGrpcTransport(SpannerTransport):
-    """gRPC backend transport for Spanner.
-
-    Cloud Spanner API
-
-    The Cloud Spanner API can be used to manage sessions and execute
-    transactions on data stored in Cloud Spanner databases.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends protocol buffers over the wire using gRPC (which is built on
-    top of HTTP/2); the ``grpcio`` package must be installed.
-    """
-
-    _stubs: Dict[str, Callable]
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        channel: Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]] = None,
-        api_mtls_endpoint: Optional[str] = None,
-        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-        metrics_interceptor: Optional[MetricsInterceptor] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-                This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if a ``channel`` instance is provided.
-                This argument will be removed in the next major version of this library.
-            scopes (Optional(Sequence[str])): A list of scopes. This argument is
-                ignored if a ``channel`` instance is provided.
-            channel (Optional[Union[grpc.Channel, Callable[..., grpc.Channel]]]):
-                A ``Channel`` instance through which to make calls, or a Callable
-                that constructs and returns one. If set to None, ``self.create_channel``
-                is used to create the channel. If a Callable is given, it will be called
-                with the same arguments as used in ``self.create_channel``.
-            api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
-                If provided, it overrides the ``host`` argument and tries to create
-                a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or application default SSL credentials.
-            client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                Deprecated. A callback to provide client SSL certificate bytes and
-                private key bytes, both in PEM format. It is ignored if
-                ``api_mtls_endpoint`` is None.
-            ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for the grpc channel. It is ignored if a ``channel`` instance is provided.
-            client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure a mutual TLS channel. It is
-                ignored if a ``channel`` instance or ``ssl_channel_credentials`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-
-        Raises:
-          google.auth.exceptions.MutualTLSChannelError: If mutual TLS transport
-              creation failed for any reason.
-          google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-        self._grpc_channel = None
-        self._ssl_channel_credentials = ssl_channel_credentials
-        self._stubs: Dict[str, Callable] = {}
-        self._metrics_interceptor = None
-
-        if api_mtls_endpoint:
-            warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
-        if client_cert_source:
-            warnings.warn("client_cert_source is deprecated", DeprecationWarning)
-
-        if isinstance(channel, grpc.Channel):
-            # Ignore credentials if a channel was passed.
-            credentials = None
-            self._ignore_credentials = True
-            # If a channel was explicitly provided, set it.
-            self._grpc_channel = channel
-            self._ssl_channel_credentials = None
-
-        else:
-            if api_mtls_endpoint:
-                host = api_mtls_endpoint
-
-                # Create SSL credentials with client_cert_source or application
-                # default SSL credentials.
-                if client_cert_source:
-                    cert, key = client_cert_source()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-                else:
-                    self._ssl_channel_credentials = SslCredentials().ssl_credentials
-
-            else:
-                if client_cert_source_for_mtls and not ssl_channel_credentials:
-                    cert, key = client_cert_source_for_mtls()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-
-        # The base transport sets the host, credentials and scopes
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            scopes=scopes,
-            quota_project_id=quota_project_id,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-        if not self._grpc_channel:
-            # initialize with the provided callable or the default channel
-            channel_init = channel or type(self).create_channel
-            self._grpc_channel = channel_init(
-                self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                # Set ``credentials_file`` to ``None`` here as
-                # the credentials that we saved earlier should be used.
-                credentials_file=None,
-                scopes=self._scopes,
-                ssl_credentials=self._ssl_channel_credentials,
-                quota_project_id=quota_project_id,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-
-        # Wrap the gRPC channel with the metric interceptor
-        if metrics_interceptor is not None:
-            self._metrics_interceptor = metrics_interceptor
-            self._grpc_channel = grpc.intercept_channel(
-                self._grpc_channel, metrics_interceptor
-            )
-
-        self._interceptor = _LoggingClientInterceptor()
-        self._logged_channel = grpc.intercept_channel(
-            self._grpc_channel, self._interceptor
-        )
-
-        # Wrap messages. This must be done after self._logged_channel exists
-        self._prep_wrapped_messages(client_info)
-
-    @classmethod
-    def create_channel(
-        cls,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        **kwargs,
-    ) -> grpc.Channel:
-        """Create and return a gRPC channel object.
-        Args:
-            host (Optional[str]): The host for the channel to use.
-            credentials (Optional[~.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify this application to the service. If
-                none are specified, the client will attempt to ascertain
-                the credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is mutually exclusive with credentials.  This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            kwargs (Optional[dict]): Keyword arguments, which are passed to the
-                channel creation.
-        Returns:
-            grpc.Channel: A gRPC channel object.
-
-        Raises:
-            google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-
-        return grpc_helpers.create_channel(
-            host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            quota_project_id=quota_project_id,
-            default_scopes=cls.AUTH_SCOPES,
-            scopes=scopes,
-            default_host=cls.DEFAULT_HOST,
-            **kwargs,
-        )
-
-    @property
-    def grpc_channel(self) -> grpc.Channel:
-        """Return the channel designed to connect to this service."""
-        return self._grpc_channel
-
-    @property
-    def create_session(
-        self,
-    ) -> Callable[[spanner.CreateSessionRequest], spanner.Session]:
-        r"""Return a callable for the create session method over gRPC.
-
-        Creates a new session. A session can be used to perform
-        transactions that read and/or modify data in a Cloud Spanner
-        database. Sessions are meant to be reused for many consecutive
-        transactions.
-
-        Sessions can only execute one transaction at a time. To execute
-        multiple concurrent read-write/write-only transactions, create
-        multiple sessions. Note that standalone reads and queries use a
-        transaction internally, and count toward the one transaction
-        limit.
-
-        Active sessions use additional server resources, so it's a good
-        idea to delete idle and unneeded sessions. Aside from explicit
-        deletes, Cloud Spanner can delete sessions when no operations
-        are sent for more than an hour. If a session is deleted,
-        requests to it return ``NOT_FOUND``.
-
-        Idle sessions can be kept alive by sending a trivial SQL query
-        periodically, for example, ``"SELECT 1"``.
-
-        Returns:
-            Callable[[~.CreateSessionRequest],
-                    ~.Session]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_session" not in self._stubs:
-            self._stubs["create_session"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/CreateSession",
-                request_serializer=spanner.CreateSessionRequest.serialize,
-                response_deserializer=spanner.Session.deserialize,
-            )
-        return self._stubs["create_session"]
-
-    @property
-    def batch_create_sessions(
-        self,
-    ) -> Callable[
-        [spanner.BatchCreateSessionsRequest], spanner.BatchCreateSessionsResponse
-    ]:
-        r"""Return a callable for the batch create sessions method over gRPC.
-
-        Creates multiple new sessions.
-
-        This API can be used to initialize a session cache on
-        the clients. See https://goo.gl/TgSFN2 for best
-        practices on session cache management.
-
-        Returns:
-            Callable[[~.BatchCreateSessionsRequest],
-                    ~.BatchCreateSessionsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "batch_create_sessions" not in self._stubs:
-            self._stubs["batch_create_sessions"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/BatchCreateSessions",
-                request_serializer=spanner.BatchCreateSessionsRequest.serialize,
-                response_deserializer=spanner.BatchCreateSessionsResponse.deserialize,
-            )
-        return self._stubs["batch_create_sessions"]
-
-    @property
-    def get_session(self) -> Callable[[spanner.GetSessionRequest], spanner.Session]:
-        r"""Return a callable for the get session method over gRPC.
-
-        Gets a session. Returns ``NOT_FOUND`` if the session doesn't
-        exist. This is mainly useful for determining whether a session
-        is still alive.
-
-        Returns:
-            Callable[[~.GetSessionRequest],
-                    ~.Session]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_session" not in self._stubs:
-            self._stubs["get_session"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/GetSession",
-                request_serializer=spanner.GetSessionRequest.serialize,
-                response_deserializer=spanner.Session.deserialize,
-            )
-        return self._stubs["get_session"]
-
-    @property
-    def list_sessions(
-        self,
-    ) -> Callable[[spanner.ListSessionsRequest], spanner.ListSessionsResponse]:
-        r"""Return a callable for the list sessions method over gRPC.
-
-        Lists all sessions in a given database.
-
-        Returns:
-            Callable[[~.ListSessionsRequest],
-                    ~.ListSessionsResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_sessions" not in self._stubs:
-            self._stubs["list_sessions"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/ListSessions",
-                request_serializer=spanner.ListSessionsRequest.serialize,
-                response_deserializer=spanner.ListSessionsResponse.deserialize,
-            )
-        return self._stubs["list_sessions"]
-
-    @property
-    def delete_session(
-        self,
-    ) -> Callable[[spanner.DeleteSessionRequest], empty_pb2.Empty]:
-        r"""Return a callable for the delete session method over gRPC.
-
-        Ends a session, releasing server resources associated
-        with it. This asynchronously triggers the cancellation
-        of any operations that are running with this session.
-
-        Returns:
-            Callable[[~.DeleteSessionRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_session" not in self._stubs:
-            self._stubs["delete_session"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/DeleteSession",
-                request_serializer=spanner.DeleteSessionRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_session"]
-
-    @property
-    def execute_sql(
-        self,
-    ) -> Callable[[spanner.ExecuteSqlRequest], result_set.ResultSet]:
-        r"""Return a callable for the execute sql method over gRPC.
-
-        Executes an SQL statement, returning all results in a single
-        reply. This method can't be used to return a result set larger
-        than 10 MiB; if the query yields more data than that, the query
-        fails with a ``FAILED_PRECONDITION`` error.
-
-        Operations inside read-write transactions might return
-        ``ABORTED``. If this occurs, the application should restart the
-        transaction from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be fetched in streaming fashion by
-        calling
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        instead.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        Returns:
-            Callable[[~.ExecuteSqlRequest],
-                    ~.ResultSet]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "execute_sql" not in self._stubs:
-            self._stubs["execute_sql"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/ExecuteSql",
-                request_serializer=spanner.ExecuteSqlRequest.serialize,
-                response_deserializer=result_set.ResultSet.deserialize,
-            )
-        return self._stubs["execute_sql"]
-
-    @property
-    def execute_streaming_sql(
-        self,
-    ) -> Callable[[spanner.ExecuteSqlRequest], result_set.PartialResultSet]:
-        r"""Return a callable for the execute streaming sql method over gRPC.
-
-        Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except
-        returns the result set as a stream. Unlike
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there is no
-        limit on the size of the returned result set. However, no
-        individual row in the result set can exceed 100 MiB, and no
-        column value can exceed 10 MiB.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        Returns:
-            Callable[[~.ExecuteSqlRequest],
-                    ~.PartialResultSet]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "execute_streaming_sql" not in self._stubs:
-            self._stubs["execute_streaming_sql"] = self._logged_channel.unary_stream(
-                "/google.spanner.v1.Spanner/ExecuteStreamingSql",
-                request_serializer=spanner.ExecuteSqlRequest.serialize,
-                response_deserializer=result_set.PartialResultSet.deserialize,
-            )
-        return self._stubs["execute_streaming_sql"]
-
-    @property
-    def execute_batch_dml(
-        self,
-    ) -> Callable[[spanner.ExecuteBatchDmlRequest], spanner.ExecuteBatchDmlResponse]:
-        r"""Return a callable for the execute batch dml method over gRPC.
-
-        Executes a batch of SQL DML statements. This method allows many
-        statements to be run with lower latency than submitting them
-        sequentially with
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        Statements are executed in sequential order. A request can
-        succeed even if a statement fails. The
-        [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status]
-        field in the response provides information about the statement
-        that failed. Clients must inspect this field to determine
-        whether an error occurred.
-
-        Execution stops after the first failed statement; the remaining
-        statements are not executed.
-
-        Returns:
-            Callable[[~.ExecuteBatchDmlRequest],
-                    ~.ExecuteBatchDmlResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "execute_batch_dml" not in self._stubs:
-            self._stubs["execute_batch_dml"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/ExecuteBatchDml",
-                request_serializer=spanner.ExecuteBatchDmlRequest.serialize,
-                response_deserializer=spanner.ExecuteBatchDmlResponse.deserialize,
-            )
-        return self._stubs["execute_batch_dml"]
-
-    @property
-    def read(self) -> Callable[[spanner.ReadRequest], result_set.ResultSet]:
-        r"""Return a callable for the read method over gRPC.
-
-        Reads rows from the database using key lookups and scans, as a
-        simple key/value style alternative to
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method
-        can't be used to return a result set larger than 10 MiB; if the
-        read matches more data than that, the read fails with a
-        ``FAILED_PRECONDITION`` error.
-
-        Reads inside read-write transactions might return ``ABORTED``.
-        If this occurs, the application should restart the transaction
-        from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be yielded in streaming fashion by
-        calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead]
-        instead.
-
-        Returns:
-            Callable[[~.ReadRequest],
-                    ~.ResultSet]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "read" not in self._stubs:
-            self._stubs["read"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/Read",
-                request_serializer=spanner.ReadRequest.serialize,
-                response_deserializer=result_set.ResultSet.deserialize,
-            )
-        return self._stubs["read"]
-
-    @property
-    def streaming_read(
-        self,
-    ) -> Callable[[spanner.ReadRequest], result_set.PartialResultSet]:
-        r"""Return a callable for the streaming read method over gRPC.
-
-        Like [Read][google.spanner.v1.Spanner.Read], except returns the
-        result set as a stream. Unlike
-        [Read][google.spanner.v1.Spanner.Read], there is no limit on the
-        size of the returned result set. However, no individual row in
-        the result set can exceed 100 MiB, and no column value can
-        exceed 10 MiB.
-
-        Returns:
-            Callable[[~.ReadRequest],
-                    ~.PartialResultSet]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "streaming_read" not in self._stubs:
-            self._stubs["streaming_read"] = self._logged_channel.unary_stream(
-                "/google.spanner.v1.Spanner/StreamingRead",
-                request_serializer=spanner.ReadRequest.serialize,
-                response_deserializer=result_set.PartialResultSet.deserialize,
-            )
-        return self._stubs["streaming_read"]
-
-    @property
-    def begin_transaction(
-        self,
-    ) -> Callable[[spanner.BeginTransactionRequest], transaction.Transaction]:
-        r"""Return a callable for the begin transaction method over gRPC.
-
-        Begins a new transaction. This step can often be skipped:
-        [Read][google.spanner.v1.Spanner.Read],
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-        [Commit][google.spanner.v1.Spanner.Commit] can begin a new
-        transaction as a side-effect.
-
-        Returns:
-            Callable[[~.BeginTransactionRequest],
-                    ~.Transaction]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "begin_transaction" not in self._stubs:
-            self._stubs["begin_transaction"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/BeginTransaction",
-                request_serializer=spanner.BeginTransactionRequest.serialize,
-                response_deserializer=transaction.Transaction.deserialize,
-            )
-        return self._stubs["begin_transaction"]
-
-    @property
-    def commit(
-        self,
-    ) -> Callable[[spanner.CommitRequest], commit_response.CommitResponse]:
-        r"""Return a callable for the commit method over gRPC.
-
-        Commits a transaction. The request includes the mutations to be
-        applied to rows in the database.
-
-        ``Commit`` might return an ``ABORTED`` error. This can occur at
-        any time; commonly, the cause is conflicts with concurrent
-        transactions. However, it can also happen for a variety of other
-        reasons. If ``Commit`` returns ``ABORTED``, the caller should
-        retry the transaction from the beginning, reusing the same
-        session.
-
-        On very rare occasions, ``Commit`` might return ``UNKNOWN``.
-        This can happen, for example, if the client job experiences a 1+
-        hour networking failure. At that point, Cloud Spanner has lost
-        track of the transaction outcome and we recommend that you
-        perform another read from the database to see the state of
-        things as they are now.
-
-        Returns:
-            Callable[[~.CommitRequest],
-                    ~.CommitResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "commit" not in self._stubs:
-            self._stubs["commit"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/Commit",
-                request_serializer=spanner.CommitRequest.serialize,
-                response_deserializer=commit_response.CommitResponse.deserialize,
-            )
-        return self._stubs["commit"]
-
-    @property
-    def rollback(self) -> Callable[[spanner.RollbackRequest], empty_pb2.Empty]:
-        r"""Return a callable for the rollback method over gRPC.
-
-        Rolls back a transaction, releasing any locks it holds. It's a
-        good idea to call this for any transaction that includes one or
-        more [Read][google.spanner.v1.Spanner.Read] or
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and
-        ultimately decides not to commit.
-
-        ``Rollback`` returns ``OK`` if it successfully aborts the
-        transaction, the transaction was already aborted, or the
-        transaction isn't found. ``Rollback`` never returns ``ABORTED``.
-
-        Returns:
-            Callable[[~.RollbackRequest],
-                    ~.Empty]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "rollback" not in self._stubs:
-            self._stubs["rollback"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/Rollback",
-                request_serializer=spanner.RollbackRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["rollback"]
-
-    @property
-    def partition_query(
-        self,
-    ) -> Callable[[spanner.PartitionQueryRequest], spanner.PartitionResponse]:
-        r"""Return a callable for the partition query method over gRPC.
-
-        Creates a set of partition tokens that can be used to execute a
-        query operation in parallel. Each of the returned partition
-        tokens can be used by
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        to specify a subset of the query result to read. The same
-        session and read-only transaction must be used by the
-        ``PartitionQueryRequest`` used to create the partition tokens
-        and the ``ExecuteSqlRequests`` that use the partition tokens.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the query, and the whole operation must be restarted
-        from the beginning.
-
-        Returns:
-            Callable[[~.PartitionQueryRequest],
-                    ~.PartitionResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "partition_query" not in self._stubs:
-            self._stubs["partition_query"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/PartitionQuery",
-                request_serializer=spanner.PartitionQueryRequest.serialize,
-                response_deserializer=spanner.PartitionResponse.deserialize,
-            )
-        return self._stubs["partition_query"]
-
-    @property
-    def partition_read(
-        self,
-    ) -> Callable[[spanner.PartitionReadRequest], spanner.PartitionResponse]:
-        r"""Return a callable for the partition read method over gRPC.
-
-        Creates a set of partition tokens that can be used to execute a
-        read operation in parallel. Each of the returned partition
-        tokens can be used by
-        [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to
-        specify a subset of the read result to read. The same session
-        and read-only transaction must be used by the
-        ``PartitionReadRequest`` used to create the partition tokens and
-        the ``ReadRequests`` that use the partition tokens. There are no
-        ordering guarantees on rows returned among the returned
-        partition tokens, or even within each individual
-        ``StreamingRead`` call issued with a ``partition_token``.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the read, and the whole operation must be restarted
-        from the beginning.
-
-        Returns:
-            Callable[[~.PartitionReadRequest],
-                    ~.PartitionResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "partition_read" not in self._stubs:
-            self._stubs["partition_read"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/PartitionRead",
-                request_serializer=spanner.PartitionReadRequest.serialize,
-                response_deserializer=spanner.PartitionResponse.deserialize,
-            )
-        return self._stubs["partition_read"]
-
-    @property
-    def batch_write(
-        self,
-    ) -> Callable[[spanner.BatchWriteRequest], spanner.BatchWriteResponse]:
-        r"""Return a callable for the batch write method over gRPC.
-
-        Batches the supplied mutation groups in a collection of
-        efficient transactions. All mutations in a group are committed
-        atomically. However, mutations across groups can be committed
-        non-atomically in an unspecified order and thus, they must be
-        independent of each other. Partial failure is possible, that is,
-        some groups might have been committed successfully, while some
-        might have failed. The results of individual batches are
-        streamed into the response as the batches are applied.
-
-        ``BatchWrite`` requests are not replay protected, meaning that
-        each mutation group can be applied more than once. Replays of
-        non-idempotent mutations can have undesirable effects. For
-        example, replays of an insert mutation can produce an already
-        exists error or if you use generated or commit timestamp-based
-        keys, it can result in additional rows being added to the
-        mutation's table. We recommend structuring your mutation groups
-        to be idempotent to avoid this issue.
-
-        Returns:
-            Callable[[~.BatchWriteRequest],
-                    ~.BatchWriteResponse]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "batch_write" not in self._stubs:
-            self._stubs["batch_write"] = self._logged_channel.unary_stream(
-                "/google.spanner.v1.Spanner/BatchWrite",
-                request_serializer=spanner.BatchWriteRequest.serialize,
-                response_deserializer=spanner.BatchWriteResponse.deserialize,
-            )
-        return self._stubs["batch_write"]
-
-    def close(self):
-        self._logged_channel.close()
-
-    @property
-    def kind(self) -> str:
-        return "grpc"
-
-
-__all__ = ("SpannerGrpcTransport",)
diff --git a/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py b/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py
deleted file mode 100644
index 9a396a2b77..0000000000
--- a/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py
+++ /dev/null
@@ -1,1151 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import inspect
-import json
-import logging as std_logging
-import pickle
-from typing import Awaitable, Callable, Dict, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1, grpc_helpers_async
-from google.api_core import retry_async as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.grpc import SslCredentials  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf.json_format import MessageToJson
-import google.protobuf.message
-import grpc  # type: ignore
-from grpc.experimental import aio  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.metrics.metrics_interceptor import MetricsInterceptor
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    result_set,
-    spanner,
-    transaction,
-)
-
-from .base import DEFAULT_CLIENT_INFO, SpannerTransport
-from .grpc import SpannerGrpcTransport
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = std_logging.getLogger(__name__)
-
-
-class _LoggingClientAIOInterceptor(
-    grpc.aio.UnaryUnaryClientInterceptor
-):  # pragma: NO COVER
-    async def intercept_unary_unary(self, continuation, client_call_details, request):
-        logging_enabled = CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-            std_logging.DEBUG
-        )
-        if logging_enabled:  # pragma: NO COVER
-            request_metadata = client_call_details.metadata
-            if isinstance(request, proto.Message):
-                request_payload = type(request).to_json(request)
-            elif isinstance(request, google.protobuf.message.Message):
-                request_payload = MessageToJson(request)
-            else:
-                request_payload = f"{type(request).__name__}: {pickle.dumps(request)}"
-
-            request_metadata = {
-                key: value.decode("utf-8") if isinstance(value, bytes) else value
-                for key, value in request_metadata
-            }
-            grpc_request = {
-                "payload": request_payload,
-                "requestMethod": "grpc",
-                "metadata": dict(request_metadata),
-            }
-            _LOGGER.debug(
-                f"Sending request for {client_call_details.method}",
-                extra={
-                    "serviceName": "google.spanner.v1.Spanner",
-                    "rpcName": str(client_call_details.method),
-                    "request": grpc_request,
-                    "metadata": grpc_request["metadata"],
-                },
-            )
-        response = await continuation(client_call_details, request)
-        if logging_enabled:  # pragma: NO COVER
-            response_metadata = await response.trailing_metadata()
-            # Convert gRPC metadata `<class 'grpc.aio._metadata.Metadata'>` to list of tuples
-            metadata = (
-                dict([(k, str(v)) for k, v in response_metadata])
-                if response_metadata
-                else None
-            )
-            result = await response
-            if isinstance(result, proto.Message):
-                response_payload = type(result).to_json(result)
-            elif isinstance(result, google.protobuf.message.Message):
-                response_payload = MessageToJson(result)
-            else:
-                response_payload = f"{type(result).__name__}: {pickle.dumps(result)}"
-            grpc_response = {
-                "payload": response_payload,
-                "metadata": metadata,
-                "status": "OK",
-            }
-            _LOGGER.debug(
-                f"Received response to rpc {client_call_details.method}.",
-                extra={
-                    "serviceName": "google.spanner.v1.Spanner",
-                    "rpcName": str(client_call_details.method),
-                    "response": grpc_response,
-                    "metadata": grpc_response["metadata"],
-                },
-            )
-        return response
-
-
-class SpannerGrpcAsyncIOTransport(SpannerTransport):
-    """gRPC AsyncIO backend transport for Spanner.
-
-    Cloud Spanner API
-
-    The Cloud Spanner API can be used to manage sessions and execute
-    transactions on data stored in Cloud Spanner databases.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends protocol buffers over the wire using gRPC (which is built on
-    top of HTTP/2); the ``grpcio`` package must be installed.
-    """
-
-    _grpc_channel: aio.Channel
-    _stubs: Dict[str, Callable] = {}
-
-    @classmethod
-    def create_channel(
-        cls,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        quota_project_id: Optional[str] = None,
-        **kwargs,
-    ) -> aio.Channel:
-        """Create and return a gRPC AsyncIO channel object.
-        Args:
-            host (Optional[str]): The host for the channel to use.
-            credentials (Optional[~.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify this application to the service. If
-                none are specified, the client will attempt to ascertain
-                the credentials from the environment.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            kwargs (Optional[dict]): Keyword arguments, which are passed to the
-                channel creation.
-        Returns:
-            aio.Channel: A gRPC AsyncIO channel object.
-        """
-
-        return grpc_helpers_async.create_channel(
-            host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            quota_project_id=quota_project_id,
-            default_scopes=cls.AUTH_SCOPES,
-            scopes=scopes,
-            default_host=cls.DEFAULT_HOST,
-            **kwargs,
-        )
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        channel: Optional[Union[aio.Channel, Callable[..., aio.Channel]]] = None,
-        api_mtls_endpoint: Optional[str] = None,
-        client_cert_source: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        ssl_channel_credentials: Optional[grpc.ChannelCredentials] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        api_audience: Optional[str] = None,
-        metrics_interceptor: Optional[MetricsInterceptor] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-                This argument is ignored if a ``channel`` instance is provided.
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if a ``channel`` instance is provided.
-                This argument will be removed in the next major version of this library.
-            scopes (Optional[Sequence[str]]): A optional list of scopes needed for this
-                service. These are only used when credentials are not specified and
-                are passed to :func:`google.auth.default`.
-            channel (Optional[Union[aio.Channel, Callable[..., aio.Channel]]]):
-                A ``Channel`` instance through which to make calls, or a Callable
-                that constructs and returns one. If set to None, ``self.create_channel``
-                is used to create the channel. If a Callable is given, it will be called
-                with the same arguments as used in ``self.create_channel``.
-            api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
-                If provided, it overrides the ``host`` argument and tries to create
-                a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or application default SSL credentials.
-            client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                Deprecated. A callback to provide client SSL certificate bytes and
-                private key bytes, both in PEM format. It is ignored if
-                ``api_mtls_endpoint`` is None.
-            ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for the grpc channel. It is ignored if a ``channel`` instance is provided.
-            client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
-                A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure a mutual TLS channel. It is
-                ignored if a ``channel`` instance or ``ssl_channel_credentials`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you're developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-
-        Raises:
-            google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
-              creation failed for any reason.
-          google.api_core.exceptions.DuplicateCredentialArgs: If both ``credentials``
-              and ``credentials_file`` are passed.
-        """
-        self._grpc_channel = None
-        self._ssl_channel_credentials = ssl_channel_credentials
-        self._stubs: Dict[str, Callable] = {}
-
-        if api_mtls_endpoint:
-            warnings.warn("api_mtls_endpoint is deprecated", DeprecationWarning)
-        if client_cert_source:
-            warnings.warn("client_cert_source is deprecated", DeprecationWarning)
-
-        if isinstance(channel, aio.Channel):
-            # Ignore credentials if a channel was passed.
-            credentials = None
-            self._ignore_credentials = True
-            # If a channel was explicitly provided, set it.
-            self._grpc_channel = channel
-            self._ssl_channel_credentials = None
-        else:
-            if api_mtls_endpoint:
-                host = api_mtls_endpoint
-
-                # Create SSL credentials with client_cert_source or application
-                # default SSL credentials.
-                if client_cert_source:
-                    cert, key = client_cert_source()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-                else:
-                    self._ssl_channel_credentials = SslCredentials().ssl_credentials
-
-            else:
-                if client_cert_source_for_mtls and not ssl_channel_credentials:
-                    cert, key = client_cert_source_for_mtls()
-                    self._ssl_channel_credentials = grpc.ssl_channel_credentials(
-                        certificate_chain=cert, private_key=key
-                    )
-
-        # The base transport sets the host, credentials and scopes
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            credentials_file=credentials_file,
-            scopes=scopes,
-            quota_project_id=quota_project_id,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-        if not self._grpc_channel:
-            # initialize with the provided callable or the default channel
-            channel_init = channel or type(self).create_channel
-            self._grpc_channel = channel_init(
-                self._host,
-                # use the credentials which are saved
-                credentials=self._credentials,
-                # Set ``credentials_file`` to ``None`` here as
-                # the credentials that we saved earlier should be used.
-                credentials_file=None,
-                scopes=self._scopes,
-                ssl_credentials=self._ssl_channel_credentials,
-                quota_project_id=quota_project_id,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-
-        self._interceptor = _LoggingClientAIOInterceptor()
-        self._grpc_channel._unary_unary_interceptors.append(self._interceptor)
-        self._logged_channel = self._grpc_channel
-        self._wrap_with_kind = (
-            "kind" in inspect.signature(gapic_v1.method_async.wrap_method).parameters
-        )
-        # Wrap messages. This must be done after self._logged_channel exists
-        self._prep_wrapped_messages(client_info)
-
-    @property
-    def grpc_channel(self) -> aio.Channel:
-        """Create the channel designed to connect to this service.
-
-        This property caches on the instance; repeated calls return
-        the same channel.
-        """
-        # Return the channel from cache.
-        return self._grpc_channel
-
-    @property
-    def create_session(
-        self,
-    ) -> Callable[[spanner.CreateSessionRequest], Awaitable[spanner.Session]]:
-        r"""Return a callable for the create session method over gRPC.
-
-        Creates a new session. A session can be used to perform
-        transactions that read and/or modify data in a Cloud Spanner
-        database. Sessions are meant to be reused for many consecutive
-        transactions.
-
-        Sessions can only execute one transaction at a time. To execute
-        multiple concurrent read-write/write-only transactions, create
-        multiple sessions. Note that standalone reads and queries use a
-        transaction internally, and count toward the one transaction
-        limit.
-
-        Active sessions use additional server resources, so it's a good
-        idea to delete idle and unneeded sessions. Aside from explicit
-        deletes, Cloud Spanner can delete sessions when no operations
-        are sent for more than an hour. If a session is deleted,
-        requests to it return ``NOT_FOUND``.
-
-        Idle sessions can be kept alive by sending a trivial SQL query
-        periodically, for example, ``"SELECT 1"``.
-
-        Returns:
-            Callable[[~.CreateSessionRequest],
-                    Awaitable[~.Session]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "create_session" not in self._stubs:
-            self._stubs["create_session"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/CreateSession",
-                request_serializer=spanner.CreateSessionRequest.serialize,
-                response_deserializer=spanner.Session.deserialize,
-            )
-        return self._stubs["create_session"]
-
-    @property
-    def batch_create_sessions(
-        self,
-    ) -> Callable[
-        [spanner.BatchCreateSessionsRequest],
-        Awaitable[spanner.BatchCreateSessionsResponse],
-    ]:
-        r"""Return a callable for the batch create sessions method over gRPC.
-
-        Creates multiple new sessions.
-
-        This API can be used to initialize a session cache on
-        the clients. See https://goo.gl/TgSFN2 for best
-        practices on session cache management.
-
-        Returns:
-            Callable[[~.BatchCreateSessionsRequest],
-                    Awaitable[~.BatchCreateSessionsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "batch_create_sessions" not in self._stubs:
-            self._stubs["batch_create_sessions"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/BatchCreateSessions",
-                request_serializer=spanner.BatchCreateSessionsRequest.serialize,
-                response_deserializer=spanner.BatchCreateSessionsResponse.deserialize,
-            )
-        return self._stubs["batch_create_sessions"]
-
-    @property
-    def get_session(
-        self,
-    ) -> Callable[[spanner.GetSessionRequest], Awaitable[spanner.Session]]:
-        r"""Return a callable for the get session method over gRPC.
-
-        Gets a session. Returns ``NOT_FOUND`` if the session doesn't
-        exist. This is mainly useful for determining whether a session
-        is still alive.
-
-        Returns:
-            Callable[[~.GetSessionRequest],
-                    Awaitable[~.Session]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "get_session" not in self._stubs:
-            self._stubs["get_session"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/GetSession",
-                request_serializer=spanner.GetSessionRequest.serialize,
-                response_deserializer=spanner.Session.deserialize,
-            )
-        return self._stubs["get_session"]
-
-    @property
-    def list_sessions(
-        self,
-    ) -> Callable[
-        [spanner.ListSessionsRequest], Awaitable[spanner.ListSessionsResponse]
-    ]:
-        r"""Return a callable for the list sessions method over gRPC.
-
-        Lists all sessions in a given database.
-
-        Returns:
-            Callable[[~.ListSessionsRequest],
-                    Awaitable[~.ListSessionsResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "list_sessions" not in self._stubs:
-            self._stubs["list_sessions"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/ListSessions",
-                request_serializer=spanner.ListSessionsRequest.serialize,
-                response_deserializer=spanner.ListSessionsResponse.deserialize,
-            )
-        return self._stubs["list_sessions"]
-
-    @property
-    def delete_session(
-        self,
-    ) -> Callable[[spanner.DeleteSessionRequest], Awaitable[empty_pb2.Empty]]:
-        r"""Return a callable for the delete session method over gRPC.
-
-        Ends a session, releasing server resources associated
-        with it. This asynchronously triggers the cancellation
-        of any operations that are running with this session.
-
-        Returns:
-            Callable[[~.DeleteSessionRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "delete_session" not in self._stubs:
-            self._stubs["delete_session"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/DeleteSession",
-                request_serializer=spanner.DeleteSessionRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["delete_session"]
-
-    @property
-    def execute_sql(
-        self,
-    ) -> Callable[[spanner.ExecuteSqlRequest], Awaitable[result_set.ResultSet]]:
-        r"""Return a callable for the execute sql method over gRPC.
-
-        Executes an SQL statement, returning all results in a single
-        reply. This method can't be used to return a result set larger
-        than 10 MiB; if the query yields more data than that, the query
-        fails with a ``FAILED_PRECONDITION`` error.
-
-        Operations inside read-write transactions might return
-        ``ABORTED``. If this occurs, the application should restart the
-        transaction from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be fetched in streaming fashion by
-        calling
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        instead.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        Returns:
-            Callable[[~.ExecuteSqlRequest],
-                    Awaitable[~.ResultSet]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "execute_sql" not in self._stubs:
-            self._stubs["execute_sql"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/ExecuteSql",
-                request_serializer=spanner.ExecuteSqlRequest.serialize,
-                response_deserializer=result_set.ResultSet.deserialize,
-            )
-        return self._stubs["execute_sql"]
-
-    @property
-    def execute_streaming_sql(
-        self,
-    ) -> Callable[[spanner.ExecuteSqlRequest], Awaitable[result_set.PartialResultSet]]:
-        r"""Return a callable for the execute streaming sql method over gRPC.
-
-        Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except
-        returns the result set as a stream. Unlike
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there is no
-        limit on the size of the returned result set. However, no
-        individual row in the result set can exceed 100 MiB, and no
-        column value can exceed 10 MiB.
-
-        The query string can be SQL or `Graph Query Language
-        (GQL) <https://cloud.google.com/spanner/docs/reference/standard-sql/graph-intro>`__.
-
-        Returns:
-            Callable[[~.ExecuteSqlRequest],
-                    Awaitable[~.PartialResultSet]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "execute_streaming_sql" not in self._stubs:
-            self._stubs["execute_streaming_sql"] = self._logged_channel.unary_stream(
-                "/google.spanner.v1.Spanner/ExecuteStreamingSql",
-                request_serializer=spanner.ExecuteSqlRequest.serialize,
-                response_deserializer=result_set.PartialResultSet.deserialize,
-            )
-        return self._stubs["execute_streaming_sql"]
-
-    @property
-    def execute_batch_dml(
-        self,
-    ) -> Callable[
-        [spanner.ExecuteBatchDmlRequest], Awaitable[spanner.ExecuteBatchDmlResponse]
-    ]:
-        r"""Return a callable for the execute batch dml method over gRPC.
-
-        Executes a batch of SQL DML statements. This method allows many
-        statements to be run with lower latency than submitting them
-        sequentially with
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-        Statements are executed in sequential order. A request can
-        succeed even if a statement fails. The
-        [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status]
-        field in the response provides information about the statement
-        that failed. Clients must inspect this field to determine
-        whether an error occurred.
-
-        Execution stops after the first failed statement; the remaining
-        statements are not executed.
-
-        Returns:
-            Callable[[~.ExecuteBatchDmlRequest],
-                    Awaitable[~.ExecuteBatchDmlResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "execute_batch_dml" not in self._stubs:
-            self._stubs["execute_batch_dml"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/ExecuteBatchDml",
-                request_serializer=spanner.ExecuteBatchDmlRequest.serialize,
-                response_deserializer=spanner.ExecuteBatchDmlResponse.deserialize,
-            )
-        return self._stubs["execute_batch_dml"]
-
-    @property
-    def read(self) -> Callable[[spanner.ReadRequest], Awaitable[result_set.ResultSet]]:
-        r"""Return a callable for the read method over gRPC.
-
-        Reads rows from the database using key lookups and scans, as a
-        simple key/value style alternative to
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]. This method
-        can't be used to return a result set larger than 10 MiB; if the
-        read matches more data than that, the read fails with a
-        ``FAILED_PRECONDITION`` error.
-
-        Reads inside read-write transactions might return ``ABORTED``.
-        If this occurs, the application should restart the transaction
-        from the beginning. See
-        [Transaction][google.spanner.v1.Transaction] for more details.
-
-        Larger result sets can be yielded in streaming fashion by
-        calling [StreamingRead][google.spanner.v1.Spanner.StreamingRead]
-        instead.
-
-        Returns:
-            Callable[[~.ReadRequest],
-                    Awaitable[~.ResultSet]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "read" not in self._stubs:
-            self._stubs["read"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/Read",
-                request_serializer=spanner.ReadRequest.serialize,
-                response_deserializer=result_set.ResultSet.deserialize,
-            )
-        return self._stubs["read"]
-
-    @property
-    def streaming_read(
-        self,
-    ) -> Callable[[spanner.ReadRequest], Awaitable[result_set.PartialResultSet]]:
-        r"""Return a callable for the streaming read method over gRPC.
-
-        Like [Read][google.spanner.v1.Spanner.Read], except returns the
-        result set as a stream. Unlike
-        [Read][google.spanner.v1.Spanner.Read], there is no limit on the
-        size of the returned result set. However, no individual row in
-        the result set can exceed 100 MiB, and no column value can
-        exceed 10 MiB.
-
-        Returns:
-            Callable[[~.ReadRequest],
-                    Awaitable[~.PartialResultSet]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "streaming_read" not in self._stubs:
-            self._stubs["streaming_read"] = self._logged_channel.unary_stream(
-                "/google.spanner.v1.Spanner/StreamingRead",
-                request_serializer=spanner.ReadRequest.serialize,
-                response_deserializer=result_set.PartialResultSet.deserialize,
-            )
-        return self._stubs["streaming_read"]
-
-    @property
-    def begin_transaction(
-        self,
-    ) -> Callable[
-        [spanner.BeginTransactionRequest], Awaitable[transaction.Transaction]
-    ]:
-        r"""Return a callable for the begin transaction method over gRPC.
-
-        Begins a new transaction. This step can often be skipped:
-        [Read][google.spanner.v1.Spanner.Read],
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-        [Commit][google.spanner.v1.Spanner.Commit] can begin a new
-        transaction as a side-effect.
-
-        Returns:
-            Callable[[~.BeginTransactionRequest],
-                    Awaitable[~.Transaction]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "begin_transaction" not in self._stubs:
-            self._stubs["begin_transaction"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/BeginTransaction",
-                request_serializer=spanner.BeginTransactionRequest.serialize,
-                response_deserializer=transaction.Transaction.deserialize,
-            )
-        return self._stubs["begin_transaction"]
-
-    @property
-    def commit(
-        self,
-    ) -> Callable[[spanner.CommitRequest], Awaitable[commit_response.CommitResponse]]:
-        r"""Return a callable for the commit method over gRPC.
-
-        Commits a transaction. The request includes the mutations to be
-        applied to rows in the database.
-
-        ``Commit`` might return an ``ABORTED`` error. This can occur at
-        any time; commonly, the cause is conflicts with concurrent
-        transactions. However, it can also happen for a variety of other
-        reasons. If ``Commit`` returns ``ABORTED``, the caller should
-        retry the transaction from the beginning, reusing the same
-        session.
-
-        On very rare occasions, ``Commit`` might return ``UNKNOWN``.
-        This can happen, for example, if the client job experiences a 1+
-        hour networking failure. At that point, Cloud Spanner has lost
-        track of the transaction outcome and we recommend that you
-        perform another read from the database to see the state of
-        things as they are now.
-
-        Returns:
-            Callable[[~.CommitRequest],
-                    Awaitable[~.CommitResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "commit" not in self._stubs:
-            self._stubs["commit"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/Commit",
-                request_serializer=spanner.CommitRequest.serialize,
-                response_deserializer=commit_response.CommitResponse.deserialize,
-            )
-        return self._stubs["commit"]
-
-    @property
-    def rollback(
-        self,
-    ) -> Callable[[spanner.RollbackRequest], Awaitable[empty_pb2.Empty]]:
-        r"""Return a callable for the rollback method over gRPC.
-
-        Rolls back a transaction, releasing any locks it holds. It's a
-        good idea to call this for any transaction that includes one or
-        more [Read][google.spanner.v1.Spanner.Read] or
-        [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and
-        ultimately decides not to commit.
-
-        ``Rollback`` returns ``OK`` if it successfully aborts the
-        transaction, the transaction was already aborted, or the
-        transaction isn't found. ``Rollback`` never returns ``ABORTED``.
-
-        Returns:
-            Callable[[~.RollbackRequest],
-                    Awaitable[~.Empty]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "rollback" not in self._stubs:
-            self._stubs["rollback"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/Rollback",
-                request_serializer=spanner.RollbackRequest.serialize,
-                response_deserializer=empty_pb2.Empty.FromString,
-            )
-        return self._stubs["rollback"]
-
-    @property
-    def partition_query(
-        self,
-    ) -> Callable[
-        [spanner.PartitionQueryRequest], Awaitable[spanner.PartitionResponse]
-    ]:
-        r"""Return a callable for the partition query method over gRPC.
-
-        Creates a set of partition tokens that can be used to execute a
-        query operation in parallel. Each of the returned partition
-        tokens can be used by
-        [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
-        to specify a subset of the query result to read. The same
-        session and read-only transaction must be used by the
-        ``PartitionQueryRequest`` used to create the partition tokens
-        and the ``ExecuteSqlRequests`` that use the partition tokens.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the query, and the whole operation must be restarted
-        from the beginning.
-
-        Returns:
-            Callable[[~.PartitionQueryRequest],
-                    Awaitable[~.PartitionResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "partition_query" not in self._stubs:
-            self._stubs["partition_query"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/PartitionQuery",
-                request_serializer=spanner.PartitionQueryRequest.serialize,
-                response_deserializer=spanner.PartitionResponse.deserialize,
-            )
-        return self._stubs["partition_query"]
-
-    @property
-    def partition_read(
-        self,
-    ) -> Callable[[spanner.PartitionReadRequest], Awaitable[spanner.PartitionResponse]]:
-        r"""Return a callable for the partition read method over gRPC.
-
-        Creates a set of partition tokens that can be used to execute a
-        read operation in parallel. Each of the returned partition
-        tokens can be used by
-        [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to
-        specify a subset of the read result to read. The same session
-        and read-only transaction must be used by the
-        ``PartitionReadRequest`` used to create the partition tokens and
-        the ``ReadRequests`` that use the partition tokens. There are no
-        ordering guarantees on rows returned among the returned
-        partition tokens, or even within each individual
-        ``StreamingRead`` call issued with a ``partition_token``.
-
-        Partition tokens become invalid when the session used to create
-        them is deleted, is idle for too long, begins a new transaction,
-        or becomes too old. When any of these happen, it isn't possible
-        to resume the read, and the whole operation must be restarted
-        from the beginning.
-
-        Returns:
-            Callable[[~.PartitionReadRequest],
-                    Awaitable[~.PartitionResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "partition_read" not in self._stubs:
-            self._stubs["partition_read"] = self._logged_channel.unary_unary(
-                "/google.spanner.v1.Spanner/PartitionRead",
-                request_serializer=spanner.PartitionReadRequest.serialize,
-                response_deserializer=spanner.PartitionResponse.deserialize,
-            )
-        return self._stubs["partition_read"]
-
-    @property
-    def batch_write(
-        self,
-    ) -> Callable[[spanner.BatchWriteRequest], Awaitable[spanner.BatchWriteResponse]]:
-        r"""Return a callable for the batch write method over gRPC.
-
-        Batches the supplied mutation groups in a collection of
-        efficient transactions. All mutations in a group are committed
-        atomically. However, mutations across groups can be committed
-        non-atomically in an unspecified order and thus, they must be
-        independent of each other. Partial failure is possible, that is,
-        some groups might have been committed successfully, while some
-        might have failed. The results of individual batches are
-        streamed into the response as the batches are applied.
-
-        ``BatchWrite`` requests are not replay protected, meaning that
-        each mutation group can be applied more than once. Replays of
-        non-idempotent mutations can have undesirable effects. For
-        example, replays of an insert mutation can produce an already
-        exists error or if you use generated or commit timestamp-based
-        keys, it can result in additional rows being added to the
-        mutation's table. We recommend structuring your mutation groups
-        to be idempotent to avoid this issue.
-
-        Returns:
-            Callable[[~.BatchWriteRequest],
-                    Awaitable[~.BatchWriteResponse]]:
-                A function that, when called, will call the underlying RPC
-                on the server.
-        """
-        # Generate a "stub function" on-the-fly which will actually make
-        # the request.
-        # gRPC handles serialization and deserialization, so we just need
-        # to pass in the functions for each.
-        if "batch_write" not in self._stubs:
-            self._stubs["batch_write"] = self._logged_channel.unary_stream(
-                "/google.spanner.v1.Spanner/BatchWrite",
-                request_serializer=spanner.BatchWriteRequest.serialize,
-                response_deserializer=spanner.BatchWriteResponse.deserialize,
-            )
-        return self._stubs["batch_write"]
-
-    def _prep_wrapped_messages(self, client_info):
-        """Precompute the wrapped methods, overriding the base class method to use async wrappers."""
-        self._wrapped_methods = {
-            self.create_session: self._wrap_method(
-                self.create_session,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.batch_create_sessions: self._wrap_method(
-                self.batch_create_sessions,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=60.0,
-                ),
-                default_timeout=60.0,
-                client_info=client_info,
-            ),
-            self.get_session: self._wrap_method(
-                self.get_session,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.list_sessions: self._wrap_method(
-                self.list_sessions,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.delete_session: self._wrap_method(
-                self.delete_session,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.execute_sql: self._wrap_method(
-                self.execute_sql,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.execute_streaming_sql: self._wrap_method(
-                self.execute_streaming_sql,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.execute_batch_dml: self._wrap_method(
-                self.execute_batch_dml,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.read: self._wrap_method(
-                self.read,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.streaming_read: self._wrap_method(
-                self.streaming_read,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.begin_transaction: self._wrap_method(
-                self.begin_transaction,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.commit: self._wrap_method(
-                self.commit,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=3600.0,
-                ),
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-            self.rollback: self._wrap_method(
-                self.rollback,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.partition_query: self._wrap_method(
-                self.partition_query,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.partition_read: self._wrap_method(
-                self.partition_read,
-                default_retry=retries.AsyncRetry(
-                    initial=0.25,
-                    maximum=32.0,
-                    multiplier=1.3,
-                    predicate=retries.if_exception_type(
-                        core_exceptions.ResourceExhausted,
-                        core_exceptions.ServiceUnavailable,
-                    ),
-                    deadline=30.0,
-                ),
-                default_timeout=30.0,
-                client_info=client_info,
-            ),
-            self.batch_write: self._wrap_method(
-                self.batch_write,
-                default_timeout=3600.0,
-                client_info=client_info,
-            ),
-        }
-
-    def _wrap_method(self, func, *args, **kwargs):
-        if self._wrap_with_kind:  # pragma: NO COVER
-            kwargs["kind"] = self.kind
-        return gapic_v1.method_async.wrap_method(func, *args, **kwargs)
-
-    def close(self):
-        return self._logged_channel.close()
-
-    @property
-    def kind(self) -> str:
-        return "grpc_asyncio"
-
-
-__all__ = ("SpannerGrpcAsyncIOTransport",)
diff --git a/google/cloud/spanner_v1/services/spanner/transports/rest.py b/google/cloud/spanner_v1/services/spanner/transports/rest.py
deleted file mode 100644
index a8c30145ff..0000000000
--- a/google/cloud/spanner_v1/services/spanner/transports/rest.py
+++ /dev/null
@@ -1,3513 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import dataclasses
-import json  # type: ignore
-import logging
-from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple, Union
-import warnings
-
-from google.api_core import exceptions as core_exceptions
-from google.api_core import gapic_v1, rest_helpers, rest_streaming
-from google.api_core import retry as retries
-from google.auth import credentials as ga_credentials  # type: ignore
-from google.auth.transport.requests import AuthorizedSession  # type: ignore
-import google.protobuf
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import json_format
-from requests import __version__ as requests_version
-
-from google.cloud.spanner_v1.metrics.metrics_interceptor import MetricsInterceptor
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    result_set,
-    spanner,
-    transaction,
-)
-
-from .base import DEFAULT_CLIENT_INFO as BASE_DEFAULT_CLIENT_INFO
-from .rest_base import _BaseSpannerRestTransport
-
-try:
-    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault, None]
-except AttributeError:  # pragma: NO COVER
-    OptionalRetry = Union[retries.Retry, object, None]  # type: ignore
-
-try:
-    from google.api_core import client_logging  # type: ignore
-
-    CLIENT_LOGGING_SUPPORTED = True  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    CLIENT_LOGGING_SUPPORTED = False
-
-_LOGGER = logging.getLogger(__name__)
-
-DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
-    gapic_version=BASE_DEFAULT_CLIENT_INFO.gapic_version,
-    grpc_version=None,
-    rest_version=f"requests@{requests_version}",
-)
-
-if hasattr(DEFAULT_CLIENT_INFO, "protobuf_runtime_version"):  # pragma: NO COVER
-    DEFAULT_CLIENT_INFO.protobuf_runtime_version = google.protobuf.__version__
-
-
-class SpannerRestInterceptor:
-    """Interceptor for Spanner.
-
-    Interceptors are used to manipulate requests, request metadata, and responses
-    in arbitrary ways.
-    Example use cases include:
-    * Logging
-    * Verifying requests according to service or custom semantics
-    * Stripping extraneous information from responses
-
-    These use cases and more can be enabled by injecting an
-    instance of a custom subclass when constructing the SpannerRestTransport.
-
-    .. code-block:: python
-        class MyCustomSpannerInterceptor(SpannerRestInterceptor):
-            def pre_batch_create_sessions(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_batch_create_sessions(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_batch_write(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_batch_write(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_begin_transaction(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_begin_transaction(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_commit(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_commit(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_create_session(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_create_session(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_delete_session(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_execute_batch_dml(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_execute_batch_dml(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_execute_sql(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_execute_sql(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_execute_streaming_sql(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_execute_streaming_sql(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_get_session(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_get_session(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_list_sessions(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_list_sessions(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_partition_query(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_partition_query(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_partition_read(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_partition_read(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_read(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_read(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-            def pre_rollback(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def pre_streaming_read(self, request, metadata):
-                logging.log(f"Received request: {request}")
-                return request, metadata
-
-            def post_streaming_read(self, response):
-                logging.log(f"Received response: {response}")
-                return response
-
-        transport = SpannerRestTransport(interceptor=MyCustomSpannerInterceptor())
-        client = SpannerClient(transport=transport)
-
-
-    """
-
-    def pre_batch_create_sessions(
-        self,
-        request: spanner.BatchCreateSessionsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner.BatchCreateSessionsRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for batch_create_sessions
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_batch_create_sessions(
-        self, response: spanner.BatchCreateSessionsResponse
-    ) -> spanner.BatchCreateSessionsResponse:
-        """Post-rpc interceptor for batch_create_sessions
-
-        DEPRECATED. Please use the `post_batch_create_sessions_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_batch_create_sessions` interceptor runs
-        before the `post_batch_create_sessions_with_metadata` interceptor.
-        """
-        return response
-
-    def post_batch_create_sessions_with_metadata(
-        self,
-        response: spanner.BatchCreateSessionsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner.BatchCreateSessionsResponse, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for batch_create_sessions
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_batch_create_sessions_with_metadata`
-        interceptor in new development instead of the `post_batch_create_sessions` interceptor.
-        When both interceptors are used, this `post_batch_create_sessions_with_metadata` interceptor runs after the
-        `post_batch_create_sessions` interceptor. The (possibly modified) response returned by
-        `post_batch_create_sessions` will be passed to
-        `post_batch_create_sessions_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_batch_write(
-        self,
-        request: spanner.BatchWriteRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.BatchWriteRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for batch_write
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_batch_write(
-        self, response: rest_streaming.ResponseIterator
-    ) -> rest_streaming.ResponseIterator:
-        """Post-rpc interceptor for batch_write
-
-        DEPRECATED. Please use the `post_batch_write_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_batch_write` interceptor runs
-        before the `post_batch_write_with_metadata` interceptor.
-        """
-        return response
-
-    def post_batch_write_with_metadata(
-        self,
-        response: rest_streaming.ResponseIterator,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        rest_streaming.ResponseIterator, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for batch_write
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_batch_write_with_metadata`
-        interceptor in new development instead of the `post_batch_write` interceptor.
-        When both interceptors are used, this `post_batch_write_with_metadata` interceptor runs after the
-        `post_batch_write` interceptor. The (possibly modified) response returned by
-        `post_batch_write` will be passed to
-        `post_batch_write_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_begin_transaction(
-        self,
-        request: spanner.BeginTransactionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner.BeginTransactionRequest, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Pre-rpc interceptor for begin_transaction
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_begin_transaction(
-        self, response: transaction.Transaction
-    ) -> transaction.Transaction:
-        """Post-rpc interceptor for begin_transaction
-
-        DEPRECATED. Please use the `post_begin_transaction_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_begin_transaction` interceptor runs
-        before the `post_begin_transaction_with_metadata` interceptor.
-        """
-        return response
-
-    def post_begin_transaction_with_metadata(
-        self,
-        response: transaction.Transaction,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[transaction.Transaction, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for begin_transaction
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_begin_transaction_with_metadata`
-        interceptor in new development instead of the `post_begin_transaction` interceptor.
-        When both interceptors are used, this `post_begin_transaction_with_metadata` interceptor runs after the
-        `post_begin_transaction` interceptor. The (possibly modified) response returned by
-        `post_begin_transaction` will be passed to
-        `post_begin_transaction_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_commit(
-        self,
-        request: spanner.CommitRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.CommitRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for commit
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_commit(
-        self, response: commit_response.CommitResponse
-    ) -> commit_response.CommitResponse:
-        """Post-rpc interceptor for commit
-
-        DEPRECATED. Please use the `post_commit_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_commit` interceptor runs
-        before the `post_commit_with_metadata` interceptor.
-        """
-        return response
-
-    def post_commit_with_metadata(
-        self,
-        response: commit_response.CommitResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[commit_response.CommitResponse, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for commit
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_commit_with_metadata`
-        interceptor in new development instead of the `post_commit` interceptor.
-        When both interceptors are used, this `post_commit_with_metadata` interceptor runs after the
-        `post_commit` interceptor. The (possibly modified) response returned by
-        `post_commit` will be passed to
-        `post_commit_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_create_session(
-        self,
-        request: spanner.CreateSessionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.CreateSessionRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for create_session
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_create_session(self, response: spanner.Session) -> spanner.Session:
-        """Post-rpc interceptor for create_session
-
-        DEPRECATED. Please use the `post_create_session_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_create_session` interceptor runs
-        before the `post_create_session_with_metadata` interceptor.
-        """
-        return response
-
-    def post_create_session_with_metadata(
-        self,
-        response: spanner.Session,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.Session, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for create_session
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_create_session_with_metadata`
-        interceptor in new development instead of the `post_create_session` interceptor.
-        When both interceptors are used, this `post_create_session_with_metadata` interceptor runs after the
-        `post_create_session` interceptor. The (possibly modified) response returned by
-        `post_create_session` will be passed to
-        `post_create_session_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_delete_session(
-        self,
-        request: spanner.DeleteSessionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.DeleteSessionRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for delete_session
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def pre_execute_batch_dml(
-        self,
-        request: spanner.ExecuteBatchDmlRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.ExecuteBatchDmlRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for execute_batch_dml
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_execute_batch_dml(
-        self, response: spanner.ExecuteBatchDmlResponse
-    ) -> spanner.ExecuteBatchDmlResponse:
-        """Post-rpc interceptor for execute_batch_dml
-
-        DEPRECATED. Please use the `post_execute_batch_dml_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_execute_batch_dml` interceptor runs
-        before the `post_execute_batch_dml_with_metadata` interceptor.
-        """
-        return response
-
-    def post_execute_batch_dml_with_metadata(
-        self,
-        response: spanner.ExecuteBatchDmlResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        spanner.ExecuteBatchDmlResponse, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for execute_batch_dml
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_execute_batch_dml_with_metadata`
-        interceptor in new development instead of the `post_execute_batch_dml` interceptor.
-        When both interceptors are used, this `post_execute_batch_dml_with_metadata` interceptor runs after the
-        `post_execute_batch_dml` interceptor. The (possibly modified) response returned by
-        `post_execute_batch_dml` will be passed to
-        `post_execute_batch_dml_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_execute_sql(
-        self,
-        request: spanner.ExecuteSqlRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.ExecuteSqlRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for execute_sql
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_execute_sql(self, response: result_set.ResultSet) -> result_set.ResultSet:
-        """Post-rpc interceptor for execute_sql
-
-        DEPRECATED. Please use the `post_execute_sql_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_execute_sql` interceptor runs
-        before the `post_execute_sql_with_metadata` interceptor.
-        """
-        return response
-
-    def post_execute_sql_with_metadata(
-        self,
-        response: result_set.ResultSet,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[result_set.ResultSet, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for execute_sql
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_execute_sql_with_metadata`
-        interceptor in new development instead of the `post_execute_sql` interceptor.
-        When both interceptors are used, this `post_execute_sql_with_metadata` interceptor runs after the
-        `post_execute_sql` interceptor. The (possibly modified) response returned by
-        `post_execute_sql` will be passed to
-        `post_execute_sql_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_execute_streaming_sql(
-        self,
-        request: spanner.ExecuteSqlRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.ExecuteSqlRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for execute_streaming_sql
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_execute_streaming_sql(
-        self, response: rest_streaming.ResponseIterator
-    ) -> rest_streaming.ResponseIterator:
-        """Post-rpc interceptor for execute_streaming_sql
-
-        DEPRECATED. Please use the `post_execute_streaming_sql_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_execute_streaming_sql` interceptor runs
-        before the `post_execute_streaming_sql_with_metadata` interceptor.
-        """
-        return response
-
-    def post_execute_streaming_sql_with_metadata(
-        self,
-        response: rest_streaming.ResponseIterator,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        rest_streaming.ResponseIterator, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for execute_streaming_sql
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_execute_streaming_sql_with_metadata`
-        interceptor in new development instead of the `post_execute_streaming_sql` interceptor.
-        When both interceptors are used, this `post_execute_streaming_sql_with_metadata` interceptor runs after the
-        `post_execute_streaming_sql` interceptor. The (possibly modified) response returned by
-        `post_execute_streaming_sql` will be passed to
-        `post_execute_streaming_sql_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_get_session(
-        self,
-        request: spanner.GetSessionRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.GetSessionRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for get_session
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_get_session(self, response: spanner.Session) -> spanner.Session:
-        """Post-rpc interceptor for get_session
-
-        DEPRECATED. Please use the `post_get_session_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_get_session` interceptor runs
-        before the `post_get_session_with_metadata` interceptor.
-        """
-        return response
-
-    def post_get_session_with_metadata(
-        self,
-        response: spanner.Session,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.Session, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for get_session
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_get_session_with_metadata`
-        interceptor in new development instead of the `post_get_session` interceptor.
-        When both interceptors are used, this `post_get_session_with_metadata` interceptor runs after the
-        `post_get_session` interceptor. The (possibly modified) response returned by
-        `post_get_session` will be passed to
-        `post_get_session_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_list_sessions(
-        self,
-        request: spanner.ListSessionsRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.ListSessionsRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for list_sessions
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_list_sessions(
-        self, response: spanner.ListSessionsResponse
-    ) -> spanner.ListSessionsResponse:
-        """Post-rpc interceptor for list_sessions
-
-        DEPRECATED. Please use the `post_list_sessions_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_list_sessions` interceptor runs
-        before the `post_list_sessions_with_metadata` interceptor.
-        """
-        return response
-
-    def post_list_sessions_with_metadata(
-        self,
-        response: spanner.ListSessionsResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.ListSessionsResponse, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for list_sessions
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_list_sessions_with_metadata`
-        interceptor in new development instead of the `post_list_sessions` interceptor.
-        When both interceptors are used, this `post_list_sessions_with_metadata` interceptor runs after the
-        `post_list_sessions` interceptor. The (possibly modified) response returned by
-        `post_list_sessions` will be passed to
-        `post_list_sessions_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_partition_query(
-        self,
-        request: spanner.PartitionQueryRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.PartitionQueryRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for partition_query
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_partition_query(
-        self, response: spanner.PartitionResponse
-    ) -> spanner.PartitionResponse:
-        """Post-rpc interceptor for partition_query
-
-        DEPRECATED. Please use the `post_partition_query_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_partition_query` interceptor runs
-        before the `post_partition_query_with_metadata` interceptor.
-        """
-        return response
-
-    def post_partition_query_with_metadata(
-        self,
-        response: spanner.PartitionResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.PartitionResponse, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for partition_query
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_partition_query_with_metadata`
-        interceptor in new development instead of the `post_partition_query` interceptor.
-        When both interceptors are used, this `post_partition_query_with_metadata` interceptor runs after the
-        `post_partition_query` interceptor. The (possibly modified) response returned by
-        `post_partition_query` will be passed to
-        `post_partition_query_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_partition_read(
-        self,
-        request: spanner.PartitionReadRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.PartitionReadRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for partition_read
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_partition_read(
-        self, response: spanner.PartitionResponse
-    ) -> spanner.PartitionResponse:
-        """Post-rpc interceptor for partition_read
-
-        DEPRECATED. Please use the `post_partition_read_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_partition_read` interceptor runs
-        before the `post_partition_read_with_metadata` interceptor.
-        """
-        return response
-
-    def post_partition_read_with_metadata(
-        self,
-        response: spanner.PartitionResponse,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.PartitionResponse, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for partition_read
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_partition_read_with_metadata`
-        interceptor in new development instead of the `post_partition_read` interceptor.
-        When both interceptors are used, this `post_partition_read_with_metadata` interceptor runs after the
-        `post_partition_read` interceptor. The (possibly modified) response returned by
-        `post_partition_read` will be passed to
-        `post_partition_read_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_read(
-        self,
-        request: spanner.ReadRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.ReadRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for read
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_read(self, response: result_set.ResultSet) -> result_set.ResultSet:
-        """Post-rpc interceptor for read
-
-        DEPRECATED. Please use the `post_read_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_read` interceptor runs
-        before the `post_read_with_metadata` interceptor.
-        """
-        return response
-
-    def post_read_with_metadata(
-        self,
-        response: result_set.ResultSet,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[result_set.ResultSet, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Post-rpc interceptor for read
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_read_with_metadata`
-        interceptor in new development instead of the `post_read` interceptor.
-        When both interceptors are used, this `post_read_with_metadata` interceptor runs after the
-        `post_read` interceptor. The (possibly modified) response returned by
-        `post_read` will be passed to
-        `post_read_with_metadata`.
-        """
-        return response, metadata
-
-    def pre_rollback(
-        self,
-        request: spanner.RollbackRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.RollbackRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for rollback
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def pre_streaming_read(
-        self,
-        request: spanner.ReadRequest,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[spanner.ReadRequest, Sequence[Tuple[str, Union[str, bytes]]]]:
-        """Pre-rpc interceptor for streaming_read
-
-        Override in a subclass to manipulate the request or metadata
-        before they are sent to the Spanner server.
-        """
-        return request, metadata
-
-    def post_streaming_read(
-        self, response: rest_streaming.ResponseIterator
-    ) -> rest_streaming.ResponseIterator:
-        """Post-rpc interceptor for streaming_read
-
-        DEPRECATED. Please use the `post_streaming_read_with_metadata`
-        interceptor instead.
-
-        Override in a subclass to read or manipulate the response
-        after it is returned by the Spanner server but before
-        it is returned to user code. This `post_streaming_read` interceptor runs
-        before the `post_streaming_read_with_metadata` interceptor.
-        """
-        return response
-
-    def post_streaming_read_with_metadata(
-        self,
-        response: rest_streaming.ResponseIterator,
-        metadata: Sequence[Tuple[str, Union[str, bytes]]],
-    ) -> Tuple[
-        rest_streaming.ResponseIterator, Sequence[Tuple[str, Union[str, bytes]]]
-    ]:
-        """Post-rpc interceptor for streaming_read
-
-        Override in a subclass to read or manipulate the response or metadata after it
-        is returned by the Spanner server but before it is returned to user code.
-
-        We recommend only using this `post_streaming_read_with_metadata`
-        interceptor in new development instead of the `post_streaming_read` interceptor.
-        When both interceptors are used, this `post_streaming_read_with_metadata` interceptor runs after the
-        `post_streaming_read` interceptor. The (possibly modified) response returned by
-        `post_streaming_read` will be passed to
-        `post_streaming_read_with_metadata`.
-        """
-        return response, metadata
-
-
-@dataclasses.dataclass
-class SpannerRestStub:
-    _session: AuthorizedSession
-    _host: str
-    _interceptor: SpannerRestInterceptor
-
-
-class SpannerRestTransport(_BaseSpannerRestTransport):
-    """REST backend synchronous transport for Spanner.
-
-    Cloud Spanner API
-
-    The Cloud Spanner API can be used to manage sessions and execute
-    transactions on data stored in Cloud Spanner databases.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends JSON representations of protocol buffers over HTTP/1.1
-    """
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[ga_credentials.Credentials] = None,
-        credentials_file: Optional[str] = None,
-        scopes: Optional[Sequence[str]] = None,
-        client_cert_source_for_mtls: Optional[Callable[[], Tuple[bytes, bytes]]] = None,
-        quota_project_id: Optional[str] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        url_scheme: str = "https",
-        interceptor: Optional[SpannerRestInterceptor] = None,
-        api_audience: Optional[str] = None,
-        metrics_interceptor: Optional[MetricsInterceptor] = None,
-    ) -> None:
-        """Instantiate the transport.
-
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[google.auth.credentials.Credentials]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-
-            credentials_file (Optional[str]): Deprecated. A file with credentials that can
-                be loaded with :func:`google.auth.load_credentials_from_file`.
-                This argument is ignored if ``channel`` is provided. This argument will be
-                removed in the next major version of this library.
-            scopes (Optional(Sequence[str])): A list of scopes. This argument is
-                ignored if ``channel`` is provided.
-            client_cert_source_for_mtls (Callable[[], Tuple[bytes, bytes]]): Client
-                certificate to configure mutual TLS HTTP channel. It is ignored
-                if ``channel`` is provided.
-            quota_project_id (Optional[str]): An optional project to use for billing
-                and quota.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you are developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-            url_scheme: the protocol scheme for the API endpoint.  Normally
-                "https", but for testing or local servers,
-                "http" can be specified.
-        """
-        # Run the base constructor
-        # TODO(yon-mg): resolve other ctor params i.e. scopes, quota, etc.
-        # TODO: When custom host (api_endpoint) is set, `scopes` must *also* be set on the
-        # credentials object
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            url_scheme=url_scheme,
-            api_audience=api_audience,
-        )
-        self._session = AuthorizedSession(
-            self._credentials, default_host=self.DEFAULT_HOST
-        )
-        if client_cert_source_for_mtls:
-            self._session.configure_mtls_channel(client_cert_source_for_mtls)
-        self._interceptor = interceptor or SpannerRestInterceptor()
-        self._prep_wrapped_messages(client_info)
-
-    class _BatchCreateSessions(
-        _BaseSpannerRestTransport._BaseBatchCreateSessions, SpannerRestStub
-    ):
-        def __hash__(self):
-            return hash("SpannerRestTransport.BatchCreateSessions")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.BatchCreateSessionsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner.BatchCreateSessionsResponse:
-            r"""Call the batch create sessions method over HTTP.
-
-            Args:
-                request (~.spanner.BatchCreateSessionsRequest):
-                    The request object. The request for
-                [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.BatchCreateSessionsResponse:
-                    The response for
-                [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseBatchCreateSessions._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_batch_create_sessions(
-                request, metadata
-            )
-            transcoded_request = _BaseSpannerRestTransport._BaseBatchCreateSessions._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseSpannerRestTransport._BaseBatchCreateSessions._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseSpannerRestTransport._BaseBatchCreateSessions._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.BatchCreateSessions",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "BatchCreateSessions",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._BatchCreateSessions._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner.BatchCreateSessionsResponse()
-            pb_resp = spanner.BatchCreateSessionsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_batch_create_sessions(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_batch_create_sessions_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner.BatchCreateSessionsResponse.to_json(
-                        response
-                    )
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.batch_create_sessions",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "BatchCreateSessions",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _BatchWrite(_BaseSpannerRestTransport._BaseBatchWrite, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.BatchWrite")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-                stream=True,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.BatchWriteRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> rest_streaming.ResponseIterator:
-            r"""Call the batch write method over HTTP.
-
-            Args:
-                request (~.spanner.BatchWriteRequest):
-                    The request object. The request for
-                [BatchWrite][google.spanner.v1.Spanner.BatchWrite].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.BatchWriteResponse:
-                    The result of applying a batch of
-                mutations.
-
-            """
-
-            http_options = _BaseSpannerRestTransport._BaseBatchWrite._get_http_options()
-
-            request, metadata = self._interceptor.pre_batch_write(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseBatchWrite._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BaseBatchWrite._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseBatchWrite._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.BatchWrite",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "BatchWrite",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._BatchWrite._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = rest_streaming.ResponseIterator(response, spanner.BatchWriteResponse)
-
-            resp = self._interceptor.post_batch_write(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_batch_write_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                http_response = {
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.batch_write",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "BatchWrite",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _BeginTransaction(
-        _BaseSpannerRestTransport._BaseBeginTransaction, SpannerRestStub
-    ):
-        def __hash__(self):
-            return hash("SpannerRestTransport.BeginTransaction")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.BeginTransactionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> transaction.Transaction:
-            r"""Call the begin transaction method over HTTP.
-
-            Args:
-                request (~.spanner.BeginTransactionRequest):
-                    The request object. The request for
-                [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.transaction.Transaction:
-                    A transaction.
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseBeginTransaction._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_begin_transaction(
-                request, metadata
-            )
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseBeginTransaction._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = (
-                _BaseSpannerRestTransport._BaseBeginTransaction._get_request_body_json(
-                    transcoded_request
-                )
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseBeginTransaction._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.BeginTransaction",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "BeginTransaction",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._BeginTransaction._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = transaction.Transaction()
-            pb_resp = transaction.Transaction.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_begin_transaction(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_begin_transaction_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = transaction.Transaction.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.begin_transaction",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "BeginTransaction",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _Commit(_BaseSpannerRestTransport._BaseCommit, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.Commit")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.CommitRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> commit_response.CommitResponse:
-            r"""Call the commit method over HTTP.
-
-            Args:
-                request (~.spanner.CommitRequest):
-                    The request object. The request for
-                [Commit][google.spanner.v1.Spanner.Commit].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.commit_response.CommitResponse:
-                    The response for
-                [Commit][google.spanner.v1.Spanner.Commit].
-
-            """
-
-            http_options = _BaseSpannerRestTransport._BaseCommit._get_http_options()
-
-            request, metadata = self._interceptor.pre_commit(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseCommit._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BaseCommit._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseSpannerRestTransport._BaseCommit._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.Commit",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "Commit",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._Commit._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = commit_response.CommitResponse()
-            pb_resp = commit_response.CommitResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_commit(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_commit_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = commit_response.CommitResponse.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.commit",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "Commit",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _CreateSession(_BaseSpannerRestTransport._BaseCreateSession, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.CreateSession")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.CreateSessionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner.Session:
-            r"""Call the create session method over HTTP.
-
-            Args:
-                request (~.spanner.CreateSessionRequest):
-                    The request object. The request for
-                [CreateSession][google.spanner.v1.Spanner.CreateSession].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.Session:
-                    A session in the Cloud Spanner API.
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseCreateSession._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_create_session(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseCreateSession._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BaseCreateSession._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseCreateSession._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.CreateSession",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "CreateSession",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._CreateSession._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner.Session()
-            pb_resp = spanner.Session.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_create_session(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_create_session_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner.Session.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.create_session",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "CreateSession",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _DeleteSession(_BaseSpannerRestTransport._BaseDeleteSession, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.DeleteSession")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.DeleteSessionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the delete session method over HTTP.
-
-            Args:
-                request (~.spanner.DeleteSessionRequest):
-                    The request object. The request for
-                [DeleteSession][google.spanner.v1.Spanner.DeleteSession].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseDeleteSession._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_delete_session(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseDeleteSession._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseDeleteSession._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.DeleteSession",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "DeleteSession",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._DeleteSession._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _ExecuteBatchDml(
-        _BaseSpannerRestTransport._BaseExecuteBatchDml, SpannerRestStub
-    ):
-        def __hash__(self):
-            return hash("SpannerRestTransport.ExecuteBatchDml")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.ExecuteBatchDmlRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner.ExecuteBatchDmlResponse:
-            r"""Call the execute batch dml method over HTTP.
-
-            Args:
-                request (~.spanner.ExecuteBatchDmlRequest):
-                    The request object. The request for
-                [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.ExecuteBatchDmlResponse:
-                    The response for
-                [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-                Contains a list of
-                [ResultSet][google.spanner.v1.ResultSet] messages, one
-                for each DML statement that has successfully executed,
-                in the same order as the statements in the request. If a
-                statement fails, the status in the response body
-                identifies the cause of the failure.
-
-                To check for DML statements that failed, use the
-                following approach:
-
-                1. Check the status in the response message. The
-                   [google.rpc.Code][google.rpc.Code] enum value ``OK``
-                   indicates that all statements were executed
-                   successfully.
-                2. If the status was not ``OK``, check the number of
-                   result sets in the response. If the response contains
-                   ``N`` [ResultSet][google.spanner.v1.ResultSet]
-                   messages, then statement ``N+1`` in the request
-                   failed.
-
-                Example 1:
-
-                - Request: 5 DML statements, all executed successfully.
-                - Response: 5 [ResultSet][google.spanner.v1.ResultSet]
-                  messages, with the status ``OK``.
-
-                Example 2:
-
-                - Request: 5 DML statements. The third statement has a
-                  syntax error.
-                - Response: 2 [ResultSet][google.spanner.v1.ResultSet]
-                  messages, and a syntax error (``INVALID_ARGUMENT``)
-                  status. The number of
-                  [ResultSet][google.spanner.v1.ResultSet] messages
-                  indicates that the third statement failed, and the
-                  fourth and fifth statements were not executed.
-
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseExecuteBatchDml._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_execute_batch_dml(
-                request, metadata
-            )
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseExecuteBatchDml._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = (
-                _BaseSpannerRestTransport._BaseExecuteBatchDml._get_request_body_json(
-                    transcoded_request
-                )
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseExecuteBatchDml._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.ExecuteBatchDml",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ExecuteBatchDml",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._ExecuteBatchDml._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner.ExecuteBatchDmlResponse()
-            pb_resp = spanner.ExecuteBatchDmlResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_execute_batch_dml(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_execute_batch_dml_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner.ExecuteBatchDmlResponse.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.execute_batch_dml",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ExecuteBatchDml",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ExecuteSql(_BaseSpannerRestTransport._BaseExecuteSql, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.ExecuteSql")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.ExecuteSqlRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> result_set.ResultSet:
-            r"""Call the execute sql method over HTTP.
-
-            Args:
-                request (~.spanner.ExecuteSqlRequest):
-                    The request object. The request for
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-                [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.result_set.ResultSet:
-                    Results from [Read][google.spanner.v1.Spanner.Read] or
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-            """
-
-            http_options = _BaseSpannerRestTransport._BaseExecuteSql._get_http_options()
-
-            request, metadata = self._interceptor.pre_execute_sql(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseExecuteSql._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BaseExecuteSql._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseExecuteSql._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.ExecuteSql",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ExecuteSql",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._ExecuteSql._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = result_set.ResultSet()
-            pb_resp = result_set.ResultSet.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_execute_sql(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_execute_sql_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = result_set.ResultSet.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.execute_sql",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ExecuteSql",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ExecuteStreamingSql(
-        _BaseSpannerRestTransport._BaseExecuteStreamingSql, SpannerRestStub
-    ):
-        def __hash__(self):
-            return hash("SpannerRestTransport.ExecuteStreamingSql")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-                stream=True,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.ExecuteSqlRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> rest_streaming.ResponseIterator:
-            r"""Call the execute streaming sql method over HTTP.
-
-            Args:
-                request (~.spanner.ExecuteSqlRequest):
-                    The request object. The request for
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
-                [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.result_set.PartialResultSet:
-                    Partial results from a streaming read
-                or SQL query. Streaming reads and SQL
-                queries better tolerate large result
-                sets, large rows, and large values, but
-                are a little trickier to consume.
-
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseExecuteStreamingSql._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_execute_streaming_sql(
-                request, metadata
-            )
-            transcoded_request = _BaseSpannerRestTransport._BaseExecuteStreamingSql._get_transcoded_request(
-                http_options, request
-            )
-
-            body = _BaseSpannerRestTransport._BaseExecuteStreamingSql._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseSpannerRestTransport._BaseExecuteStreamingSql._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.ExecuteStreamingSql",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ExecuteStreamingSql",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._ExecuteStreamingSql._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = rest_streaming.ResponseIterator(
-                response, result_set.PartialResultSet
-            )
-
-            resp = self._interceptor.post_execute_streaming_sql(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_execute_streaming_sql_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                http_response = {
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.execute_streaming_sql",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ExecuteStreamingSql",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _GetSession(_BaseSpannerRestTransport._BaseGetSession, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.GetSession")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.GetSessionRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner.Session:
-            r"""Call the get session method over HTTP.
-
-            Args:
-                request (~.spanner.GetSessionRequest):
-                    The request object. The request for
-                [GetSession][google.spanner.v1.Spanner.GetSession].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.Session:
-                    A session in the Cloud Spanner API.
-            """
-
-            http_options = _BaseSpannerRestTransport._BaseGetSession._get_http_options()
-
-            request, metadata = self._interceptor.pre_get_session(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseGetSession._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseGetSession._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.GetSession",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "GetSession",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._GetSession._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner.Session()
-            pb_resp = spanner.Session.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_get_session(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_get_session_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner.Session.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.get_session",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "GetSession",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _ListSessions(_BaseSpannerRestTransport._BaseListSessions, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.ListSessions")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.ListSessionsRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner.ListSessionsResponse:
-            r"""Call the list sessions method over HTTP.
-
-            Args:
-                request (~.spanner.ListSessionsRequest):
-                    The request object. The request for
-                [ListSessions][google.spanner.v1.Spanner.ListSessions].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.ListSessionsResponse:
-                    The response for
-                [ListSessions][google.spanner.v1.Spanner.ListSessions].
-
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseListSessions._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_list_sessions(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseListSessions._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseListSessions._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.ListSessions",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ListSessions",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._ListSessions._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner.ListSessionsResponse()
-            pb_resp = spanner.ListSessionsResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_list_sessions(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_list_sessions_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner.ListSessionsResponse.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.list_sessions",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "ListSessions",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _PartitionQuery(
-        _BaseSpannerRestTransport._BasePartitionQuery, SpannerRestStub
-    ):
-        def __hash__(self):
-            return hash("SpannerRestTransport.PartitionQuery")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.PartitionQueryRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner.PartitionResponse:
-            r"""Call the partition query method over HTTP.
-
-            Args:
-                request (~.spanner.PartitionQueryRequest):
-                    The request object. The request for
-                [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.PartitionResponse:
-                    The response for
-                [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-                or
-                [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BasePartitionQuery._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_partition_query(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BasePartitionQuery._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BasePartitionQuery._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BasePartitionQuery._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.PartitionQuery",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "PartitionQuery",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._PartitionQuery._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner.PartitionResponse()
-            pb_resp = spanner.PartitionResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_partition_query(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_partition_query_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner.PartitionResponse.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.partition_query",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "PartitionQuery",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _PartitionRead(_BaseSpannerRestTransport._BasePartitionRead, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.PartitionRead")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.PartitionReadRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> spanner.PartitionResponse:
-            r"""Call the partition read method over HTTP.
-
-            Args:
-                request (~.spanner.PartitionReadRequest):
-                    The request object. The request for
-                [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.spanner.PartitionResponse:
-                    The response for
-                [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-                or
-                [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BasePartitionRead._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_partition_read(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BasePartitionRead._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BasePartitionRead._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BasePartitionRead._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.PartitionRead",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "PartitionRead",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._PartitionRead._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = spanner.PartitionResponse()
-            pb_resp = spanner.PartitionResponse.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_partition_read(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_partition_read_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = spanner.PartitionResponse.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.partition_read",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "PartitionRead",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _Read(_BaseSpannerRestTransport._BaseRead, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.Read")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.ReadRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> result_set.ResultSet:
-            r"""Call the read method over HTTP.
-
-            Args:
-                request (~.spanner.ReadRequest):
-                    The request object. The request for [Read][google.spanner.v1.Spanner.Read]
-                and
-                [StreamingRead][google.spanner.v1.Spanner.StreamingRead].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.result_set.ResultSet:
-                    Results from [Read][google.spanner.v1.Spanner.Read] or
-                [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-            """
-
-            http_options = _BaseSpannerRestTransport._BaseRead._get_http_options()
-
-            request, metadata = self._interceptor.pre_read(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseRead._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BaseRead._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = _BaseSpannerRestTransport._BaseRead._get_query_params_json(
-                transcoded_request
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.Read",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "Read",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._Read._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = result_set.ResultSet()
-            pb_resp = result_set.ResultSet.pb(resp)
-
-            json_format.Parse(response.content, pb_resp, ignore_unknown_fields=True)
-
-            resp = self._interceptor.post_read(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_read_with_metadata(resp, response_metadata)
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                try:
-                    response_payload = result_set.ResultSet.to_json(response)
-                except:
-                    response_payload = None
-                http_response = {
-                    "payload": response_payload,
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.read",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "Read",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    class _Rollback(_BaseSpannerRestTransport._BaseRollback, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.Rollback")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.RollbackRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ):
-            r"""Call the rollback method over HTTP.
-
-            Args:
-                request (~.spanner.RollbackRequest):
-                    The request object. The request for
-                [Rollback][google.spanner.v1.Spanner.Rollback].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-            """
-
-            http_options = _BaseSpannerRestTransport._BaseRollback._get_http_options()
-
-            request, metadata = self._interceptor.pre_rollback(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseRollback._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BaseRollback._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseRollback._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = json_format.MessageToJson(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.Rollback",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "Rollback",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._Rollback._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-    class _StreamingRead(_BaseSpannerRestTransport._BaseStreamingRead, SpannerRestStub):
-        def __hash__(self):
-            return hash("SpannerRestTransport.StreamingRead")
-
-        @staticmethod
-        def _get_response(
-            host,
-            metadata,
-            query_params,
-            session,
-            timeout,
-            transcoded_request,
-            body=None,
-        ):
-            uri = transcoded_request["uri"]
-            method = transcoded_request["method"]
-            headers = dict(metadata)
-            headers["Content-Type"] = "application/json"
-            response = getattr(session, method)(
-                "{host}{uri}".format(host=host, uri=uri),
-                timeout=timeout,
-                headers=headers,
-                params=rest_helpers.flatten_query_params(query_params, strict=True),
-                data=body,
-                stream=True,
-            )
-            return response
-
-        def __call__(
-            self,
-            request: spanner.ReadRequest,
-            *,
-            retry: OptionalRetry = gapic_v1.method.DEFAULT,
-            timeout: Optional[float] = None,
-            metadata: Sequence[Tuple[str, Union[str, bytes]]] = (),
-        ) -> rest_streaming.ResponseIterator:
-            r"""Call the streaming read method over HTTP.
-
-            Args:
-                request (~.spanner.ReadRequest):
-                    The request object. The request for [Read][google.spanner.v1.Spanner.Read]
-                and
-                [StreamingRead][google.spanner.v1.Spanner.StreamingRead].
-                retry (google.api_core.retry.Retry): Designation of what errors, if any,
-                    should be retried.
-                timeout (float): The timeout for this request.
-                metadata (Sequence[Tuple[str, Union[str, bytes]]]): Key/value pairs which should be
-                    sent along with the request as metadata. Normally, each value must be of type `str`,
-                    but for metadata keys ending with the suffix `-bin`, the corresponding values must
-                    be of type `bytes`.
-
-            Returns:
-                ~.result_set.PartialResultSet:
-                    Partial results from a streaming read
-                or SQL query. Streaming reads and SQL
-                queries better tolerate large result
-                sets, large rows, and large values, but
-                are a little trickier to consume.
-
-            """
-
-            http_options = (
-                _BaseSpannerRestTransport._BaseStreamingRead._get_http_options()
-            )
-
-            request, metadata = self._interceptor.pre_streaming_read(request, metadata)
-            transcoded_request = (
-                _BaseSpannerRestTransport._BaseStreamingRead._get_transcoded_request(
-                    http_options, request
-                )
-            )
-
-            body = _BaseSpannerRestTransport._BaseStreamingRead._get_request_body_json(
-                transcoded_request
-            )
-
-            # Jsonify the query params
-            query_params = (
-                _BaseSpannerRestTransport._BaseStreamingRead._get_query_params_json(
-                    transcoded_request
-                )
-            )
-
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                request_url = "{host}{uri}".format(
-                    host=self._host, uri=transcoded_request["uri"]
-                )
-                method = transcoded_request["method"]
-                try:
-                    request_payload = type(request).to_json(request)
-                except:
-                    request_payload = None
-                http_request = {
-                    "payload": request_payload,
-                    "requestMethod": method,
-                    "requestUrl": request_url,
-                    "headers": dict(metadata),
-                }
-                _LOGGER.debug(
-                    f"Sending request for google.spanner_v1.SpannerClient.StreamingRead",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "StreamingRead",
-                        "httpRequest": http_request,
-                        "metadata": http_request["headers"],
-                    },
-                )
-
-            # Send the request
-            response = SpannerRestTransport._StreamingRead._get_response(
-                self._host,
-                metadata,
-                query_params,
-                self._session,
-                timeout,
-                transcoded_request,
-                body,
-            )
-
-            # In case of error, raise the appropriate core_exceptions.GoogleAPICallError exception
-            # subclass.
-            if response.status_code >= 400:
-                raise core_exceptions.from_http_response(response)
-
-            # Return the response
-            resp = rest_streaming.ResponseIterator(
-                response, result_set.PartialResultSet
-            )
-
-            resp = self._interceptor.post_streaming_read(resp)
-            response_metadata = [(k, str(v)) for k, v in response.headers.items()]
-            resp, _ = self._interceptor.post_streaming_read_with_metadata(
-                resp, response_metadata
-            )
-            if CLIENT_LOGGING_SUPPORTED and _LOGGER.isEnabledFor(
-                logging.DEBUG
-            ):  # pragma: NO COVER
-                http_response = {
-                    "headers": dict(response.headers),
-                    "status": response.status_code,
-                }
-                _LOGGER.debug(
-                    "Received response for google.spanner_v1.SpannerClient.streaming_read",
-                    extra={
-                        "serviceName": "google.spanner.v1.Spanner",
-                        "rpcName": "StreamingRead",
-                        "metadata": http_response["headers"],
-                        "httpResponse": http_response,
-                    },
-                )
-            return resp
-
-    @property
-    def batch_create_sessions(
-        self,
-    ) -> Callable[
-        [spanner.BatchCreateSessionsRequest], spanner.BatchCreateSessionsResponse
-    ]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._BatchCreateSessions(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def batch_write(
-        self,
-    ) -> Callable[[spanner.BatchWriteRequest], spanner.BatchWriteResponse]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._BatchWrite(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def begin_transaction(
-        self,
-    ) -> Callable[[spanner.BeginTransactionRequest], transaction.Transaction]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._BeginTransaction(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def commit(
-        self,
-    ) -> Callable[[spanner.CommitRequest], commit_response.CommitResponse]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._Commit(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def create_session(
-        self,
-    ) -> Callable[[spanner.CreateSessionRequest], spanner.Session]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._CreateSession(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def delete_session(
-        self,
-    ) -> Callable[[spanner.DeleteSessionRequest], empty_pb2.Empty]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._DeleteSession(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def execute_batch_dml(
-        self,
-    ) -> Callable[[spanner.ExecuteBatchDmlRequest], spanner.ExecuteBatchDmlResponse]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ExecuteBatchDml(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def execute_sql(
-        self,
-    ) -> Callable[[spanner.ExecuteSqlRequest], result_set.ResultSet]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ExecuteSql(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def execute_streaming_sql(
-        self,
-    ) -> Callable[[spanner.ExecuteSqlRequest], result_set.PartialResultSet]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ExecuteStreamingSql(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def get_session(self) -> Callable[[spanner.GetSessionRequest], spanner.Session]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._GetSession(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def list_sessions(
-        self,
-    ) -> Callable[[spanner.ListSessionsRequest], spanner.ListSessionsResponse]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._ListSessions(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def partition_query(
-        self,
-    ) -> Callable[[spanner.PartitionQueryRequest], spanner.PartitionResponse]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._PartitionQuery(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def partition_read(
-        self,
-    ) -> Callable[[spanner.PartitionReadRequest], spanner.PartitionResponse]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._PartitionRead(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def read(self) -> Callable[[spanner.ReadRequest], result_set.ResultSet]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._Read(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def rollback(self) -> Callable[[spanner.RollbackRequest], empty_pb2.Empty]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._Rollback(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def streaming_read(
-        self,
-    ) -> Callable[[spanner.ReadRequest], result_set.PartialResultSet]:
-        # The return type is fine, but mypy isn't sophisticated enough to determine what's going on here.
-        # In C++ this would require a dynamic_cast
-        return self._StreamingRead(self._session, self._host, self._interceptor)  # type: ignore
-
-    @property
-    def kind(self) -> str:
-        return "rest"
-
-    def close(self):
-        self._session.close()
-
-
-__all__ = ("SpannerRestTransport",)
diff --git a/google/cloud/spanner_v1/services/spanner/transports/rest_base.py b/google/cloud/spanner_v1/services/spanner/transports/rest_base.py
deleted file mode 100644
index 69b96b31da..0000000000
--- a/google/cloud/spanner_v1/services/spanner/transports/rest_base.py
+++ /dev/null
@@ -1,981 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import json  # type: ignore
-import re
-from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple, Union
-
-from google.api_core import gapic_v1, path_template
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import json_format
-
-from google.cloud.spanner_v1.metrics.metrics_interceptor import MetricsInterceptor
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    result_set,
-    spanner,
-    transaction,
-)
-
-from .base import DEFAULT_CLIENT_INFO, SpannerTransport
-
-
-class _BaseSpannerRestTransport(SpannerTransport):
-    """Base REST backend transport for Spanner.
-
-    Note: This class is not meant to be used directly. Use its sync and
-    async sub-classes instead.
-
-    This class defines the same methods as the primary client, so the
-    primary client can load the underlying transport implementation
-    and call it.
-
-    It sends JSON representations of protocol buffers over HTTP/1.1
-    """
-
-    def __init__(
-        self,
-        *,
-        host: str = "spanner.googleapis.com",
-        credentials: Optional[Any] = None,
-        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
-        always_use_jwt_access: Optional[bool] = False,
-        url_scheme: str = "https",
-        api_audience: Optional[str] = None,
-        metrics_interceptor: Optional[MetricsInterceptor] = None,
-    ) -> None:
-        """Instantiate the transport.
-        Args:
-            host (Optional[str]):
-                 The hostname to connect to (default: 'spanner.googleapis.com').
-            credentials (Optional[Any]): The
-                authorization credentials to attach to requests. These
-                credentials identify the application to the service; if none
-                are specified, the client will attempt to ascertain the
-                credentials from the environment.
-            client_info (google.api_core.gapic_v1.client_info.ClientInfo):
-                The client info used to send a user-agent string along with
-                API requests. If ``None``, then default info will be used.
-                Generally, you only need to set this if you are developing
-                your own client library.
-            always_use_jwt_access (Optional[bool]): Whether self signed JWT should
-                be used for service account credentials.
-            url_scheme: the protocol scheme for the API endpoint.  Normally
-                "https", but for testing or local servers,
-                "http" can be specified.
-        """
-        # Run the base constructor
-        maybe_url_match = re.match("^(?P<scheme>http(?:s)?://)?(?P<host>.*)$", host)
-        if maybe_url_match is None:
-            raise ValueError(
-                f"Unexpected hostname structure: {host}"
-            )  # pragma: NO COVER
-
-        url_match_items = maybe_url_match.groupdict()
-
-        host = f"{url_scheme}://{host}" if not url_match_items["scheme"] else host
-
-        super().__init__(
-            host=host,
-            credentials=credentials,
-            client_info=client_info,
-            always_use_jwt_access=always_use_jwt_access,
-            api_audience=api_audience,
-        )
-
-    class _BaseBatchCreateSessions:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{database=projects/*/instances/*/databases/*}/sessions:batchCreate",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.BatchCreateSessionsRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseBatchCreateSessions._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseBatchWrite:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:batchWrite",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.BatchWriteRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseBatchWrite._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseBeginTransaction:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:beginTransaction",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.BeginTransactionRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseBeginTransaction._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCommit:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:commit",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.CommitRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseCommit._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseCreateSession:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{database=projects/*/instances/*/databases/*}/sessions",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.CreateSessionRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseCreateSession._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseDeleteSession:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "delete",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/sessions/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.DeleteSessionRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseDeleteSession._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseExecuteBatchDml:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:executeBatchDml",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.ExecuteBatchDmlRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseExecuteBatchDml._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseExecuteSql:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:executeSql",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.ExecuteSqlRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseExecuteSql._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseExecuteStreamingSql:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:executeStreamingSql",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.ExecuteSqlRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseExecuteStreamingSql._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseGetSession:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{name=projects/*/instances/*/databases/*/sessions/*}",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.GetSessionRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseGetSession._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseListSessions:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "get",
-                    "uri": "/v1/{database=projects/*/instances/*/databases/*}/sessions",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.ListSessionsRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseListSessions._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BasePartitionQuery:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:partitionQuery",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.PartitionQueryRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BasePartitionQuery._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BasePartitionRead:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:partitionRead",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.PartitionReadRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BasePartitionRead._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseRead:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:read",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.ReadRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseRead._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseRollback:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:rollback",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.RollbackRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseRollback._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-    class _BaseStreamingRead:
-        def __hash__(self):  # pragma: NO COVER
-            return NotImplementedError("__hash__ must be implemented.")
-
-        __REQUIRED_FIELDS_DEFAULT_VALUES: Dict[str, Any] = {}
-
-        @classmethod
-        def _get_unset_required_fields(cls, message_dict):
-            return {
-                k: v
-                for k, v in cls.__REQUIRED_FIELDS_DEFAULT_VALUES.items()
-                if k not in message_dict
-            }
-
-        @staticmethod
-        def _get_http_options():
-            http_options: List[Dict[str, str]] = [
-                {
-                    "method": "post",
-                    "uri": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:streamingRead",
-                    "body": "*",
-                },
-            ]
-            return http_options
-
-        @staticmethod
-        def _get_transcoded_request(http_options, request):
-            pb_request = spanner.ReadRequest.pb(request)
-            transcoded_request = path_template.transcode(http_options, pb_request)
-            return transcoded_request
-
-        @staticmethod
-        def _get_request_body_json(transcoded_request):
-            # Jsonify the request body
-
-            body = json_format.MessageToJson(
-                transcoded_request["body"], use_integers_for_enums=True
-            )
-            return body
-
-        @staticmethod
-        def _get_query_params_json(transcoded_request):
-            query_params = json.loads(
-                json_format.MessageToJson(
-                    transcoded_request["query_params"],
-                    use_integers_for_enums=True,
-                )
-            )
-            query_params.update(
-                _BaseSpannerRestTransport._BaseStreamingRead._get_unset_required_fields(
-                    query_params
-                )
-            )
-
-            query_params["$alt"] = "json;enum-encoding=int"
-            return query_params
-
-
-__all__ = ("_BaseSpannerRestTransport",)
diff --git a/google/cloud/spanner_v1/types/__init__.py b/google/cloud/spanner_v1/types/__init__.py
deleted file mode 100644
index 059003b78f..0000000000
--- a/google/cloud/spanner_v1/types/__init__.py
+++ /dev/null
@@ -1,117 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from .change_stream import ChangeStreamRecord
-from .commit_response import CommitResponse
-from .keys import KeyRange, KeySet
-from .location import (
-    CacheUpdate,
-    Group,
-    KeyRecipe,
-    Range,
-    RecipeList,
-    RoutingHint,
-    Tablet,
-)
-from .mutation import Mutation
-from .query_plan import PlanNode, QueryAdvisorResult, QueryPlan
-from .result_set import PartialResultSet, ResultSet, ResultSetMetadata, ResultSetStats
-from .spanner import (
-    BatchCreateSessionsRequest,
-    BatchCreateSessionsResponse,
-    BatchWriteRequest,
-    BatchWriteResponse,
-    BeginTransactionRequest,
-    CommitRequest,
-    CreateSessionRequest,
-    DeleteSessionRequest,
-    DirectedReadOptions,
-    ExecuteBatchDmlRequest,
-    ExecuteBatchDmlResponse,
-    ExecuteSqlRequest,
-    GetSessionRequest,
-    ListSessionsRequest,
-    ListSessionsResponse,
-    Partition,
-    PartitionOptions,
-    PartitionQueryRequest,
-    PartitionReadRequest,
-    PartitionResponse,
-    ReadRequest,
-    RequestOptions,
-    RollbackRequest,
-    Session,
-)
-from .transaction import (
-    MultiplexedSessionPrecommitToken,
-    Transaction,
-    TransactionOptions,
-    TransactionSelector,
-)
-from .type import StructType, Type, TypeAnnotationCode, TypeCode
-
-__all__ = (
-    "ChangeStreamRecord",
-    "CommitResponse",
-    "KeyRange",
-    "KeySet",
-    "CacheUpdate",
-    "Group",
-    "KeyRecipe",
-    "Range",
-    "RecipeList",
-    "RoutingHint",
-    "Tablet",
-    "Mutation",
-    "PlanNode",
-    "QueryAdvisorResult",
-    "QueryPlan",
-    "PartialResultSet",
-    "ResultSet",
-    "ResultSetMetadata",
-    "ResultSetStats",
-    "BatchCreateSessionsRequest",
-    "BatchCreateSessionsResponse",
-    "BatchWriteRequest",
-    "BatchWriteResponse",
-    "BeginTransactionRequest",
-    "CommitRequest",
-    "CreateSessionRequest",
-    "DeleteSessionRequest",
-    "DirectedReadOptions",
-    "ExecuteBatchDmlRequest",
-    "ExecuteBatchDmlResponse",
-    "ExecuteSqlRequest",
-    "GetSessionRequest",
-    "ListSessionsRequest",
-    "ListSessionsResponse",
-    "Partition",
-    "PartitionOptions",
-    "PartitionQueryRequest",
-    "PartitionReadRequest",
-    "PartitionResponse",
-    "ReadRequest",
-    "RequestOptions",
-    "RollbackRequest",
-    "Session",
-    "MultiplexedSessionPrecommitToken",
-    "Transaction",
-    "TransactionOptions",
-    "TransactionSelector",
-    "StructType",
-    "Type",
-    "TypeAnnotationCode",
-    "TypeCode",
-)
diff --git a/google/cloud/spanner_v1/types/change_stream.py b/google/cloud/spanner_v1/types/change_stream.py
deleted file mode 100644
index ef7724912a..0000000000
--- a/google/cloud/spanner_v1/types/change_stream.py
+++ /dev/null
@@ -1,699 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.types import type as gs_type
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "ChangeStreamRecord",
-    },
-)
-
-
-class ChangeStreamRecord(proto.Message):
-    r"""Spanner Change Streams enable customers to capture and stream out
-    changes to their Spanner databases in real-time. A change stream can
-    be created with option partition_mode='IMMUTABLE_KEY_RANGE' or
-    partition_mode='MUTABLE_KEY_RANGE'.
-
-    This message is only used in Change Streams created with the option
-    partition_mode='MUTABLE_KEY_RANGE'. Spanner automatically creates a
-    special Table-Valued Function (TVF) along with each Change Streams.
-    The function provides access to the change stream's records. The
-    function is named READ\_<change_stream_name> (where
-    <change_stream_name> is the name of the change stream), and it
-    returns a table with only one column called ChangeRecord.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        data_change_record (google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord):
-            Data change record describing a data change
-            for a change stream partition.
-
-            This field is a member of `oneof`_ ``record``.
-        heartbeat_record (google.cloud.spanner_v1.types.ChangeStreamRecord.HeartbeatRecord):
-            Heartbeat record describing a heartbeat for a
-            change stream partition.
-
-            This field is a member of `oneof`_ ``record``.
-        partition_start_record (google.cloud.spanner_v1.types.ChangeStreamRecord.PartitionStartRecord):
-            Partition start record describing a new
-            change stream partition.
-
-            This field is a member of `oneof`_ ``record``.
-        partition_end_record (google.cloud.spanner_v1.types.ChangeStreamRecord.PartitionEndRecord):
-            Partition end record describing a terminated
-            change stream partition.
-
-            This field is a member of `oneof`_ ``record``.
-        partition_event_record (google.cloud.spanner_v1.types.ChangeStreamRecord.PartitionEventRecord):
-            Partition event record describing key range
-            changes for a change stream partition.
-
-            This field is a member of `oneof`_ ``record``.
-    """
-
-    class DataChangeRecord(proto.Message):
-        r"""A data change record contains a set of changes to a table
-        with the same modification type (insert, update, or delete)
-        committed at the same commit timestamp in one change stream
-        partition for the same transaction. Multiple data change records
-        can be returned for the same transaction across multiple change
-        stream partitions.
-
-        Attributes:
-            commit_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-                Indicates the timestamp in which the change was committed.
-                DataChangeRecord.commit_timestamps,
-                PartitionStartRecord.start_timestamps,
-                PartitionEventRecord.commit_timestamps, and
-                PartitionEndRecord.end_timestamps can have the same value in
-                the same partition.
-            record_sequence (str):
-                Record sequence numbers are unique and monotonically
-                increasing (but not necessarily contiguous) for a specific
-                timestamp across record types in the same partition. To
-                guarantee ordered processing, the reader should process
-                records (of potentially different types) in record_sequence
-                order for a specific timestamp in the same partition.
-
-                The record sequence number ordering across partitions is
-                only meaningful in the context of a specific transaction.
-                Record sequence numbers are unique across partitions for a
-                specific transaction. Sort the DataChangeRecords for the
-                same
-                [server_transaction_id][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.server_transaction_id]
-                by
-                [record_sequence][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.record_sequence]
-                to reconstruct the ordering of the changes within the
-                transaction.
-            server_transaction_id (str):
-                Provides a globally unique string that represents the
-                transaction in which the change was committed. Multiple
-                transactions can have the same commit timestamp, but each
-                transaction has a unique server_transaction_id.
-            is_last_record_in_transaction_in_partition (bool):
-                Indicates whether this is the last record for
-                a transaction in the  current partition. Clients
-                can use this field to determine when all
-                records for a transaction in the current
-                partition have been received.
-            table (str):
-                Name of the table affected by the change.
-            column_metadata (MutableSequence[google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord.ColumnMetadata]):
-                Provides metadata describing the columns associated with the
-                [mods][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.mods]
-                listed below.
-            mods (MutableSequence[google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord.Mod]):
-                Describes the changes that were made.
-            mod_type (google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord.ModType):
-                Describes the type of change.
-            value_capture_type (google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord.ValueCaptureType):
-                Describes the value capture type that was
-                specified in the change stream configuration
-                when this change was captured.
-            number_of_records_in_transaction (int):
-                Indicates the number of data change records
-                that are part of this transaction across all
-                change stream partitions. This value can be used
-                to assemble all the records associated with a
-                particular transaction.
-            number_of_partitions_in_transaction (int):
-                Indicates the number of partitions that
-                return data change records for this transaction.
-                This value can be helpful in assembling all
-                records associated with a particular
-                transaction.
-            transaction_tag (str):
-                Indicates the transaction tag associated with
-                this transaction.
-            is_system_transaction (bool):
-                Indicates whether the transaction is a system
-                transaction. System transactions include those
-                issued by time-to-live (TTL), column backfill,
-                etc.
-        """
-
-        class ModType(proto.Enum):
-            r"""Mod type describes the type of change Spanner applied to the data.
-            For example, if the client submits an INSERT_OR_UPDATE request,
-            Spanner will perform an insert if there is no existing row and
-            return ModType INSERT. Alternatively, if there is an existing row,
-            Spanner will perform an update and return ModType UPDATE.
-
-            Values:
-                MOD_TYPE_UNSPECIFIED (0):
-                    Not specified.
-                INSERT (10):
-                    Indicates data was inserted.
-                UPDATE (20):
-                    Indicates existing data was updated.
-                DELETE (30):
-                    Indicates existing data was deleted.
-            """
-            MOD_TYPE_UNSPECIFIED = 0
-            INSERT = 10
-            UPDATE = 20
-            DELETE = 30
-
-        class ValueCaptureType(proto.Enum):
-            r"""Value capture type describes which values are recorded in the
-            data change record.
-
-            Values:
-                VALUE_CAPTURE_TYPE_UNSPECIFIED (0):
-                    Not specified.
-                OLD_AND_NEW_VALUES (10):
-                    Records both old and new values of the
-                    modified watched columns.
-                NEW_VALUES (20):
-                    Records only new values of the modified
-                    watched columns.
-                NEW_ROW (30):
-                    Records new values of all watched columns,
-                    including modified and unmodified columns.
-                NEW_ROW_AND_OLD_VALUES (40):
-                    Records the new values of all watched
-                    columns, including modified and unmodified
-                    columns. Also records the old values of the
-                    modified columns.
-            """
-            VALUE_CAPTURE_TYPE_UNSPECIFIED = 0
-            OLD_AND_NEW_VALUES = 10
-            NEW_VALUES = 20
-            NEW_ROW = 30
-            NEW_ROW_AND_OLD_VALUES = 40
-
-        class ColumnMetadata(proto.Message):
-            r"""Metadata for a column.
-
-            Attributes:
-                name (str):
-                    Name of the column.
-                type_ (google.cloud.spanner_v1.types.Type):
-                    Type of the column.
-                is_primary_key (bool):
-                    Indicates whether the column is a primary key
-                    column.
-                ordinal_position (int):
-                    Ordinal position of the column based on the
-                    original table definition in the schema starting
-                    with a value of 1.
-            """
-
-            name: str = proto.Field(
-                proto.STRING,
-                number=1,
-            )
-            type_: gs_type.Type = proto.Field(
-                proto.MESSAGE,
-                number=2,
-                message=gs_type.Type,
-            )
-            is_primary_key: bool = proto.Field(
-                proto.BOOL,
-                number=3,
-            )
-            ordinal_position: int = proto.Field(
-                proto.INT64,
-                number=4,
-            )
-
-        class ModValue(proto.Message):
-            r"""Returns the value and associated metadata for a particular field of
-            the
-            [Mod][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.Mod].
-
-            Attributes:
-                column_metadata_index (int):
-                    Index within the repeated
-                    [column_metadata][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.column_metadata]
-                    field, to obtain the column metadata for the column that was
-                    modified.
-                value (google.protobuf.struct_pb2.Value):
-                    The value of the column.
-            """
-
-            column_metadata_index: int = proto.Field(
-                proto.INT32,
-                number=1,
-            )
-            value: struct_pb2.Value = proto.Field(
-                proto.MESSAGE,
-                number=2,
-                message=struct_pb2.Value,
-            )
-
-        class Mod(proto.Message):
-            r"""A mod describes all data changes in a watched table row.
-
-            Attributes:
-                keys (MutableSequence[google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord.ModValue]):
-                    Returns the value of the primary key of the
-                    modified row.
-                old_values (MutableSequence[google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord.ModValue]):
-                    Returns the old values before the change for the modified
-                    columns. Always empty for
-                    [INSERT][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.ModType.INSERT],
-                    or if old values are not being captured specified by
-                    [value_capture_type][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.ValueCaptureType].
-                new_values (MutableSequence[google.cloud.spanner_v1.types.ChangeStreamRecord.DataChangeRecord.ModValue]):
-                    Returns the new values after the change for the modified
-                    columns. Always empty for
-                    [DELETE][google.spanner.v1.ChangeStreamRecord.DataChangeRecord.ModType.DELETE].
-            """
-
-            keys: MutableSequence[
-                "ChangeStreamRecord.DataChangeRecord.ModValue"
-            ] = proto.RepeatedField(
-                proto.MESSAGE,
-                number=1,
-                message="ChangeStreamRecord.DataChangeRecord.ModValue",
-            )
-            old_values: MutableSequence[
-                "ChangeStreamRecord.DataChangeRecord.ModValue"
-            ] = proto.RepeatedField(
-                proto.MESSAGE,
-                number=2,
-                message="ChangeStreamRecord.DataChangeRecord.ModValue",
-            )
-            new_values: MutableSequence[
-                "ChangeStreamRecord.DataChangeRecord.ModValue"
-            ] = proto.RepeatedField(
-                proto.MESSAGE,
-                number=3,
-                message="ChangeStreamRecord.DataChangeRecord.ModValue",
-            )
-
-        commit_timestamp: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=1,
-            message=timestamp_pb2.Timestamp,
-        )
-        record_sequence: str = proto.Field(
-            proto.STRING,
-            number=2,
-        )
-        server_transaction_id: str = proto.Field(
-            proto.STRING,
-            number=3,
-        )
-        is_last_record_in_transaction_in_partition: bool = proto.Field(
-            proto.BOOL,
-            number=4,
-        )
-        table: str = proto.Field(
-            proto.STRING,
-            number=5,
-        )
-        column_metadata: MutableSequence[
-            "ChangeStreamRecord.DataChangeRecord.ColumnMetadata"
-        ] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=6,
-            message="ChangeStreamRecord.DataChangeRecord.ColumnMetadata",
-        )
-        mods: MutableSequence[
-            "ChangeStreamRecord.DataChangeRecord.Mod"
-        ] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=7,
-            message="ChangeStreamRecord.DataChangeRecord.Mod",
-        )
-        mod_type: "ChangeStreamRecord.DataChangeRecord.ModType" = proto.Field(
-            proto.ENUM,
-            number=8,
-            enum="ChangeStreamRecord.DataChangeRecord.ModType",
-        )
-        value_capture_type: "ChangeStreamRecord.DataChangeRecord.ValueCaptureType" = (
-            proto.Field(
-                proto.ENUM,
-                number=9,
-                enum="ChangeStreamRecord.DataChangeRecord.ValueCaptureType",
-            )
-        )
-        number_of_records_in_transaction: int = proto.Field(
-            proto.INT32,
-            number=10,
-        )
-        number_of_partitions_in_transaction: int = proto.Field(
-            proto.INT32,
-            number=11,
-        )
-        transaction_tag: str = proto.Field(
-            proto.STRING,
-            number=12,
-        )
-        is_system_transaction: bool = proto.Field(
-            proto.BOOL,
-            number=13,
-        )
-
-    class HeartbeatRecord(proto.Message):
-        r"""A heartbeat record is returned as a progress indicator, when
-        there are no data changes or any other partition record types in
-        the change stream partition.
-
-        Attributes:
-            timestamp (google.protobuf.timestamp_pb2.Timestamp):
-                Indicates the timestamp at which the query
-                has returned all the records in the change
-                stream partition with timestamp <= heartbeat
-                timestamp. The heartbeat timestamp will not be
-                the same as the timestamps of other record types
-                in the same partition.
-        """
-
-        timestamp: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=1,
-            message=timestamp_pb2.Timestamp,
-        )
-
-    class PartitionStartRecord(proto.Message):
-        r"""A partition start record serves as a notification that the
-        client should schedule the partitions to be queried.
-        PartitionStartRecord returns information about one or more
-        partitions.
-
-        Attributes:
-            start_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-                Start timestamp at which the partitions should be queried to
-                return change stream records with timestamps >=
-                start_timestamp. DataChangeRecord.commit_timestamps,
-                PartitionStartRecord.start_timestamps,
-                PartitionEventRecord.commit_timestamps, and
-                PartitionEndRecord.end_timestamps can have the same value in
-                the same partition.
-            record_sequence (str):
-                Record sequence numbers are unique and monotonically
-                increasing (but not necessarily contiguous) for a specific
-                timestamp across record types in the same partition. To
-                guarantee ordered processing, the reader should process
-                records (of potentially different types) in record_sequence
-                order for a specific timestamp in the same partition.
-            partition_tokens (MutableSequence[str]):
-                Unique partition identifiers to be used in
-                queries.
-        """
-
-        start_timestamp: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=1,
-            message=timestamp_pb2.Timestamp,
-        )
-        record_sequence: str = proto.Field(
-            proto.STRING,
-            number=2,
-        )
-        partition_tokens: MutableSequence[str] = proto.RepeatedField(
-            proto.STRING,
-            number=3,
-        )
-
-    class PartitionEndRecord(proto.Message):
-        r"""A partition end record serves as a notification that the
-        client should stop reading the partition. No further records are
-        expected to be retrieved on it.
-
-        Attributes:
-            end_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-                End timestamp at which the change stream partition is
-                terminated. All changes generated by this partition will
-                have timestamps <= end_timestamp.
-                DataChangeRecord.commit_timestamps,
-                PartitionStartRecord.start_timestamps,
-                PartitionEventRecord.commit_timestamps, and
-                PartitionEndRecord.end_timestamps can have the same value in
-                the same partition. PartitionEndRecord is the last record
-                returned for a partition.
-            record_sequence (str):
-                Record sequence numbers are unique and monotonically
-                increasing (but not necessarily contiguous) for a specific
-                timestamp across record types in the same partition. To
-                guarantee ordered processing, the reader should process
-                records (of potentially different types) in record_sequence
-                order for a specific timestamp in the same partition.
-            partition_token (str):
-                Unique partition identifier describing the terminated change
-                stream partition.
-                [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEndRecord.partition_token]
-                is equal to the partition token of the change stream
-                partition currently queried to return this
-                PartitionEndRecord.
-        """
-
-        end_timestamp: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=1,
-            message=timestamp_pb2.Timestamp,
-        )
-        record_sequence: str = proto.Field(
-            proto.STRING,
-            number=2,
-        )
-        partition_token: str = proto.Field(
-            proto.STRING,
-            number=3,
-        )
-
-    class PartitionEventRecord(proto.Message):
-        r"""A partition event record describes key range changes for a change
-        stream partition. The changes to a row defined by its primary key
-        can be captured in one change stream partition for a specific time
-        range, and then be captured in a different change stream partition
-        for a different time range. This movement of key ranges across
-        change stream partitions is a reflection of activities, such as
-        Spanner's dynamic splitting and load balancing, etc. Processing this
-        event is needed if users want to guarantee processing of the changes
-        for any key in timestamp order. If time ordered processing of
-        changes for a primary key is not needed, this event can be ignored.
-        To guarantee time ordered processing for each primary key, if the
-        event describes move-ins, the reader of this partition needs to wait
-        until the readers of the source partitions have processed all
-        records with timestamps <= this
-        PartitionEventRecord.commit_timestamp, before advancing beyond this
-        PartitionEventRecord. If the event describes move-outs, the reader
-        can notify the readers of the destination partitions that they can
-        continue processing.
-
-        Attributes:
-            commit_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-                Indicates the commit timestamp at which the key range change
-                occurred. DataChangeRecord.commit_timestamps,
-                PartitionStartRecord.start_timestamps,
-                PartitionEventRecord.commit_timestamps, and
-                PartitionEndRecord.end_timestamps can have the same value in
-                the same partition.
-            record_sequence (str):
-                Record sequence numbers are unique and monotonically
-                increasing (but not necessarily contiguous) for a specific
-                timestamp across record types in the same partition. To
-                guarantee ordered processing, the reader should process
-                records (of potentially different types) in record_sequence
-                order for a specific timestamp in the same partition.
-            partition_token (str):
-                Unique partition identifier describing the partition this
-                event occurred on.
-                [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.partition_token]
-                is equal to the partition token of the change stream
-                partition currently queried to return this
-                PartitionEventRecord.
-            move_in_events (MutableSequence[google.cloud.spanner_v1.types.ChangeStreamRecord.PartitionEventRecord.MoveInEvent]):
-                Set when one or more key ranges are moved into the change
-                stream partition identified by
-                [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.partition_token].
-
-                Example: Two key ranges are moved into partition (P1) from
-                partition (P2) and partition (P3) in a single transaction at
-                timestamp T.
-
-                The PartitionEventRecord returned in P1 will reflect the
-                move as:
-
-                PartitionEventRecord { commit_timestamp: T partition_token:
-                "P1" move_in_events { source_partition_token: "P2" }
-                move_in_events { source_partition_token: "P3" } }
-
-                The PartitionEventRecord returned in P2 will reflect the
-                move as:
-
-                PartitionEventRecord { commit_timestamp: T partition_token:
-                "P2" move_out_events { destination_partition_token: "P1" } }
-
-                The PartitionEventRecord returned in P3 will reflect the
-                move as:
-
-                PartitionEventRecord { commit_timestamp: T partition_token:
-                "P3" move_out_events { destination_partition_token: "P1" } }
-            move_out_events (MutableSequence[google.cloud.spanner_v1.types.ChangeStreamRecord.PartitionEventRecord.MoveOutEvent]):
-                Set when one or more key ranges are moved out of the change
-                stream partition identified by
-                [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.partition_token].
-
-                Example: Two key ranges are moved out of partition (P1) to
-                partition (P2) and partition (P3) in a single transaction at
-                timestamp T.
-
-                The PartitionEventRecord returned in P1 will reflect the
-                move as:
-
-                PartitionEventRecord { commit_timestamp: T partition_token:
-                "P1" move_out_events { destination_partition_token: "P2" }
-                move_out_events { destination_partition_token: "P3" } }
-
-                The PartitionEventRecord returned in P2 will reflect the
-                move as:
-
-                PartitionEventRecord { commit_timestamp: T partition_token:
-                "P2" move_in_events { source_partition_token: "P1" } }
-
-                The PartitionEventRecord returned in P3 will reflect the
-                move as:
-
-                PartitionEventRecord { commit_timestamp: T partition_token:
-                "P3" move_in_events { source_partition_token: "P1" } }
-        """
-
-        class MoveInEvent(proto.Message):
-            r"""Describes move-in of the key ranges into the change stream partition
-            identified by
-            [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.partition_token].
-
-            To maintain processing the changes for a particular key in timestamp
-            order, the query processing the change stream partition identified
-            by
-            [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.partition_token]
-            should not advance beyond the partition event record commit
-            timestamp until the queries processing the source change stream
-            partitions have processed all change stream records with timestamps
-            <= the partition event record commit timestamp.
-
-            Attributes:
-                source_partition_token (str):
-                    An unique partition identifier describing the
-                    source change stream partition that recorded
-                    changes for the key range that is moving into
-                    this partition.
-            """
-
-            source_partition_token: str = proto.Field(
-                proto.STRING,
-                number=1,
-            )
-
-        class MoveOutEvent(proto.Message):
-            r"""Describes move-out of the key ranges out of the change stream
-            partition identified by
-            [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.partition_token].
-
-            To maintain processing the changes for a particular key in timestamp
-            order, the query processing the
-            [MoveOutEvent][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.MoveOutEvent]
-            in the partition identified by
-            [partition_token][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.partition_token]
-            should inform the queries processing the destination partitions that
-            they can unblock and proceed processing records past the
-            [commit_timestamp][google.spanner.v1.ChangeStreamRecord.PartitionEventRecord.commit_timestamp].
-
-            Attributes:
-                destination_partition_token (str):
-                    An unique partition identifier describing the
-                    destination change stream partition that will
-                    record changes for the key range that is moving
-                    out of this partition.
-            """
-
-            destination_partition_token: str = proto.Field(
-                proto.STRING,
-                number=1,
-            )
-
-        commit_timestamp: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=1,
-            message=timestamp_pb2.Timestamp,
-        )
-        record_sequence: str = proto.Field(
-            proto.STRING,
-            number=2,
-        )
-        partition_token: str = proto.Field(
-            proto.STRING,
-            number=3,
-        )
-        move_in_events: MutableSequence[
-            "ChangeStreamRecord.PartitionEventRecord.MoveInEvent"
-        ] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=4,
-            message="ChangeStreamRecord.PartitionEventRecord.MoveInEvent",
-        )
-        move_out_events: MutableSequence[
-            "ChangeStreamRecord.PartitionEventRecord.MoveOutEvent"
-        ] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=5,
-            message="ChangeStreamRecord.PartitionEventRecord.MoveOutEvent",
-        )
-
-    data_change_record: DataChangeRecord = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        oneof="record",
-        message=DataChangeRecord,
-    )
-    heartbeat_record: HeartbeatRecord = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        oneof="record",
-        message=HeartbeatRecord,
-    )
-    partition_start_record: PartitionStartRecord = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        oneof="record",
-        message=PartitionStartRecord,
-    )
-    partition_end_record: PartitionEndRecord = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        oneof="record",
-        message=PartitionEndRecord,
-    )
-    partition_event_record: PartitionEventRecord = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        oneof="record",
-        message=PartitionEventRecord,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/commit_response.py b/google/cloud/spanner_v1/types/commit_response.py
deleted file mode 100644
index a09997901a..0000000000
--- a/google/cloud/spanner_v1/types/commit_response.py
+++ /dev/null
@@ -1,116 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.types import location, transaction
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "CommitResponse",
-    },
-)
-
-
-class CommitResponse(proto.Message):
-    r"""The response for [Commit][google.spanner.v1.Spanner.Commit].
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        commit_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-            The Cloud Spanner timestamp at which the
-            transaction committed.
-        commit_stats (google.cloud.spanner_v1.types.CommitResponse.CommitStats):
-            The statistics about this ``Commit``. Not returned by
-            default. For more information, see
-            [CommitRequest.return_commit_stats][google.spanner.v1.CommitRequest.return_commit_stats].
-        precommit_token (google.cloud.spanner_v1.types.MultiplexedSessionPrecommitToken):
-            If specified, transaction has not committed
-            yet. You must retry the commit with the new
-            precommit token.
-
-            This field is a member of `oneof`_ ``MultiplexedSessionRetry``.
-        snapshot_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-            If ``TransactionOptions.isolation_level`` is set to
-            ``IsolationLevel.REPEATABLE_READ``, then the snapshot
-            timestamp is the timestamp at which all reads in the
-            transaction ran. This timestamp is never returned.
-        cache_update (google.cloud.spanner_v1.types.CacheUpdate):
-            Optional. A cache update expresses a set of changes the
-            client should incorporate into its location cache. The
-            client should discard the changes if they are older than the
-            data it already has. This data can be obtained in response
-            to requests that included a ``RoutingHint`` field, but may
-            also be obtained by explicit location-fetching RPCs which
-            may be added in the future.
-    """
-
-    class CommitStats(proto.Message):
-        r"""Additional statistics about a commit.
-
-        Attributes:
-            mutation_count (int):
-                The total number of mutations for the transaction. Knowing
-                the ``mutation_count`` value can help you maximize the
-                number of mutations in a transaction and minimize the number
-                of API round trips. You can also monitor this value to
-                prevent transactions from exceeding the system
-                `limit <https://cloud.google.com/spanner/quotas#limits_for_creating_reading_updating_and_deleting_data>`__.
-                If the number of mutations exceeds the limit, the server
-                returns
-                `INVALID_ARGUMENT <https://cloud.google.com/spanner/docs/reference/rest/v1/Code#ENUM_VALUES.INVALID_ARGUMENT>`__.
-        """
-
-        mutation_count: int = proto.Field(
-            proto.INT64,
-            number=1,
-        )
-
-    commit_timestamp: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message=timestamp_pb2.Timestamp,
-    )
-    commit_stats: CommitStats = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=CommitStats,
-    )
-    precommit_token: transaction.MultiplexedSessionPrecommitToken = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        oneof="MultiplexedSessionRetry",
-        message=transaction.MultiplexedSessionPrecommitToken,
-    )
-    snapshot_timestamp: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=timestamp_pb2.Timestamp,
-    )
-    cache_update: location.CacheUpdate = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message=location.CacheUpdate,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/keys.py b/google/cloud/spanner_v1/types/keys.py
deleted file mode 100644
index aafd20a136..0000000000
--- a/google/cloud/spanner_v1/types/keys.py
+++ /dev/null
@@ -1,246 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import struct_pb2  # type: ignore
-import proto  # type: ignore
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "KeyRange",
-        "KeySet",
-    },
-)
-
-
-class KeyRange(proto.Message):
-    r"""KeyRange represents a range of rows in a table or index.
-
-    A range has a start key and an end key. These keys can be open or
-    closed, indicating if the range includes rows with that key.
-
-    Keys are represented by lists, where the ith value in the list
-    corresponds to the ith component of the table or index primary key.
-    Individual values are encoded as described
-    [here][google.spanner.v1.TypeCode].
-
-    For example, consider the following table definition:
-
-    ::
-
-        CREATE TABLE UserEvents (
-          UserName STRING(MAX),
-          EventDate STRING(10)
-        ) PRIMARY KEY(UserName, EventDate);
-
-    The following keys name rows in this table:
-
-    ::
-
-        ["Bob", "2014-09-23"]
-        ["Alfred", "2015-06-12"]
-
-    Since the ``UserEvents`` table's ``PRIMARY KEY`` clause names two
-    columns, each ``UserEvents`` key has two elements; the first is the
-    ``UserName``, and the second is the ``EventDate``.
-
-    Key ranges with multiple components are interpreted
-    lexicographically by component using the table or index key's
-    declared sort order. For example, the following range returns all
-    events for user ``"Bob"`` that occurred in the year 2015:
-
-    ::
-
-        "start_closed": ["Bob", "2015-01-01"]
-        "end_closed": ["Bob", "2015-12-31"]
-
-    Start and end keys can omit trailing key components. This affects
-    the inclusion and exclusion of rows that exactly match the provided
-    key components: if the key is closed, then rows that exactly match
-    the provided components are included; if the key is open, then rows
-    that exactly match are not included.
-
-    For example, the following range includes all events for ``"Bob"``
-    that occurred during and after the year 2000:
-
-    ::
-
-        "start_closed": ["Bob", "2000-01-01"]
-        "end_closed": ["Bob"]
-
-    The next example retrieves all events for ``"Bob"``:
-
-    ::
-
-        "start_closed": ["Bob"]
-        "end_closed": ["Bob"]
-
-    To retrieve events before the year 2000:
-
-    ::
-
-        "start_closed": ["Bob"]
-        "end_open": ["Bob", "2000-01-01"]
-
-    The following range includes all rows in the table:
-
-    ::
-
-        "start_closed": []
-        "end_closed": []
-
-    This range returns all users whose ``UserName`` begins with any
-    character from A to C:
-
-    ::
-
-        "start_closed": ["A"]
-        "end_open": ["D"]
-
-    This range returns all users whose ``UserName`` begins with B:
-
-    ::
-
-        "start_closed": ["B"]
-        "end_open": ["C"]
-
-    Key ranges honor column sort order. For example, suppose a table is
-    defined as follows:
-
-    ::
-
-        CREATE TABLE DescendingSortedTable {
-          Key INT64,
-          ...
-        ) PRIMARY KEY(Key DESC);
-
-    The following range retrieves all rows with key values between 1 and
-    100 inclusive:
-
-    ::
-
-        "start_closed": ["100"]
-        "end_closed": ["1"]
-
-    Note that 100 is passed as the start, and 1 is passed as the end,
-    because ``Key`` is a descending column in the schema.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        start_closed (google.protobuf.struct_pb2.ListValue):
-            If the start is closed, then the range includes all rows
-            whose first ``len(start_closed)`` key columns exactly match
-            ``start_closed``.
-
-            This field is a member of `oneof`_ ``start_key_type``.
-        start_open (google.protobuf.struct_pb2.ListValue):
-            If the start is open, then the range excludes rows whose
-            first ``len(start_open)`` key columns exactly match
-            ``start_open``.
-
-            This field is a member of `oneof`_ ``start_key_type``.
-        end_closed (google.protobuf.struct_pb2.ListValue):
-            If the end is closed, then the range includes all rows whose
-            first ``len(end_closed)`` key columns exactly match
-            ``end_closed``.
-
-            This field is a member of `oneof`_ ``end_key_type``.
-        end_open (google.protobuf.struct_pb2.ListValue):
-            If the end is open, then the range excludes rows whose first
-            ``len(end_open)`` key columns exactly match ``end_open``.
-
-            This field is a member of `oneof`_ ``end_key_type``.
-    """
-
-    start_closed: struct_pb2.ListValue = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        oneof="start_key_type",
-        message=struct_pb2.ListValue,
-    )
-    start_open: struct_pb2.ListValue = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        oneof="start_key_type",
-        message=struct_pb2.ListValue,
-    )
-    end_closed: struct_pb2.ListValue = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        oneof="end_key_type",
-        message=struct_pb2.ListValue,
-    )
-    end_open: struct_pb2.ListValue = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        oneof="end_key_type",
-        message=struct_pb2.ListValue,
-    )
-
-
-class KeySet(proto.Message):
-    r"""``KeySet`` defines a collection of Cloud Spanner keys and/or key
-    ranges. All the keys are expected to be in the same table or index.
-    The keys need not be sorted in any particular way.
-
-    If the same key is specified multiple times in the set (for example
-    if two ranges, two keys, or a key and a range overlap), Cloud
-    Spanner behaves as if the key were only specified once.
-
-    Attributes:
-        keys (MutableSequence[google.protobuf.struct_pb2.ListValue]):
-            A list of specific keys. Entries in ``keys`` should have
-            exactly as many elements as there are columns in the primary
-            or index key with which this ``KeySet`` is used. Individual
-            key values are encoded as described
-            [here][google.spanner.v1.TypeCode].
-        ranges (MutableSequence[google.cloud.spanner_v1.types.KeyRange]):
-            A list of key ranges. See
-            [KeyRange][google.spanner.v1.KeyRange] for more information
-            about key range specifications.
-        all_ (bool):
-            For convenience ``all`` can be set to ``true`` to indicate
-            that this ``KeySet`` matches all keys in the table or index.
-            Note that any keys specified in ``keys`` or ``ranges`` are
-            only yielded once.
-    """
-
-    keys: MutableSequence[struct_pb2.ListValue] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=struct_pb2.ListValue,
-    )
-    ranges: MutableSequence["KeyRange"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=2,
-        message="KeyRange",
-    )
-    all_: bool = proto.Field(
-        proto.BOOL,
-        number=3,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/location.py b/google/cloud/spanner_v1/types/location.py
deleted file mode 100644
index 5c8a8f9454..0000000000
--- a/google/cloud/spanner_v1/types/location.py
+++ /dev/null
@@ -1,673 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import struct_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.types import type as gs_type
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "Range",
-        "Tablet",
-        "Group",
-        "KeyRecipe",
-        "RecipeList",
-        "CacheUpdate",
-        "RoutingHint",
-    },
-)
-
-
-class Range(proto.Message):
-    r"""A ``Range`` represents a range of keys in a database. The keys
-    themselves are encoded in "sortable string format", also known as
-    ssformat. Consult Spanner's open source client libraries for details
-    on the encoding.
-
-    Each range represents a contiguous range of rows, possibly from
-    multiple tables/indexes. Each range is associated with a single
-    paxos group (known as a "group" throughout this API), a split (which
-    names the exact range within the group), and a generation that can
-    be used to determine whether a given ``Range`` represents a newer or
-    older location for the key range.
-
-    Attributes:
-        start_key (bytes):
-            The start key of the range, inclusive.
-            Encoded in "sortable string format" (ssformat).
-        limit_key (bytes):
-            The limit key of the range, exclusive.
-            Encoded in "sortable string format" (ssformat).
-        group_uid (int):
-            The UID of the paxos group where this range is stored. UIDs
-            are unique within the database. References
-            ``Group.group_uid``.
-        split_id (int):
-            A group can store multiple ranges of keys. Each key range is
-            named by an ID (the split ID). Within a group, split IDs are
-            unique. The ``split_id`` names the exact split in
-            ``group_uid`` where this range is stored.
-        generation (bytes):
-            ``generation`` indicates the freshness of the range
-            information contained in this proto. Generations can be
-            compared lexicographically; if generation A is greater than
-            generation B, then the ``Range`` corresponding to A is newer
-            than the ``Range`` corresponding to B, and should be used
-            preferentially.
-    """
-
-    start_key: bytes = proto.Field(
-        proto.BYTES,
-        number=1,
-    )
-    limit_key: bytes = proto.Field(
-        proto.BYTES,
-        number=2,
-    )
-    group_uid: int = proto.Field(
-        proto.UINT64,
-        number=3,
-    )
-    split_id: int = proto.Field(
-        proto.UINT64,
-        number=4,
-    )
-    generation: bytes = proto.Field(
-        proto.BYTES,
-        number=5,
-    )
-
-
-class Tablet(proto.Message):
-    r"""A ``Tablet`` represents a single replica of a ``Group``. A tablet is
-    served by a single server at a time, and can move between servers
-    due to server death or simply load balancing.
-
-    Attributes:
-        tablet_uid (int):
-            The UID of the tablet, unique within the database. Matches
-            the ``tablet_uids`` and ``leader_tablet_uid`` fields in
-            ``Group``.
-        server_address (str):
-            The address of the server that is serving
-            this tablet -- either an IP address or DNS
-            hostname and a port number.
-        location (str):
-            Where this tablet is located. This is the
-            name of a Google Cloud region, such as
-            "us-central1".
-        role (google.cloud.spanner_v1.types.Tablet.Role):
-            The role of the tablet.
-        incarnation (bytes):
-            ``incarnation`` indicates the freshness of the tablet
-            information contained in this proto. Incarnations can be
-            compared lexicographically; if incarnation A is greater than
-            incarnation B, then the ``Tablet`` corresponding to A is
-            newer than the ``Tablet`` corresponding to B, and should be
-            used preferentially.
-        distance (int):
-            Distances help the client pick the closest tablet out of the
-            list of tablets for a given request. Tablets with lower
-            distances should generally be preferred. Tablets with the
-            same distance are approximately equally close; the client
-            can choose arbitrarily.
-
-            Distances do not correspond precisely to expected latency,
-            geographical distance, or anything else. Distances should be
-            compared only between tablets of the same group; they are
-            not meaningful between different groups.
-
-            A value of zero indicates that the tablet may be in the same
-            zone as the client, and have minimum network latency. A
-            value less than or equal to five indicates that the tablet
-            is thought to be in the same region as the client, and may
-            have a few milliseconds of network latency. Values greater
-            than five are most likely in a different region, with
-            non-trivial network latency.
-
-            Clients should use the following algorithm:
-
-            - If the request is using a directed read, eliminate any
-              tablets that do not match the directed read's target zone
-              and/or replica type.
-            - (Read-write transactions only) Choose leader tablet if it
-              has an distance <=5.
-            - Group and sort tablets by distance. Choose a random tablet
-              with the lowest distance. If the request is not a directed
-              read, only consider replicas with distances <=5.
-            - Send the request to the fallback endpoint.
-
-            The tablet picked by this algorithm may be skipped, either
-            because it is marked as ``skip`` by the server or because
-            the corresponding server is unreachable, flow controlled,
-            etc. Skipped tablets should be added to the
-            ``skipped_tablet_uid`` field in ``RoutingHint``; the
-            algorithm above should then be re-run without including the
-            skipped tablet(s) to pick the next best tablet.
-        skip (bool):
-            If true, the tablet should not be chosen by the client.
-            Typically, this signals that the tablet is unhealthy in some
-            way. Tablets with ``skip`` set to true should be reported
-            back to the server in ``RoutingHint.skipped_tablet_uid``;
-            this cues the server to send updated information for this
-            tablet should it become usable again.
-    """
-
-    class Role(proto.Enum):
-        r"""Indicates the role of the tablet.
-
-        Values:
-            ROLE_UNSPECIFIED (0):
-                Not specified.
-            READ_WRITE (1):
-                The tablet can perform reads and (if elected
-                leader) writes.
-            READ_ONLY (2):
-                The tablet can only perform reads.
-        """
-        ROLE_UNSPECIFIED = 0
-        READ_WRITE = 1
-        READ_ONLY = 2
-
-    tablet_uid: int = proto.Field(
-        proto.UINT64,
-        number=1,
-    )
-    server_address: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    location: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    role: Role = proto.Field(
-        proto.ENUM,
-        number=4,
-        enum=Role,
-    )
-    incarnation: bytes = proto.Field(
-        proto.BYTES,
-        number=5,
-    )
-    distance: int = proto.Field(
-        proto.UINT32,
-        number=6,
-    )
-    skip: bool = proto.Field(
-        proto.BOOL,
-        number=7,
-    )
-
-
-class Group(proto.Message):
-    r"""A ``Group`` represents a paxos group in a database. A group is a set
-    of tablets that are replicated across multiple servers. Groups may
-    have a leader tablet. Groups store one (or sometimes more) ranges of
-    keys.
-
-    Attributes:
-        group_uid (int):
-            The UID of the paxos group, unique within the database.
-            Matches the ``group_uid`` field in ``Range``.
-        tablets (MutableSequence[google.cloud.spanner_v1.types.Tablet]):
-            A list of tablets that are part of the group. Note that this
-            list may not be exhaustive; it will only include tablets the
-            server considers useful to the client. The returned list is
-            ordered ascending by distance.
-
-            Tablet UIDs reference ``Tablet.tablet_uid``.
-        leader_index (int):
-            The last known leader tablet of the group as an index into
-            ``tablets``. May be negative if the group has no known
-            leader.
-        generation (bytes):
-            ``generation`` indicates the freshness of the group
-            information (including leader information) contained in this
-            proto. Generations can be compared lexicographically; if
-            generation A is greater than generation B, then the
-            ``Group`` corresponding to A is newer than the ``Group``
-            corresponding to B, and should be used preferentially.
-    """
-
-    group_uid: int = proto.Field(
-        proto.UINT64,
-        number=1,
-    )
-    tablets: MutableSequence["Tablet"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=2,
-        message="Tablet",
-    )
-    leader_index: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-    generation: bytes = proto.Field(
-        proto.BYTES,
-        number=4,
-    )
-
-
-class KeyRecipe(proto.Message):
-    r"""A ``KeyRecipe`` provides the metadata required to translate reads,
-    mutations, and queries into a byte array in "sortable string format"
-    (ssformat)that can be used with ``Range``\ s to route requests. Note
-    that the client *must* tolerate ``KeyRecipe``\ s that appear to be
-    invalid, since the ``KeyRecipe`` format may change over time.
-    Requests with invalid ``KeyRecipe``\ s should be routed to a default
-    server.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        table_name (str):
-            A table name, matching the name from the
-            database schema.
-
-            This field is a member of `oneof`_ ``target``.
-        index_name (str):
-            An index name, matching the name from the
-            database schema.
-
-            This field is a member of `oneof`_ ``target``.
-        operation_uid (int):
-            The UID of a query, matching the UID from ``RoutingHint``.
-
-            This field is a member of `oneof`_ ``target``.
-        part (MutableSequence[google.cloud.spanner_v1.types.KeyRecipe.Part]):
-            Parts are in the order they should appear in
-            the encoded key.
-    """
-
-    class Part(proto.Message):
-        r"""An ssformat key is composed of a sequence of tag numbers and key
-        column values. ``Part`` represents a single tag or key column value.
-
-        This message has `oneof`_ fields (mutually exclusive fields).
-        For each oneof, at most one member field can be set at the same time.
-        Setting any member of the oneof automatically clears all other
-        members.
-
-        .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-        Attributes:
-            tag (int):
-                If non-zero, ``tag`` is the only field present in this
-                ``Part``. The part is encoded by appending ``tag`` to the
-                ssformat key.
-            order (google.cloud.spanner_v1.types.KeyRecipe.Part.Order):
-                Whether the key column is sorted ascending or descending.
-                Only present if ``tag`` is zero.
-            null_order (google.cloud.spanner_v1.types.KeyRecipe.Part.NullOrder):
-                How NULLs are represented in the encoded key part. Only
-                present if ``tag`` is zero.
-            type_ (google.cloud.spanner_v1.types.Type):
-                The type of the key part. Only present if ``tag`` is zero.
-            identifier (str):
-                ``identifier`` is the name of the column or query parameter.
-
-                This field is a member of `oneof`_ ``value_type``.
-            value (google.protobuf.struct_pb2.Value):
-                The constant value of the key part.
-                It is present when query uses a constant as a
-                part of the key.
-
-                This field is a member of `oneof`_ ``value_type``.
-            random (bool):
-                If true, the client is responsible to fill in
-                the value randomly. It's relevant only for the
-                INT64 type.
-
-                This field is a member of `oneof`_ ``value_type``.
-            struct_identifiers (MutableSequence[int]):
-                It is a repeated field to support fetching key columns from
-                nested structs, such as ``STRUCT`` query parameters.
-        """
-
-        class Order(proto.Enum):
-            r"""The remaining fields encode column values.
-
-            Values:
-                ORDER_UNSPECIFIED (0):
-                    Default value, equivalent to ``ASCENDING``.
-                ASCENDING (1):
-                    The key is ascending - corresponds to ``ASC`` in the schema
-                    definition.
-                DESCENDING (2):
-                    The key is descending - corresponds to ``DESC`` in the
-                    schema definition.
-            """
-            ORDER_UNSPECIFIED = 0
-            ASCENDING = 1
-            DESCENDING = 2
-
-        class NullOrder(proto.Enum):
-            r"""The null order of the key column. This dictates where NULL values
-            sort in the sorted order. Note that columns which are ``NOT NULL``
-            can have a special encoding.
-
-            Values:
-                NULL_ORDER_UNSPECIFIED (0):
-                    Default value. This value is unused.
-                NULLS_FIRST (1):
-                    NULL values sort before any non-NULL values.
-                NULLS_LAST (2):
-                    NULL values sort after any non-NULL values.
-                NOT_NULL (3):
-                    The column does not support NULL values.
-            """
-            NULL_ORDER_UNSPECIFIED = 0
-            NULLS_FIRST = 1
-            NULLS_LAST = 2
-            NOT_NULL = 3
-
-        tag: int = proto.Field(
-            proto.UINT32,
-            number=1,
-        )
-        order: "KeyRecipe.Part.Order" = proto.Field(
-            proto.ENUM,
-            number=2,
-            enum="KeyRecipe.Part.Order",
-        )
-        null_order: "KeyRecipe.Part.NullOrder" = proto.Field(
-            proto.ENUM,
-            number=3,
-            enum="KeyRecipe.Part.NullOrder",
-        )
-        type_: gs_type.Type = proto.Field(
-            proto.MESSAGE,
-            number=4,
-            message=gs_type.Type,
-        )
-        identifier: str = proto.Field(
-            proto.STRING,
-            number=5,
-            oneof="value_type",
-        )
-        value: struct_pb2.Value = proto.Field(
-            proto.MESSAGE,
-            number=6,
-            oneof="value_type",
-            message=struct_pb2.Value,
-        )
-        random: bool = proto.Field(
-            proto.BOOL,
-            number=8,
-            oneof="value_type",
-        )
-        struct_identifiers: MutableSequence[int] = proto.RepeatedField(
-            proto.INT32,
-            number=7,
-        )
-
-    table_name: str = proto.Field(
-        proto.STRING,
-        number=1,
-        oneof="target",
-    )
-    index_name: str = proto.Field(
-        proto.STRING,
-        number=2,
-        oneof="target",
-    )
-    operation_uid: int = proto.Field(
-        proto.UINT64,
-        number=3,
-        oneof="target",
-    )
-    part: MutableSequence[Part] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=4,
-        message=Part,
-    )
-
-
-class RecipeList(proto.Message):
-    r"""A ``RecipeList`` contains a list of ``KeyRecipe``\ s, which share
-    the same schema generation.
-
-    Attributes:
-        schema_generation (bytes):
-            The schema generation of the recipes. To be sent to the
-            server in ``RoutingHint.schema_generation`` whenever one of
-            the recipes is used. ``schema_generation`` values are
-            comparable with each other; if generation A compares greater
-            than generation B, then A is a more recent schema than B.
-            Clients should in general aim to cache only the latest
-            schema generation, and discard more stale recipes.
-        recipe (MutableSequence[google.cloud.spanner_v1.types.KeyRecipe]):
-            A list of recipes to be cached.
-    """
-
-    schema_generation: bytes = proto.Field(
-        proto.BYTES,
-        number=1,
-    )
-    recipe: MutableSequence["KeyRecipe"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=3,
-        message="KeyRecipe",
-    )
-
-
-class CacheUpdate(proto.Message):
-    r"""A ``CacheUpdate`` expresses a set of changes the client should
-    incorporate into its location cache. These changes may or may not be
-    newer than what the client has in its cache, and should be discarded
-    if necessary. ``CacheUpdate``\ s can be obtained in response to
-    requests that included a ``RoutingHint`` field, but may also be
-    obtained by explicit location-fetching RPCs which may be added in
-    the future.
-
-    Attributes:
-        database_id (int):
-            An internal ID for the database. Database
-            names can be reused if a database is deleted and
-            re-created. Each time the database is
-            re-created, it will get a new database ID, which
-            will never be re-used for any other database.
-        range_ (MutableSequence[google.cloud.spanner_v1.types.Range]):
-            A list of ranges to be cached.
-        group (MutableSequence[google.cloud.spanner_v1.types.Group]):
-            A list of groups to be cached.
-        key_recipes (google.cloud.spanner_v1.types.RecipeList):
-            A list of recipes to be cached.
-    """
-
-    database_id: int = proto.Field(
-        proto.UINT64,
-        number=1,
-    )
-    range_: MutableSequence["Range"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=2,
-        message="Range",
-    )
-    group: MutableSequence["Group"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=3,
-        message="Group",
-    )
-    key_recipes: "RecipeList" = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message="RecipeList",
-    )
-
-
-class RoutingHint(proto.Message):
-    r"""``RoutingHint`` can be optionally added to location-aware Spanner
-    requests. It gives the server hints that can be used to route the
-    request to an appropriate server, potentially significantly
-    decreasing latency and improving throughput. To achieve improved
-    performance, most fields must be filled in with accurate values.
-
-    The presence of a valid ``RoutingHint`` tells the server that the
-    client is location-aware.
-
-    ``RoutingHint`` does not change the semantics of the request; it is
-    purely a performance hint; the request will perform the same actions
-    on the database's data as if ``RoutingHint`` were not present.
-    However, if the ``RoutingHint`` is incomplete or incorrect, the
-    response may include a ``CacheUpdate`` the client can use to correct
-    its location cache.
-
-    Attributes:
-        operation_uid (int):
-            A session-scoped unique ID for the operation, computed
-            client-side. Requests with the same ``operation_uid`` should
-            have a shared 'shape', meaning that some fields are expected
-            to be the same, such as the SQL query, the target
-            table/columns (for reads) etc. Requests with the same
-            ``operation_uid`` are meant to differ only in fields like
-            keys/key ranges/query parameters, transaction IDs, etc.
-
-            ``operation_uid`` must be non-zero for ``RoutingHint`` to be
-            valid.
-        database_id (int):
-            The database ID of the database being accessed, see
-            ``CacheUpdate.database_id``. Should match the cache entries
-            that were used to generate the rest of the fields in this
-            ``RoutingHint``.
-        schema_generation (bytes):
-            The schema generation of the recipe that was used to
-            generate ``key`` and ``limit_key``. See also
-            ``RecipeList.schema_generation``.
-        key (bytes):
-            The key / key range that this request accesses. For
-            operations that access a single key, ``key`` should be set
-            and ``limit_key`` should be empty. For operations that
-            access a key range, ``key`` and ``limit_key`` should both be
-            set, to the inclusive start and exclusive end of the range
-            respectively.
-
-            The keys are encoded in "sortable string format" (ssformat),
-            using a ``KeyRecipe`` that is appropriate for the request.
-            See ``KeyRecipe`` for more details.
-        limit_key (bytes):
-            If this request targets a key range, this is the exclusive
-            end of the range. See ``key`` for more details.
-        group_uid (int):
-            The group UID of the group that the client believes serves
-            the range defined by ``key`` and ``limit_key``. See
-            ``Range.group_uid`` for more details.
-        split_id (int):
-            The split ID of the split that the client believes contains
-            the range defined by ``key`` and ``limit_key``. See
-            ``Range.split_id`` for more details.
-        tablet_uid (int):
-            The tablet UID of the tablet from group ``group_uid`` that
-            the client believes is best to serve this request. See
-            ``Group.local_tablet_uids`` and ``Group.leader_tablet_uid``.
-        skipped_tablet_uid (MutableSequence[google.cloud.spanner_v1.types.RoutingHint.SkippedTablet]):
-            If the client had multiple options for tablet selection, and
-            some of its first choices were unhealthy (e.g., the server
-            is unreachable, or ``Tablet.skip`` is true), this field will
-            contain the tablet UIDs of those tablets, with their
-            incarnations. The server may include a ``CacheUpdate`` with
-            new locations for those tablets.
-        client_location (str):
-            If present, the client's current location.
-            This should be the name of a Google Cloud zone
-            or region, such as "us-central1".
-
-            If absent, the client's location will be assumed
-            to be the same as the location of the server the
-            client ends up connected to.
-
-            Locations are primarily valuable for clients
-            that connect from regions other than the ones
-            that contain the Spanner database.
-    """
-
-    class SkippedTablet(proto.Message):
-        r"""A tablet that was skipped by the client. See ``Tablet.tablet_uid``
-        and ``Tablet.incarnation``.
-
-        Attributes:
-            tablet_uid (int):
-                The tablet UID of the tablet that was skipped. See
-                ``Tablet.tablet_uid``.
-            incarnation (bytes):
-                The incarnation of the tablet that was skipped. See
-                ``Tablet.incarnation``.
-        """
-
-        tablet_uid: int = proto.Field(
-            proto.UINT64,
-            number=1,
-        )
-        incarnation: bytes = proto.Field(
-            proto.BYTES,
-            number=2,
-        )
-
-    operation_uid: int = proto.Field(
-        proto.UINT64,
-        number=1,
-    )
-    database_id: int = proto.Field(
-        proto.UINT64,
-        number=2,
-    )
-    schema_generation: bytes = proto.Field(
-        proto.BYTES,
-        number=3,
-    )
-    key: bytes = proto.Field(
-        proto.BYTES,
-        number=4,
-    )
-    limit_key: bytes = proto.Field(
-        proto.BYTES,
-        number=5,
-    )
-    group_uid: int = proto.Field(
-        proto.UINT64,
-        number=6,
-    )
-    split_id: int = proto.Field(
-        proto.UINT64,
-        number=7,
-    )
-    tablet_uid: int = proto.Field(
-        proto.UINT64,
-        number=8,
-    )
-    skipped_tablet_uid: MutableSequence[SkippedTablet] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=9,
-        message=SkippedTablet,
-    )
-    client_location: str = proto.Field(
-        proto.STRING,
-        number=10,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/mutation.py b/google/cloud/spanner_v1/types/mutation.py
deleted file mode 100644
index 97da93335e..0000000000
--- a/google/cloud/spanner_v1/types/mutation.py
+++ /dev/null
@@ -1,294 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.types import keys
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "Mutation",
-    },
-)
-
-
-class Mutation(proto.Message):
-    r"""A modification to one or more Cloud Spanner rows. Mutations can be
-    applied to a Cloud Spanner database by sending them in a
-    [Commit][google.spanner.v1.Spanner.Commit] call.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        insert (google.cloud.spanner_v1.types.Mutation.Write):
-            Insert new rows in a table. If any of the rows already
-            exist, the write or transaction fails with error
-            ``ALREADY_EXISTS``.
-
-            This field is a member of `oneof`_ ``operation``.
-        update (google.cloud.spanner_v1.types.Mutation.Write):
-            Update existing rows in a table. If any of the rows does not
-            already exist, the transaction fails with error
-            ``NOT_FOUND``.
-
-            This field is a member of `oneof`_ ``operation``.
-        insert_or_update (google.cloud.spanner_v1.types.Mutation.Write):
-            Like [insert][google.spanner.v1.Mutation.insert], except
-            that if the row already exists, then its column values are
-            overwritten with the ones provided. Any column values not
-            explicitly written are preserved.
-
-            When using
-            [insert_or_update][google.spanner.v1.Mutation.insert_or_update],
-            just as when using
-            [insert][google.spanner.v1.Mutation.insert], all
-            ``NOT NULL`` columns in the table must be given a value.
-            This holds true even when the row already exists and will
-            therefore actually be updated.
-
-            This field is a member of `oneof`_ ``operation``.
-        replace (google.cloud.spanner_v1.types.Mutation.Write):
-            Like [insert][google.spanner.v1.Mutation.insert], except
-            that if the row already exists, it is deleted, and the
-            column values provided are inserted instead. Unlike
-            [insert_or_update][google.spanner.v1.Mutation.insert_or_update],
-            this means any values not explicitly written become
-            ``NULL``.
-
-            In an interleaved table, if you create the child table with
-            the ``ON DELETE CASCADE`` annotation, then replacing a
-            parent row also deletes the child rows. Otherwise, you must
-            delete the child rows before you replace the parent row.
-
-            This field is a member of `oneof`_ ``operation``.
-        delete (google.cloud.spanner_v1.types.Mutation.Delete):
-            Delete rows from a table. Succeeds whether or
-            not the named rows were present.
-
-            This field is a member of `oneof`_ ``operation``.
-        send (google.cloud.spanner_v1.types.Mutation.Send):
-            Send a message to a queue.
-
-            This field is a member of `oneof`_ ``operation``.
-        ack (google.cloud.spanner_v1.types.Mutation.Ack):
-            Ack a message from a queue.
-
-            This field is a member of `oneof`_ ``operation``.
-    """
-
-    class Write(proto.Message):
-        r"""Arguments to [insert][google.spanner.v1.Mutation.insert],
-        [update][google.spanner.v1.Mutation.update],
-        [insert_or_update][google.spanner.v1.Mutation.insert_or_update], and
-        [replace][google.spanner.v1.Mutation.replace] operations.
-
-        Attributes:
-            table (str):
-                Required. The table whose rows will be
-                written.
-            columns (MutableSequence[str]):
-                The names of the columns in
-                [table][google.spanner.v1.Mutation.Write.table] to be
-                written.
-
-                The list of columns must contain enough columns to allow
-                Cloud Spanner to derive values for all primary key columns
-                in the row(s) to be modified.
-            values (MutableSequence[google.protobuf.struct_pb2.ListValue]):
-                The values to be written. ``values`` can contain more than
-                one list of values. If it does, then multiple rows are
-                written, one for each entry in ``values``. Each list in
-                ``values`` must have exactly as many entries as there are
-                entries in
-                [columns][google.spanner.v1.Mutation.Write.columns] above.
-                Sending multiple lists is equivalent to sending multiple
-                ``Mutation``\ s, each containing one ``values`` entry and
-                repeating [table][google.spanner.v1.Mutation.Write.table]
-                and [columns][google.spanner.v1.Mutation.Write.columns].
-                Individual values in each list are encoded as described
-                [here][google.spanner.v1.TypeCode].
-        """
-
-        table: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        columns: MutableSequence[str] = proto.RepeatedField(
-            proto.STRING,
-            number=2,
-        )
-        values: MutableSequence[struct_pb2.ListValue] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=3,
-            message=struct_pb2.ListValue,
-        )
-
-    class Delete(proto.Message):
-        r"""Arguments to [delete][google.spanner.v1.Mutation.delete] operations.
-
-        Attributes:
-            table (str):
-                Required. The table whose rows will be
-                deleted.
-            key_set (google.cloud.spanner_v1.types.KeySet):
-                Required. The primary keys of the rows within
-                [table][google.spanner.v1.Mutation.Delete.table] to delete.
-                The primary keys must be specified in the order in which
-                they appear in the ``PRIMARY KEY()`` clause of the table's
-                equivalent DDL statement (the DDL statement used to create
-                the table). Delete is idempotent. The transaction will
-                succeed even if some or all rows do not exist.
-        """
-
-        table: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        key_set: keys.KeySet = proto.Field(
-            proto.MESSAGE,
-            number=2,
-            message=keys.KeySet,
-        )
-
-    class Send(proto.Message):
-        r"""Arguments to [send][google.spanner.v1.Mutation.send] operations.
-
-        Attributes:
-            queue (str):
-                Required. The queue to which the message will
-                be sent.
-            key (google.protobuf.struct_pb2.ListValue):
-                Required. The primary key of the message to
-                be sent.
-            deliver_time (google.protobuf.timestamp_pb2.Timestamp):
-                The time at which Spanner will begin attempting to deliver
-                the message. If ``deliver_time`` is not set, Spanner will
-                deliver the message immediately. If ``deliver_time`` is in
-                the past, Spanner will replace it with a value closer to the
-                current time.
-            payload (google.protobuf.struct_pb2.Value):
-                The payload of the message.
-        """
-
-        queue: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        key: struct_pb2.ListValue = proto.Field(
-            proto.MESSAGE,
-            number=2,
-            message=struct_pb2.ListValue,
-        )
-        deliver_time: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=3,
-            message=timestamp_pb2.Timestamp,
-        )
-        payload: struct_pb2.Value = proto.Field(
-            proto.MESSAGE,
-            number=4,
-            message=struct_pb2.Value,
-        )
-
-    class Ack(proto.Message):
-        r"""Arguments to [ack][google.spanner.v1.Mutation.ack] operations.
-
-        Attributes:
-            queue (str):
-                Required. The queue where the message to be
-                acked is stored.
-            key (google.protobuf.struct_pb2.ListValue):
-                Required. The primary key of the message to
-                be acked.
-            ignore_not_found (bool):
-                By default, an attempt to ack a message that does not exist
-                will fail with a ``NOT_FOUND`` error. With
-                ``ignore_not_found`` set to true, the ack will succeed even
-                if the message does not exist. This is useful for
-                unconditionally acking a message, even if it is missing or
-                has already been acked.
-        """
-
-        queue: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        key: struct_pb2.ListValue = proto.Field(
-            proto.MESSAGE,
-            number=2,
-            message=struct_pb2.ListValue,
-        )
-        ignore_not_found: bool = proto.Field(
-            proto.BOOL,
-            number=3,
-        )
-
-    insert: Write = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        oneof="operation",
-        message=Write,
-    )
-    update: Write = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        oneof="operation",
-        message=Write,
-    )
-    insert_or_update: Write = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        oneof="operation",
-        message=Write,
-    )
-    replace: Write = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        oneof="operation",
-        message=Write,
-    )
-    delete: Delete = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        oneof="operation",
-        message=Delete,
-    )
-    send: Send = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        oneof="operation",
-        message=Send,
-    )
-    ack: Ack = proto.Field(
-        proto.MESSAGE,
-        number=7,
-        oneof="operation",
-        message=Ack,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/query_plan.py b/google/cloud/spanner_v1/types/query_plan.py
deleted file mode 100644
index dc93ba78e7..0000000000
--- a/google/cloud/spanner_v1/types/query_plan.py
+++ /dev/null
@@ -1,271 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import struct_pb2  # type: ignore
-import proto  # type: ignore
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "PlanNode",
-        "QueryAdvisorResult",
-        "QueryPlan",
-    },
-)
-
-
-class PlanNode(proto.Message):
-    r"""Node information for nodes appearing in a
-    [QueryPlan.plan_nodes][google.spanner.v1.QueryPlan.plan_nodes].
-
-    Attributes:
-        index (int):
-            The ``PlanNode``'s index in [node
-            list][google.spanner.v1.QueryPlan.plan_nodes].
-        kind (google.cloud.spanner_v1.types.PlanNode.Kind):
-            Used to determine the type of node. May be needed for
-            visualizing different kinds of nodes differently. For
-            example, If the node is a
-            [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] node, it
-            will have a condensed representation which can be used to
-            directly embed a description of the node in its parent.
-        display_name (str):
-            The display name for the node.
-        child_links (MutableSequence[google.cloud.spanner_v1.types.PlanNode.ChildLink]):
-            List of child node ``index``\ es and their relationship to
-            this parent.
-        short_representation (google.cloud.spanner_v1.types.PlanNode.ShortRepresentation):
-            Condensed representation for
-            [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] nodes.
-        metadata (google.protobuf.struct_pb2.Struct):
-            Attributes relevant to the node contained in a group of
-            key-value pairs. For example, a Parameter Reference node
-            could have the following information in its metadata:
-
-            ::
-
-                {
-                  "parameter_reference": "param1",
-                  "parameter_type": "array"
-                }
-        execution_stats (google.protobuf.struct_pb2.Struct):
-            The execution statistics associated with the
-            node, contained in a group of key-value pairs.
-            Only present if the plan was returned as a
-            result of a profile query. For example, number
-            of executions, number of rows/time per execution
-            etc.
-    """
-
-    class Kind(proto.Enum):
-        r"""The kind of [PlanNode][google.spanner.v1.PlanNode]. Distinguishes
-        between the two different kinds of nodes that can appear in a query
-        plan.
-
-        Values:
-            KIND_UNSPECIFIED (0):
-                Not specified.
-            RELATIONAL (1):
-                Denotes a Relational operator node in the expression tree.
-                Relational operators represent iterative processing of rows
-                during query execution. For example, a ``TableScan``
-                operation that reads rows from a table.
-            SCALAR (2):
-                Denotes a Scalar node in the expression tree.
-                Scalar nodes represent non-iterable entities in
-                the query plan. For example, constants or
-                arithmetic operators appearing inside predicate
-                expressions or references to column names.
-        """
-        KIND_UNSPECIFIED = 0
-        RELATIONAL = 1
-        SCALAR = 2
-
-    class ChildLink(proto.Message):
-        r"""Metadata associated with a parent-child relationship appearing in a
-        [PlanNode][google.spanner.v1.PlanNode].
-
-        Attributes:
-            child_index (int):
-                The node to which the link points.
-            type_ (str):
-                The type of the link. For example, in Hash
-                Joins this could be used to distinguish between
-                the build child and the probe child, or in the
-                case of the child being an output variable, to
-                represent the tag associated with the output
-                variable.
-            variable (str):
-                Only present if the child node is
-                [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] and
-                corresponds to an output variable of the parent node. The
-                field carries the name of the output variable. For example,
-                a ``TableScan`` operator that reads rows from a table will
-                have child links to the ``SCALAR`` nodes representing the
-                output variables created for each column that is read by the
-                operator. The corresponding ``variable`` fields will be set
-                to the variable names assigned to the columns.
-        """
-
-        child_index: int = proto.Field(
-            proto.INT32,
-            number=1,
-        )
-        type_: str = proto.Field(
-            proto.STRING,
-            number=2,
-        )
-        variable: str = proto.Field(
-            proto.STRING,
-            number=3,
-        )
-
-    class ShortRepresentation(proto.Message):
-        r"""Condensed representation of a node and its subtree. Only present for
-        ``SCALAR`` [PlanNode(s)][google.spanner.v1.PlanNode].
-
-        Attributes:
-            description (str):
-                A string representation of the expression
-                subtree rooted at this node.
-            subqueries (MutableMapping[str, int]):
-                A mapping of (subquery variable name) -> (subquery node id)
-                for cases where the ``description`` string of this node
-                references a ``SCALAR`` subquery contained in the expression
-                subtree rooted at this node. The referenced ``SCALAR``
-                subquery may not necessarily be a direct child of this node.
-        """
-
-        description: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        subqueries: MutableMapping[str, int] = proto.MapField(
-            proto.STRING,
-            proto.INT32,
-            number=2,
-        )
-
-    index: int = proto.Field(
-        proto.INT32,
-        number=1,
-    )
-    kind: Kind = proto.Field(
-        proto.ENUM,
-        number=2,
-        enum=Kind,
-    )
-    display_name: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    child_links: MutableSequence[ChildLink] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=4,
-        message=ChildLink,
-    )
-    short_representation: ShortRepresentation = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=ShortRepresentation,
-    )
-    metadata: struct_pb2.Struct = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message=struct_pb2.Struct,
-    )
-    execution_stats: struct_pb2.Struct = proto.Field(
-        proto.MESSAGE,
-        number=7,
-        message=struct_pb2.Struct,
-    )
-
-
-class QueryAdvisorResult(proto.Message):
-    r"""Output of query advisor analysis.
-
-    Attributes:
-        index_advice (MutableSequence[google.cloud.spanner_v1.types.QueryAdvisorResult.IndexAdvice]):
-            Optional. Index Recommendation for a query.
-            This is an optional field and the recommendation
-            will only be available when the recommendation
-            guarantees significant improvement in query
-            performance.
-    """
-
-    class IndexAdvice(proto.Message):
-        r"""Recommendation to add new indexes to run queries more
-        efficiently.
-
-        Attributes:
-            ddl (MutableSequence[str]):
-                Optional. DDL statements to add new indexes
-                that will improve the query.
-            improvement_factor (float):
-                Optional. Estimated latency improvement
-                factor. For example if the query currently takes
-                500 ms to run and the estimated latency with new
-                indexes is 100 ms this field will be 5.
-        """
-
-        ddl: MutableSequence[str] = proto.RepeatedField(
-            proto.STRING,
-            number=1,
-        )
-        improvement_factor: float = proto.Field(
-            proto.DOUBLE,
-            number=2,
-        )
-
-    index_advice: MutableSequence[IndexAdvice] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=IndexAdvice,
-    )
-
-
-class QueryPlan(proto.Message):
-    r"""Contains an ordered list of nodes appearing in the query
-    plan.
-
-    Attributes:
-        plan_nodes (MutableSequence[google.cloud.spanner_v1.types.PlanNode]):
-            The nodes in the query plan. Plan nodes are returned in
-            pre-order starting with the plan root. Each
-            [PlanNode][google.spanner.v1.PlanNode]'s ``id`` corresponds
-            to its index in ``plan_nodes``.
-        query_advice (google.cloud.spanner_v1.types.QueryAdvisorResult):
-            Optional. The advise/recommendations for a
-            query. Currently this field will be serving
-            index recommendations for a query.
-    """
-
-    plan_nodes: MutableSequence["PlanNode"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="PlanNode",
-    )
-    query_advice: "QueryAdvisorResult" = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message="QueryAdvisorResult",
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/result_set.py b/google/cloud/spanner_v1/types/result_set.py
deleted file mode 100644
index 43d65158b6..0000000000
--- a/google/cloud/spanner_v1/types/result_set.py
+++ /dev/null
@@ -1,405 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import struct_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.types import location
-from google.cloud.spanner_v1.types import query_plan as gs_query_plan
-from google.cloud.spanner_v1.types import transaction as gs_transaction
-from google.cloud.spanner_v1.types import type as gs_type
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "ResultSet",
-        "PartialResultSet",
-        "ResultSetMetadata",
-        "ResultSetStats",
-    },
-)
-
-
-class ResultSet(proto.Message):
-    r"""Results from [Read][google.spanner.v1.Spanner.Read] or
-    [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
-
-    Attributes:
-        metadata (google.cloud.spanner_v1.types.ResultSetMetadata):
-            Metadata about the result set, such as row
-            type information.
-        rows (MutableSequence[google.protobuf.struct_pb2.ListValue]):
-            Each element in ``rows`` is a row whose format is defined by
-            [metadata.row_type][google.spanner.v1.ResultSetMetadata.row_type].
-            The ith element in each row matches the ith field in
-            [metadata.row_type][google.spanner.v1.ResultSetMetadata.row_type].
-            Elements are encoded based on type as described
-            [here][google.spanner.v1.TypeCode].
-        stats (google.cloud.spanner_v1.types.ResultSetStats):
-            Query plan and execution statistics for the SQL statement
-            that produced this result set. These can be requested by
-            setting
-            [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode].
-            DML statements always produce stats containing the number of
-            rows modified, unless executed using the
-            [ExecuteSqlRequest.QueryMode.PLAN][google.spanner.v1.ExecuteSqlRequest.QueryMode.PLAN]
-            [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode].
-            Other fields might or might not be populated, based on the
-            [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode].
-        precommit_token (google.cloud.spanner_v1.types.MultiplexedSessionPrecommitToken):
-            Optional. A precommit token is included if the read-write
-            transaction is on a multiplexed session. Pass the precommit
-            token with the highest sequence number from this transaction
-            attempt to the [Commit][google.spanner.v1.Spanner.Commit]
-            request for this transaction.
-        cache_update (google.cloud.spanner_v1.types.CacheUpdate):
-            Optional. A cache update expresses a set of changes the
-            client should incorporate into its location cache. The
-            client should discard the changes if they are older than the
-            data it already has. This data can be obtained in response
-            to requests that included a ``RoutingHint`` field, but may
-            also be obtained by explicit location-fetching RPCs which
-            may be added in the future.
-    """
-
-    metadata: "ResultSetMetadata" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="ResultSetMetadata",
-    )
-    rows: MutableSequence[struct_pb2.ListValue] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=2,
-        message=struct_pb2.ListValue,
-    )
-    stats: "ResultSetStats" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="ResultSetStats",
-    )
-    precommit_token: gs_transaction.MultiplexedSessionPrecommitToken = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=gs_transaction.MultiplexedSessionPrecommitToken,
-    )
-    cache_update: location.CacheUpdate = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message=location.CacheUpdate,
-    )
-
-
-class PartialResultSet(proto.Message):
-    r"""Partial results from a streaming read or SQL query. Streaming
-    reads and SQL queries better tolerate large result sets, large
-    rows, and large values, but are a little trickier to consume.
-
-    Attributes:
-        metadata (google.cloud.spanner_v1.types.ResultSetMetadata):
-            Metadata about the result set, such as row
-            type information. Only present in the first
-            response.
-        values (MutableSequence[google.protobuf.struct_pb2.Value]):
-            A streamed result set consists of a stream of values, which
-            might be split into many ``PartialResultSet`` messages to
-            accommodate large rows and/or large values. Every N complete
-            values defines a row, where N is equal to the number of
-            entries in
-            [metadata.row_type.fields][google.spanner.v1.StructType.fields].
-
-            Most values are encoded based on type as described
-            [here][google.spanner.v1.TypeCode].
-
-            It's possible that the last value in values is "chunked",
-            meaning that the rest of the value is sent in subsequent
-            ``PartialResultSet``\ (s). This is denoted by the
-            [chunked_value][google.spanner.v1.PartialResultSet.chunked_value]
-            field. Two or more chunked values can be merged to form a
-            complete value as follows:
-
-            - ``bool/number/null``: can't be chunked
-            - ``string``: concatenate the strings
-            - ``list``: concatenate the lists. If the last element in a
-              list is a ``string``, ``list``, or ``object``, merge it
-              with the first element in the next list by applying these
-              rules recursively.
-            - ``object``: concatenate the (field name, field value)
-              pairs. If a field name is duplicated, then apply these
-              rules recursively to merge the field values.
-
-            Some examples of merging:
-
-            ::
-
-                Strings are concatenated.
-                "foo", "bar" => "foobar"
-
-                Lists of non-strings are concatenated.
-                [2, 3], [4] => [2, 3, 4]
-
-                Lists are concatenated, but the last and first elements are merged
-                because they are strings.
-                ["a", "b"], ["c", "d"] => ["a", "bc", "d"]
-
-                Lists are concatenated, but the last and first elements are merged
-                because they are lists. Recursively, the last and first elements
-                of the inner lists are merged because they are strings.
-                ["a", ["b", "c"]], [["d"], "e"] => ["a", ["b", "cd"], "e"]
-
-                Non-overlapping object fields are combined.
-                {"a": "1"}, {"b": "2"} => {"a": "1", "b": 2"}
-
-                Overlapping object fields are merged.
-                {"a": "1"}, {"a": "2"} => {"a": "12"}
-
-                Examples of merging objects containing lists of strings.
-                {"a": ["1"]}, {"a": ["2"]} => {"a": ["12"]}
-
-            For a more complete example, suppose a streaming SQL query
-            is yielding a result set whose rows contain a single string
-            field. The following ``PartialResultSet``\ s might be
-            yielded:
-
-            ::
-
-                {
-                  "metadata": { ... }
-                  "values": ["Hello", "W"]
-                  "chunked_value": true
-                  "resume_token": "Af65..."
-                }
-                {
-                  "values": ["orl"]
-                  "chunked_value": true
-                }
-                {
-                  "values": ["d"]
-                  "resume_token": "Zx1B..."
-                }
-
-            This sequence of ``PartialResultSet``\ s encodes two rows,
-            one containing the field value ``"Hello"``, and a second
-            containing the field value ``"World" = "W" + "orl" + "d"``.
-
-            Not all ``PartialResultSet``\ s contain a ``resume_token``.
-            Execution can only be resumed from a previously yielded
-            ``resume_token``. For the above sequence of
-            ``PartialResultSet``\ s, resuming the query with
-            ``"resume_token": "Af65..."`` yields results from the
-            ``PartialResultSet`` with value "orl".
-        chunked_value (bool):
-            If true, then the final value in
-            [values][google.spanner.v1.PartialResultSet.values] is
-            chunked, and must be combined with more values from
-            subsequent ``PartialResultSet``\ s to obtain a complete
-            field value.
-        resume_token (bytes):
-            Streaming calls might be interrupted for a variety of
-            reasons, such as TCP connection loss. If this occurs, the
-            stream of results can be resumed by re-sending the original
-            request and including ``resume_token``. Note that executing
-            any other transaction in the same session invalidates the
-            token.
-        stats (google.cloud.spanner_v1.types.ResultSetStats):
-            Query plan and execution statistics for the statement that
-            produced this streaming result set. These can be requested
-            by setting
-            [ExecuteSqlRequest.query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode]
-            and are sent only once with the last response in the stream.
-            This field is also present in the last response for DML
-            statements.
-        precommit_token (google.cloud.spanner_v1.types.MultiplexedSessionPrecommitToken):
-            Optional. A precommit token is included if the read-write
-            transaction has multiplexed sessions enabled. Pass the
-            precommit token with the highest sequence number from this
-            transaction attempt to the
-            [Commit][google.spanner.v1.Spanner.Commit] request for this
-            transaction.
-        last (bool):
-            Optional. Indicates whether this is the last
-            ``PartialResultSet`` in the stream. The server might
-            optionally set this field. Clients shouldn't rely on this
-            field being set in all cases.
-        cache_update (google.cloud.spanner_v1.types.CacheUpdate):
-            Optional. A cache update expresses a set of changes the
-            client should incorporate into its location cache. The
-            client should discard the changes if they are older than the
-            data it already has. This data can be obtained in response
-            to requests that included a ``RoutingHint`` field, but may
-            also be obtained by explicit location-fetching RPCs which
-            may be added in the future.
-    """
-
-    metadata: "ResultSetMetadata" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message="ResultSetMetadata",
-    )
-    values: MutableSequence[struct_pb2.Value] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=2,
-        message=struct_pb2.Value,
-    )
-    chunked_value: bool = proto.Field(
-        proto.BOOL,
-        number=3,
-    )
-    resume_token: bytes = proto.Field(
-        proto.BYTES,
-        number=4,
-    )
-    stats: "ResultSetStats" = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message="ResultSetStats",
-    )
-    precommit_token: gs_transaction.MultiplexedSessionPrecommitToken = proto.Field(
-        proto.MESSAGE,
-        number=8,
-        message=gs_transaction.MultiplexedSessionPrecommitToken,
-    )
-    last: bool = proto.Field(
-        proto.BOOL,
-        number=9,
-    )
-    cache_update: location.CacheUpdate = proto.Field(
-        proto.MESSAGE,
-        number=10,
-        message=location.CacheUpdate,
-    )
-
-
-class ResultSetMetadata(proto.Message):
-    r"""Metadata about a [ResultSet][google.spanner.v1.ResultSet] or
-    [PartialResultSet][google.spanner.v1.PartialResultSet].
-
-    Attributes:
-        row_type (google.cloud.spanner_v1.types.StructType):
-            Indicates the field names and types for the rows in the
-            result set. For example, a SQL query like
-            ``"SELECT UserId, UserName FROM Users"`` could return a
-            ``row_type`` value like:
-
-            ::
-
-                "fields": [
-                  { "name": "UserId", "type": { "code": "INT64" } },
-                  { "name": "UserName", "type": { "code": "STRING" } },
-                ]
-        transaction (google.cloud.spanner_v1.types.Transaction):
-            If the read or SQL query began a transaction
-            as a side-effect, the information about the new
-            transaction is yielded here.
-        undeclared_parameters (google.cloud.spanner_v1.types.StructType):
-            A SQL query can be parameterized. In PLAN mode, these
-            parameters can be undeclared. This indicates the field names
-            and types for those undeclared parameters in the SQL query.
-            For example, a SQL query like
-            ``"SELECT * FROM Users where UserId = @userId and UserName = @userName "``
-            could return a ``undeclared_parameters`` value like:
-
-            ::
-
-                "fields": [
-                  { "name": "UserId", "type": { "code": "INT64" } },
-                  { "name": "UserName", "type": { "code": "STRING" } },
-                ]
-    """
-
-    row_type: gs_type.StructType = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message=gs_type.StructType,
-    )
-    transaction: gs_transaction.Transaction = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.Transaction,
-    )
-    undeclared_parameters: gs_type.StructType = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=gs_type.StructType,
-    )
-
-
-class ResultSetStats(proto.Message):
-    r"""Additional statistics about a
-    [ResultSet][google.spanner.v1.ResultSet] or
-    [PartialResultSet][google.spanner.v1.PartialResultSet].
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        query_plan (google.cloud.spanner_v1.types.QueryPlan):
-            [QueryPlan][google.spanner.v1.QueryPlan] for the query
-            associated with this result.
-        query_stats (google.protobuf.struct_pb2.Struct):
-            Aggregated statistics from the execution of the query. Only
-            present when the query is profiled. For example, a query
-            could return the statistics as follows:
-
-            ::
-
-                {
-                  "rows_returned": "3",
-                  "elapsed_time": "1.22 secs",
-                  "cpu_time": "1.19 secs"
-                }
-        row_count_exact (int):
-            Standard DML returns an exact count of rows
-            that were modified.
-
-            This field is a member of `oneof`_ ``row_count``.
-        row_count_lower_bound (int):
-            Partitioned DML doesn't offer exactly-once
-            semantics, so it returns a lower bound of the
-            rows modified.
-
-            This field is a member of `oneof`_ ``row_count``.
-    """
-
-    query_plan: gs_query_plan.QueryPlan = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        message=gs_query_plan.QueryPlan,
-    )
-    query_stats: struct_pb2.Struct = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=struct_pb2.Struct,
-    )
-    row_count_exact: int = proto.Field(
-        proto.INT64,
-        number=3,
-        oneof="row_count",
-    )
-    row_count_lower_bound: int = proto.Field(
-        proto.INT64,
-        number=4,
-        oneof="row_count",
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/spanner.py b/google/cloud/spanner_v1/types/spanner.py
deleted file mode 100644
index 6bf22726fc..0000000000
--- a/google/cloud/spanner_v1/types/spanner.py
+++ /dev/null
@@ -1,1882 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import duration_pb2  # type: ignore
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.rpc import status_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.types import keys
-from google.cloud.spanner_v1.types import location as gs_location
-from google.cloud.spanner_v1.types import mutation, result_set
-from google.cloud.spanner_v1.types import transaction as gs_transaction
-from google.cloud.spanner_v1.types import type as gs_type
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "CreateSessionRequest",
-        "BatchCreateSessionsRequest",
-        "BatchCreateSessionsResponse",
-        "Session",
-        "GetSessionRequest",
-        "ListSessionsRequest",
-        "ListSessionsResponse",
-        "DeleteSessionRequest",
-        "RequestOptions",
-        "DirectedReadOptions",
-        "ExecuteSqlRequest",
-        "ExecuteBatchDmlRequest",
-        "ExecuteBatchDmlResponse",
-        "PartitionOptions",
-        "PartitionQueryRequest",
-        "PartitionReadRequest",
-        "Partition",
-        "PartitionResponse",
-        "ReadRequest",
-        "BeginTransactionRequest",
-        "CommitRequest",
-        "RollbackRequest",
-        "BatchWriteRequest",
-        "BatchWriteResponse",
-    },
-)
-
-
-class CreateSessionRequest(proto.Message):
-    r"""The request for
-    [CreateSession][google.spanner.v1.Spanner.CreateSession].
-
-    Attributes:
-        database (str):
-            Required. The database in which the new
-            session is created.
-        session (google.cloud.spanner_v1.types.Session):
-            Required. The session to create.
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    session: "Session" = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message="Session",
-    )
-
-
-class BatchCreateSessionsRequest(proto.Message):
-    r"""The request for
-    [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-
-    Attributes:
-        database (str):
-            Required. The database in which the new
-            sessions are created.
-        session_template (google.cloud.spanner_v1.types.Session):
-            Parameters to apply to each created session.
-        session_count (int):
-            Required. The number of sessions to be created in this batch
-            call. At least one session is created. The API can return
-            fewer than the requested number of sessions. If a specific
-            number of sessions are desired, the client can make
-            additional calls to ``BatchCreateSessions`` (adjusting
-            [session_count][google.spanner.v1.BatchCreateSessionsRequest.session_count]
-            as necessary).
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    session_template: "Session" = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message="Session",
-    )
-    session_count: int = proto.Field(
-        proto.INT32,
-        number=3,
-    )
-
-
-class BatchCreateSessionsResponse(proto.Message):
-    r"""The response for
-    [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
-
-    Attributes:
-        session (MutableSequence[google.cloud.spanner_v1.types.Session]):
-            The freshly created sessions.
-    """
-
-    session: MutableSequence["Session"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="Session",
-    )
-
-
-class Session(proto.Message):
-    r"""A session in the Cloud Spanner API.
-
-    Attributes:
-        name (str):
-            Output only. The name of the session. This is
-            always system-assigned.
-        labels (MutableMapping[str, str]):
-            The labels for the session.
-
-            - Label keys must be between 1 and 63 characters long and
-              must conform to the following regular expression:
-              ``[a-z]([-a-z0-9]*[a-z0-9])?``.
-            - Label values must be between 0 and 63 characters long and
-              must conform to the regular expression
-              ``([a-z]([-a-z0-9]*[a-z0-9])?)?``.
-            - No more than 64 labels can be associated with a given
-              session.
-
-            See https://goo.gl/xmQnxf for more information on and
-            examples of labels.
-        create_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The timestamp when the session
-            is created.
-        approximate_last_use_time (google.protobuf.timestamp_pb2.Timestamp):
-            Output only. The approximate timestamp when
-            the session is last used. It's typically earlier
-            than the actual last use time.
-        creator_role (str):
-            The database role which created this session.
-        multiplexed (bool):
-            Optional. If ``true``, specifies a multiplexed session. Use
-            a multiplexed session for multiple, concurrent operations
-            including any combination of read-only and read-write
-            transactions. Use
-            [``sessions.create``][google.spanner.v1.Spanner.CreateSession]
-            to create multiplexed sessions. Don't use
-            [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions]
-            to create a multiplexed session. You can't delete or list
-            multiplexed sessions.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    labels: MutableMapping[str, str] = proto.MapField(
-        proto.STRING,
-        proto.STRING,
-        number=2,
-    )
-    create_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-    approximate_last_use_time: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=timestamp_pb2.Timestamp,
-    )
-    creator_role: str = proto.Field(
-        proto.STRING,
-        number=5,
-    )
-    multiplexed: bool = proto.Field(
-        proto.BOOL,
-        number=6,
-    )
-
-
-class GetSessionRequest(proto.Message):
-    r"""The request for [GetSession][google.spanner.v1.Spanner.GetSession].
-
-    Attributes:
-        name (str):
-            Required. The name of the session to
-            retrieve.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class ListSessionsRequest(proto.Message):
-    r"""The request for
-    [ListSessions][google.spanner.v1.Spanner.ListSessions].
-
-    Attributes:
-        database (str):
-            Required. The database in which to list
-            sessions.
-        page_size (int):
-            Number of sessions to be returned in the
-            response. If 0 or less, defaults to the server's
-            maximum allowed page size.
-        page_token (str):
-            If non-empty, ``page_token`` should contain a
-            [next_page_token][google.spanner.v1.ListSessionsResponse.next_page_token]
-            from a previous
-            [ListSessionsResponse][google.spanner.v1.ListSessionsResponse].
-        filter (str):
-            An expression for filtering the results of the request.
-            Filter rules are case insensitive. The fields eligible for
-            filtering are:
-
-            - ``labels.key`` where key is the name of a label
-
-            Some examples of using filters are:
-
-            - ``labels.env:*`` --> The session has the label "env".
-            - ``labels.env:dev`` --> The session has the label "env" and
-              the value of the label contains the string "dev".
-    """
-
-    database: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    page_size: int = proto.Field(
-        proto.INT32,
-        number=2,
-    )
-    page_token: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    filter: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-
-
-class ListSessionsResponse(proto.Message):
-    r"""The response for
-    [ListSessions][google.spanner.v1.Spanner.ListSessions].
-
-    Attributes:
-        sessions (MutableSequence[google.cloud.spanner_v1.types.Session]):
-            The list of requested sessions.
-        next_page_token (str):
-            ``next_page_token`` can be sent in a subsequent
-            [ListSessions][google.spanner.v1.Spanner.ListSessions] call
-            to fetch more of the matching sessions.
-    """
-
-    @property
-    def raw_page(self):
-        return self
-
-    sessions: MutableSequence["Session"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="Session",
-    )
-    next_page_token: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-
-
-class DeleteSessionRequest(proto.Message):
-    r"""The request for
-    [DeleteSession][google.spanner.v1.Spanner.DeleteSession].
-
-    Attributes:
-        name (str):
-            Required. The name of the session to delete.
-    """
-
-    name: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-
-
-class RequestOptions(proto.Message):
-    r"""Common request options for various APIs.
-
-    Attributes:
-        priority (google.cloud.spanner_v1.types.RequestOptions.Priority):
-            Priority for the request.
-        request_tag (str):
-            A per-request tag which can be applied to queries or reads,
-            used for statistics collection. Both ``request_tag`` and
-            ``transaction_tag`` can be specified for a read or query
-            that belongs to a transaction. This field is ignored for
-            requests where it's not applicable (for example,
-            ``CommitRequest``). Legal characters for ``request_tag``
-            values are all printable characters (ASCII 32 - 126) and the
-            length of a request_tag is limited to 50 characters. Values
-            that exceed this limit are truncated. Any leading underscore
-            (\_) characters are removed from the string.
-        transaction_tag (str):
-            A tag used for statistics collection about this transaction.
-            Both ``request_tag`` and ``transaction_tag`` can be
-            specified for a read or query that belongs to a transaction.
-            To enable tagging on a transaction, ``transaction_tag`` must
-            be set to the same value for all requests belonging to the
-            same transaction, including
-            [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
-            If this request doesn't belong to any transaction,
-            ``transaction_tag`` is ignored. Legal characters for
-            ``transaction_tag`` values are all printable characters
-            (ASCII 32 - 126) and the length of a ``transaction_tag`` is
-            limited to 50 characters. Values that exceed this limit are
-            truncated. Any leading underscore (\_) characters are
-            removed from the string.
-        client_context (google.cloud.spanner_v1.types.RequestOptions.ClientContext):
-            Optional. Optional context that may be needed
-            for some requests.
-    """
-
-    class Priority(proto.Enum):
-        r"""The relative priority for requests. Note that priority isn't
-        applicable for
-        [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
-
-        The priority acts as a hint to the Cloud Spanner scheduler and
-        doesn't guarantee priority or order of execution. For example:
-
-        - Some parts of a write operation always execute at
-          ``PRIORITY_HIGH``, regardless of the specified priority. This can
-          cause you to see an increase in high priority workload even when
-          executing a low priority request. This can also potentially cause
-          a priority inversion where a lower priority request is fulfilled
-          ahead of a higher priority request.
-        - If a transaction contains multiple operations with different
-          priorities, Cloud Spanner doesn't guarantee to process the higher
-          priority operations first. There might be other constraints to
-          satisfy, such as the order of operations.
-
-        Values:
-            PRIORITY_UNSPECIFIED (0):
-                ``PRIORITY_UNSPECIFIED`` is equivalent to ``PRIORITY_HIGH``.
-            PRIORITY_LOW (1):
-                This specifies that the request is low
-                priority.
-            PRIORITY_MEDIUM (2):
-                This specifies that the request is medium
-                priority.
-            PRIORITY_HIGH (3):
-                This specifies that the request is high
-                priority.
-        """
-        PRIORITY_UNSPECIFIED = 0
-        PRIORITY_LOW = 1
-        PRIORITY_MEDIUM = 2
-        PRIORITY_HIGH = 3
-
-    class ClientContext(proto.Message):
-        r"""Container for various pieces of client-owned context attached
-        to a request.
-
-        Attributes:
-            secure_context (MutableMapping[str, google.protobuf.struct_pb2.Value]):
-                Optional. Map of parameter name to value for this request.
-                These values will be returned by any SECURE_CONTEXT() calls
-                invoked by this request (e.g., by queries against
-                Parameterized Secure Views).
-        """
-
-        secure_context: MutableMapping[str, struct_pb2.Value] = proto.MapField(
-            proto.STRING,
-            proto.MESSAGE,
-            number=1,
-            message=struct_pb2.Value,
-        )
-
-    priority: Priority = proto.Field(
-        proto.ENUM,
-        number=1,
-        enum=Priority,
-    )
-    request_tag: str = proto.Field(
-        proto.STRING,
-        number=2,
-    )
-    transaction_tag: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    client_context: ClientContext = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=ClientContext,
-    )
-
-
-class DirectedReadOptions(proto.Message):
-    r"""The ``DirectedReadOptions`` can be used to indicate which replicas
-    or regions should be used for non-transactional reads or queries.
-
-    ``DirectedReadOptions`` can only be specified for a read-only
-    transaction, otherwise the API returns an ``INVALID_ARGUMENT``
-    error.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        include_replicas (google.cloud.spanner_v1.types.DirectedReadOptions.IncludeReplicas):
-            ``Include_replicas`` indicates the order of replicas (as
-            they appear in this list) to process the request. If
-            ``auto_failover_disabled`` is set to ``true`` and all
-            replicas are exhausted without finding a healthy replica,
-            Spanner waits for a replica in the list to become available,
-            requests might fail due to ``DEADLINE_EXCEEDED`` errors.
-
-            This field is a member of `oneof`_ ``replicas``.
-        exclude_replicas (google.cloud.spanner_v1.types.DirectedReadOptions.ExcludeReplicas):
-            ``Exclude_replicas`` indicates that specified replicas
-            should be excluded from serving requests. Spanner doesn't
-            route requests to the replicas in this list.
-
-            This field is a member of `oneof`_ ``replicas``.
-    """
-
-    class ReplicaSelection(proto.Message):
-        r"""The directed read replica selector. Callers must provide one or more
-        of the following fields for replica selection:
-
-        - ``location`` - The location must be one of the regions within the
-          multi-region configuration of your database.
-        - ``type`` - The type of the replica.
-
-        Some examples of using replica_selectors are:
-
-        - ``location:us-east1`` --> The "us-east1" replica(s) of any
-          available type is used to process the request.
-        - ``type:READ_ONLY`` --> The "READ_ONLY" type replica(s) in the
-          nearest available location are used to process the request.
-        - ``location:us-east1 type:READ_ONLY`` --> The "READ_ONLY" type
-          replica(s) in location "us-east1" is used to process the request.
-
-        Attributes:
-            location (str):
-                The location or region of the serving
-                requests, for example, "us-east1".
-            type_ (google.cloud.spanner_v1.types.DirectedReadOptions.ReplicaSelection.Type):
-                The type of replica.
-        """
-
-        class Type(proto.Enum):
-            r"""Indicates the type of replica.
-
-            Values:
-                TYPE_UNSPECIFIED (0):
-                    Not specified.
-                READ_WRITE (1):
-                    Read-write replicas support both reads and
-                    writes.
-                READ_ONLY (2):
-                    Read-only replicas only support reads (not
-                    writes).
-            """
-            TYPE_UNSPECIFIED = 0
-            READ_WRITE = 1
-            READ_ONLY = 2
-
-        location: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        type_: "DirectedReadOptions.ReplicaSelection.Type" = proto.Field(
-            proto.ENUM,
-            number=2,
-            enum="DirectedReadOptions.ReplicaSelection.Type",
-        )
-
-    class IncludeReplicas(proto.Message):
-        r"""An ``IncludeReplicas`` contains a repeated set of
-        ``ReplicaSelection`` which indicates the order in which replicas
-        should be considered.
-
-        Attributes:
-            replica_selections (MutableSequence[google.cloud.spanner_v1.types.DirectedReadOptions.ReplicaSelection]):
-                The directed read replica selector.
-            auto_failover_disabled (bool):
-                If ``true``, Spanner doesn't route requests to a replica
-                outside the <``include_replicas`` list when all of the
-                specified replicas are unavailable or unhealthy. Default
-                value is ``false``.
-        """
-
-        replica_selections: MutableSequence[
-            "DirectedReadOptions.ReplicaSelection"
-        ] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=1,
-            message="DirectedReadOptions.ReplicaSelection",
-        )
-        auto_failover_disabled: bool = proto.Field(
-            proto.BOOL,
-            number=2,
-        )
-
-    class ExcludeReplicas(proto.Message):
-        r"""An ExcludeReplicas contains a repeated set of
-        ReplicaSelection that should be excluded from serving requests.
-
-        Attributes:
-            replica_selections (MutableSequence[google.cloud.spanner_v1.types.DirectedReadOptions.ReplicaSelection]):
-                The directed read replica selector.
-        """
-
-        replica_selections: MutableSequence[
-            "DirectedReadOptions.ReplicaSelection"
-        ] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=1,
-            message="DirectedReadOptions.ReplicaSelection",
-        )
-
-    include_replicas: IncludeReplicas = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        oneof="replicas",
-        message=IncludeReplicas,
-    )
-    exclude_replicas: ExcludeReplicas = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        oneof="replicas",
-        message=ExcludeReplicas,
-    )
-
-
-class ExecuteSqlRequest(proto.Message):
-    r"""The request for [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql]
-    and
-    [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
-
-    Attributes:
-        session (str):
-            Required. The session in which the SQL query
-            should be performed.
-        transaction (google.cloud.spanner_v1.types.TransactionSelector):
-            The transaction to use.
-
-            For queries, if none is provided, the default is
-            a temporary read-only transaction with strong
-            concurrency.
-
-            Standard DML statements require a read-write
-            transaction. To protect against replays,
-            single-use transactions are not supported. The
-            caller must either supply an existing
-            transaction ID or begin a new transaction.
-
-            Partitioned DML requires an existing Partitioned
-            DML transaction ID.
-        sql (str):
-            Required. The SQL string.
-        params (google.protobuf.struct_pb2.Struct):
-            Parameter names and values that bind to placeholders in the
-            SQL string.
-
-            A parameter placeholder consists of the ``@`` character
-            followed by the parameter name (for example,
-            ``@firstName``). Parameter names must conform to the naming
-            requirements of identifiers as specified at
-            https://cloud.google.com/spanner/docs/lexical#identifiers.
-
-            Parameters can appear anywhere that a literal value is
-            expected. The same parameter name can be used more than
-            once, for example:
-
-            ``"WHERE id > @msg_id AND id < @msg_id + 100"``
-
-            It's an error to execute a SQL statement with unbound
-            parameters.
-        param_types (MutableMapping[str, google.cloud.spanner_v1.types.Type]):
-            It isn't always possible for Cloud Spanner to infer the
-            right SQL type from a JSON value. For example, values of
-            type ``BYTES`` and values of type ``STRING`` both appear in
-            [params][google.spanner.v1.ExecuteSqlRequest.params] as JSON
-            strings.
-
-            In these cases, you can use ``param_types`` to specify the
-            exact SQL type for some or all of the SQL statement
-            parameters. See the definition of
-            [Type][google.spanner.v1.Type] for more information about
-            SQL types.
-        resume_token (bytes):
-            If this request is resuming a previously interrupted SQL
-            statement execution, ``resume_token`` should be copied from
-            the last
-            [PartialResultSet][google.spanner.v1.PartialResultSet]
-            yielded before the interruption. Doing this enables the new
-            SQL statement execution to resume where the last one left
-            off. The rest of the request parameters must exactly match
-            the request that yielded this token.
-        query_mode (google.cloud.spanner_v1.types.ExecuteSqlRequest.QueryMode):
-            Used to control the amount of debugging information returned
-            in [ResultSetStats][google.spanner.v1.ResultSetStats]. If
-            [partition_token][google.spanner.v1.ExecuteSqlRequest.partition_token]
-            is set,
-            [query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode]
-            can only be set to
-            [QueryMode.NORMAL][google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL].
-        partition_token (bytes):
-            If present, results are restricted to the specified
-            partition previously created using ``PartitionQuery``. There
-            must be an exact match for the values of fields common to
-            this message and the ``PartitionQueryRequest`` message used
-            to create this ``partition_token``.
-        seqno (int):
-            A per-transaction sequence number used to
-            identify this request. This field makes each
-            request idempotent such that if the request is
-            received multiple times, at most one succeeds.
-
-            The sequence number must be monotonically
-            increasing within the transaction. If a request
-            arrives for the first time with an out-of-order
-            sequence number, the transaction can be aborted.
-            Replays of previously handled requests yield the
-            same response as the first execution.
-
-            Required for DML statements. Ignored for
-            queries.
-        query_options (google.cloud.spanner_v1.types.ExecuteSqlRequest.QueryOptions):
-            Query optimizer configuration to use for the
-            given query.
-        request_options (google.cloud.spanner_v1.types.RequestOptions):
-            Common options for this request.
-        directed_read_options (google.cloud.spanner_v1.types.DirectedReadOptions):
-            Directed read options for this request.
-        data_boost_enabled (bool):
-            If this is for a partitioned query and this field is set to
-            ``true``, the request is executed with Spanner Data Boost
-            independent compute resources.
-
-            If the field is set to ``true`` but the request doesn't set
-            ``partition_token``, the API returns an ``INVALID_ARGUMENT``
-            error.
-        last_statement (bool):
-            Optional. If set to ``true``, this statement marks the end
-            of the transaction. After this statement executes, you must
-            commit or abort the transaction. Attempts to execute any
-            other requests against this transaction (including reads and
-            queries) are rejected.
-
-            For DML statements, setting this option might cause some
-            error reporting to be deferred until commit time (for
-            example, validation of unique constraints). Given this,
-            successful execution of a DML statement shouldn't be assumed
-            until a subsequent ``Commit`` call completes successfully.
-        routing_hint (google.cloud.spanner_v1.types.RoutingHint):
-            Optional. Makes the Spanner requests
-            location-aware if present.
-            It gives the server hints that can be used to
-            route the request to an appropriate server,
-            potentially significantly decreasing latency and
-            improving throughput. To achieve improved
-            performance, most fields must be filled in with
-            accurate values.
-    """
-
-    class QueryMode(proto.Enum):
-        r"""Mode in which the statement must be processed.
-
-        Values:
-            NORMAL (0):
-                The default mode. Only the statement results
-                are returned.
-            PLAN (1):
-                This mode returns only the query plan,
-                without any results or execution statistics
-                information.
-            PROFILE (2):
-                This mode returns the query plan, overall
-                execution statistics, operator level execution
-                statistics along with the results. This has a
-                performance overhead compared to the other
-                modes. It isn't recommended to use this mode for
-                production traffic.
-            WITH_STATS (3):
-                This mode returns the overall (but not
-                operator-level) execution statistics along with
-                the results.
-            WITH_PLAN_AND_STATS (4):
-                This mode returns the query plan, overall
-                (but not operator-level) execution statistics
-                along with the results.
-        """
-        NORMAL = 0
-        PLAN = 1
-        PROFILE = 2
-        WITH_STATS = 3
-        WITH_PLAN_AND_STATS = 4
-
-    class QueryOptions(proto.Message):
-        r"""Query optimizer configuration.
-
-        Attributes:
-            optimizer_version (str):
-                An option to control the selection of optimizer version.
-
-                This parameter allows individual queries to pick different
-                query optimizer versions.
-
-                Specifying ``latest`` as a value instructs Cloud Spanner to
-                use the latest supported query optimizer version. If not
-                specified, Cloud Spanner uses the optimizer version set at
-                the database level options. Any other positive integer (from
-                the list of supported optimizer versions) overrides the
-                default optimizer version for query execution.
-
-                The list of supported optimizer versions can be queried from
-                ``SPANNER_SYS.SUPPORTED_OPTIMIZER_VERSIONS``.
-
-                Executing a SQL statement with an invalid optimizer version
-                fails with an ``INVALID_ARGUMENT`` error.
-
-                See
-                https://cloud.google.com/spanner/docs/query-optimizer/manage-query-optimizer
-                for more information on managing the query optimizer.
-
-                The ``optimizer_version`` statement hint has precedence over
-                this setting.
-            optimizer_statistics_package (str):
-                An option to control the selection of optimizer statistics
-                package.
-
-                This parameter allows individual queries to use a different
-                query optimizer statistics package.
-
-                Specifying ``latest`` as a value instructs Cloud Spanner to
-                use the latest generated statistics package. If not
-                specified, Cloud Spanner uses the statistics package set at
-                the database level options, or the latest package if the
-                database option isn't set.
-
-                The statistics package requested by the query has to be
-                exempt from garbage collection. This can be achieved with
-                the following DDL statement:
-
-                .. code:: sql
-
-                   ALTER STATISTICS <package_name> SET OPTIONS (allow_gc=false)
-
-                The list of available statistics packages can be queried
-                from ``INFORMATION_SCHEMA.SPANNER_STATISTICS``.
-
-                Executing a SQL statement with an invalid optimizer
-                statistics package or with a statistics package that allows
-                garbage collection fails with an ``INVALID_ARGUMENT`` error.
-        """
-
-        optimizer_version: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        optimizer_statistics_package: str = proto.Field(
-            proto.STRING,
-            number=2,
-        )
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    transaction: gs_transaction.TransactionSelector = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.TransactionSelector,
-    )
-    sql: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    params: struct_pb2.Struct = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=struct_pb2.Struct,
-    )
-    param_types: MutableMapping[str, gs_type.Type] = proto.MapField(
-        proto.STRING,
-        proto.MESSAGE,
-        number=5,
-        message=gs_type.Type,
-    )
-    resume_token: bytes = proto.Field(
-        proto.BYTES,
-        number=6,
-    )
-    query_mode: QueryMode = proto.Field(
-        proto.ENUM,
-        number=7,
-        enum=QueryMode,
-    )
-    partition_token: bytes = proto.Field(
-        proto.BYTES,
-        number=8,
-    )
-    seqno: int = proto.Field(
-        proto.INT64,
-        number=9,
-    )
-    query_options: QueryOptions = proto.Field(
-        proto.MESSAGE,
-        number=10,
-        message=QueryOptions,
-    )
-    request_options: "RequestOptions" = proto.Field(
-        proto.MESSAGE,
-        number=11,
-        message="RequestOptions",
-    )
-    directed_read_options: "DirectedReadOptions" = proto.Field(
-        proto.MESSAGE,
-        number=15,
-        message="DirectedReadOptions",
-    )
-    data_boost_enabled: bool = proto.Field(
-        proto.BOOL,
-        number=16,
-    )
-    last_statement: bool = proto.Field(
-        proto.BOOL,
-        number=17,
-    )
-    routing_hint: gs_location.RoutingHint = proto.Field(
-        proto.MESSAGE,
-        number=18,
-        message=gs_location.RoutingHint,
-    )
-
-
-class ExecuteBatchDmlRequest(proto.Message):
-    r"""The request for
-    [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-
-    Attributes:
-        session (str):
-            Required. The session in which the DML
-            statements should be performed.
-        transaction (google.cloud.spanner_v1.types.TransactionSelector):
-            Required. The transaction to use. Must be a
-            read-write transaction.
-            To protect against replays, single-use
-            transactions are not supported. The caller must
-            either supply an existing transaction ID or
-            begin a new transaction.
-        statements (MutableSequence[google.cloud.spanner_v1.types.ExecuteBatchDmlRequest.Statement]):
-            Required. The list of statements to execute in this batch.
-            Statements are executed serially, such that the effects of
-            statement ``i`` are visible to statement ``i+1``. Each
-            statement must be a DML statement. Execution stops at the
-            first failed statement; the remaining statements are not
-            executed.
-
-            Callers must provide at least one statement.
-        seqno (int):
-            Required. A per-transaction sequence number
-            used to identify this request. This field makes
-            each request idempotent such that if the request
-            is received multiple times, at most one
-            succeeds.
-
-            The sequence number must be monotonically
-            increasing within the transaction. If a request
-            arrives for the first time with an out-of-order
-            sequence number, the transaction might be
-            aborted. Replays of previously handled requests
-            yield the same response as the first execution.
-        request_options (google.cloud.spanner_v1.types.RequestOptions):
-            Common options for this request.
-        last_statements (bool):
-            Optional. If set to ``true``, this request marks the end of
-            the transaction. After these statements execute, you must
-            commit or abort the transaction. Attempts to execute any
-            other requests against this transaction (including reads and
-            queries) are rejected.
-
-            Setting this option might cause some error reporting to be
-            deferred until commit time (for example, validation of
-            unique constraints). Given this, successful execution of
-            statements shouldn't be assumed until a subsequent
-            ``Commit`` call completes successfully.
-    """
-
-    class Statement(proto.Message):
-        r"""A single DML statement.
-
-        Attributes:
-            sql (str):
-                Required. The DML string.
-            params (google.protobuf.struct_pb2.Struct):
-                Parameter names and values that bind to placeholders in the
-                DML string.
-
-                A parameter placeholder consists of the ``@`` character
-                followed by the parameter name (for example,
-                ``@firstName``). Parameter names can contain letters,
-                numbers, and underscores.
-
-                Parameters can appear anywhere that a literal value is
-                expected. The same parameter name can be used more than
-                once, for example:
-
-                ``"WHERE id > @msg_id AND id < @msg_id + 100"``
-
-                It's an error to execute a SQL statement with unbound
-                parameters.
-            param_types (MutableMapping[str, google.cloud.spanner_v1.types.Type]):
-                It isn't always possible for Cloud Spanner to infer the
-                right SQL type from a JSON value. For example, values of
-                type ``BYTES`` and values of type ``STRING`` both appear in
-                [params][google.spanner.v1.ExecuteBatchDmlRequest.Statement.params]
-                as JSON strings.
-
-                In these cases, ``param_types`` can be used to specify the
-                exact SQL type for some or all of the SQL statement
-                parameters. See the definition of
-                [Type][google.spanner.v1.Type] for more information about
-                SQL types.
-        """
-
-        sql: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        params: struct_pb2.Struct = proto.Field(
-            proto.MESSAGE,
-            number=2,
-            message=struct_pb2.Struct,
-        )
-        param_types: MutableMapping[str, gs_type.Type] = proto.MapField(
-            proto.STRING,
-            proto.MESSAGE,
-            number=3,
-            message=gs_type.Type,
-        )
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    transaction: gs_transaction.TransactionSelector = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.TransactionSelector,
-    )
-    statements: MutableSequence[Statement] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=3,
-        message=Statement,
-    )
-    seqno: int = proto.Field(
-        proto.INT64,
-        number=4,
-    )
-    request_options: "RequestOptions" = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message="RequestOptions",
-    )
-    last_statements: bool = proto.Field(
-        proto.BOOL,
-        number=6,
-    )
-
-
-class ExecuteBatchDmlResponse(proto.Message):
-    r"""The response for
-    [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml].
-    Contains a list of [ResultSet][google.spanner.v1.ResultSet]
-    messages, one for each DML statement that has successfully executed,
-    in the same order as the statements in the request. If a statement
-    fails, the status in the response body identifies the cause of the
-    failure.
-
-    To check for DML statements that failed, use the following approach:
-
-    1. Check the status in the response message. The
-       [google.rpc.Code][google.rpc.Code] enum value ``OK`` indicates
-       that all statements were executed successfully.
-    2. If the status was not ``OK``, check the number of result sets in
-       the response. If the response contains ``N``
-       [ResultSet][google.spanner.v1.ResultSet] messages, then statement
-       ``N+1`` in the request failed.
-
-    Example 1:
-
-    - Request: 5 DML statements, all executed successfully.
-    - Response: 5 [ResultSet][google.spanner.v1.ResultSet] messages,
-      with the status ``OK``.
-
-    Example 2:
-
-    - Request: 5 DML statements. The third statement has a syntax error.
-    - Response: 2 [ResultSet][google.spanner.v1.ResultSet] messages, and
-      a syntax error (``INVALID_ARGUMENT``) status. The number of
-      [ResultSet][google.spanner.v1.ResultSet] messages indicates that
-      the third statement failed, and the fourth and fifth statements
-      were not executed.
-
-    Attributes:
-        result_sets (MutableSequence[google.cloud.spanner_v1.types.ResultSet]):
-            One [ResultSet][google.spanner.v1.ResultSet] for each
-            statement in the request that ran successfully, in the same
-            order as the statements in the request. Each
-            [ResultSet][google.spanner.v1.ResultSet] does not contain
-            any rows. The
-            [ResultSetStats][google.spanner.v1.ResultSetStats] in each
-            [ResultSet][google.spanner.v1.ResultSet] contain the number
-            of rows modified by the statement.
-
-            Only the first [ResultSet][google.spanner.v1.ResultSet] in
-            the response contains valid
-            [ResultSetMetadata][google.spanner.v1.ResultSetMetadata].
-        status (google.rpc.status_pb2.Status):
-            If all DML statements are executed successfully, the status
-            is ``OK``. Otherwise, the error status of the first failed
-            statement.
-        precommit_token (google.cloud.spanner_v1.types.MultiplexedSessionPrecommitToken):
-            Optional. A precommit token is included if the read-write
-            transaction is on a multiplexed session. Pass the precommit
-            token with the highest sequence number from this transaction
-            attempt should be passed to the
-            [Commit][google.spanner.v1.Spanner.Commit] request for this
-            transaction.
-    """
-
-    result_sets: MutableSequence[result_set.ResultSet] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=result_set.ResultSet,
-    )
-    status: status_pb2.Status = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=status_pb2.Status,
-    )
-    precommit_token: gs_transaction.MultiplexedSessionPrecommitToken = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=gs_transaction.MultiplexedSessionPrecommitToken,
-    )
-
-
-class PartitionOptions(proto.Message):
-    r"""Options for a ``PartitionQueryRequest`` and
-    ``PartitionReadRequest``.
-
-    Attributes:
-        partition_size_bytes (int):
-            **Note:** This hint is currently ignored by
-            ``PartitionQuery`` and ``PartitionRead`` requests.
-
-            The desired data size for each partition generated. The
-            default for this option is currently 1 GiB. This is only a
-            hint. The actual size of each partition can be smaller or
-            larger than this size request.
-        max_partitions (int):
-            **Note:** This hint is currently ignored by
-            ``PartitionQuery`` and ``PartitionRead`` requests.
-
-            The desired maximum number of partitions to return. For
-            example, this might be set to the number of workers
-            available. The default for this option is currently 10,000.
-            The maximum value is currently 200,000. This is only a hint.
-            The actual number of partitions returned can be smaller or
-            larger than this maximum count request.
-    """
-
-    partition_size_bytes: int = proto.Field(
-        proto.INT64,
-        number=1,
-    )
-    max_partitions: int = proto.Field(
-        proto.INT64,
-        number=2,
-    )
-
-
-class PartitionQueryRequest(proto.Message):
-    r"""The request for
-    [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
-
-    Attributes:
-        session (str):
-            Required. The session used to create the
-            partitions.
-        transaction (google.cloud.spanner_v1.types.TransactionSelector):
-            Read-only snapshot transactions are
-            supported, read and write and single-use
-            transactions are not.
-        sql (str):
-            Required. The query request to generate partitions for. The
-            request fails if the query isn't root partitionable. For a
-            query to be root partitionable, it needs to satisfy a few
-            conditions. For example, if the query execution plan
-            contains a distributed union operator, then it must be the
-            first operator in the plan. For more information about other
-            conditions, see `Read data in
-            parallel <https://cloud.google.com/spanner/docs/reads#read_data_in_parallel>`__.
-
-            The query request must not contain DML commands, such as
-            ``INSERT``, ``UPDATE``, or ``DELETE``. Use
-            [``ExecuteStreamingSql``][google.spanner.v1.Spanner.ExecuteStreamingSql]
-            with a ``PartitionedDml`` transaction for large,
-            partition-friendly DML operations.
-        params (google.protobuf.struct_pb2.Struct):
-            Optional. Parameter names and values that bind to
-            placeholders in the SQL string.
-
-            A parameter placeholder consists of the ``@`` character
-            followed by the parameter name (for example,
-            ``@firstName``). Parameter names can contain letters,
-            numbers, and underscores.
-
-            Parameters can appear anywhere that a literal value is
-            expected. The same parameter name can be used more than
-            once, for example:
-
-            ``"WHERE id > @msg_id AND id < @msg_id + 100"``
-
-            It's an error to execute a SQL statement with unbound
-            parameters.
-        param_types (MutableMapping[str, google.cloud.spanner_v1.types.Type]):
-            Optional. It isn't always possible for Cloud Spanner to
-            infer the right SQL type from a JSON value. For example,
-            values of type ``BYTES`` and values of type ``STRING`` both
-            appear in
-            [params][google.spanner.v1.PartitionQueryRequest.params] as
-            JSON strings.
-
-            In these cases, ``param_types`` can be used to specify the
-            exact SQL type for some or all of the SQL query parameters.
-            See the definition of [Type][google.spanner.v1.Type] for
-            more information about SQL types.
-        partition_options (google.cloud.spanner_v1.types.PartitionOptions):
-            Additional options that affect how many
-            partitions are created.
-    """
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    transaction: gs_transaction.TransactionSelector = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.TransactionSelector,
-    )
-    sql: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    params: struct_pb2.Struct = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=struct_pb2.Struct,
-    )
-    param_types: MutableMapping[str, gs_type.Type] = proto.MapField(
-        proto.STRING,
-        proto.MESSAGE,
-        number=5,
-        message=gs_type.Type,
-    )
-    partition_options: "PartitionOptions" = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message="PartitionOptions",
-    )
-
-
-class PartitionReadRequest(proto.Message):
-    r"""The request for
-    [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-    Attributes:
-        session (str):
-            Required. The session used to create the
-            partitions.
-        transaction (google.cloud.spanner_v1.types.TransactionSelector):
-            Read only snapshot transactions are
-            supported, read/write and single use
-            transactions are not.
-        table (str):
-            Required. The name of the table in the
-            database to be read.
-        index (str):
-            If non-empty, the name of an index on
-            [table][google.spanner.v1.PartitionReadRequest.table]. This
-            index is used instead of the table primary key when
-            interpreting
-            [key_set][google.spanner.v1.PartitionReadRequest.key_set]
-            and sorting result rows. See
-            [key_set][google.spanner.v1.PartitionReadRequest.key_set]
-            for further information.
-        columns (MutableSequence[str]):
-            The columns of
-            [table][google.spanner.v1.PartitionReadRequest.table] to be
-            returned for each row matching this request.
-        key_set (google.cloud.spanner_v1.types.KeySet):
-            Required. ``key_set`` identifies the rows to be yielded.
-            ``key_set`` names the primary keys of the rows in
-            [table][google.spanner.v1.PartitionReadRequest.table] to be
-            yielded, unless
-            [index][google.spanner.v1.PartitionReadRequest.index] is
-            present. If
-            [index][google.spanner.v1.PartitionReadRequest.index] is
-            present, then
-            [key_set][google.spanner.v1.PartitionReadRequest.key_set]
-            instead names index keys in
-            [index][google.spanner.v1.PartitionReadRequest.index].
-
-            It isn't an error for the ``key_set`` to name rows that
-            don't exist in the database. Read yields nothing for
-            nonexistent rows.
-        partition_options (google.cloud.spanner_v1.types.PartitionOptions):
-            Additional options that affect how many
-            partitions are created.
-    """
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    transaction: gs_transaction.TransactionSelector = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.TransactionSelector,
-    )
-    table: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    index: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-    columns: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=5,
-    )
-    key_set: keys.KeySet = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message=keys.KeySet,
-    )
-    partition_options: "PartitionOptions" = proto.Field(
-        proto.MESSAGE,
-        number=9,
-        message="PartitionOptions",
-    )
-
-
-class Partition(proto.Message):
-    r"""Information returned for each partition returned in a
-    PartitionResponse.
-
-    Attributes:
-        partition_token (bytes):
-            This token can be passed to ``Read``, ``StreamingRead``,
-            ``ExecuteSql``, or ``ExecuteStreamingSql`` requests to
-            restrict the results to those identified by this partition
-            token.
-    """
-
-    partition_token: bytes = proto.Field(
-        proto.BYTES,
-        number=1,
-    )
-
-
-class PartitionResponse(proto.Message):
-    r"""The response for
-    [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery] or
-    [PartitionRead][google.spanner.v1.Spanner.PartitionRead]
-
-    Attributes:
-        partitions (MutableSequence[google.cloud.spanner_v1.types.Partition]):
-            Partitions created by this request.
-        transaction (google.cloud.spanner_v1.types.Transaction):
-            Transaction created by this request.
-    """
-
-    partitions: MutableSequence["Partition"] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message="Partition",
-    )
-    transaction: gs_transaction.Transaction = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.Transaction,
-    )
-
-
-class ReadRequest(proto.Message):
-    r"""The request for [Read][google.spanner.v1.Spanner.Read] and
-    [StreamingRead][google.spanner.v1.Spanner.StreamingRead].
-
-    Attributes:
-        session (str):
-            Required. The session in which the read
-            should be performed.
-        transaction (google.cloud.spanner_v1.types.TransactionSelector):
-            The transaction to use. If none is provided,
-            the default is a temporary read-only transaction
-            with strong concurrency.
-        table (str):
-            Required. The name of the table in the
-            database to be read.
-        index (str):
-            If non-empty, the name of an index on
-            [table][google.spanner.v1.ReadRequest.table]. This index is
-            used instead of the table primary key when interpreting
-            [key_set][google.spanner.v1.ReadRequest.key_set] and sorting
-            result rows. See
-            [key_set][google.spanner.v1.ReadRequest.key_set] for further
-            information.
-        columns (MutableSequence[str]):
-            Required. The columns of
-            [table][google.spanner.v1.ReadRequest.table] to be returned
-            for each row matching this request.
-        key_set (google.cloud.spanner_v1.types.KeySet):
-            Required. ``key_set`` identifies the rows to be yielded.
-            ``key_set`` names the primary keys of the rows in
-            [table][google.spanner.v1.ReadRequest.table] to be yielded,
-            unless [index][google.spanner.v1.ReadRequest.index] is
-            present. If [index][google.spanner.v1.ReadRequest.index] is
-            present, then
-            [key_set][google.spanner.v1.ReadRequest.key_set] instead
-            names index keys in
-            [index][google.spanner.v1.ReadRequest.index].
-
-            If the
-            [partition_token][google.spanner.v1.ReadRequest.partition_token]
-            field is empty, rows are yielded in table primary key order
-            (if [index][google.spanner.v1.ReadRequest.index] is empty)
-            or index key order (if
-            [index][google.spanner.v1.ReadRequest.index] is non-empty).
-            If the
-            [partition_token][google.spanner.v1.ReadRequest.partition_token]
-            field isn't empty, rows are yielded in an unspecified order.
-
-            It isn't an error for the ``key_set`` to name rows that
-            don't exist in the database. Read yields nothing for
-            nonexistent rows.
-        limit (int):
-            If greater than zero, only the first ``limit`` rows are
-            yielded. If ``limit`` is zero, the default is no limit. A
-            limit can't be specified if ``partition_token`` is set.
-        resume_token (bytes):
-            If this request is resuming a previously interrupted read,
-            ``resume_token`` should be copied from the last
-            [PartialResultSet][google.spanner.v1.PartialResultSet]
-            yielded before the interruption. Doing this enables the new
-            read to resume where the last read left off. The rest of the
-            request parameters must exactly match the request that
-            yielded this token.
-        partition_token (bytes):
-            If present, results are restricted to the specified
-            partition previously created using ``PartitionRead``. There
-            must be an exact match for the values of fields common to
-            this message and the PartitionReadRequest message used to
-            create this partition_token.
-        request_options (google.cloud.spanner_v1.types.RequestOptions):
-            Common options for this request.
-        directed_read_options (google.cloud.spanner_v1.types.DirectedReadOptions):
-            Directed read options for this request.
-        data_boost_enabled (bool):
-            If this is for a partitioned read and this field is set to
-            ``true``, the request is executed with Spanner Data Boost
-            independent compute resources.
-
-            If the field is set to ``true`` but the request doesn't set
-            ``partition_token``, the API returns an ``INVALID_ARGUMENT``
-            error.
-        order_by (google.cloud.spanner_v1.types.ReadRequest.OrderBy):
-            Optional. Order for the returned rows.
-
-            By default, Spanner returns result rows in primary key order
-            except for PartitionRead requests. For applications that
-            don't require rows to be returned in primary key
-            (``ORDER_BY_PRIMARY_KEY``) order, setting
-            ``ORDER_BY_NO_ORDER`` option allows Spanner to optimize row
-            retrieval, resulting in lower latencies in certain cases
-            (for example, bulk point lookups).
-        lock_hint (google.cloud.spanner_v1.types.ReadRequest.LockHint):
-            Optional. Lock Hint for the request, it can
-            only be used with read-write transactions.
-        routing_hint (google.cloud.spanner_v1.types.RoutingHint):
-            Optional. Makes the Spanner requests
-            location-aware if present.
-            It gives the server hints that can be used to
-            route the request to an appropriate server,
-            potentially significantly decreasing latency and
-            improving throughput. To achieve improved
-            performance, most fields must be filled in with
-            accurate values.
-    """
-
-    class OrderBy(proto.Enum):
-        r"""An option to control the order in which rows are returned
-        from a read.
-
-        Values:
-            ORDER_BY_UNSPECIFIED (0):
-                Default value.
-
-                ``ORDER_BY_UNSPECIFIED`` is equivalent to
-                ``ORDER_BY_PRIMARY_KEY``.
-            ORDER_BY_PRIMARY_KEY (1):
-                Read rows are returned in primary key order.
-
-                In the event that this option is used in conjunction with
-                the ``partition_token`` field, the API returns an
-                ``INVALID_ARGUMENT`` error.
-            ORDER_BY_NO_ORDER (2):
-                Read rows are returned in any order.
-        """
-        ORDER_BY_UNSPECIFIED = 0
-        ORDER_BY_PRIMARY_KEY = 1
-        ORDER_BY_NO_ORDER = 2
-
-    class LockHint(proto.Enum):
-        r"""A lock hint mechanism for reads done within a transaction.
-
-        Values:
-            LOCK_HINT_UNSPECIFIED (0):
-                Default value.
-
-                ``LOCK_HINT_UNSPECIFIED`` is equivalent to
-                ``LOCK_HINT_SHARED``.
-            LOCK_HINT_SHARED (1):
-                Acquire shared locks.
-
-                By default when you perform a read as part of a read-write
-                transaction, Spanner acquires shared read locks, which
-                allows other reads to still access the data until your
-                transaction is ready to commit. When your transaction is
-                committing and writes are being applied, the transaction
-                attempts to upgrade to an exclusive lock for any data you
-                are writing. For more information about locks, see `Lock
-                modes <https://cloud.google.com/spanner/docs/introspection/lock-statistics#explain-lock-modes>`__.
-            LOCK_HINT_EXCLUSIVE (2):
-                Acquire exclusive locks.
-
-                Requesting exclusive locks is beneficial if you observe high
-                write contention, which means you notice that multiple
-                transactions are concurrently trying to read and write to
-                the same data, resulting in a large number of aborts. This
-                problem occurs when two transactions initially acquire
-                shared locks and then both try to upgrade to exclusive locks
-                at the same time. In this situation both transactions are
-                waiting for the other to give up their lock, resulting in a
-                deadlocked situation. Spanner is able to detect this
-                occurring and force one of the transactions to abort.
-                However, this is a slow and expensive operation and results
-                in lower performance. In this case it makes sense to acquire
-                exclusive locks at the start of the transaction because then
-                when multiple transactions try to act on the same data, they
-                automatically get serialized. Each transaction waits its
-                turn to acquire the lock and avoids getting into deadlock
-                situations.
-
-                Because the exclusive lock hint is just a hint, it shouldn't
-                be considered equivalent to a mutex. In other words, you
-                shouldn't use Spanner exclusive locks as a mutual exclusion
-                mechanism for the execution of code outside of Spanner.
-
-                **Note:** Request exclusive locks judiciously because they
-                block others from reading that data for the entire
-                transaction, rather than just when the writes are being
-                performed. Unless you observe high write contention, you
-                should use the default of shared read locks so you don't
-                prematurely block other clients from reading the data that
-                you're writing to.
-        """
-        LOCK_HINT_UNSPECIFIED = 0
-        LOCK_HINT_SHARED = 1
-        LOCK_HINT_EXCLUSIVE = 2
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    transaction: gs_transaction.TransactionSelector = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.TransactionSelector,
-    )
-    table: str = proto.Field(
-        proto.STRING,
-        number=3,
-    )
-    index: str = proto.Field(
-        proto.STRING,
-        number=4,
-    )
-    columns: MutableSequence[str] = proto.RepeatedField(
-        proto.STRING,
-        number=5,
-    )
-    key_set: keys.KeySet = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message=keys.KeySet,
-    )
-    limit: int = proto.Field(
-        proto.INT64,
-        number=8,
-    )
-    resume_token: bytes = proto.Field(
-        proto.BYTES,
-        number=9,
-    )
-    partition_token: bytes = proto.Field(
-        proto.BYTES,
-        number=10,
-    )
-    request_options: "RequestOptions" = proto.Field(
-        proto.MESSAGE,
-        number=11,
-        message="RequestOptions",
-    )
-    directed_read_options: "DirectedReadOptions" = proto.Field(
-        proto.MESSAGE,
-        number=14,
-        message="DirectedReadOptions",
-    )
-    data_boost_enabled: bool = proto.Field(
-        proto.BOOL,
-        number=15,
-    )
-    order_by: OrderBy = proto.Field(
-        proto.ENUM,
-        number=16,
-        enum=OrderBy,
-    )
-    lock_hint: LockHint = proto.Field(
-        proto.ENUM,
-        number=17,
-        enum=LockHint,
-    )
-    routing_hint: gs_location.RoutingHint = proto.Field(
-        proto.MESSAGE,
-        number=18,
-        message=gs_location.RoutingHint,
-    )
-
-
-class BeginTransactionRequest(proto.Message):
-    r"""The request for
-    [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
-
-    Attributes:
-        session (str):
-            Required. The session in which the
-            transaction runs.
-        options (google.cloud.spanner_v1.types.TransactionOptions):
-            Required. Options for the new transaction.
-        request_options (google.cloud.spanner_v1.types.RequestOptions):
-            Common options for this request. Priority is ignored for
-            this request. Setting the priority in this
-            ``request_options`` struct doesn't do anything. To set the
-            priority for a transaction, set it on the reads and writes
-            that are part of this transaction instead.
-        mutation_key (google.cloud.spanner_v1.types.Mutation):
-            Optional. Required for read-write
-            transactions on a multiplexed session that
-            commit mutations but don't perform any reads or
-            queries. You must randomly select one of the
-            mutations from the mutation set and send it as a
-            part of this request.
-        routing_hint (google.cloud.spanner_v1.types.RoutingHint):
-            Optional. Makes the Spanner requests
-            location-aware if present.
-            It gives the server hints that can be used to
-            route the request to an appropriate server,
-            potentially significantly decreasing latency and
-            improving throughput. To achieve improved
-            performance, most fields must be filled in with
-            accurate values.
-    """
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    options: gs_transaction.TransactionOptions = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=gs_transaction.TransactionOptions,
-    )
-    request_options: "RequestOptions" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="RequestOptions",
-    )
-    mutation_key: mutation.Mutation = proto.Field(
-        proto.MESSAGE,
-        number=4,
-        message=mutation.Mutation,
-    )
-    routing_hint: gs_location.RoutingHint = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=gs_location.RoutingHint,
-    )
-
-
-class CommitRequest(proto.Message):
-    r"""The request for [Commit][google.spanner.v1.Spanner.Commit].
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        session (str):
-            Required. The session in which the
-            transaction to be committed is running.
-        transaction_id (bytes):
-            Commit a previously-started transaction.
-
-            This field is a member of `oneof`_ ``transaction``.
-        single_use_transaction (google.cloud.spanner_v1.types.TransactionOptions):
-            Execute mutations in a temporary transaction. Note that
-            unlike commit of a previously-started transaction, commit
-            with a temporary transaction is non-idempotent. That is, if
-            the ``CommitRequest`` is sent to Cloud Spanner more than
-            once (for instance, due to retries in the application, or in
-            the transport library), it's possible that the mutations are
-            executed more than once. If this is undesirable, use
-            [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction]
-            and [Commit][google.spanner.v1.Spanner.Commit] instead.
-
-            This field is a member of `oneof`_ ``transaction``.
-        mutations (MutableSequence[google.cloud.spanner_v1.types.Mutation]):
-            The mutations to be executed when this
-            transaction commits. All mutations are applied
-            atomically, in the order they appear in this
-            list.
-        return_commit_stats (bool):
-            If ``true``, then statistics related to the transaction is
-            included in the
-            [CommitResponse][google.spanner.v1.CommitResponse.commit_stats].
-            Default value is ``false``.
-        max_commit_delay (google.protobuf.duration_pb2.Duration):
-            Optional. The amount of latency this request
-            is configured to incur in order to improve
-            throughput. If this field isn't set, Spanner
-            assumes requests are relatively latency
-            sensitive and automatically determines an
-            appropriate delay time. You can specify a commit
-            delay value between 0 and 500 ms.
-        request_options (google.cloud.spanner_v1.types.RequestOptions):
-            Common options for this request.
-        precommit_token (google.cloud.spanner_v1.types.MultiplexedSessionPrecommitToken):
-            Optional. If the read-write transaction was executed on a
-            multiplexed session, then you must include the precommit
-            token with the highest sequence number received in this
-            transaction attempt. Failing to do so results in a
-            ``FailedPrecondition`` error.
-        routing_hint (google.cloud.spanner_v1.types.RoutingHint):
-            Optional. Makes the Spanner requests
-            location-aware if present.
-            It gives the server hints that can be used to
-            route the request to an appropriate server,
-            potentially significantly decreasing latency and
-            improving throughput. To achieve improved
-            performance, most fields must be filled in with
-            accurate values.
-    """
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    transaction_id: bytes = proto.Field(
-        proto.BYTES,
-        number=2,
-        oneof="transaction",
-    )
-    single_use_transaction: gs_transaction.TransactionOptions = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        oneof="transaction",
-        message=gs_transaction.TransactionOptions,
-    )
-    mutations: MutableSequence[mutation.Mutation] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=4,
-        message=mutation.Mutation,
-    )
-    return_commit_stats: bool = proto.Field(
-        proto.BOOL,
-        number=5,
-    )
-    max_commit_delay: duration_pb2.Duration = proto.Field(
-        proto.MESSAGE,
-        number=8,
-        message=duration_pb2.Duration,
-    )
-    request_options: "RequestOptions" = proto.Field(
-        proto.MESSAGE,
-        number=6,
-        message="RequestOptions",
-    )
-    precommit_token: gs_transaction.MultiplexedSessionPrecommitToken = proto.Field(
-        proto.MESSAGE,
-        number=9,
-        message=gs_transaction.MultiplexedSessionPrecommitToken,
-    )
-    routing_hint: gs_location.RoutingHint = proto.Field(
-        proto.MESSAGE,
-        number=10,
-        message=gs_location.RoutingHint,
-    )
-
-
-class RollbackRequest(proto.Message):
-    r"""The request for [Rollback][google.spanner.v1.Spanner.Rollback].
-
-    Attributes:
-        session (str):
-            Required. The session in which the
-            transaction to roll back is running.
-        transaction_id (bytes):
-            Required. The transaction to roll back.
-    """
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    transaction_id: bytes = proto.Field(
-        proto.BYTES,
-        number=2,
-    )
-
-
-class BatchWriteRequest(proto.Message):
-    r"""The request for [BatchWrite][google.spanner.v1.Spanner.BatchWrite].
-
-    Attributes:
-        session (str):
-            Required. The session in which the batch
-            request is to be run.
-        request_options (google.cloud.spanner_v1.types.RequestOptions):
-            Common options for this request.
-        mutation_groups (MutableSequence[google.cloud.spanner_v1.types.BatchWriteRequest.MutationGroup]):
-            Required. The groups of mutations to be
-            applied.
-        exclude_txn_from_change_streams (bool):
-            Optional. If you don't set the
-            ``exclude_txn_from_change_streams`` option or if it's set to
-            ``false``, then any change streams monitoring columns
-            modified by transactions will capture the updates made
-            within that transaction.
-    """
-
-    class MutationGroup(proto.Message):
-        r"""A group of mutations to be committed together. Related
-        mutations should be placed in a group. For example, two
-        mutations inserting rows with the same primary key prefix in
-        both parent and child tables are related.
-
-        Attributes:
-            mutations (MutableSequence[google.cloud.spanner_v1.types.Mutation]):
-                Required. The mutations in this group.
-        """
-
-        mutations: MutableSequence[mutation.Mutation] = proto.RepeatedField(
-            proto.MESSAGE,
-            number=1,
-            message=mutation.Mutation,
-        )
-
-    session: str = proto.Field(
-        proto.STRING,
-        number=1,
-    )
-    request_options: "RequestOptions" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="RequestOptions",
-    )
-    mutation_groups: MutableSequence[MutationGroup] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=4,
-        message=MutationGroup,
-    )
-    exclude_txn_from_change_streams: bool = proto.Field(
-        proto.BOOL,
-        number=5,
-    )
-
-
-class BatchWriteResponse(proto.Message):
-    r"""The result of applying a batch of mutations.
-
-    Attributes:
-        indexes (MutableSequence[int]):
-            The mutation groups applied in this batch. The values index
-            into the ``mutation_groups`` field in the corresponding
-            ``BatchWriteRequest``.
-        status (google.rpc.status_pb2.Status):
-            An ``OK`` status indicates success. Any other status
-            indicates a failure.
-        commit_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-            The commit timestamp of the transaction that applied this
-            batch. Present if status is OK and the mutation groups were
-            applied, absent otherwise.
-
-            For mutation groups with conditions, a status=OK and missing
-            commit_timestamp means that the mutation groups were not
-            applied due to the condition not being satisfied after
-            evaluation.
-    """
-
-    indexes: MutableSequence[int] = proto.RepeatedField(
-        proto.INT32,
-        number=1,
-    )
-    status: status_pb2.Status = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=status_pb2.Status,
-    )
-    commit_timestamp: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message=timestamp_pb2.Timestamp,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/transaction.py b/google/cloud/spanner_v1/types/transaction.py
deleted file mode 100644
index f4764adbff..0000000000
--- a/google/cloud/spanner_v1/types/transaction.py
+++ /dev/null
@@ -1,510 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-from google.protobuf import duration_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-import proto  # type: ignore
-
-from google.cloud.spanner_v1.types import location
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "TransactionOptions",
-        "Transaction",
-        "TransactionSelector",
-        "MultiplexedSessionPrecommitToken",
-    },
-)
-
-
-class TransactionOptions(proto.Message):
-    r"""Options to use for transactions.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        read_write (google.cloud.spanner_v1.types.TransactionOptions.ReadWrite):
-            Transaction may write.
-
-            Authorization to begin a read-write transaction requires
-            ``spanner.databases.beginOrRollbackReadWriteTransaction``
-            permission on the ``session`` resource.
-
-            This field is a member of `oneof`_ ``mode``.
-        partitioned_dml (google.cloud.spanner_v1.types.TransactionOptions.PartitionedDml):
-            Partitioned DML transaction.
-
-            Authorization to begin a Partitioned DML transaction
-            requires
-            ``spanner.databases.beginPartitionedDmlTransaction``
-            permission on the ``session`` resource.
-
-            This field is a member of `oneof`_ ``mode``.
-        read_only (google.cloud.spanner_v1.types.TransactionOptions.ReadOnly):
-            Transaction does not write.
-
-            Authorization to begin a read-only transaction requires
-            ``spanner.databases.beginReadOnlyTransaction`` permission on
-            the ``session`` resource.
-
-            This field is a member of `oneof`_ ``mode``.
-        exclude_txn_from_change_streams (bool):
-            When ``exclude_txn_from_change_streams`` is set to ``true``,
-            it prevents read or write transactions from being tracked in
-            change streams.
-
-            - If the DDL option ``allow_txn_exclusion`` is set to
-              ``true``, then the updates made within this transaction
-              aren't recorded in the change stream.
-
-            - If you don't set the DDL option ``allow_txn_exclusion`` or
-              if it's set to ``false``, then the updates made within
-              this transaction are recorded in the change stream.
-
-            When ``exclude_txn_from_change_streams`` is set to ``false``
-            or not set, modifications from this transaction are recorded
-            in all change streams that are tracking columns modified by
-            these transactions.
-
-            The ``exclude_txn_from_change_streams`` option can only be
-            specified for read-write or partitioned DML transactions,
-            otherwise the API returns an ``INVALID_ARGUMENT`` error.
-        isolation_level (google.cloud.spanner_v1.types.TransactionOptions.IsolationLevel):
-            Isolation level for the transaction.
-    """
-
-    class IsolationLevel(proto.Enum):
-        r"""``IsolationLevel`` is used when setting the `isolation
-        level <https://cloud.google.com/spanner/docs/isolation-levels>`__
-        for a transaction.
-
-        Values:
-            ISOLATION_LEVEL_UNSPECIFIED (0):
-                Default value.
-
-                If the value is not specified, the ``SERIALIZABLE``
-                isolation level is used.
-            SERIALIZABLE (1):
-                All transactions appear as if they executed in a serial
-                order, even if some of the reads, writes, and other
-                operations of distinct transactions actually occurred in
-                parallel. Spanner assigns commit timestamps that reflect the
-                order of committed transactions to implement this property.
-                Spanner offers a stronger guarantee than serializability
-                called external consistency. For more information, see
-                `TrueTime and external
-                consistency <https://cloud.google.com/spanner/docs/true-time-external-consistency#serializability>`__.
-            REPEATABLE_READ (2):
-                All reads performed during the transaction observe a
-                consistent snapshot of the database, and the transaction is
-                only successfully committed in the absence of conflicts
-                between its updates and any concurrent updates that have
-                occurred since that snapshot. Consequently, in contrast to
-                ``SERIALIZABLE`` transactions, only write-write conflicts
-                are detected in snapshot transactions.
-
-                This isolation level does not support read-only and
-                partitioned DML transactions.
-
-                When ``REPEATABLE_READ`` is specified on a read-write
-                transaction, the locking semantics default to
-                ``OPTIMISTIC``.
-        """
-        ISOLATION_LEVEL_UNSPECIFIED = 0
-        SERIALIZABLE = 1
-        REPEATABLE_READ = 2
-
-    class ReadWrite(proto.Message):
-        r"""Message type to initiate a read-write transaction. Currently
-        this transaction type has no options.
-
-        Attributes:
-            read_lock_mode (google.cloud.spanner_v1.types.TransactionOptions.ReadWrite.ReadLockMode):
-                Read lock mode for the transaction.
-            multiplexed_session_previous_transaction_id (bytes):
-                Optional. Clients should pass the transaction
-                ID of the previous transaction attempt that was
-                aborted if this transaction is being executed on
-                a multiplexed session.
-        """
-
-        class ReadLockMode(proto.Enum):
-            r"""``ReadLockMode`` is used to set the read lock mode for read-write
-            transactions.
-
-            Values:
-                READ_LOCK_MODE_UNSPECIFIED (0):
-                    Default value.
-
-                    - If isolation level is
-                      [SERIALIZABLE][google.spanner.v1.TransactionOptions.IsolationLevel.SERIALIZABLE],
-                      locking semantics default to ``PESSIMISTIC``.
-                    - If isolation level is
-                      [REPEATABLE_READ][google.spanner.v1.TransactionOptions.IsolationLevel.REPEATABLE_READ],
-                      locking semantics default to ``OPTIMISTIC``.
-                    - See `Concurrency
-                      control <https://cloud.google.com/spanner/docs/concurrency-control>`__
-                      for more details.
-                PESSIMISTIC (1):
-                    Pessimistic lock mode.
-
-                    Lock acquisition behavior depends on the isolation level in
-                    use. In
-                    [SERIALIZABLE][google.spanner.v1.TransactionOptions.IsolationLevel.SERIALIZABLE]
-                    isolation, reads and writes acquire necessary locks during
-                    transaction statement execution. In
-                    [REPEATABLE_READ][google.spanner.v1.TransactionOptions.IsolationLevel.REPEATABLE_READ]
-                    isolation, reads that explicitly request to be locked and
-                    writes acquire locks. See `Concurrency
-                    control <https://cloud.google.com/spanner/docs/concurrency-control>`__
-                    for details on the types of locks acquired at each
-                    transaction step.
-                OPTIMISTIC (2):
-                    Optimistic lock mode.
-
-                    Lock acquisition behavior depends on the isolation level in
-                    use. In both
-                    [SERIALIZABLE][google.spanner.v1.TransactionOptions.IsolationLevel.SERIALIZABLE]
-                    and
-                    [REPEATABLE_READ][google.spanner.v1.TransactionOptions.IsolationLevel.REPEATABLE_READ]
-                    isolation, reads and writes do not acquire locks during
-                    transaction statement execution. See `Concurrency
-                    control <https://cloud.google.com/spanner/docs/concurrency-control>`__
-                    for details on how the guarantees of each isolation level
-                    are provided at commit time.
-            """
-            READ_LOCK_MODE_UNSPECIFIED = 0
-            PESSIMISTIC = 1
-            OPTIMISTIC = 2
-
-        read_lock_mode: "TransactionOptions.ReadWrite.ReadLockMode" = proto.Field(
-            proto.ENUM,
-            number=1,
-            enum="TransactionOptions.ReadWrite.ReadLockMode",
-        )
-        multiplexed_session_previous_transaction_id: bytes = proto.Field(
-            proto.BYTES,
-            number=2,
-        )
-
-    class PartitionedDml(proto.Message):
-        r"""Message type to initiate a Partitioned DML transaction."""
-
-    class ReadOnly(proto.Message):
-        r"""Message type to initiate a read-only transaction.
-
-        This message has `oneof`_ fields (mutually exclusive fields).
-        For each oneof, at most one member field can be set at the same time.
-        Setting any member of the oneof automatically clears all other
-        members.
-
-        .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-        Attributes:
-            strong (bool):
-                Read at a timestamp where all previously
-                committed transactions are visible.
-
-                This field is a member of `oneof`_ ``timestamp_bound``.
-            min_read_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-                Executes all reads at a timestamp >= ``min_read_timestamp``.
-
-                This is useful for requesting fresher data than some
-                previous read, or data that is fresh enough to observe the
-                effects of some previously committed transaction whose
-                timestamp is known.
-
-                Note that this option can only be used in single-use
-                transactions.
-
-                A timestamp in RFC3339 UTC "Zulu" format, accurate to
-                nanoseconds. Example: ``"2014-10-02T15:01:23.045123456Z"``.
-
-                This field is a member of `oneof`_ ``timestamp_bound``.
-            max_staleness (google.protobuf.duration_pb2.Duration):
-                Read data at a timestamp >= ``NOW - max_staleness`` seconds.
-                Guarantees that all writes that have committed more than the
-                specified number of seconds ago are visible. Because Cloud
-                Spanner chooses the exact timestamp, this mode works even if
-                the client's local clock is substantially skewed from Cloud
-                Spanner commit timestamps.
-
-                Useful for reading the freshest data available at a nearby
-                replica, while bounding the possible staleness if the local
-                replica has fallen behind.
-
-                Note that this option can only be used in single-use
-                transactions.
-
-                This field is a member of `oneof`_ ``timestamp_bound``.
-            read_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-                Executes all reads at the given timestamp. Unlike other
-                modes, reads at a specific timestamp are repeatable; the
-                same read at the same timestamp always returns the same
-                data. If the timestamp is in the future, the read is blocked
-                until the specified timestamp, modulo the read's deadline.
-
-                Useful for large scale consistent reads such as mapreduces,
-                or for coordinating many reads against a consistent snapshot
-                of the data.
-
-                A timestamp in RFC3339 UTC "Zulu" format, accurate to
-                nanoseconds. Example: ``"2014-10-02T15:01:23.045123456Z"``.
-
-                This field is a member of `oneof`_ ``timestamp_bound``.
-            exact_staleness (google.protobuf.duration_pb2.Duration):
-                Executes all reads at a timestamp that is
-                ``exact_staleness`` old. The timestamp is chosen soon after
-                the read is started.
-
-                Guarantees that all writes that have committed more than the
-                specified number of seconds ago are visible. Because Cloud
-                Spanner chooses the exact timestamp, this mode works even if
-                the client's local clock is substantially skewed from Cloud
-                Spanner commit timestamps.
-
-                Useful for reading at nearby replicas without the
-                distributed timestamp negotiation overhead of
-                ``max_staleness``.
-
-                This field is a member of `oneof`_ ``timestamp_bound``.
-            return_read_timestamp (bool):
-                If true, the Cloud Spanner-selected read timestamp is
-                included in the [Transaction][google.spanner.v1.Transaction]
-                message that describes the transaction.
-        """
-
-        strong: bool = proto.Field(
-            proto.BOOL,
-            number=1,
-            oneof="timestamp_bound",
-        )
-        min_read_timestamp: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=2,
-            oneof="timestamp_bound",
-            message=timestamp_pb2.Timestamp,
-        )
-        max_staleness: duration_pb2.Duration = proto.Field(
-            proto.MESSAGE,
-            number=3,
-            oneof="timestamp_bound",
-            message=duration_pb2.Duration,
-        )
-        read_timestamp: timestamp_pb2.Timestamp = proto.Field(
-            proto.MESSAGE,
-            number=4,
-            oneof="timestamp_bound",
-            message=timestamp_pb2.Timestamp,
-        )
-        exact_staleness: duration_pb2.Duration = proto.Field(
-            proto.MESSAGE,
-            number=5,
-            oneof="timestamp_bound",
-            message=duration_pb2.Duration,
-        )
-        return_read_timestamp: bool = proto.Field(
-            proto.BOOL,
-            number=6,
-        )
-
-    read_write: ReadWrite = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        oneof="mode",
-        message=ReadWrite,
-    )
-    partitioned_dml: PartitionedDml = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        oneof="mode",
-        message=PartitionedDml,
-    )
-    read_only: ReadOnly = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        oneof="mode",
-        message=ReadOnly,
-    )
-    exclude_txn_from_change_streams: bool = proto.Field(
-        proto.BOOL,
-        number=5,
-    )
-    isolation_level: IsolationLevel = proto.Field(
-        proto.ENUM,
-        number=6,
-        enum=IsolationLevel,
-    )
-
-
-class Transaction(proto.Message):
-    r"""A transaction.
-
-    Attributes:
-        id (bytes):
-            ``id`` may be used to identify the transaction in subsequent
-            [Read][google.spanner.v1.Spanner.Read],
-            [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql],
-            [Commit][google.spanner.v1.Spanner.Commit], or
-            [Rollback][google.spanner.v1.Spanner.Rollback] calls.
-
-            Single-use read-only transactions do not have IDs, because
-            single-use transactions do not support multiple requests.
-        read_timestamp (google.protobuf.timestamp_pb2.Timestamp):
-            For snapshot read-only transactions, the read timestamp
-            chosen for the transaction. Not returned by default: see
-            [TransactionOptions.ReadOnly.return_read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.return_read_timestamp].
-
-            A timestamp in RFC3339 UTC "Zulu" format, accurate to
-            nanoseconds. Example: ``"2014-10-02T15:01:23.045123456Z"``.
-        precommit_token (google.cloud.spanner_v1.types.MultiplexedSessionPrecommitToken):
-            A precommit token is included in the response of a
-            BeginTransaction request if the read-write transaction is on
-            a multiplexed session and a mutation_key was specified in
-            the
-            [BeginTransaction][google.spanner.v1.BeginTransactionRequest].
-            The precommit token with the highest sequence number from
-            this transaction attempt should be passed to the
-            [Commit][google.spanner.v1.Spanner.Commit] request for this
-            transaction.
-        cache_update (google.cloud.spanner_v1.types.CacheUpdate):
-            Optional. A cache update expresses a set of changes the
-            client should incorporate into its location cache. The
-            client should discard the changes if they are older than the
-            data it already has. This data can be obtained in response
-            to requests that included a ``RoutingHint`` field, but may
-            also be obtained by explicit location-fetching RPCs which
-            may be added in the future.
-    """
-
-    id: bytes = proto.Field(
-        proto.BYTES,
-        number=1,
-    )
-    read_timestamp: timestamp_pb2.Timestamp = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message=timestamp_pb2.Timestamp,
-    )
-    precommit_token: "MultiplexedSessionPrecommitToken" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="MultiplexedSessionPrecommitToken",
-    )
-    cache_update: location.CacheUpdate = proto.Field(
-        proto.MESSAGE,
-        number=5,
-        message=location.CacheUpdate,
-    )
-
-
-class TransactionSelector(proto.Message):
-    r"""This message is used to select the transaction in which a
-    [Read][google.spanner.v1.Spanner.Read] or
-    [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] call runs.
-
-    See [TransactionOptions][google.spanner.v1.TransactionOptions] for
-    more information about transactions.
-
-    This message has `oneof`_ fields (mutually exclusive fields).
-    For each oneof, at most one member field can be set at the same time.
-    Setting any member of the oneof automatically clears all other
-    members.
-
-    .. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
-
-    Attributes:
-        single_use (google.cloud.spanner_v1.types.TransactionOptions):
-            Execute the read or SQL query in a temporary
-            transaction. This is the most efficient way to
-            execute a transaction that consists of a single
-            SQL query.
-
-            This field is a member of `oneof`_ ``selector``.
-        id (bytes):
-            Execute the read or SQL query in a
-            previously-started transaction.
-
-            This field is a member of `oneof`_ ``selector``.
-        begin (google.cloud.spanner_v1.types.TransactionOptions):
-            Begin a new transaction and execute this read or SQL query
-            in it. The transaction ID of the new transaction is returned
-            in
-            [ResultSetMetadata.transaction][google.spanner.v1.ResultSetMetadata.transaction],
-            which is a [Transaction][google.spanner.v1.Transaction].
-
-            This field is a member of `oneof`_ ``selector``.
-    """
-
-    single_use: "TransactionOptions" = proto.Field(
-        proto.MESSAGE,
-        number=1,
-        oneof="selector",
-        message="TransactionOptions",
-    )
-    id: bytes = proto.Field(
-        proto.BYTES,
-        number=2,
-        oneof="selector",
-    )
-    begin: "TransactionOptions" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        oneof="selector",
-        message="TransactionOptions",
-    )
-
-
-class MultiplexedSessionPrecommitToken(proto.Message):
-    r"""When a read-write transaction is executed on a multiplexed session,
-    this precommit token is sent back to the client as a part of the
-    [Transaction][google.spanner.v1.Transaction] message in the
-    [BeginTransaction][google.spanner.v1.BeginTransactionRequest]
-    response and also as a part of the
-    [ResultSet][google.spanner.v1.ResultSet] and
-    [PartialResultSet][google.spanner.v1.PartialResultSet] responses.
-
-    Attributes:
-        precommit_token (bytes):
-            Opaque precommit token.
-        seq_num (int):
-            An incrementing seq number is generated on
-            every precommit token that is returned. Clients
-            should remember the precommit token with the
-            highest sequence number from the current
-            transaction attempt.
-    """
-
-    precommit_token: bytes = proto.Field(
-        proto.BYTES,
-        number=1,
-    )
-    seq_num: int = proto.Field(
-        proto.INT32,
-        number=2,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/google/cloud/spanner_v1/types/type.py b/google/cloud/spanner_v1/types/type.py
deleted file mode 100644
index e8258d6085..0000000000
--- a/google/cloud/spanner_v1/types/type.py
+++ /dev/null
@@ -1,287 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-from __future__ import annotations
-
-from typing import MutableMapping, MutableSequence
-
-import proto  # type: ignore
-
-__protobuf__ = proto.module(
-    package="google.spanner.v1",
-    manifest={
-        "TypeCode",
-        "TypeAnnotationCode",
-        "Type",
-        "StructType",
-    },
-)
-
-
-class TypeCode(proto.Enum):
-    r"""``TypeCode`` is used as part of [Type][google.spanner.v1.Type] to
-    indicate the type of a Cloud Spanner value.
-
-    Each legal value of a type can be encoded to or decoded from a JSON
-    value, using the encodings described below. All Cloud Spanner values
-    can be ``null``, regardless of type; ``null``\ s are always encoded
-    as a JSON ``null``.
-
-    Values:
-        TYPE_CODE_UNSPECIFIED (0):
-            Not specified.
-        BOOL (1):
-            Encoded as JSON ``true`` or ``false``.
-        INT64 (2):
-            Encoded as ``string``, in decimal format.
-        FLOAT64 (3):
-            Encoded as ``number``, or the strings ``"NaN"``,
-            ``"Infinity"``, or ``"-Infinity"``.
-        FLOAT32 (15):
-            Encoded as ``number``, or the strings ``"NaN"``,
-            ``"Infinity"``, or ``"-Infinity"``.
-        TIMESTAMP (4):
-            Encoded as ``string`` in RFC 3339 timestamp format. The time
-            zone must be present, and must be ``"Z"``.
-
-            If the schema has the column option
-            ``allow_commit_timestamp=true``, the placeholder string
-            ``"spanner.commit_timestamp()"`` can be used to instruct the
-            system to insert the commit timestamp associated with the
-            transaction commit.
-        DATE (5):
-            Encoded as ``string`` in RFC 3339 date format.
-        STRING (6):
-            Encoded as ``string``.
-        BYTES (7):
-            Encoded as a base64-encoded ``string``, as described in RFC
-            4648, section 4.
-        ARRAY (8):
-            Encoded as ``list``, where the list elements are represented
-            according to
-            [array_element_type][google.spanner.v1.Type.array_element_type].
-        STRUCT (9):
-            Encoded as ``list``, where list element ``i`` is represented
-            according to
-            [struct_type.fields[i]][google.spanner.v1.StructType.fields].
-        NUMERIC (10):
-            Encoded as ``string``, in decimal format or scientific
-            notation format. Decimal format: ``[+-]Digits[.[Digits]]``
-            or ``[+-][Digits].Digits``
-
-            Scientific notation:
-            ``[+-]Digits[.[Digits]][ExponentIndicator[+-]Digits]`` or
-            ``[+-][Digits].Digits[ExponentIndicator[+-]Digits]``
-            (ExponentIndicator is ``"e"`` or ``"E"``)
-        JSON (11):
-            Encoded as a JSON-formatted ``string`` as described in RFC
-            7159. The following rules are applied when parsing JSON
-            input:
-
-            - Whitespace characters are not preserved.
-            - If a JSON object has duplicate keys, only the first key is
-              preserved.
-            - Members of a JSON object are not guaranteed to have their
-              order preserved.
-            - JSON array elements will have their order preserved.
-        PROTO (13):
-            Encoded as a base64-encoded ``string``, as described in RFC
-            4648, section 4.
-        ENUM (14):
-            Encoded as ``string``, in decimal format.
-        INTERVAL (16):
-            Encoded as ``string``, in ``ISO8601`` duration format -
-            ``P[n]Y[n]M[n]DT[n]H[n]M[n[.fraction]]S`` where ``n`` is an
-            integer. For example, ``P1Y2M3DT4H5M6.5S`` represents time
-            duration of 1 year, 2 months, 3 days, 4 hours, 5 minutes,
-            and 6.5 seconds.
-        UUID (17):
-            Encoded as ``string``, in lower-case hexa-decimal format, as
-            described in RFC 9562, section 4.
-    """
-    TYPE_CODE_UNSPECIFIED = 0
-    BOOL = 1
-    INT64 = 2
-    FLOAT64 = 3
-    FLOAT32 = 15
-    TIMESTAMP = 4
-    DATE = 5
-    STRING = 6
-    BYTES = 7
-    ARRAY = 8
-    STRUCT = 9
-    NUMERIC = 10
-    JSON = 11
-    PROTO = 13
-    ENUM = 14
-    INTERVAL = 16
-    UUID = 17
-
-
-class TypeAnnotationCode(proto.Enum):
-    r"""``TypeAnnotationCode`` is used as a part of
-    [Type][google.spanner.v1.Type] to disambiguate SQL types that should
-    be used for a given Cloud Spanner value. Disambiguation is needed
-    because the same Cloud Spanner type can be mapped to different SQL
-    types depending on SQL dialect. TypeAnnotationCode doesn't affect
-    the way value is serialized.
-
-    Values:
-        TYPE_ANNOTATION_CODE_UNSPECIFIED (0):
-            Not specified.
-        PG_NUMERIC (2):
-            PostgreSQL compatible NUMERIC type. This annotation needs to
-            be applied to [Type][google.spanner.v1.Type] instances
-            having [NUMERIC][google.spanner.v1.TypeCode.NUMERIC] type
-            code to specify that values of this type should be treated
-            as PostgreSQL NUMERIC values. Currently this annotation is
-            always needed for
-            [NUMERIC][google.spanner.v1.TypeCode.NUMERIC] when a client
-            interacts with PostgreSQL-enabled Spanner databases.
-        PG_JSONB (3):
-            PostgreSQL compatible JSONB type. This annotation needs to
-            be applied to [Type][google.spanner.v1.Type] instances
-            having [JSON][google.spanner.v1.TypeCode.JSON] type code to
-            specify that values of this type should be treated as
-            PostgreSQL JSONB values. Currently this annotation is always
-            needed for [JSON][google.spanner.v1.TypeCode.JSON] when a
-            client interacts with PostgreSQL-enabled Spanner databases.
-        PG_OID (4):
-            PostgreSQL compatible OID type. This
-            annotation can be used by a client interacting
-            with PostgreSQL-enabled Spanner database to
-            specify that a value should be treated using the
-            semantics of the OID type.
-    """
-    TYPE_ANNOTATION_CODE_UNSPECIFIED = 0
-    PG_NUMERIC = 2
-    PG_JSONB = 3
-    PG_OID = 4
-
-
-class Type(proto.Message):
-    r"""``Type`` indicates the type of a Cloud Spanner value, as might be
-    stored in a table cell or returned from an SQL query.
-
-    Attributes:
-        code (google.cloud.spanner_v1.types.TypeCode):
-            Required. The [TypeCode][google.spanner.v1.TypeCode] for
-            this type.
-        array_element_type (google.cloud.spanner_v1.types.Type):
-            If [code][google.spanner.v1.Type.code] ==
-            [ARRAY][google.spanner.v1.TypeCode.ARRAY], then
-            ``array_element_type`` is the type of the array elements.
-        struct_type (google.cloud.spanner_v1.types.StructType):
-            If [code][google.spanner.v1.Type.code] ==
-            [STRUCT][google.spanner.v1.TypeCode.STRUCT], then
-            ``struct_type`` provides type information for the struct's
-            fields.
-        type_annotation (google.cloud.spanner_v1.types.TypeAnnotationCode):
-            The
-            [TypeAnnotationCode][google.spanner.v1.TypeAnnotationCode]
-            that disambiguates SQL type that Spanner will use to
-            represent values of this type during query processing. This
-            is necessary for some type codes because a single
-            [TypeCode][google.spanner.v1.TypeCode] can be mapped to
-            different SQL types depending on the SQL dialect.
-            [type_annotation][google.spanner.v1.Type.type_annotation]
-            typically is not needed to process the content of a value
-            (it doesn't affect serialization) and clients can ignore it
-            on the read path.
-        proto_type_fqn (str):
-            If [code][google.spanner.v1.Type.code] ==
-            [PROTO][google.spanner.v1.TypeCode.PROTO] or
-            [code][google.spanner.v1.Type.code] ==
-            [ENUM][google.spanner.v1.TypeCode.ENUM], then
-            ``proto_type_fqn`` is the fully qualified name of the proto
-            type representing the proto/enum definition.
-    """
-
-    code: "TypeCode" = proto.Field(
-        proto.ENUM,
-        number=1,
-        enum="TypeCode",
-    )
-    array_element_type: "Type" = proto.Field(
-        proto.MESSAGE,
-        number=2,
-        message="Type",
-    )
-    struct_type: "StructType" = proto.Field(
-        proto.MESSAGE,
-        number=3,
-        message="StructType",
-    )
-    type_annotation: "TypeAnnotationCode" = proto.Field(
-        proto.ENUM,
-        number=4,
-        enum="TypeAnnotationCode",
-    )
-    proto_type_fqn: str = proto.Field(
-        proto.STRING,
-        number=5,
-    )
-
-
-class StructType(proto.Message):
-    r"""``StructType`` defines the fields of a
-    [STRUCT][google.spanner.v1.TypeCode.STRUCT] type.
-
-    Attributes:
-        fields (MutableSequence[google.cloud.spanner_v1.types.StructType.Field]):
-            The list of fields that make up this struct. Order is
-            significant, because values of this struct type are
-            represented as lists, where the order of field values
-            matches the order of fields in the
-            [StructType][google.spanner.v1.StructType]. In turn, the
-            order of fields matches the order of columns in a read
-            request, or the order of fields in the ``SELECT`` clause of
-            a query.
-    """
-
-    class Field(proto.Message):
-        r"""Message representing a single field of a struct.
-
-        Attributes:
-            name (str):
-                The name of the field. For reads, this is the column name.
-                For SQL queries, it is the column alias (e.g., ``"Word"`` in
-                the query ``"SELECT 'hello' AS Word"``), or the column name
-                (e.g., ``"ColName"`` in the query
-                ``"SELECT ColName FROM Table"``). Some columns might have an
-                empty name (e.g., ``"SELECT UPPER(ColName)"``). Note that a
-                query result can contain multiple fields with the same name.
-            type_ (google.cloud.spanner_v1.types.Type):
-                The type of the field.
-        """
-
-        name: str = proto.Field(
-            proto.STRING,
-            number=1,
-        )
-        type_: "Type" = proto.Field(
-            proto.MESSAGE,
-            number=2,
-            message="Type",
-        )
-
-    fields: MutableSequence[Field] = proto.RepeatedField(
-        proto.MESSAGE,
-        number=1,
-        message=Field,
-    )
-
-
-__all__ = tuple(sorted(__protobuf__.manifest))
diff --git a/noxfile.py b/noxfile.py
deleted file mode 100644
index 9136bbde98..0000000000
--- a/noxfile.py
+++ /dev/null
@@ -1,679 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright 2024 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# DO NOT EDIT THIS FILE OUTSIDE OF `.librarian/generator-input`
-# The source of truth for this file is `.librarian/generator-input`
-
-
-# Generated by synthtool. DO NOT EDIT!
-
-from __future__ import absolute_import
-
-import os
-import pathlib
-import re
-import shutil
-from typing import Dict, List
-import warnings
-
-import nox
-
-FLAKE8_VERSION = "flake8==6.1.0"
-BLACK_VERSION = "black[jupyter]==23.7.0"
-ISORT_VERSION = "isort==5.11.0"
-LINT_PATHS = ["google", "tests", "noxfile.py", "setup.py"]
-
-DEFAULT_PYTHON_VERSION = "3.14"
-
-DEFAULT_MOCK_SERVER_TESTS_PYTHON_VERSION = "3.12"
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.14"]
-
-UNIT_TEST_PYTHON_VERSIONS: List[str] = [
-    "3.9",
-    "3.10",
-    "3.11",
-    "3.12",
-    "3.13",
-    "3.14",
-]
-UNIT_TEST_STANDARD_DEPENDENCIES = [
-    "mock",
-    "asyncmock",
-    "pytest",
-    "pytest-cov",
-    "pytest-asyncio",
-]
-MOCK_SERVER_ADDITIONAL_DEPENDENCIES = [
-    "google-cloud-testutils",
-]
-UNIT_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
-UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = []
-UNIT_TEST_DEPENDENCIES: List[str] = []
-UNIT_TEST_EXTRAS: List[str] = []
-UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
-
-SYSTEM_TEST_STANDARD_DEPENDENCIES: List[str] = [
-    "mock",
-    "pytest",
-    "pytest-asyncio",
-    "google-cloud-testutils",
-]
-SYSTEM_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
-SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = []
-SYSTEM_TEST_DEPENDENCIES: List[str] = []
-SYSTEM_TEST_EXTRAS: List[str] = [
-    "tracing",
-]
-SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
-
-CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
-
-nox.options.sessions = [
-    "unit-3.9",
-    "unit-3.10",
-    "unit-3.11",
-    "unit-3.12",
-    "unit-3.13",
-    "unit-3.14",
-    "system",
-    "cover",
-    "lint",
-    "lint_setup_py",
-    "blacken",
-    "docs",
-    "docfx",
-    "format",
-]
-
-# Error if a python version is missing
-nox.options.error_on_missing_interpreters = True
-
-
-@nox.session(python=DEFAULT_PYTHON_VERSION)
-def lint(session):
-    """Run linters.
-
-    Returns a failure if the linters find linting errors or sufficiently
-    serious code quality issues.
-    """
-    session.install(FLAKE8_VERSION, BLACK_VERSION)
-    session.run(
-        "black",
-        "--check",
-        *LINT_PATHS,
-    )
-    session.run("flake8", "google", "tests")
-
-
-# Use a python runtime which is available in the owlbot post processor here
-# https://github.com/googleapis/synthtool/blob/master/docker/owlbot/python/Dockerfile
-@nox.session(python=DEFAULT_PYTHON_VERSION)
-def blacken(session):
-    """Run black. Format code to uniform standard."""
-    session.install(BLACK_VERSION)
-    session.run(
-        "black",
-        *LINT_PATHS,
-    )
-
-
-@nox.session(python=DEFAULT_PYTHON_VERSION)
-def format(session):
-    """
-    Run isort to sort imports. Then run black
-    to format code to uniform standard.
-    """
-    session.install(BLACK_VERSION, ISORT_VERSION)
-    # Use the --fss option to sort imports using strict alphabetical order.
-    # See https://pycqa.github.io/isort/docs/configuration/options.html#force-sort-within-sections
-    session.run(
-        "isort",
-        "--fss",
-        *LINT_PATHS,
-    )
-    session.run(
-        "black",
-        *LINT_PATHS,
-    )
-
-
-@nox.session(python=DEFAULT_PYTHON_VERSION)
-def lint_setup_py(session):
-    """Verify that setup.py is valid (including RST check)."""
-    session.install("docutils", "pygments", "setuptools>=79.0.1")
-    session.run("python", "setup.py", "check", "--restructuredtext", "--strict")
-
-
-def install_unittest_dependencies(session, *constraints):
-    standard_deps = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_DEPENDENCIES
-    session.install(*standard_deps, *constraints)
-
-    if UNIT_TEST_EXTERNAL_DEPENDENCIES:
-        warnings.warn(
-            "'unit_test_external_dependencies' is deprecated. Instead, please "
-            "use 'unit_test_dependencies' or 'unit_test_local_dependencies'.",
-            DeprecationWarning,
-        )
-        session.install(*UNIT_TEST_EXTERNAL_DEPENDENCIES, *constraints)
-
-    if UNIT_TEST_LOCAL_DEPENDENCIES:
-        session.install(*UNIT_TEST_LOCAL_DEPENDENCIES, *constraints)
-
-    if UNIT_TEST_EXTRAS_BY_PYTHON:
-        extras = UNIT_TEST_EXTRAS_BY_PYTHON.get(session.python, [])
-    elif UNIT_TEST_EXTRAS:
-        extras = UNIT_TEST_EXTRAS
-    else:
-        extras = []
-
-    if extras:
-        session.install("-e", f".[{','.join(extras)}]", *constraints)
-    else:
-        session.install("-e", ".", *constraints)
-
-    # XXX Work around Kokoro image's older pip, which borks the OT install.
-    session.run("pip", "install", "--upgrade", "pip")
-    constraints_path = str(
-        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
-    )
-    session.install("-e", ".[tracing]", "-c", constraints_path)
-    # XXX: Dump installed versions to debug OT issue
-    session.run("pip", "list")
-
-
-@nox.session(python=UNIT_TEST_PYTHON_VERSIONS)
-@nox.parametrize(
-    "protobuf_implementation",
-    ["python", "upb", "cpp"],
-)
-def unit(session, protobuf_implementation):
-    # Install all test dependencies, then install this package in-place.
-
-    if protobuf_implementation == "cpp" and session.python in (
-        "3.11",
-        "3.12",
-        "3.13",
-        "3.14",
-    ):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
-    constraints_path = str(
-        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
-    )
-    install_unittest_dependencies(session, "-c", constraints_path)
-
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
-    # Run py.test against the unit tests.
-    args = [
-        "py.test",
-        "-s",
-        f"--junitxml=unit_{session.python}_sponge_log.xml",
-        "--cov=google",
-        "--cov=tests/unit",
-        "--cov-append",
-        "--cov-config=.coveragerc",
-        "--cov-report=",
-        "--cov-fail-under=0",
-    ]
-    if not session.posargs:
-        args.append(os.path.join("tests", "unit"))
-    args.extend(session.posargs)
-
-    session.run(
-        *args,
-        env={
-            "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-        },
-    )
-
-
-@nox.session(python=DEFAULT_MOCK_SERVER_TESTS_PYTHON_VERSION)
-def mockserver(session):
-    # Install all test dependencies, then install this package in-place.
-
-    constraints_path = str(
-        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
-    )
-    standard_deps = (
-        UNIT_TEST_STANDARD_DEPENDENCIES
-        + UNIT_TEST_DEPENDENCIES
-        + MOCK_SERVER_ADDITIONAL_DEPENDENCIES
-    )
-    session.install(*standard_deps, "-c", constraints_path)
-    session.install("-e", ".", "-c", constraints_path)
-
-    # Run py.test against the mockserver tests.
-    session.run(
-        "py.test",
-        "--quiet",
-        f"--junitxml=unit_{session.python}_sponge_log.xml",
-        "--cov=google",
-        "--cov=tests/unit",
-        "--cov-append",
-        "--cov-config=.coveragerc",
-        "--cov-report=",
-        "--cov-fail-under=0",
-        os.path.join("tests", "mockserver_tests"),
-        *session.posargs,
-    )
-
-
-def install_systemtest_dependencies(session, *constraints):
-    # Use pre-release gRPC for system tests.
-    # Exclude version 1.52.0rc1 which has a known issue.
-    # See https://github.com/grpc/grpc/issues/32163
-    session.install("--pre", "grpcio!=1.52.0rc1")
-
-    session.install(*SYSTEM_TEST_STANDARD_DEPENDENCIES, *constraints)
-
-    if SYSTEM_TEST_EXTERNAL_DEPENDENCIES:
-        session.install(*SYSTEM_TEST_EXTERNAL_DEPENDENCIES, *constraints)
-
-    if SYSTEM_TEST_LOCAL_DEPENDENCIES:
-        session.install("-e", *SYSTEM_TEST_LOCAL_DEPENDENCIES, *constraints)
-
-    if SYSTEM_TEST_DEPENDENCIES:
-        session.install("-e", *SYSTEM_TEST_DEPENDENCIES, *constraints)
-
-    if SYSTEM_TEST_EXTRAS_BY_PYTHON:
-        extras = SYSTEM_TEST_EXTRAS_BY_PYTHON.get(session.python, [])
-    elif SYSTEM_TEST_EXTRAS:
-        extras = SYSTEM_TEST_EXTRAS
-    else:
-        extras = []
-
-    if extras:
-        session.install("-e", f".[{','.join(extras)}]", *constraints)
-    else:
-        session.install("-e", ".", *constraints)
-
-
-@nox.session(python=SYSTEM_TEST_PYTHON_VERSIONS)
-@nox.parametrize(
-    "protobuf_implementation,database_dialect",
-    [
-        ("python", "GOOGLE_STANDARD_SQL"),
-        ("python", "POSTGRESQL"),
-        ("upb", "GOOGLE_STANDARD_SQL"),
-        ("upb", "POSTGRESQL"),
-        ("cpp", "GOOGLE_STANDARD_SQL"),
-        ("cpp", "POSTGRESQL"),
-    ],
-)
-def system(session, protobuf_implementation, database_dialect):
-    """Run the system test suite."""
-    constraints_path = str(
-        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
-    )
-    system_test_path = os.path.join("tests", "system.py")
-    system_test_folder_path = os.path.join("tests", "system")
-
-    # Check the value of `RUN_SYSTEM_TESTS` env var. It defaults to true.
-    if os.environ.get("RUN_SYSTEM_TESTS", "true") == "false":
-        session.skip("RUN_SYSTEM_TESTS is set to false, skipping")
-    # Sanity check: Only run tests if the environment variable is set.
-    if not os.environ.get("GOOGLE_APPLICATION_CREDENTIALS", "") and not os.environ.get(
-        "SPANNER_EMULATOR_HOST", ""
-    ):
-        session.skip(
-            "Credentials or emulator host must be set via environment variable"
-        )
-    if not (
-        os.environ.get("SPANNER_EMULATOR_HOST") or protobuf_implementation == "python"
-    ):
-        session.skip(
-            "Only run system tests on real Spanner with one protobuf implementation to speed up the build"
-        )
-
-    if protobuf_implementation == "cpp" and session.python in (
-        "3.11",
-        "3.12",
-        "3.13",
-        "3.14",
-    ):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
-    # Install pyopenssl for mTLS testing.
-    if os.environ.get("GOOGLE_API_USE_CLIENT_CERTIFICATE", "false") == "true":
-        session.install("pyopenssl")
-
-    system_test_exists = os.path.exists(system_test_path)
-    system_test_folder_exists = os.path.exists(system_test_folder_path)
-    # Sanity check: only run tests if found.
-    if not system_test_exists and not system_test_folder_exists:
-        session.skip("System tests were not found")
-
-    install_systemtest_dependencies(session, "-c", constraints_path)
-
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
-    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
-    # The 'cpp' implementation requires Protobuf<4.
-    if protobuf_implementation == "cpp":
-        session.install("protobuf<4")
-
-    # Run py.test against the system tests.
-    if system_test_exists:
-        args = [
-            "py.test",
-            "--quiet",
-            "-o",
-            "asyncio_mode=auto",
-            f"--junitxml=system_{session.python}_sponge_log.xml",
-        ]
-        if not session.posargs:
-            args.append(system_test_path)
-        args.extend(session.posargs)
-
-        session.run(
-            *args,
-            env={
-                "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-                "SPANNER_DATABASE_DIALECT": database_dialect,
-                "SKIP_BACKUP_TESTS": "true",
-            },
-        )
-    elif system_test_folder_exists:
-        # Run sync tests
-        sync_args = [
-            "py.test",
-            "--quiet",
-            "-o",
-            "asyncio_mode=auto",
-            f"--junitxml=system_{session.python}_sync_sponge_log.xml",
-        ]
-        if not session.posargs:
-            sync_args.append(os.path.join("tests", "system"))
-            sync_args.append("--ignore=tests/system/_async")
-        else:
-            sync_args.extend(session.posargs)
-
-        session.run(
-            *sync_args,
-            env={
-                "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-                "SPANNER_DATABASE_DIALECT": database_dialect,
-                "SKIP_BACKUP_TESTS": "true",
-            },
-        )
-
-        # Run async tests
-        async_args = [
-            "py.test",
-            "--quiet",
-            "-o",
-            "asyncio_mode=auto",
-            f"--junitxml=system_{session.python}_async_sponge_log.xml",
-        ]
-        if not session.posargs:
-            async_args.append(os.path.join("tests", "system", "_async"))
-        else:
-            # If posargs are provided, only run if they match async tests
-            # or just skip if they were already run in sync.
-            # For simplicity, we only run async folder if no posargs.
-            return
-
-        session.run(
-            *async_args,
-            env={
-                "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-                "SPANNER_DATABASE_DIALECT": database_dialect,
-                "SKIP_BACKUP_TESTS": "true",
-            },
-        )
-
-
-@nox.session(python=DEFAULT_PYTHON_VERSION)
-def cover(session):
-    """Run the final coverage report.
-
-    This outputs the coverage report aggregating coverage from the unit
-    test runs (not system test runs), and then erases coverage data.
-    """
-    session.install("coverage", "pytest-cov")
-    session.run("coverage", "report", "--show-missing", "--fail-under=98")
-
-    session.run("coverage", "erase")
-
-
-@nox.session(python="3.10")
-def docs(session):
-    """Build the docs for this library."""
-
-    session.install("-e", ".[tracing]")
-    session.install(
-        # We need to pin to specific versions of the `sphinxcontrib-*` packages
-        # which still support sphinx 4.x.
-        # See https://github.com/googleapis/sphinx-docfx-yaml/issues/344
-        # and https://github.com/googleapis/sphinx-docfx-yaml/issues/345.
-        "sphinxcontrib-applehelp==1.0.4",
-        "sphinxcontrib-devhelp==1.0.2",
-        "sphinxcontrib-htmlhelp==2.0.1",
-        "sphinxcontrib-qthelp==1.0.3",
-        "sphinxcontrib-serializinghtml==1.1.5",
-        "sphinx==4.5.0",
-        "alabaster",
-        "recommonmark",
-    )
-
-    shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
-    session.run(
-        "sphinx-build",
-        "-W",  # warnings as errors
-        "-T",  # show full traceback on exception
-        "-N",  # no colors
-        "-b",
-        "html",
-        "-d",
-        os.path.join("docs", "_build", "doctrees", ""),
-        os.path.join("docs", ""),
-        os.path.join("docs", "_build", "html", ""),
-    )
-
-
-@nox.session(python="3.10")
-def docfx(session):
-    """Build the docfx yaml files for this library."""
-
-    session.install("-e", ".[tracing]")
-    session.install(
-        # We need to pin to specific versions of the `sphinxcontrib-*` packages
-        # which still support sphinx 4.x.
-        # See https://github.com/googleapis/sphinx-docfx-yaml/issues/344
-        # and https://github.com/googleapis/sphinx-docfx-yaml/issues/345.
-        "sphinxcontrib-applehelp==1.0.4",
-        "sphinxcontrib-devhelp==1.0.2",
-        "sphinxcontrib-htmlhelp==2.0.1",
-        "sphinxcontrib-qthelp==1.0.3",
-        "sphinxcontrib-serializinghtml==1.1.5",
-        "gcp-sphinx-docfx-yaml",
-        "alabaster",
-        "recommonmark",
-    )
-
-    shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
-    session.run(
-        "sphinx-build",
-        "-T",  # show full traceback on exception
-        "-N",  # no colors
-        "-D",
-        (
-            "extensions=sphinx.ext.autodoc,"
-            "sphinx.ext.autosummary,"
-            "docfx_yaml.extension,"
-            "sphinx.ext.intersphinx,"
-            "sphinx.ext.coverage,"
-            "sphinx.ext.napoleon,"
-            "sphinx.ext.todo,"
-            "sphinx.ext.viewcode,"
-            "recommonmark"
-        ),
-        "-b",
-        "html",
-        "-d",
-        os.path.join("docs", "_build", "doctrees", ""),
-        os.path.join("docs", ""),
-        os.path.join("docs", "_build", "html", ""),
-    )
-
-
-@nox.session(python="3.14")
-@nox.parametrize(
-    "protobuf_implementation,database_dialect",
-    [
-        ("python", "GOOGLE_STANDARD_SQL"),
-        ("python", "POSTGRESQL"),
-        ("upb", "GOOGLE_STANDARD_SQL"),
-        ("upb", "POSTGRESQL"),
-        ("cpp", "GOOGLE_STANDARD_SQL"),
-        ("cpp", "POSTGRESQL"),
-    ],
-)
-def prerelease_deps(session, protobuf_implementation, database_dialect):
-    """Run all tests with prerelease versions of dependencies installed."""
-
-    if protobuf_implementation == "cpp" and session.python in (
-        "3.11",
-        "3.12",
-        "3.13",
-        "3.14",
-    ):
-        session.skip("cpp implementation is not supported in python 3.11+")
-
-    # Install all dependencies
-    session.install("-e", ".[all, tests, tracing]")
-    unit_deps_all = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_EXTERNAL_DEPENDENCIES
-    session.install(*unit_deps_all)
-    system_deps_all = (
-        SYSTEM_TEST_STANDARD_DEPENDENCIES + SYSTEM_TEST_EXTERNAL_DEPENDENCIES
-    )
-    session.install(*system_deps_all)
-
-    # Because we test minimum dependency versions on the minimum Python
-    # version, the first version we test with in the unit tests sessions has a
-    # constraints file containing all dependencies and extras.
-    with open(
-        CURRENT_DIRECTORY
-        / "testing"
-        / f"constraints-{UNIT_TEST_PYTHON_VERSIONS[0]}.txt",
-        encoding="utf-8",
-    ) as constraints_file:
-        constraints_text = constraints_file.read()
-
-    # Ignore leading whitespace and comment lines.
-    constraints_deps = [
-        match.group(1)
-        for match in re.finditer(
-            r"^\s*([a-zA-Z0-9._-]+)", constraints_text, flags=re.MULTILINE
-        )
-    ]
-
-    if constraints_deps:
-        session.install(*constraints_deps)
-
-    prerel_deps = [
-        "protobuf",
-        # dependency of grpc
-        "six",
-        "grpc-google-iam-v1",
-        "googleapis-common-protos",
-        "grpcio",
-        "grpcio-status",
-        "google-api-core",
-        "google-auth",
-        "proto-plus",
-        "google-cloud-testutils",
-        # dependencies of google-cloud-testutils"
-        "click",
-        # dependency of google-auth
-        "cffi",
-        "cryptography",
-        "cachetools",
-    ]
-
-    for dep in prerel_deps:
-        session.install("--pre", "--no-deps", "--upgrade", dep)
-
-    # Remaining dependencies
-    other_deps = [
-        "requests",
-    ]
-    session.install(*other_deps)
-
-    # Print out prerelease package versions
-    session.run(
-        "python", "-c", "import google.protobuf; print(google.protobuf.__version__)"
-    )
-    session.run("python", "-c", "import grpc; print(grpc.__version__)")
-    session.run("python", "-c", "import google.auth; print(google.auth.__version__)")
-
-    session.run(
-        "py.test",
-        "tests/unit",
-        env={
-            "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-            "SPANNER_DATABASE_DIALECT": database_dialect,
-            "SKIP_BACKUP_TESTS": "true",
-        },
-    )
-
-    system_test_path = os.path.join("tests", "system.py")
-    system_test_folder_path = os.path.join("tests", "system")
-
-    # Only run system tests for one protobuf implementation on real Spanner to speed up the build.
-    if os.environ.get("SPANNER_EMULATOR_HOST") or protobuf_implementation == "python":
-        # Only run system tests if found.
-        if os.path.exists(system_test_path):
-            session.run(
-                "py.test",
-                "--verbose",
-                "-o",
-                "asyncio_mode=auto",
-                f"--junitxml=system_{session.python}_sponge_log.xml",
-                system_test_path,
-                *session.posargs,
-                env={
-                    "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-                    "SPANNER_DATABASE_DIALECT": database_dialect,
-                    "SKIP_BACKUP_TESTS": "true",
-                },
-            )
-        elif os.path.exists(system_test_folder_path):
-            session.run(
-                "py.test",
-                "--verbose",
-                "-o",
-                "asyncio_mode=auto",
-                f"--junitxml=system_{session.python}_sponge_log.xml",
-                system_test_folder_path,
-                *session.posargs,
-                env={
-                    "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-                    "SPANNER_DATABASE_DIALECT": database_dialect,
-                    "SKIP_BACKUP_TESTS": "true",
-                },
-            )
-
-
-@nox.session(python=DEFAULT_PYTHON_VERSION)
-def generate(session):
-    """Regenerate synchronous code from asynchronous code."""
-    session.install("black", "autoflake")
-    session.run("python", ".cross_sync/generate.py", "google/cloud/spanner_v1")
diff --git a/renovate.json b/renovate.json
deleted file mode 100644
index c7875c469b..0000000000
--- a/renovate.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "extends": [
-    "config:base",
-    "group:all",
-    ":preserveSemverRanges",
-    ":disableDependencyDashboard"
-  ],
-  "ignorePaths": [".pre-commit-config.yaml", ".kokoro/requirements.txt", "setup.py", ".github/workflows/unittest.yml"],
-  "pip_requirements": {
-    "fileMatch": ["requirements-test.txt", "samples/[\\S/]*constraints.txt", "samples/[\\S/]*constraints-test.txt"]
-  }
-}
diff --git a/samples/AUTHORING_GUIDE.md b/samples/AUTHORING_GUIDE.md
deleted file mode 100644
index 8249522ffc..0000000000
--- a/samples/AUTHORING_GUIDE.md
+++ /dev/null
@@ -1 +0,0 @@
-See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/AUTHORING_GUIDE.md
\ No newline at end of file
diff --git a/samples/CONTRIBUTING.md b/samples/CONTRIBUTING.md
deleted file mode 100644
index f5fe2e6baf..0000000000
--- a/samples/CONTRIBUTING.md
+++ /dev/null
@@ -1 +0,0 @@
-See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/CONTRIBUTING.md
\ No newline at end of file
diff --git a/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
deleted file mode 100644
index ec138c20e2..0000000000
--- a/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
+++ /dev/null
@@ -1,4480 +0,0 @@
-{
-  "clientLibrary": {
-    "apis": [
-      {
-        "id": "google.spanner.admin.database.v1",
-        "version": "v1"
-      }
-    ],
-    "language": "PYTHON",
-    "name": "google-cloud-spanner-admin-database",
-    "version": "3.63.0"
-  },
-  "snippets": [
-    {
-      "canonical": true,
-      "clientMethod": {
-        "async": true,
-        "client": {
-          "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminAsyncClient",
-          "shortName": "DatabaseAdminAsyncClient"
-        },
-        "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminAsyncClient.add_split_points",
-        "method": {
-          "fullName": "google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints",
-          "service": {
-            "fullName": "google.spanner.admin.database.v1.DatabaseAdmin",
-            "shortName": "DatabaseAdmin"
-          },
-          "shortName": "AddSplitPoints"
-        },
-        "parameters": [
-          {
-            "name": "request",
-            "type": "google.cloud.spanner_admin_database_v1.types.AddSplitPointsRequest"
-          },
-          {
-            "name": "database",
-            "type": "str"
-          },
-          {
-            "name": "split_points",
-            "type": "MutableSequence[google.cloud.spanner_admin_database_v1.types.SplitPoints]"
-          },
-          {
-            "name": "retry",
-            "type": "google.api_core.retry.Retry"
-          },
-          {
-            "name": "timeout",
-            "type": "float"
-          },
-          {
-            "name": "metadata",
-            "type": "Sequence[Tuple[str, Union[str, bytes]]]"
-          }
-        ],
-        "resultType": "google.cloud.spanner_admin_database_v1.types.AddSplitPointsResponse",
-        "shortName": "add_split_points"
-      },
-      "description": "Sample for AddSplitPoints",
-      "file": "spanner_v1_generated_database_admin_add_split_points_async.py",
-      "language": "PYTHON",
-      "origin": "API_DEFINITION",
-      "regionTag": "spanner_v1_generated_DatabaseAdmin_AddSplitPoints_async",
-      "segments": [
-        {
-          "end": 51,
-          "start": 27,
-          "type": "FULL"
-        },
-        {
-          "end": 51,
-          "start": 27,
-          "type": "SHORT"
-        },
-        {
-          "end": 40,
-          "start": 38,
-          "type": "CLIENT_INITIALIZATION"
-        },
-        {
-          "end": 45,
-          "start": 41,
-          "type": "REQUEST_INITIALIZATION"
-        },
-        {
-          "end": 48,
-          "start": 46,
-          "type": "REQUEST_EXECUTION"
-        },
-        {
-          "end": 52,
-          "start": 49,
-          "type": "RESPONSE_HANDLING"
-        }
-      ],
-      "title": "spanner_v1_generated_database_admin_add_split_points_async.py"
-    },
-    {
-      "canonical": true,
-      "clientMethod": {
-        "client": {
-          "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminClient",
-          "shortName": "DatabaseAdminClient"
-        },
-        "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminClient.add_split_points",
-        "method": {
-          "fullName": "google.spanner.admin.database.v1.DatabaseAdmin.AddSplitPoints",
-          "service": {
-            "fullName": "google.spanner.admin.database.v1.DatabaseAdmin",
-            "shortName": "DatabaseAdmin"
-          },
-          "shortName": "AddSplitPoints"
-        },
-        "parameters": [
-          {
-            "name": "request",
-            "type": "google.cloud.spanner_admin_database_v1.types.AddSplitPointsRequest"
-          },
-          {
-            "name": "database",
-            "type": "str"
-          },
-          {
-            "name": "split_points",
-            "type": "MutableSequence[google.cloud.spanner_admin_database_v1.types.SplitPoints]"
-          },
-          {
-            "name": "retry",
-            "type": "google.api_core.retry.Retry"
-          },
-          {
-            "name": "timeout",
-            "type": "float"
-          },
-          {
-            "name": "metadata",
-            "type": "Sequence[Tuple[str, Union[str, bytes]]]"
-          }
-        ],
-        "resultType": "google.cloud.spanner_admin_database_v1.types.AddSplitPointsResponse",
-        "shortName": "add_split_points"
-      },
-      "description": "Sample for AddSplitPoints",
-      "file": "spanner_v1_generated_database_admin_add_split_points_sync.py",
-      "language": "PYTHON",
-      "origin": "API_DEFINITION",
-      "regionTag": "spanner_v1_generated_DatabaseAdmin_AddSplitPoints_sync",
-      "segments": [
-        {
-          "end": 51,
-          "start": 27,
-          "type": "FULL"
-        },
-        {
-          "end": 51,
-          "start": 27,
-          "type": "SHORT"
-        },
-        {
-          "end": 40,
-          "start": 38,
-          "type": "CLIENT_INITIALIZATION"
-        },
-        {
-          "end": 45,
-          "start": 41,
-          "type": "REQUEST_INITIALIZATION"
-        },
-        {
-          "end": 48,
-          "start": 46,
-          "type": "REQUEST_EXECUTION"
-        },
-        {
-          "end": 52,
-          "start": 49,
-          "type": "RESPONSE_HANDLING"
-        }
-      ],
-      "title": "spanner_v1_generated_database_admin_add_split_points_sync.py"
-    },
-    {
-      "canonical": true,
-      "clientMethod": {
-        "async": true,
-        "client": {
-          "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminAsyncClient",
-          "shortName": "DatabaseAdminAsyncClient"
-        },
-        "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminAsyncClient.copy_backup",
-        "method": {
-          "fullName": "google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup",
-          "service": {
-            "fullName": "google.spanner.admin.database.v1.DatabaseAdmin",
-            "shortName": "DatabaseAdmin"
-          },
-          "shortName": "CopyBackup"
-        },
-        "parameters": [
-          {
-            "name": "request",
-            "type": "google.cloud.spanner_admin_database_v1.types.CopyBackupRequest"
-          },
-          {
-            "name": "parent",
-            "type": "str"
-          },
-          {
-            "name": "backup_id",
-            "type": "str"
-          },
-          {
-            "name": "source_backup",
-            "type": "str"
-          },
-          {
-            "name": "expire_time",
-            "type": "google.protobuf.timestamp_pb2.Timestamp"
-          },
-          {
-            "name": "retry",
-            "type": "google.api_core.retry.Retry"
-          },
-          {
-            "name": "timeout",
-            "type": "float"
-          },
-          {
-            "name": "metadata",
-            "type": "Sequence[Tuple[str, Union[str, bytes]]]"
-          }
-        ],
-        "resultType": "google.api_core.operation_async.AsyncOperation",
-        "shortName": "copy_backup"
-      },
-      "description": "Sample for CopyBackup",
-      "file": "spanner_v1_generated_database_admin_copy_backup_async.py",
-      "language": "PYTHON",
-      "origin": "API_DEFINITION",
-      "regionTag": "spanner_v1_generated_DatabaseAdmin_CopyBackup_async",
-      "segments": [
-        {
-          "end": 57,
-          "start": 27,
-          "type": "FULL"
-        },
-        {
-          "end": 57,
-          "start": 27,
-          "type": "SHORT"
-        },
-        {
-          "end": 40,
-          "start": 38,
-          "type": "CLIENT_INITIALIZATION"
-        },
-        {
-          "end": 47,
-          "start": 41,
-          "type": "REQUEST_INITIALIZATION"
-        },
-        {
-          "end": 54,
-          "start": 48,
-          "type": "REQUEST_EXECUTION"
-        },
-        {
-          "end": 58,
-          "start": 55,
-          "type": "RESPONSE_HANDLING"
-        }
-      ],
-      "title": "spanner_v1_generated_database_admin_copy_backup_async.py"
-    },
-    {
-      "canonical": true,
-      "clientMethod": {
-        "client": {
-          "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminClient",
-          "shortName": "DatabaseAdminClient"
-        },
-        "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminClient.copy_backup",
-        "method": {
-          "fullName": "google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup",
-          "service": {
-            "fullName": "google.spanner.admin.database.v1.DatabaseAdmin",
-            "shortName": "DatabaseAdmin"
-          },
-          "shortName": "CopyBackup"
-        },
-        "parameters": [
-          {
-            "name": "request",
-            "type": "google.cloud.spanner_admin_database_v1.types.CopyBackupRequest"
-          },
-          {
-            "name": "parent",
-            "type": "str"
-          },
-          {
-            "name": "backup_id",
-            "type": "str"
-          },
-          {
-            "name": "source_backup",
-            "type": "str"
-          },
-          {
-            "name": "expire_time",
-            "type": "google.protobuf.timestamp_pb2.Timestamp"
-          },
-          {
-            "name": "retry",
-            "type": "google.api_core.retry.Retry"
-          },
-          {
-            "name": "timeout",
-            "type": "float"
-          },
-          {
-            "name": "metadata",
-            "type": "Sequence[Tuple[str, Union[str, bytes]]]"
-          }
-        ],
-        "resultType": "google.api_core.operation.Operation",
-        "shortName": "copy_backup"
-      },
-      "description": "Sample for CopyBackup",
-      "file": "spanner_v1_generated_database_admin_copy_backup_sync.py",
-      "language": "PYTHON",
-      "origin": "API_DEFINITION",
-      "regionTag": "spanner_v1_generated_DatabaseAdmin_CopyBackup_sync",
-      "segments": [
-        {
-          "end": 57,
-          "start": 27,
-          "type": "FULL"
-        },
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-          "end": 57,
-          "start": 27,
-          "type": "SHORT"
-        },
-        {
-          "end": 40,
-          "start": 38,
-          "type": "CLIENT_INITIALIZATION"
-        },
-        {
-          "end": 47,
-          "start": 41,
-          "type": "REQUEST_INITIALIZATION"
-        },
-        {
-          "end": 54,
-          "start": 48,
-          "type": "REQUEST_EXECUTION"
-        },
-        {
-          "end": 58,
-          "start": 55,
-          "type": "RESPONSE_HANDLING"
-        }
-      ],
-      "title": "spanner_v1_generated_database_admin_copy_backup_sync.py"
-    },
-    {
-      "canonical": true,
-      "clientMethod": {
-        "async": true,
-        "client": {
-          "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminAsyncClient",
-          "shortName": "DatabaseAdminAsyncClient"
-        },
-        "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminAsyncClient.create_backup_schedule",
-        "method": {
-          "fullName": "google.spanner.admin.database.v1.DatabaseAdmin.CreateBackupSchedule",
-          "service": {
-            "fullName": "google.spanner.admin.database.v1.DatabaseAdmin",
-            "shortName": "DatabaseAdmin"
-          },
-          "shortName": "CreateBackupSchedule"
-        },
-        "parameters": [
-          {
-            "name": "request",
-            "type": "google.cloud.spanner_admin_database_v1.types.CreateBackupScheduleRequest"
-          },
-          {
-            "name": "parent",
-            "type": "str"
-          },
-          {
-            "name": "backup_schedule",
-            "type": "google.cloud.spanner_admin_database_v1.types.BackupSchedule"
-          },
-          {
-            "name": "backup_schedule_id",
-            "type": "str"
-          },
-          {
-            "name": "retry",
-            "type": "google.api_core.retry.Retry"
-          },
-          {
-            "name": "timeout",
-            "type": "float"
-          },
-          {
-            "name": "metadata",
-            "type": "Sequence[Tuple[str, Union[str, bytes]]]"
-          }
-        ],
-        "resultType": "google.cloud.spanner_admin_database_v1.types.BackupSchedule",
-        "shortName": "create_backup_schedule"
-      },
-      "description": "Sample for CreateBackupSchedule",
-      "file": "spanner_v1_generated_database_admin_create_backup_schedule_async.py",
-      "language": "PYTHON",
-      "origin": "API_DEFINITION",
-      "regionTag": "spanner_v1_generated_DatabaseAdmin_CreateBackupSchedule_async",
-      "segments": [
-        {
-          "end": 52,
-          "start": 27,
-          "type": "FULL"
-        },
-        {
-          "end": 52,
-          "start": 27,
-          "type": "SHORT"
-        },
-        {
-          "end": 40,
-          "start": 38,
-          "type": "CLIENT_INITIALIZATION"
-        },
-        {
-          "end": 46,
-          "start": 41,
-          "type": "REQUEST_INITIALIZATION"
-        },
-        {
-          "end": 49,
-          "start": 47,
-          "type": "REQUEST_EXECUTION"
-        },
-        {
-          "end": 53,
-          "start": 50,
-          "type": "RESPONSE_HANDLING"
-        }
-      ],
-      "title": "spanner_v1_generated_database_admin_create_backup_schedule_async.py"
-    },
-    {
-      "canonical": true,
-      "clientMethod": {
-        "client": {
-          "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminClient",
-          "shortName": "DatabaseAdminClient"
-        },
-        "fullName": "google.cloud.spanner_admin_database_v1.DatabaseAdminClient.create_backup_schedule",
-        "method": {
-          "fullName": "google.spanner.admin.database.v1.DatabaseAdmin.CreateBackupSchedule",
-          "service": {
-            "fullName": "google.spanner.admin.database.v1.DatabaseAdmin",
-            "shortName": "DatabaseAdmin"
-          },
-          "shortName": "CreateBackupSchedule"
-        },
-        "parameters": [
-          {
-            "name": "request",
-            "type": "google.cloud.spanner_admin_database_v1.types.CreateBackupScheduleRequest"
-          },
-          {
-            "name": "parent",
-            "type": "str"
-          },
-          {
-            "name": "backup_schedule",
-            "type": "google.cloud.spanner_admin_database_v1.types.BackupSchedule"
-          },
-          {
-            "name": "backup_schedule_id",
-            "type": "str"
-          },
-          {
-            "name": "retry",
-            "type": "google.api_core.retry.Retry"
-          },
-          {
-            "name": "timeout",
-            "type": "float"
-          },
-          {
-            "name": "metadata",
-            "type": "Sequence[Tuple[str, Union[str, bytes]]]"
-          }
-        ],
-        "resultType": "google.cloud.spanner_admin_database_v1.types.BackupSchedule",
-        "shortName": "create_backup_schedule"
-      },
-      "description": "Sample for CreateBackupSchedule",
-      "file": "spanner_v1_generated_database_admin_create_backup_schedule_sync.py",
-      "language": "PYTHON",
-      "origin": "API_DEFINITION",
-      "regionTag": "spanner_v1_generated_DatabaseAdmin_CreateBackupSchedule_sync",
-      "segments": [
-        {
-          "end": 52,
-          "start": 27,
-          "type": "FULL"
-        },
-        {
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diff --git a/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
deleted file mode 100644
index 43dc634044..0000000000
--- a/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
+++ /dev/null
@@ -1,3450 +0,0 @@
-{
-  "clientLibrary": {
-    "apis": [
-      {
-        "id": "google.spanner.admin.instance.v1",
-        "version": "v1"
-      }
-    ],
-    "language": "PYTHON",
-    "name": "google-cloud-spanner-admin-instance",
-    "version": "3.63.0"
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-          "shortName": "InstanceAdminAsyncClient"
-        },
-        "fullName": "google.cloud.spanner_admin_instance_v1.InstanceAdminAsyncClient.create_instance_config",
-        "method": {
-          "fullName": "google.spanner.admin.instance.v1.InstanceAdmin.CreateInstanceConfig",
-          "service": {
-            "fullName": "google.spanner.admin.instance.v1.InstanceAdmin",
-            "shortName": "InstanceAdmin"
-          },
-          "shortName": "CreateInstanceConfig"
-        },
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-            "type": "google.cloud.spanner_admin_instance_v1.types.CreateInstanceConfigRequest"
-          },
-          {
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-            "type": "google.cloud.spanner_admin_instance_v1.types.InstanceConfig"
-          },
-          {
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-            "type": "str"
-          },
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-            "type": "google.api_core.retry.Retry"
-          },
-          {
-            "name": "timeout",
-            "type": "float"
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-          }
-        ],
-        "resultType": "google.api_core.operation_async.AsyncOperation",
-        "shortName": "create_instance_config"
-      },
-      "description": "Sample for CreateInstanceConfig",
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-          "service": {
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-            "shortName": "InstanceAdmin"
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-          "shortName": "CreateInstanceConfig"
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-          },
-          {
-            "name": "parent",
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-          }
-        ],
-        "resultType": "google.api_core.operation_async.AsyncOperation",
-        "shortName": "update_instance_partition"
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-          }
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diff --git a/samples/generated_samples/snippet_metadata_google.spanner.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.v1.json
deleted file mode 100644
index f1fe6ba9db..0000000000
--- a/samples/generated_samples/snippet_metadata_google.spanner.v1.json
+++ /dev/null
@@ -1,2579 +0,0 @@
-{
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-        "id": "google.spanner.v1",
-        "version": "v1"
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-          "service": {
-            "fullName": "google.spanner.v1.Spanner",
-            "shortName": "Spanner"
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-          "shortName": "BatchCreateSessions"
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-        "resultType": "google.cloud.spanner_v1.types.BatchCreateSessionsResponse",
-        "shortName": "batch_create_sessions"
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-      "description": "Sample for BatchCreateSessions",
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-        "resultType": "google.cloud.spanner_v1.types.BatchCreateSessionsResponse",
-        "shortName": "batch_create_sessions"
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-      "description": "Sample for BatchCreateSessions",
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-      ],
-      "title": "spanner_v1_generated_spanner_streaming_read_sync.py"
-    }
-  ]
-}
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_add_split_points_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_add_split_points_async.py
deleted file mode 100644
index ff6fcfe598..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_add_split_points_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for AddSplitPoints
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_AddSplitPoints_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_add_split_points():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.AddSplitPointsRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    response = await client.add_split_points(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_AddSplitPoints_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_add_split_points_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_add_split_points_sync.py
deleted file mode 100644
index 3819bbe986..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_add_split_points_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for AddSplitPoints
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_AddSplitPoints_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_add_split_points():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.AddSplitPointsRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    response = client.add_split_points(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_AddSplitPoints_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_copy_backup_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_copy_backup_async.py
deleted file mode 100644
index d885947bb5..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_copy_backup_async.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CopyBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CopyBackup_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_copy_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CopyBackupRequest(
-        parent="parent_value",
-        backup_id="backup_id_value",
-        source_backup="source_backup_value",
-    )
-
-    # Make the request
-    operation = client.copy_backup(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CopyBackup_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_copy_backup_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_copy_backup_sync.py
deleted file mode 100644
index a571e058c9..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_copy_backup_sync.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CopyBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CopyBackup_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_copy_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CopyBackupRequest(
-        parent="parent_value",
-        backup_id="backup_id_value",
-        source_backup="source_backup_value",
-    )
-
-    # Make the request
-    operation = client.copy_backup(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CopyBackup_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_async.py
deleted file mode 100644
index 2ad8881f54..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_async.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CreateBackup_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_create_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CreateBackupRequest(
-        parent="parent_value",
-        backup_id="backup_id_value",
-    )
-
-    # Make the request
-    operation = client.create_backup(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CreateBackup_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_schedule_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_schedule_async.py
deleted file mode 100644
index efdcc2457e..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_schedule_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CreateBackupSchedule_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_create_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CreateBackupScheduleRequest(
-        parent="parent_value",
-        backup_schedule_id="backup_schedule_id_value",
-    )
-
-    # Make the request
-    response = await client.create_backup_schedule(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CreateBackupSchedule_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_schedule_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_schedule_sync.py
deleted file mode 100644
index 60d4b50c3b..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_schedule_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CreateBackupSchedule_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_create_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CreateBackupScheduleRequest(
-        parent="parent_value",
-        backup_schedule_id="backup_schedule_id_value",
-    )
-
-    # Make the request
-    response = client.create_backup_schedule(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CreateBackupSchedule_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_sync.py
deleted file mode 100644
index 02b9d1f0e7..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_create_backup_sync.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CreateBackup_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_create_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CreateBackupRequest(
-        parent="parent_value",
-        backup_id="backup_id_value",
-    )
-
-    # Make the request
-    operation = client.create_backup(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CreateBackup_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_create_database_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_create_database_async.py
deleted file mode 100644
index 47399a8d40..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_create_database_async.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CreateDatabase_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_create_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CreateDatabaseRequest(
-        parent="parent_value",
-        create_statement="create_statement_value",
-    )
-
-    # Make the request
-    operation = client.create_database(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CreateDatabase_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_create_database_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_create_database_sync.py
deleted file mode 100644
index 6f112cd8a7..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_create_database_sync.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_CreateDatabase_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_create_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.CreateDatabaseRequest(
-        parent="parent_value",
-        create_statement="create_statement_value",
-    )
-
-    # Make the request
-    operation = client.create_database(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_CreateDatabase_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_async.py
deleted file mode 100644
index ab10785105..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_async.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_DeleteBackup_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_delete_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.DeleteBackupRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    await client.delete_backup(request=request)
-
-
-# [END spanner_v1_generated_DatabaseAdmin_DeleteBackup_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_schedule_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_schedule_async.py
deleted file mode 100644
index 591d45cb10..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_schedule_async.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_DeleteBackupSchedule_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_delete_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.DeleteBackupScheduleRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    await client.delete_backup_schedule(request=request)
-
-
-# [END spanner_v1_generated_DatabaseAdmin_DeleteBackupSchedule_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_schedule_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_schedule_sync.py
deleted file mode 100644
index 720417ba65..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_schedule_sync.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_DeleteBackupSchedule_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_delete_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.DeleteBackupScheduleRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    client.delete_backup_schedule(request=request)
-
-
-# [END spanner_v1_generated_DatabaseAdmin_DeleteBackupSchedule_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_sync.py
deleted file mode 100644
index 736dc56a23..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_delete_backup_sync.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_DeleteBackup_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_delete_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.DeleteBackupRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    client.delete_backup(request=request)
-
-
-# [END spanner_v1_generated_DatabaseAdmin_DeleteBackup_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_drop_database_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_drop_database_async.py
deleted file mode 100644
index 15f279b72d..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_drop_database_async.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DropDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_DropDatabase_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_drop_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.DropDatabaseRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    await client.drop_database(request=request)
-
-
-# [END spanner_v1_generated_DatabaseAdmin_DropDatabase_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_drop_database_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_drop_database_sync.py
deleted file mode 100644
index f218cabd83..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_drop_database_sync.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DropDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_DropDatabase_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_drop_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.DropDatabaseRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    client.drop_database(request=request)
-
-
-# [END spanner_v1_generated_DatabaseAdmin_DropDatabase_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_async.py
deleted file mode 100644
index 58b93a119a..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetBackup_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_get_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetBackupRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = await client.get_backup(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetBackup_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_schedule_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_schedule_async.py
deleted file mode 100644
index 5a37eec975..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_schedule_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetBackupSchedule_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_get_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetBackupScheduleRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = await client.get_backup_schedule(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetBackupSchedule_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_schedule_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_schedule_sync.py
deleted file mode 100644
index 4006cac333..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_schedule_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetBackupSchedule_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_get_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetBackupScheduleRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = client.get_backup_schedule(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetBackupSchedule_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_sync.py
deleted file mode 100644
index 16cffcd78d..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_backup_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetBackup_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_get_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetBackupRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = client.get_backup(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetBackup_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_database_async.py
deleted file mode 100644
index fd8621c27b..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetDatabase_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_get_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetDatabaseRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = await client.get_database(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetDatabase_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_ddl_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_database_ddl_async.py
deleted file mode 100644
index 8e84b21f78..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_ddl_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetDatabaseDdl
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetDatabaseDdl_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_get_database_ddl():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetDatabaseDdlRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    response = await client.get_database_ddl(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetDatabaseDdl_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_ddl_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_database_ddl_sync.py
deleted file mode 100644
index 495b557a55..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_ddl_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetDatabaseDdl
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetDatabaseDdl_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_get_database_ddl():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetDatabaseDdlRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    response = client.get_database_ddl(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetDatabaseDdl_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_database_sync.py
deleted file mode 100644
index ab729bb9e3..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_database_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetDatabase_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_get_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.GetDatabaseRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = client.get_database(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetDatabase_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_iam_policy_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_iam_policy_async.py
deleted file mode 100644
index d5d75de78b..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_iam_policy_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetIamPolicy_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-async def sample_get_iam_policy():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.GetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = await client.get_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetIamPolicy_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_get_iam_policy_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_get_iam_policy_sync.py
deleted file mode 100644
index 75e0b48b1b..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_get_iam_policy_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_GetIamPolicy_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-def sample_get_iam_policy():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.GetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = client.get_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_GetIamPolicy_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_internal_update_graph_operation_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_internal_update_graph_operation_async.py
deleted file mode 100644
index 556205a0aa..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_internal_update_graph_operation_async.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for InternalUpdateGraphOperation
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_InternalUpdateGraphOperation_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_internal_update_graph_operation():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.InternalUpdateGraphOperationRequest(
-        database="database_value",
-        operation_id="operation_id_value",
-        vm_identity_token="vm_identity_token_value",
-    )
-
-    # Make the request
-    response = await client.internal_update_graph_operation(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_InternalUpdateGraphOperation_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_internal_update_graph_operation_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_internal_update_graph_operation_sync.py
deleted file mode 100644
index 46f1a3c88f..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_internal_update_graph_operation_sync.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for InternalUpdateGraphOperation
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_InternalUpdateGraphOperation_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_internal_update_graph_operation():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.InternalUpdateGraphOperationRequest(
-        database="database_value",
-        operation_id="operation_id_value",
-        vm_identity_token="vm_identity_token_value",
-    )
-
-    # Make the request
-    response = client.internal_update_graph_operation(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_InternalUpdateGraphOperation_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_operations_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_operations_async.py
deleted file mode 100644
index a56ec9f80e..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_operations_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListBackupOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListBackupOperations_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_list_backup_operations():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListBackupOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_backup_operations(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListBackupOperations_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_operations_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_operations_sync.py
deleted file mode 100644
index 6383e1b247..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_operations_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListBackupOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListBackupOperations_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_list_backup_operations():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListBackupOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_backup_operations(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListBackupOperations_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_schedules_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_schedules_async.py
deleted file mode 100644
index 25ac53891a..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_schedules_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListBackupSchedules
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListBackupSchedules_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_list_backup_schedules():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListBackupSchedulesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_backup_schedules(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListBackupSchedules_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_schedules_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_schedules_sync.py
deleted file mode 100644
index 89cf82d278..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_backup_schedules_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListBackupSchedules
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListBackupSchedules_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_list_backup_schedules():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListBackupSchedulesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_backup_schedules(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListBackupSchedules_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_backups_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_backups_async.py
deleted file mode 100644
index 140e519e07..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_backups_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListBackups
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListBackups_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_list_backups():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListBackupsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_backups(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListBackups_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_backups_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_backups_sync.py
deleted file mode 100644
index 9f04036f74..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_backups_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListBackups
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListBackups_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_list_backups():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListBackupsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_backups(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListBackups_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_operations_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_database_operations_async.py
deleted file mode 100644
index 3bc614b232..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_operations_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListDatabaseOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListDatabaseOperations_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_list_database_operations():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListDatabaseOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_database_operations(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListDatabaseOperations_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_operations_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_database_operations_sync.py
deleted file mode 100644
index 3d4dc965a9..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_operations_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListDatabaseOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListDatabaseOperations_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_list_database_operations():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListDatabaseOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_database_operations(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListDatabaseOperations_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_roles_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_database_roles_async.py
deleted file mode 100644
index 46ec91ce89..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_roles_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListDatabaseRoles
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListDatabaseRoles_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_list_database_roles():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListDatabaseRolesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_database_roles(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListDatabaseRoles_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_roles_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_database_roles_sync.py
deleted file mode 100644
index d39e4759dd..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_database_roles_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListDatabaseRoles
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListDatabaseRoles_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_list_database_roles():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListDatabaseRolesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_database_roles(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListDatabaseRoles_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_databases_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_databases_async.py
deleted file mode 100644
index 586dfa56f1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_databases_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListDatabases
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListDatabases_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_list_databases():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListDatabasesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_databases(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListDatabases_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_list_databases_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_list_databases_sync.py
deleted file mode 100644
index e6ef221af6..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_list_databases_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListDatabases
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_ListDatabases_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_list_databases():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.ListDatabasesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_databases(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_ListDatabases_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_restore_database_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_restore_database_async.py
deleted file mode 100644
index 384c063c61..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_restore_database_async.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for RestoreDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_RestoreDatabase_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_restore_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.RestoreDatabaseRequest(
-        backup="backup_value",
-        parent="parent_value",
-        database_id="database_id_value",
-    )
-
-    # Make the request
-    operation = client.restore_database(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_RestoreDatabase_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_restore_database_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_restore_database_sync.py
deleted file mode 100644
index a327a8ae13..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_restore_database_sync.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for RestoreDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_RestoreDatabase_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_restore_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.RestoreDatabaseRequest(
-        backup="backup_value",
-        parent="parent_value",
-        database_id="database_id_value",
-    )
-
-    # Make the request
-    operation = client.restore_database(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_RestoreDatabase_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_set_iam_policy_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_set_iam_policy_async.py
deleted file mode 100644
index edade4c950..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_set_iam_policy_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for SetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_SetIamPolicy_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-async def sample_set_iam_policy():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.SetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = await client.set_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_SetIamPolicy_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_set_iam_policy_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_set_iam_policy_sync.py
deleted file mode 100644
index 28a6746f4a..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_set_iam_policy_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for SetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_SetIamPolicy_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-def sample_set_iam_policy():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.SetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = client.set_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_SetIamPolicy_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_test_iam_permissions_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_test_iam_permissions_async.py
deleted file mode 100644
index 0e6ea91cb3..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_test_iam_permissions_async.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for TestIamPermissions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_TestIamPermissions_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-async def sample_test_iam_permissions():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.TestIamPermissionsRequest(
-        resource="resource_value",
-        permissions=['permissions_value1', 'permissions_value2'],
-    )
-
-    # Make the request
-    response = await client.test_iam_permissions(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_TestIamPermissions_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_test_iam_permissions_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_test_iam_permissions_sync.py
deleted file mode 100644
index 3fd0316dc1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_test_iam_permissions_sync.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for TestIamPermissions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_TestIamPermissions_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-def sample_test_iam_permissions():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.TestIamPermissionsRequest(
-        resource="resource_value",
-        permissions=['permissions_value1', 'permissions_value2'],
-    )
-
-    # Make the request
-    response = client.test_iam_permissions(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_TestIamPermissions_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_async.py
deleted file mode 100644
index 95fa2a63f6..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_async.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateBackup_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_update_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.UpdateBackupRequest(
-    )
-
-    # Make the request
-    response = await client.update_backup(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateBackup_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_schedule_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_schedule_async.py
deleted file mode 100644
index de17dfc86e..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_schedule_async.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateBackupSchedule_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_update_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.UpdateBackupScheduleRequest(
-    )
-
-    # Make the request
-    response = await client.update_backup_schedule(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateBackupSchedule_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_schedule_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_schedule_sync.py
deleted file mode 100644
index 4ef64a0673..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_schedule_sync.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateBackupSchedule
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateBackupSchedule_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_update_backup_schedule():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.UpdateBackupScheduleRequest(
-    )
-
-    # Make the request
-    response = client.update_backup_schedule(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateBackupSchedule_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_sync.py
deleted file mode 100644
index 9dbb0148dc..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_backup_sync.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateBackup
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateBackup_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_update_backup():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.UpdateBackupRequest(
-    )
-
-    # Make the request
-    response = client.update_backup(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateBackup_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_database_async.py
deleted file mode 100644
index d5588c3036..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_async.py
+++ /dev/null
@@ -1,59 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateDatabase_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_update_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    database = spanner_admin_database_v1.Database()
-    database.name = "name_value"
-
-    request = spanner_admin_database_v1.UpdateDatabaseRequest(
-        database=database,
-    )
-
-    # Make the request
-    operation = client.update_database(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateDatabase_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_ddl_async.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_database_ddl_async.py
deleted file mode 100644
index ad98e2da9c..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_ddl_async.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateDatabaseDdl
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateDatabaseDdl_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-async def sample_update_database_ddl():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.UpdateDatabaseDdlRequest(
-        database="database_value",
-        statements=['statements_value1', 'statements_value2'],
-    )
-
-    # Make the request
-    operation = client.update_database_ddl(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateDatabaseDdl_async]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_ddl_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_database_ddl_sync.py
deleted file mode 100644
index 73297524b9..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_ddl_sync.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateDatabaseDdl
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateDatabaseDdl_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_update_database_ddl():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_database_v1.UpdateDatabaseDdlRequest(
-        database="database_value",
-        statements=['statements_value1', 'statements_value2'],
-    )
-
-    # Make the request
-    operation = client.update_database_ddl(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateDatabaseDdl_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_sync.py b/samples/generated_samples/spanner_v1_generated_database_admin_update_database_sync.py
deleted file mode 100644
index 62ed40bc84..0000000000
--- a/samples/generated_samples/spanner_v1_generated_database_admin_update_database_sync.py
+++ /dev/null
@@ -1,59 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateDatabase
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-database
-
-
-# [START spanner_v1_generated_DatabaseAdmin_UpdateDatabase_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_database_v1
-
-
-def sample_update_database():
-    # Create a client
-    client = spanner_admin_database_v1.DatabaseAdminClient()
-
-    # Initialize request argument(s)
-    database = spanner_admin_database_v1.Database()
-    database.name = "name_value"
-
-    request = spanner_admin_database_v1.UpdateDatabaseRequest(
-        database=database,
-    )
-
-    # Make the request
-    operation = client.update_database(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_DatabaseAdmin_UpdateDatabase_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_async.py
deleted file mode 100644
index 74bd640044..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_async.py
+++ /dev/null
@@ -1,63 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_CreateInstance_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_create_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    instance = spanner_admin_instance_v1.Instance()
-    instance.name = "name_value"
-    instance.config = "config_value"
-    instance.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.CreateInstanceRequest(
-        parent="parent_value",
-        instance_id="instance_id_value",
-        instance=instance,
-    )
-
-    # Make the request
-    operation = client.create_instance(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_CreateInstance_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_config_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_config_async.py
deleted file mode 100644
index c3f266e4c4..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_config_async.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_CreateInstanceConfig_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_create_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.CreateInstanceConfigRequest(
-        parent="parent_value",
-        instance_config_id="instance_config_id_value",
-    )
-
-    # Make the request
-    operation = client.create_instance_config(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_CreateInstanceConfig_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_config_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_config_sync.py
deleted file mode 100644
index c5b7616534..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_config_sync.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_CreateInstanceConfig_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_create_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.CreateInstanceConfigRequest(
-        parent="parent_value",
-        instance_config_id="instance_config_id_value",
-    )
-
-    # Make the request
-    operation = client.create_instance_config(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_CreateInstanceConfig_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_partition_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_partition_async.py
deleted file mode 100644
index a22765f53f..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_partition_async.py
+++ /dev/null
@@ -1,64 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_CreateInstancePartition_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_create_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    instance_partition = spanner_admin_instance_v1.InstancePartition()
-    instance_partition.node_count = 1070
-    instance_partition.name = "name_value"
-    instance_partition.config = "config_value"
-    instance_partition.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.CreateInstancePartitionRequest(
-        parent="parent_value",
-        instance_partition_id="instance_partition_id_value",
-        instance_partition=instance_partition,
-    )
-
-    # Make the request
-    operation = client.create_instance_partition(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_CreateInstancePartition_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_partition_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_partition_sync.py
deleted file mode 100644
index 5b5f2e0e26..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_partition_sync.py
+++ /dev/null
@@ -1,64 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_CreateInstancePartition_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_create_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    instance_partition = spanner_admin_instance_v1.InstancePartition()
-    instance_partition.node_count = 1070
-    instance_partition.name = "name_value"
-    instance_partition.config = "config_value"
-    instance_partition.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.CreateInstancePartitionRequest(
-        parent="parent_value",
-        instance_partition_id="instance_partition_id_value",
-        instance_partition=instance_partition,
-    )
-
-    # Make the request
-    operation = client.create_instance_partition(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_CreateInstancePartition_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_sync.py
deleted file mode 100644
index f43c5016b5..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_create_instance_sync.py
+++ /dev/null
@@ -1,63 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_CreateInstance_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_create_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    instance = spanner_admin_instance_v1.Instance()
-    instance.name = "name_value"
-    instance.config = "config_value"
-    instance.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.CreateInstanceRequest(
-        parent="parent_value",
-        instance_id="instance_id_value",
-        instance=instance,
-    )
-
-    # Make the request
-    operation = client.create_instance(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_CreateInstance_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_async.py
deleted file mode 100644
index 262da709aa..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_async.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_DeleteInstance_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_delete_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.DeleteInstanceRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    await client.delete_instance(request=request)
-
-
-# [END spanner_v1_generated_InstanceAdmin_DeleteInstance_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_config_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_config_async.py
deleted file mode 100644
index df83d9e424..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_config_async.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_DeleteInstanceConfig_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_delete_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.DeleteInstanceConfigRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    await client.delete_instance_config(request=request)
-
-
-# [END spanner_v1_generated_InstanceAdmin_DeleteInstanceConfig_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_config_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_config_sync.py
deleted file mode 100644
index 9a9c4d7ca1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_config_sync.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_DeleteInstanceConfig_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_delete_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.DeleteInstanceConfigRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    client.delete_instance_config(request=request)
-
-
-# [END spanner_v1_generated_InstanceAdmin_DeleteInstanceConfig_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_partition_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_partition_async.py
deleted file mode 100644
index 78ca44d6c2..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_partition_async.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_DeleteInstancePartition_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_delete_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.DeleteInstancePartitionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    await client.delete_instance_partition(request=request)
-
-
-# [END spanner_v1_generated_InstanceAdmin_DeleteInstancePartition_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_partition_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_partition_sync.py
deleted file mode 100644
index 72249ef6c7..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_partition_sync.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_DeleteInstancePartition_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_delete_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.DeleteInstancePartitionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    client.delete_instance_partition(request=request)
-
-
-# [END spanner_v1_generated_InstanceAdmin_DeleteInstancePartition_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_sync.py
deleted file mode 100644
index 613ac6c070..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_delete_instance_sync.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_DeleteInstance_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_delete_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.DeleteInstanceRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    client.delete_instance(request=request)
-
-
-# [END spanner_v1_generated_InstanceAdmin_DeleteInstance_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_iam_policy_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_iam_policy_async.py
deleted file mode 100644
index a0b620ae4f..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_iam_policy_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetIamPolicy_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-async def sample_get_iam_policy():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.GetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = await client.get_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetIamPolicy_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_iam_policy_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_iam_policy_sync.py
deleted file mode 100644
index cc0d725a03..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_iam_policy_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetIamPolicy_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-def sample_get_iam_policy():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.GetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = client.get_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetIamPolicy_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_async.py
deleted file mode 100644
index 059eb2a078..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetInstance_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_get_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.GetInstanceRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = await client.get_instance(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetInstance_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_config_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_config_async.py
deleted file mode 100644
index 9adfb51c2e..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_config_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetInstanceConfig_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_get_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.GetInstanceConfigRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = await client.get_instance_config(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetInstanceConfig_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_config_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_config_sync.py
deleted file mode 100644
index 16e9d3c3c8..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_config_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetInstanceConfig_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_get_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.GetInstanceConfigRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = client.get_instance_config(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetInstanceConfig_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_partition_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_partition_async.py
deleted file mode 100644
index 8e84abcf6e..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_partition_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetInstancePartition_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_get_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.GetInstancePartitionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = await client.get_instance_partition(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetInstancePartition_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_partition_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_partition_sync.py
deleted file mode 100644
index d617cbb382..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_partition_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetInstancePartition_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_get_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.GetInstancePartitionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = client.get_instance_partition(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetInstancePartition_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_sync.py
deleted file mode 100644
index 4a246a5bf3..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_get_instance_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_GetInstance_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_get_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.GetInstanceRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = client.get_instance(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_GetInstance_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_config_operations_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_config_operations_async.py
deleted file mode 100644
index a0580fef7c..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_config_operations_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstanceConfigOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstanceConfigOperations_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_list_instance_config_operations():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstanceConfigOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_config_operations(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstanceConfigOperations_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_config_operations_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_config_operations_sync.py
deleted file mode 100644
index 89213b3a2e..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_config_operations_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstanceConfigOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstanceConfigOperations_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_list_instance_config_operations():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstanceConfigOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_config_operations(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstanceConfigOperations_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_configs_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_configs_async.py
deleted file mode 100644
index 651b2f88ae..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_configs_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstanceConfigs
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstanceConfigs_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_list_instance_configs():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstanceConfigsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_configs(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstanceConfigs_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_configs_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_configs_sync.py
deleted file mode 100644
index a0f120277a..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_configs_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstanceConfigs
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstanceConfigs_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_list_instance_configs():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstanceConfigsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_configs(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstanceConfigs_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partition_operations_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partition_operations_async.py
deleted file mode 100644
index 9dedb973f1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partition_operations_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstancePartitionOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstancePartitionOperations_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_list_instance_partition_operations():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstancePartitionOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_partition_operations(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstancePartitionOperations_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partition_operations_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partition_operations_sync.py
deleted file mode 100644
index b2a7549b29..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partition_operations_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstancePartitionOperations
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstancePartitionOperations_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_list_instance_partition_operations():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstancePartitionOperationsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_partition_operations(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstancePartitionOperations_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partitions_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partitions_async.py
deleted file mode 100644
index 56adc152fe..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partitions_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstancePartitions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstancePartitions_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_list_instance_partitions():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstancePartitionsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_partitions(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstancePartitions_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partitions_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partitions_sync.py
deleted file mode 100644
index 1e65552fc1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instance_partitions_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstancePartitions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstancePartitions_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_list_instance_partitions():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstancePartitionsRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instance_partitions(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstancePartitions_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instances_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instances_async.py
deleted file mode 100644
index abe1a1affa..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instances_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstances
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstances_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_list_instances():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstancesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instances(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstances_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instances_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_list_instances_sync.py
deleted file mode 100644
index f344baff11..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_list_instances_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListInstances
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_ListInstances_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_list_instances():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.ListInstancesRequest(
-        parent="parent_value",
-    )
-
-    # Make the request
-    page_result = client.list_instances(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_ListInstances_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_move_instance_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_move_instance_async.py
deleted file mode 100644
index ce62120492..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_move_instance_async.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for MoveInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_MoveInstance_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_move_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.MoveInstanceRequest(
-        name="name_value",
-        target_config="target_config_value",
-    )
-
-    # Make the request
-    operation = client.move_instance(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_MoveInstance_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_move_instance_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_move_instance_sync.py
deleted file mode 100644
index 4621200e0c..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_move_instance_sync.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for MoveInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_MoveInstance_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_move_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.MoveInstanceRequest(
-        name="name_value",
-        target_config="target_config_value",
-    )
-
-    # Make the request
-    operation = client.move_instance(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_MoveInstance_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_set_iam_policy_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_set_iam_policy_async.py
deleted file mode 100644
index 2443f2127d..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_set_iam_policy_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for SetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_SetIamPolicy_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-async def sample_set_iam_policy():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.SetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = await client.set_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_SetIamPolicy_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_set_iam_policy_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_set_iam_policy_sync.py
deleted file mode 100644
index ba6401602f..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_set_iam_policy_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for SetIamPolicy
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_SetIamPolicy_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-def sample_set_iam_policy():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.SetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Make the request
-    response = client.set_iam_policy(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_SetIamPolicy_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_test_iam_permissions_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_test_iam_permissions_async.py
deleted file mode 100644
index aa0e05dde3..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_test_iam_permissions_async.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for TestIamPermissions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_TestIamPermissions_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-async def sample_test_iam_permissions():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.TestIamPermissionsRequest(
-        resource="resource_value",
-        permissions=['permissions_value1', 'permissions_value2'],
-    )
-
-    # Make the request
-    response = await client.test_iam_permissions(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_TestIamPermissions_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_test_iam_permissions_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_test_iam_permissions_sync.py
deleted file mode 100644
index 80b2a4dd21..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_test_iam_permissions_sync.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for TestIamPermissions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_TestIamPermissions_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-
-
-def sample_test_iam_permissions():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = iam_policy_pb2.TestIamPermissionsRequest(
-        resource="resource_value",
-        permissions=['permissions_value1', 'permissions_value2'],
-    )
-
-    # Make the request
-    response = client.test_iam_permissions(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_TestIamPermissions_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_async.py
deleted file mode 100644
index ecabbf5191..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_async.py
+++ /dev/null
@@ -1,61 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_UpdateInstance_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_update_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    instance = spanner_admin_instance_v1.Instance()
-    instance.name = "name_value"
-    instance.config = "config_value"
-    instance.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.UpdateInstanceRequest(
-        instance=instance,
-    )
-
-    # Make the request
-    operation = client.update_instance(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_UpdateInstance_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_config_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_config_async.py
deleted file mode 100644
index f7ea78401c..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_config_async.py
+++ /dev/null
@@ -1,55 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_UpdateInstanceConfig_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_update_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.UpdateInstanceConfigRequest(
-    )
-
-    # Make the request
-    operation = client.update_instance_config(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_UpdateInstanceConfig_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_config_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_config_sync.py
deleted file mode 100644
index 1d184f6c58..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_config_sync.py
+++ /dev/null
@@ -1,55 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateInstanceConfig
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_UpdateInstanceConfig_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_update_instance_config():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    request = spanner_admin_instance_v1.UpdateInstanceConfigRequest(
-    )
-
-    # Make the request
-    operation = client.update_instance_config(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_UpdateInstanceConfig_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_partition_async.py b/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_partition_async.py
deleted file mode 100644
index 42d3c484f8..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_partition_async.py
+++ /dev/null
@@ -1,62 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_UpdateInstancePartition_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-async def sample_update_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminAsyncClient()
-
-    # Initialize request argument(s)
-    instance_partition = spanner_admin_instance_v1.InstancePartition()
-    instance_partition.node_count = 1070
-    instance_partition.name = "name_value"
-    instance_partition.config = "config_value"
-    instance_partition.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.UpdateInstancePartitionRequest(
-        instance_partition=instance_partition,
-    )
-
-    # Make the request
-    operation = client.update_instance_partition(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = (await operation).result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_UpdateInstancePartition_async]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_partition_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_partition_sync.py
deleted file mode 100644
index 56cd2760a1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_partition_sync.py
+++ /dev/null
@@ -1,62 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateInstancePartition
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_UpdateInstancePartition_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_update_instance_partition():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    instance_partition = spanner_admin_instance_v1.InstancePartition()
-    instance_partition.node_count = 1070
-    instance_partition.name = "name_value"
-    instance_partition.config = "config_value"
-    instance_partition.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.UpdateInstancePartitionRequest(
-        instance_partition=instance_partition,
-    )
-
-    # Make the request
-    operation = client.update_instance_partition(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_UpdateInstancePartition_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_sync.py b/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_sync.py
deleted file mode 100644
index 2340e701e1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_instance_admin_update_instance_sync.py
+++ /dev/null
@@ -1,61 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for UpdateInstance
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner-admin-instance
-
-
-# [START spanner_v1_generated_InstanceAdmin_UpdateInstance_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_admin_instance_v1
-
-
-def sample_update_instance():
-    # Create a client
-    client = spanner_admin_instance_v1.InstanceAdminClient()
-
-    # Initialize request argument(s)
-    instance = spanner_admin_instance_v1.Instance()
-    instance.name = "name_value"
-    instance.config = "config_value"
-    instance.display_name = "display_name_value"
-
-    request = spanner_admin_instance_v1.UpdateInstanceRequest(
-        instance=instance,
-    )
-
-    # Make the request
-    operation = client.update_instance(request=request)
-
-    print("Waiting for operation to complete...")
-
-    response = operation.result()
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_InstanceAdmin_UpdateInstance_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_batch_create_sessions_async.py b/samples/generated_samples/spanner_v1_generated_spanner_batch_create_sessions_async.py
deleted file mode 100644
index 49e64b4ab8..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_batch_create_sessions_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for BatchCreateSessions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_BatchCreateSessions_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_batch_create_sessions():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.BatchCreateSessionsRequest(
-        database="database_value",
-        session_count=1420,
-    )
-
-    # Make the request
-    response = await client.batch_create_sessions(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_BatchCreateSessions_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_batch_create_sessions_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_batch_create_sessions_sync.py
deleted file mode 100644
index ade1da3661..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_batch_create_sessions_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for BatchCreateSessions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_BatchCreateSessions_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_batch_create_sessions():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.BatchCreateSessionsRequest(
-        database="database_value",
-        session_count=1420,
-    )
-
-    # Make the request
-    response = client.batch_create_sessions(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_BatchCreateSessions_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_batch_write_async.py b/samples/generated_samples/spanner_v1_generated_spanner_batch_write_async.py
deleted file mode 100644
index d1565657e8..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_batch_write_async.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for BatchWrite
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_BatchWrite_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_batch_write():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    mutation_groups = spanner_v1.MutationGroup()
-    mutation_groups.mutations.insert.table = "table_value"
-
-    request = spanner_v1.BatchWriteRequest(
-        session="session_value",
-        mutation_groups=mutation_groups,
-    )
-
-    # Make the request
-    stream = await client.batch_write(request=request)
-
-    # Handle the response
-    async for response in stream:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_BatchWrite_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_batch_write_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_batch_write_sync.py
deleted file mode 100644
index 9b6621def9..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_batch_write_sync.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for BatchWrite
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_BatchWrite_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_batch_write():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    mutation_groups = spanner_v1.MutationGroup()
-    mutation_groups.mutations.insert.table = "table_value"
-
-    request = spanner_v1.BatchWriteRequest(
-        session="session_value",
-        mutation_groups=mutation_groups,
-    )
-
-    # Make the request
-    stream = client.batch_write(request=request)
-
-    # Handle the response
-    for response in stream:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_BatchWrite_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_begin_transaction_async.py b/samples/generated_samples/spanner_v1_generated_spanner_begin_transaction_async.py
deleted file mode 100644
index efdd161715..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_begin_transaction_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for BeginTransaction
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_BeginTransaction_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_begin_transaction():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.BeginTransactionRequest(
-        session="session_value",
-    )
-
-    # Make the request
-    response = await client.begin_transaction(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_BeginTransaction_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_begin_transaction_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_begin_transaction_sync.py
deleted file mode 100644
index 764dab8aa2..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_begin_transaction_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for BeginTransaction
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_BeginTransaction_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_begin_transaction():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.BeginTransactionRequest(
-        session="session_value",
-    )
-
-    # Make the request
-    response = client.begin_transaction(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_BeginTransaction_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_commit_async.py b/samples/generated_samples/spanner_v1_generated_spanner_commit_async.py
deleted file mode 100644
index f61c297d38..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_commit_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for Commit
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_Commit_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_commit():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.CommitRequest(
-        transaction_id=b'transaction_id_blob',
-        session="session_value",
-    )
-
-    # Make the request
-    response = await client.commit(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_Commit_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_commit_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_commit_sync.py
deleted file mode 100644
index a945bd2234..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_commit_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for Commit
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_Commit_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_commit():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.CommitRequest(
-        transaction_id=b'transaction_id_blob',
-        session="session_value",
-    )
-
-    # Make the request
-    response = client.commit(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_Commit_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_create_session_async.py b/samples/generated_samples/spanner_v1_generated_spanner_create_session_async.py
deleted file mode 100644
index 8cddc00c66..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_create_session_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateSession
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_CreateSession_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_create_session():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.CreateSessionRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    response = await client.create_session(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_CreateSession_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_create_session_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_create_session_sync.py
deleted file mode 100644
index b9de2d34e0..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_create_session_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for CreateSession
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_CreateSession_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_create_session():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.CreateSessionRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    response = client.create_session(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_CreateSession_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_delete_session_async.py b/samples/generated_samples/spanner_v1_generated_spanner_delete_session_async.py
deleted file mode 100644
index 9fed1ddca6..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_delete_session_async.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteSession
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_DeleteSession_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_delete_session():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.DeleteSessionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    await client.delete_session(request=request)
-
-
-# [END spanner_v1_generated_Spanner_DeleteSession_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_delete_session_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_delete_session_sync.py
deleted file mode 100644
index 1f2a17e2d1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_delete_session_sync.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for DeleteSession
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_DeleteSession_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_delete_session():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.DeleteSessionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    client.delete_session(request=request)
-
-
-# [END spanner_v1_generated_Spanner_DeleteSession_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_execute_batch_dml_async.py b/samples/generated_samples/spanner_v1_generated_spanner_execute_batch_dml_async.py
deleted file mode 100644
index 8313fd66a0..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_execute_batch_dml_async.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ExecuteBatchDml
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ExecuteBatchDml_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_execute_batch_dml():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    statements = spanner_v1.Statement()
-    statements.sql = "sql_value"
-
-    request = spanner_v1.ExecuteBatchDmlRequest(
-        session="session_value",
-        statements=statements,
-        seqno=550,
-    )
-
-    # Make the request
-    response = await client.execute_batch_dml(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_ExecuteBatchDml_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_execute_batch_dml_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_execute_batch_dml_sync.py
deleted file mode 100644
index dd4696b6b2..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_execute_batch_dml_sync.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ExecuteBatchDml
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ExecuteBatchDml_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_execute_batch_dml():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    statements = spanner_v1.Statement()
-    statements.sql = "sql_value"
-
-    request = spanner_v1.ExecuteBatchDmlRequest(
-        session="session_value",
-        statements=statements,
-        seqno=550,
-    )
-
-    # Make the request
-    response = client.execute_batch_dml(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_ExecuteBatchDml_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_execute_sql_async.py b/samples/generated_samples/spanner_v1_generated_spanner_execute_sql_async.py
deleted file mode 100644
index a12b20f3e9..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_execute_sql_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ExecuteSql
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ExecuteSql_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_execute_sql():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ExecuteSqlRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Make the request
-    response = await client.execute_sql(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_ExecuteSql_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_execute_sql_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_execute_sql_sync.py
deleted file mode 100644
index 761d0ca251..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_execute_sql_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ExecuteSql
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ExecuteSql_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_execute_sql():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ExecuteSqlRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Make the request
-    response = client.execute_sql(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_ExecuteSql_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_execute_streaming_sql_async.py b/samples/generated_samples/spanner_v1_generated_spanner_execute_streaming_sql_async.py
deleted file mode 100644
index 86b8eb910e..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_execute_streaming_sql_async.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ExecuteStreamingSql
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ExecuteStreamingSql_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_execute_streaming_sql():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ExecuteSqlRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Make the request
-    stream = await client.execute_streaming_sql(request=request)
-
-    # Handle the response
-    async for response in stream:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_ExecuteStreamingSql_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_execute_streaming_sql_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_execute_streaming_sql_sync.py
deleted file mode 100644
index dc7dba43b8..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_execute_streaming_sql_sync.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ExecuteStreamingSql
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ExecuteStreamingSql_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_execute_streaming_sql():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ExecuteSqlRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Make the request
-    stream = client.execute_streaming_sql(request=request)
-
-    # Handle the response
-    for response in stream:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_ExecuteStreamingSql_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_get_session_async.py b/samples/generated_samples/spanner_v1_generated_spanner_get_session_async.py
deleted file mode 100644
index d2e50f9891..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_get_session_async.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetSession
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_GetSession_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_get_session():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.GetSessionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = await client.get_session(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_GetSession_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_get_session_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_get_session_sync.py
deleted file mode 100644
index 36d6436b04..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_get_session_sync.py
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for GetSession
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_GetSession_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_get_session():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.GetSessionRequest(
-        name="name_value",
-    )
-
-    # Make the request
-    response = client.get_session(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_GetSession_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_list_sessions_async.py b/samples/generated_samples/spanner_v1_generated_spanner_list_sessions_async.py
deleted file mode 100644
index 95aa4bf818..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_list_sessions_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListSessions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ListSessions_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_list_sessions():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ListSessionsRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    page_result = client.list_sessions(request=request)
-
-    # Handle the response
-    async for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_ListSessions_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_list_sessions_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_list_sessions_sync.py
deleted file mode 100644
index a9533fed0d..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_list_sessions_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for ListSessions
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_ListSessions_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_list_sessions():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ListSessionsRequest(
-        database="database_value",
-    )
-
-    # Make the request
-    page_result = client.list_sessions(request=request)
-
-    # Handle the response
-    for response in page_result:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_ListSessions_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_partition_query_async.py b/samples/generated_samples/spanner_v1_generated_spanner_partition_query_async.py
deleted file mode 100644
index 200fb2f6a2..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_partition_query_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for PartitionQuery
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_PartitionQuery_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_partition_query():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.PartitionQueryRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Make the request
-    response = await client.partition_query(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_PartitionQuery_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_partition_query_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_partition_query_sync.py
deleted file mode 100644
index d486a3590c..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_partition_query_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for PartitionQuery
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_PartitionQuery_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_partition_query():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.PartitionQueryRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Make the request
-    response = client.partition_query(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_PartitionQuery_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_partition_read_async.py b/samples/generated_samples/spanner_v1_generated_spanner_partition_read_async.py
deleted file mode 100644
index 99055ade8b..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_partition_read_async.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for PartitionRead
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_PartitionRead_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_partition_read():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.PartitionReadRequest(
-        session="session_value",
-        table="table_value",
-    )
-
-    # Make the request
-    response = await client.partition_read(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_PartitionRead_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_partition_read_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_partition_read_sync.py
deleted file mode 100644
index 0ca01ac423..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_partition_read_sync.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for PartitionRead
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_PartitionRead_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_partition_read():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.PartitionReadRequest(
-        session="session_value",
-        table="table_value",
-    )
-
-    # Make the request
-    response = client.partition_read(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_PartitionRead_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_read_async.py b/samples/generated_samples/spanner_v1_generated_spanner_read_async.py
deleted file mode 100644
index e555865245..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_read_async.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for Read
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_Read_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_read():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ReadRequest(
-        session="session_value",
-        table="table_value",
-        columns=['columns_value1', 'columns_value2'],
-    )
-
-    # Make the request
-    response = await client.read(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_Read_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_read_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_read_sync.py
deleted file mode 100644
index 8f9ee621f3..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_read_sync.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for Read
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_Read_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_read():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ReadRequest(
-        session="session_value",
-        table="table_value",
-        columns=['columns_value1', 'columns_value2'],
-    )
-
-    # Make the request
-    response = client.read(request=request)
-
-    # Handle the response
-    print(response)
-
-# [END spanner_v1_generated_Spanner_Read_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_rollback_async.py b/samples/generated_samples/spanner_v1_generated_spanner_rollback_async.py
deleted file mode 100644
index f99a1b8dd8..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_rollback_async.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for Rollback
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_Rollback_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_rollback():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.RollbackRequest(
-        session="session_value",
-        transaction_id=b'transaction_id_blob',
-    )
-
-    # Make the request
-    await client.rollback(request=request)
-
-
-# [END spanner_v1_generated_Spanner_Rollback_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_rollback_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_rollback_sync.py
deleted file mode 100644
index 00b23b21fc..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_rollback_sync.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for Rollback
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_Rollback_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_rollback():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.RollbackRequest(
-        session="session_value",
-        transaction_id=b'transaction_id_blob',
-    )
-
-    # Make the request
-    client.rollback(request=request)
-
-
-# [END spanner_v1_generated_Spanner_Rollback_sync]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_streaming_read_async.py b/samples/generated_samples/spanner_v1_generated_spanner_streaming_read_async.py
deleted file mode 100644
index f79b9a96a1..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_streaming_read_async.py
+++ /dev/null
@@ -1,55 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for StreamingRead
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_StreamingRead_async]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-async def sample_streaming_read():
-    # Create a client
-    client = spanner_v1.SpannerAsyncClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ReadRequest(
-        session="session_value",
-        table="table_value",
-        columns=['columns_value1', 'columns_value2'],
-    )
-
-    # Make the request
-    stream = await client.streaming_read(request=request)
-
-    # Handle the response
-    async for response in stream:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_StreamingRead_async]
diff --git a/samples/generated_samples/spanner_v1_generated_spanner_streaming_read_sync.py b/samples/generated_samples/spanner_v1_generated_spanner_streaming_read_sync.py
deleted file mode 100644
index f81ed34b33..0000000000
--- a/samples/generated_samples/spanner_v1_generated_spanner_streaming_read_sync.py
+++ /dev/null
@@ -1,55 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# Generated code. DO NOT EDIT!
-#
-# Snippet for StreamingRead
-# NOTE: This snippet has been automatically generated for illustrative purposes only.
-# It may require modifications to work in your environment.
-
-# To install the latest published package dependency, execute the following:
-#   python3 -m pip install google-cloud-spanner
-
-
-# [START spanner_v1_generated_Spanner_StreamingRead_sync]
-# This snippet has been automatically generated and should be regarded as a
-# code template only.
-# It will require modifications to work:
-# - It may require correct/in-range values for request initialization.
-# - It may require specifying regional endpoints when creating the service
-#   client as shown in:
-#   https://googleapis.dev/python/google-api-core/latest/client_options.html
-from google.cloud import spanner_v1
-
-
-def sample_streaming_read():
-    # Create a client
-    client = spanner_v1.SpannerClient()
-
-    # Initialize request argument(s)
-    request = spanner_v1.ReadRequest(
-        session="session_value",
-        table="table_value",
-        columns=['columns_value1', 'columns_value2'],
-    )
-
-    # Make the request
-    stream = client.streaming_read(request=request)
-
-    # Handle the response
-    for response in stream:
-        print(response)
-
-# [END spanner_v1_generated_Spanner_StreamingRead_sync]
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 5e46a79e96..0000000000
--- a/setup.py
+++ /dev/null
@@ -1,105 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2022 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# DO NOT EDIT THIS FILE OUTSIDE OF `.librarian/generator-input`
-# The source of truth for this file is `.librarian/generator-input`
-
-import io
-import os
-
-import setuptools  # type: ignore
-
-package_root = os.path.abspath(os.path.dirname(__file__))
-
-name = "google-cloud-spanner"
-
-
-description = "Google Cloud Spanner API client library"
-
-version = {}
-with open(os.path.join(package_root, "google/cloud/spanner_v1/gapic_version.py")) as fp:
-    exec(fp.read(), version)
-version = version["__version__"]
-
-if version[0] == "0":
-    release_status = "Development Status :: 4 - Beta"
-else:
-    release_status = "Development Status :: 5 - Production/Stable"
-
-dependencies = [
-    "google-api-core[grpc] >= 1.34.0, <3.0.0,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*,!=2.8.*,!=2.9.*,!=2.10.*",
-    "google-cloud-core >= 1.4.4, < 3.0.0",
-    "grpc-google-iam-v1 >= 0.12.4, <1.0.0",
-    "proto-plus >= 1.22.0, <2.0.0",
-    "sqlparse >= 0.4.4",
-    "proto-plus >= 1.22.2, <2.0.0; python_version>='3.11'",
-    "protobuf>=3.20.2,<7.0.0,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
-    "grpc-interceptor >= 0.15.4",
-    # Make OpenTelemetry a core dependency
-    "opentelemetry-api >= 1.22.0",
-    "opentelemetry-sdk >= 1.22.0",
-    "opentelemetry-semantic-conventions >= 0.43b0",
-    "opentelemetry-resourcedetector-gcp >= 1.8.0a0",
-    "google-cloud-monitoring >= 2.16.0",
-    "mmh3 >= 4.1.0 ",
-]
-extras = {"libcst": "libcst >= 0.2.5"}
-
-url = "https://github.com/googleapis/python-spanner"
-
-package_root = os.path.abspath(os.path.dirname(__file__))
-
-readme_filename = os.path.join(package_root, "README.rst")
-with io.open(readme_filename, encoding="utf-8") as readme_file:
-    readme = readme_file.read()
-
-packages = [
-    package
-    for package in setuptools.find_namespace_packages()
-    if package.startswith("google")
-]
-
-setuptools.setup(
-    name=name,
-    version=version,
-    description=description,
-    long_description=readme,
-    author="Google LLC",
-    author_email="googleapis-packages@google.com",
-    license="Apache 2.0",
-    url=url,
-    classifiers=[
-        release_status,
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: Apache Software License",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "Programming Language :: Python :: 3.12",
-        "Programming Language :: Python :: 3.14",
-        "Operating System :: OS Independent",
-        "Topic :: Internet",
-    ],
-    platforms="Posix; MacOS X; Windows",
-    packages=packages,
-    install_requires=dependencies,
-    extras_require=extras,
-    python_requires=">=3.9",
-    include_package_data=True,
-    zip_safe=False,
-)
diff --git a/testing/constraints-3.10.txt b/testing/constraints-3.10.txt
deleted file mode 100644
index 93e6826f2a..0000000000
--- a/testing/constraints-3.10.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- coding: utf-8 -*-
-# This constraints file is required for unit tests.
-# List all library dependencies and extras in this file.
-google-api-core
-google-auth
-grpcio
-proto-plus
-protobuf
diff --git a/testing/constraints-3.11.txt b/testing/constraints-3.11.txt
deleted file mode 100644
index 93e6826f2a..0000000000
--- a/testing/constraints-3.11.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- coding: utf-8 -*-
-# This constraints file is required for unit tests.
-# List all library dependencies and extras in this file.
-google-api-core
-google-auth
-grpcio
-proto-plus
-protobuf
diff --git a/testing/constraints-3.12.txt b/testing/constraints-3.12.txt
deleted file mode 100644
index 93e6826f2a..0000000000
--- a/testing/constraints-3.12.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- coding: utf-8 -*-
-# This constraints file is required for unit tests.
-# List all library dependencies and extras in this file.
-google-api-core
-google-auth
-grpcio
-proto-plus
-protobuf
diff --git a/testing/constraints-3.13.txt b/testing/constraints-3.13.txt
deleted file mode 100644
index 1e93c60e50..0000000000
--- a/testing/constraints-3.13.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-# We use the constraints file for the latest Python version
-# (currently this file) to check that the latest
-# major versions of dependencies are supported in setup.py.
-# List all library dependencies and extras in this file.
-# Require the latest major version be installed for each dependency.
-# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
-# Then this file should have google-cloud-foo>=1
-google-api-core>=2
-google-auth>=2
-grpcio>=1
-proto-plus>=1
-protobuf>=6
diff --git a/testing/constraints-3.14.txt b/testing/constraints-3.14.txt
deleted file mode 100644
index 1e93c60e50..0000000000
--- a/testing/constraints-3.14.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-# We use the constraints file for the latest Python version
-# (currently this file) to check that the latest
-# major versions of dependencies are supported in setup.py.
-# List all library dependencies and extras in this file.
-# Require the latest major version be installed for each dependency.
-# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
-# Then this file should have google-cloud-foo>=1
-google-api-core>=2
-google-auth>=2
-grpcio>=1
-proto-plus>=1
-protobuf>=6
diff --git a/testing/constraints-3.8.txt b/testing/constraints-3.8.txt
deleted file mode 100644
index 93e6826f2a..0000000000
--- a/testing/constraints-3.8.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- coding: utf-8 -*-
-# This constraints file is required for unit tests.
-# List all library dependencies and extras in this file.
-google-api-core
-google-auth
-grpcio
-proto-plus
-protobuf
diff --git a/testing/constraints-3.9.txt b/testing/constraints-3.9.txt
deleted file mode 100644
index 93e6826f2a..0000000000
--- a/testing/constraints-3.9.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# -*- coding: utf-8 -*-
-# This constraints file is required for unit tests.
-# List all library dependencies and extras in this file.
-google-api-core
-google-auth
-grpcio
-proto-plus
-protobuf
diff --git a/tests/__init__.py b/tests/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/tests/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/tests/unit/__init__.py b/tests/unit/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/tests/unit/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/tests/unit/gapic/__init__.py b/tests/unit/gapic/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/tests/unit/gapic/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/tests/unit/gapic/spanner_admin_database_v1/__init__.py b/tests/unit/gapic/spanner_admin_database_v1/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/tests/unit/gapic/spanner_admin_database_v1/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/tests/unit/gapic/spanner_admin_database_v1/test_database_admin.py b/tests/unit/gapic/spanner_admin_database_v1/test_database_admin.py
deleted file mode 100644
index 76c83a302e..0000000000
--- a/tests/unit/gapic/spanner_admin_database_v1/test_database_admin.py
+++ /dev/null
@@ -1,24887 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import os
-import re
-
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
-
-from collections.abc import AsyncIterable, Iterable
-import json
-import math
-
-from google.api_core import api_core_version
-from google.protobuf import json_format
-import grpc
-from grpc.experimental import aio
-from proto.marshal.rules import wrappers
-from proto.marshal.rules.dates import DurationRule, TimestampRule
-import pytest
-from requests import PreparedRequest, Request, Response
-from requests.sessions import Session
-
-try:
-    from google.auth.aio import credentials as ga_credentials_async
-
-    HAS_GOOGLE_AUTH_AIO = True
-except ImportError:  # pragma: NO COVER
-    HAS_GOOGLE_AUTH_AIO = False
-
-from google.api_core import (
-    future,
-    gapic_v1,
-    grpc_helpers,
-    grpc_helpers_async,
-    operation,
-    operations_v1,
-    path_template,
-)
-from google.api_core import client_options
-from google.api_core import exceptions as core_exceptions
-from google.api_core import operation_async  # type: ignore
-from google.api_core import retry as retries
-import google.auth
-from google.auth import credentials as ga_credentials
-from google.auth.exceptions import MutualTLSChannelError
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import options_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.oauth2 import service_account
-from google.protobuf import any_pb2  # type: ignore
-from google.protobuf import duration_pb2  # type: ignore
-from google.protobuf import empty_pb2  # type: ignore
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.rpc import status_pb2  # type: ignore
-from google.type import expr_pb2  # type: ignore
-
-from google.cloud.spanner_admin_database_v1.services.database_admin import (
-    DatabaseAdminAsyncClient,
-    DatabaseAdminClient,
-    pagers,
-    transports,
-)
-from google.cloud.spanner_admin_database_v1.types import common, spanner_database_admin
-from google.cloud.spanner_admin_database_v1.types import (
-    backup_schedule as gsad_backup_schedule,
-)
-from google.cloud.spanner_admin_database_v1.types import backup
-from google.cloud.spanner_admin_database_v1.types import backup as gsad_backup
-from google.cloud.spanner_admin_database_v1.types import backup_schedule
-
-CRED_INFO_JSON = {
-    "credential_source": "/path/to/file",
-    "credential_type": "service account credentials",
-    "principal": "service-account@example.com",
-}
-CRED_INFO_STRING = json.dumps(CRED_INFO_JSON)
-
-
-async def mock_async_gen(data, chunk_size=1):
-    for i in range(0, len(data)):  # pragma: NO COVER
-        chunk = data[i : i + chunk_size]
-        yield chunk.encode("utf-8")
-
-
-def client_cert_source_callback():
-    return b"cert bytes", b"key bytes"
-
-
-# TODO: use async auth anon credentials by default once the minimum version of google-auth is upgraded.
-# See related issue: https://github.com/googleapis/gapic-generator-python/issues/2107.
-def async_anonymous_credentials():
-    if HAS_GOOGLE_AUTH_AIO:
-        return ga_credentials_async.AnonymousCredentials()
-    return ga_credentials.AnonymousCredentials()
-
-
-# If default endpoint is localhost, then default mtls endpoint will be the same.
-# This method modifies the default endpoint so the client can produce a different
-# mtls endpoint for endpoint testing purposes.
-def modify_default_endpoint(client):
-    return (
-        "foo.googleapis.com"
-        if ("localhost" in client.DEFAULT_ENDPOINT)
-        else client.DEFAULT_ENDPOINT
-    )
-
-
-# If default endpoint template is localhost, then default mtls endpoint will be the same.
-# This method modifies the default endpoint template so the client can produce a different
-# mtls endpoint for endpoint testing purposes.
-def modify_default_endpoint_template(client):
-    return (
-        "test.{UNIVERSE_DOMAIN}"
-        if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE)
-        else client._DEFAULT_ENDPOINT_TEMPLATE
-    )
-
-
-def test__get_default_mtls_endpoint():
-    api_endpoint = "example.googleapis.com"
-    api_mtls_endpoint = "example.mtls.googleapis.com"
-    sandbox_endpoint = "example.sandbox.googleapis.com"
-    sandbox_mtls_endpoint = "example.mtls.sandbox.googleapis.com"
-    non_googleapi = "api.example.com"
-
-    assert DatabaseAdminClient._get_default_mtls_endpoint(None) is None
-    assert (
-        DatabaseAdminClient._get_default_mtls_endpoint(api_endpoint)
-        == api_mtls_endpoint
-    )
-    assert (
-        DatabaseAdminClient._get_default_mtls_endpoint(api_mtls_endpoint)
-        == api_mtls_endpoint
-    )
-    assert (
-        DatabaseAdminClient._get_default_mtls_endpoint(sandbox_endpoint)
-        == sandbox_mtls_endpoint
-    )
-    assert (
-        DatabaseAdminClient._get_default_mtls_endpoint(sandbox_mtls_endpoint)
-        == sandbox_mtls_endpoint
-    )
-    assert (
-        DatabaseAdminClient._get_default_mtls_endpoint(non_googleapi) == non_googleapi
-    )
-
-
-def test__read_environment_variables():
-    assert DatabaseAdminClient._read_environment_variables() == (False, "auto", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        assert DatabaseAdminClient._read_environment_variables() == (True, "auto", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}):
-        assert DatabaseAdminClient._read_environment_variables() == (
-            False,
-            "auto",
-            None,
-        )
-
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "Unsupported"}
-    ):
-        if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-            with pytest.raises(ValueError) as excinfo:
-                DatabaseAdminClient._read_environment_variables()
-            assert (
-                str(excinfo.value)
-                == "Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be either `true` or `false`"
-            )
-        else:
-            assert DatabaseAdminClient._read_environment_variables() == (
-                False,
-                "auto",
-                None,
-            )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        assert DatabaseAdminClient._read_environment_variables() == (
-            False,
-            "never",
-            None,
-        )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        assert DatabaseAdminClient._read_environment_variables() == (
-            False,
-            "always",
-            None,
-        )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "auto"}):
-        assert DatabaseAdminClient._read_environment_variables() == (
-            False,
-            "auto",
-            None,
-        )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            DatabaseAdminClient._read_environment_variables()
-    assert (
-        str(excinfo.value)
-        == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-    )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_CLOUD_UNIVERSE_DOMAIN": "foo.com"}):
-        assert DatabaseAdminClient._read_environment_variables() == (
-            False,
-            "auto",
-            "foo.com",
-        )
-
-
-def test_use_client_cert_effective():
-    # Test case 1: Test when `should_use_client_cert` returns True.
-    # We mock the `should_use_client_cert` function to simulate a scenario where
-    # the google-auth library supports automatic mTLS and determines that a
-    # client certificate should be used.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch(
-            "google.auth.transport.mtls.should_use_client_cert", return_value=True
-        ):
-            assert DatabaseAdminClient._use_client_cert_effective() is True
-
-    # Test case 2: Test when `should_use_client_cert` returns False.
-    # We mock the `should_use_client_cert` function to simulate a scenario where
-    # the google-auth library supports automatic mTLS and determines that a
-    # client certificate should NOT be used.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch(
-            "google.auth.transport.mtls.should_use_client_cert", return_value=False
-        ):
-            assert DatabaseAdminClient._use_client_cert_effective() is False
-
-    # Test case 3: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "true".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-            assert DatabaseAdminClient._use_client_cert_effective() is True
-
-    # Test case 4: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "false".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}
-        ):
-            assert DatabaseAdminClient._use_client_cert_effective() is False
-
-    # Test case 5: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "True".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "True"}):
-            assert DatabaseAdminClient._use_client_cert_effective() is True
-
-    # Test case 6: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "False".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "False"}
-        ):
-            assert DatabaseAdminClient._use_client_cert_effective() is False
-
-    # Test case 7: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "TRUE".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "TRUE"}):
-            assert DatabaseAdminClient._use_client_cert_effective() is True
-
-    # Test case 8: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "FALSE".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "FALSE"}
-        ):
-            assert DatabaseAdminClient._use_client_cert_effective() is False
-
-    # Test case 9: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not set.
-    # In this case, the method should return False, which is the default value.
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, clear=True):
-            assert DatabaseAdminClient._use_client_cert_effective() is False
-
-    # Test case 10: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to an invalid value.
-    # The method should raise a ValueError as the environment variable must be either
-    # "true" or "false".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "unsupported"}
-        ):
-            with pytest.raises(ValueError):
-                DatabaseAdminClient._use_client_cert_effective()
-
-    # Test case 11: Test when `should_use_client_cert` is available and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to an invalid value.
-    # The method should return False as the environment variable is set to an invalid value.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "unsupported"}
-        ):
-            assert DatabaseAdminClient._use_client_cert_effective() is False
-
-    # Test case 12: Test when `should_use_client_cert` is available and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is unset. Also,
-    # the GOOGLE_API_CONFIG environment variable is unset.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": ""}):
-            with mock.patch.dict(os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": ""}):
-                assert DatabaseAdminClient._use_client_cert_effective() is False
-
-
-def test__get_client_cert_source():
-    mock_provided_cert_source = mock.Mock()
-    mock_default_cert_source = mock.Mock()
-
-    assert DatabaseAdminClient._get_client_cert_source(None, False) is None
-    assert (
-        DatabaseAdminClient._get_client_cert_source(mock_provided_cert_source, False)
-        is None
-    )
-    assert (
-        DatabaseAdminClient._get_client_cert_source(mock_provided_cert_source, True)
-        == mock_provided_cert_source
-    )
-
-    with mock.patch(
-        "google.auth.transport.mtls.has_default_client_cert_source", return_value=True
-    ):
-        with mock.patch(
-            "google.auth.transport.mtls.default_client_cert_source",
-            return_value=mock_default_cert_source,
-        ):
-            assert (
-                DatabaseAdminClient._get_client_cert_source(None, True)
-                is mock_default_cert_source
-            )
-            assert (
-                DatabaseAdminClient._get_client_cert_source(
-                    mock_provided_cert_source, "true"
-                )
-                is mock_provided_cert_source
-            )
-
-
-@mock.patch.object(
-    DatabaseAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminClient),
-)
-@mock.patch.object(
-    DatabaseAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminAsyncClient),
-)
-def test__get_api_endpoint():
-    api_override = "foo.com"
-    mock_client_cert_source = mock.Mock()
-    default_universe = DatabaseAdminClient._DEFAULT_UNIVERSE
-    default_endpoint = DatabaseAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=default_universe
-    )
-    mock_universe = "bar.com"
-    mock_endpoint = DatabaseAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=mock_universe
-    )
-
-    assert (
-        DatabaseAdminClient._get_api_endpoint(
-            api_override, mock_client_cert_source, default_universe, "always"
-        )
-        == api_override
-    )
-    assert (
-        DatabaseAdminClient._get_api_endpoint(
-            None, mock_client_cert_source, default_universe, "auto"
-        )
-        == DatabaseAdminClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        DatabaseAdminClient._get_api_endpoint(None, None, default_universe, "auto")
-        == default_endpoint
-    )
-    assert (
-        DatabaseAdminClient._get_api_endpoint(None, None, default_universe, "always")
-        == DatabaseAdminClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        DatabaseAdminClient._get_api_endpoint(
-            None, mock_client_cert_source, default_universe, "always"
-        )
-        == DatabaseAdminClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        DatabaseAdminClient._get_api_endpoint(None, None, mock_universe, "never")
-        == mock_endpoint
-    )
-    assert (
-        DatabaseAdminClient._get_api_endpoint(None, None, default_universe, "never")
-        == default_endpoint
-    )
-
-    with pytest.raises(MutualTLSChannelError) as excinfo:
-        DatabaseAdminClient._get_api_endpoint(
-            None, mock_client_cert_source, mock_universe, "auto"
-        )
-    assert (
-        str(excinfo.value)
-        == "mTLS is not supported in any universe other than googleapis.com."
-    )
-
-
-def test__get_universe_domain():
-    client_universe_domain = "foo.com"
-    universe_domain_env = "bar.com"
-
-    assert (
-        DatabaseAdminClient._get_universe_domain(
-            client_universe_domain, universe_domain_env
-        )
-        == client_universe_domain
-    )
-    assert (
-        DatabaseAdminClient._get_universe_domain(None, universe_domain_env)
-        == universe_domain_env
-    )
-    assert (
-        DatabaseAdminClient._get_universe_domain(None, None)
-        == DatabaseAdminClient._DEFAULT_UNIVERSE
-    )
-
-    with pytest.raises(ValueError) as excinfo:
-        DatabaseAdminClient._get_universe_domain("", None)
-    assert str(excinfo.value) == "Universe Domain cannot be an empty string."
-
-
-@pytest.mark.parametrize(
-    "error_code,cred_info_json,show_cred_info",
-    [
-        (401, CRED_INFO_JSON, True),
-        (403, CRED_INFO_JSON, True),
-        (404, CRED_INFO_JSON, True),
-        (500, CRED_INFO_JSON, False),
-        (401, None, False),
-        (403, None, False),
-        (404, None, False),
-        (500, None, False),
-    ],
-)
-def test__add_cred_info_for_auth_errors(error_code, cred_info_json, show_cred_info):
-    cred = mock.Mock(["get_cred_info"])
-    cred.get_cred_info = mock.Mock(return_value=cred_info_json)
-    client = DatabaseAdminClient(credentials=cred)
-    client._transport._credentials = cred
-
-    error = core_exceptions.GoogleAPICallError("message", details=["foo"])
-    error.code = error_code
-
-    client._add_cred_info_for_auth_errors(error)
-    if show_cred_info:
-        assert error.details == ["foo", CRED_INFO_STRING]
-    else:
-        assert error.details == ["foo"]
-
-
-@pytest.mark.parametrize("error_code", [401, 403, 404, 500])
-def test__add_cred_info_for_auth_errors_no_get_cred_info(error_code):
-    cred = mock.Mock([])
-    assert not hasattr(cred, "get_cred_info")
-    client = DatabaseAdminClient(credentials=cred)
-    client._transport._credentials = cred
-
-    error = core_exceptions.GoogleAPICallError("message", details=[])
-    error.code = error_code
-
-    client._add_cred_info_for_auth_errors(error)
-    assert error.details == []
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_name",
-    [
-        (DatabaseAdminClient, "grpc"),
-        (DatabaseAdminAsyncClient, "grpc_asyncio"),
-        (DatabaseAdminClient, "rest"),
-    ],
-)
-def test_database_admin_client_from_service_account_info(client_class, transport_name):
-    creds = ga_credentials.AnonymousCredentials()
-    with mock.patch.object(
-        service_account.Credentials, "from_service_account_info"
-    ) as factory:
-        factory.return_value = creds
-        info = {"valid": True}
-        client = client_class.from_service_account_info(info, transport=transport_name)
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        assert client.transport._host == (
-            "spanner.googleapis.com:443"
-            if transport_name in ["grpc", "grpc_asyncio"]
-            else "https://spanner.googleapis.com"
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class,transport_name",
-    [
-        (transports.DatabaseAdminGrpcTransport, "grpc"),
-        (transports.DatabaseAdminGrpcAsyncIOTransport, "grpc_asyncio"),
-        (transports.DatabaseAdminRestTransport, "rest"),
-    ],
-)
-def test_database_admin_client_service_account_always_use_jwt(
-    transport_class, transport_name
-):
-    with mock.patch.object(
-        service_account.Credentials, "with_always_use_jwt_access", create=True
-    ) as use_jwt:
-        creds = service_account.Credentials(None, None, None)
-        transport = transport_class(credentials=creds, always_use_jwt_access=True)
-        use_jwt.assert_called_once_with(True)
-
-    with mock.patch.object(
-        service_account.Credentials, "with_always_use_jwt_access", create=True
-    ) as use_jwt:
-        creds = service_account.Credentials(None, None, None)
-        transport = transport_class(credentials=creds, always_use_jwt_access=False)
-        use_jwt.assert_not_called()
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_name",
-    [
-        (DatabaseAdminClient, "grpc"),
-        (DatabaseAdminAsyncClient, "grpc_asyncio"),
-        (DatabaseAdminClient, "rest"),
-    ],
-)
-def test_database_admin_client_from_service_account_file(client_class, transport_name):
-    creds = ga_credentials.AnonymousCredentials()
-    with mock.patch.object(
-        service_account.Credentials, "from_service_account_file"
-    ) as factory:
-        factory.return_value = creds
-        client = client_class.from_service_account_file(
-            "dummy/file/path.json", transport=transport_name
-        )
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        client = client_class.from_service_account_json(
-            "dummy/file/path.json", transport=transport_name
-        )
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        assert client.transport._host == (
-            "spanner.googleapis.com:443"
-            if transport_name in ["grpc", "grpc_asyncio"]
-            else "https://spanner.googleapis.com"
-        )
-
-
-def test_database_admin_client_get_transport_class():
-    transport = DatabaseAdminClient.get_transport_class()
-    available_transports = [
-        transports.DatabaseAdminGrpcTransport,
-        transports.DatabaseAdminRestTransport,
-    ]
-    assert transport in available_transports
-
-    transport = DatabaseAdminClient.get_transport_class("grpc")
-    assert transport == transports.DatabaseAdminGrpcTransport
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name",
-    [
-        (DatabaseAdminClient, transports.DatabaseAdminGrpcTransport, "grpc"),
-        (
-            DatabaseAdminAsyncClient,
-            transports.DatabaseAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-        ),
-        (DatabaseAdminClient, transports.DatabaseAdminRestTransport, "rest"),
-    ],
-)
-@mock.patch.object(
-    DatabaseAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminClient),
-)
-@mock.patch.object(
-    DatabaseAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminAsyncClient),
-)
-def test_database_admin_client_client_options(
-    client_class, transport_class, transport_name
-):
-    # Check that if channel is provided we won't create a new one.
-    with mock.patch.object(DatabaseAdminClient, "get_transport_class") as gtc:
-        transport = transport_class(credentials=ga_credentials.AnonymousCredentials())
-        client = client_class(transport=transport)
-        gtc.assert_not_called()
-
-    # Check that if channel is provided via str we will create a new one.
-    with mock.patch.object(DatabaseAdminClient, "get_transport_class") as gtc:
-        client = client_class(transport=transport_name)
-        gtc.assert_called()
-
-    # Check the case api_endpoint is provided.
-    options = client_options.ClientOptions(api_endpoint="squid.clam.whelk")
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(transport=transport_name, client_options=options)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host="squid.clam.whelk",
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT is
-    # "never".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(transport=transport_name)
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                ),
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT is
-    # "always".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(transport=transport_name)
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=client.DEFAULT_MTLS_ENDPOINT,
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT has
-    # unsupported value.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            client = client_class(transport=transport_name)
-    assert (
-        str(excinfo.value)
-        == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-    )
-
-    # Check the case quota_project_id is provided
-    options = client_options.ClientOptions(quota_project_id="octopus")
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id="octopus",
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-    # Check the case api_endpoint is provided
-    options = client_options.ClientOptions(
-        api_audience="https://language.googleapis.com"
-    )
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience="https://language.googleapis.com",
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,use_client_cert_env",
-    [
-        (DatabaseAdminClient, transports.DatabaseAdminGrpcTransport, "grpc", "true"),
-        (
-            DatabaseAdminAsyncClient,
-            transports.DatabaseAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            "true",
-        ),
-        (DatabaseAdminClient, transports.DatabaseAdminGrpcTransport, "grpc", "false"),
-        (
-            DatabaseAdminAsyncClient,
-            transports.DatabaseAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            "false",
-        ),
-        (DatabaseAdminClient, transports.DatabaseAdminRestTransport, "rest", "true"),
-        (DatabaseAdminClient, transports.DatabaseAdminRestTransport, "rest", "false"),
-    ],
-)
-@mock.patch.object(
-    DatabaseAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminClient),
-)
-@mock.patch.object(
-    DatabaseAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminAsyncClient),
-)
-@mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "auto"})
-def test_database_admin_client_mtls_env_auto(
-    client_class, transport_class, transport_name, use_client_cert_env
-):
-    # This tests the endpoint autoswitch behavior. Endpoint is autoswitched to the default
-    # mtls endpoint, if GOOGLE_API_USE_CLIENT_CERTIFICATE is "true" and client cert exists.
-
-    # Check the case client_cert_source is provided. Whether client cert is used depends on
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE value.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        options = client_options.ClientOptions(
-            client_cert_source=client_cert_source_callback
-        )
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(client_options=options, transport=transport_name)
-
-            if use_client_cert_env == "false":
-                expected_client_cert_source = None
-                expected_host = client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                )
-            else:
-                expected_client_cert_source = client_cert_source_callback
-                expected_host = client.DEFAULT_MTLS_ENDPOINT
-
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=expected_host,
-                scopes=None,
-                client_cert_source_for_mtls=expected_client_cert_source,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
-
-    # Check the case ADC client cert is provided. Whether client cert is used depends on
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE value.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            with mock.patch(
-                "google.auth.transport.mtls.has_default_client_cert_source",
-                return_value=True,
-            ):
-                with mock.patch(
-                    "google.auth.transport.mtls.default_client_cert_source",
-                    return_value=client_cert_source_callback,
-                ):
-                    if use_client_cert_env == "false":
-                        expected_host = client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                            UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                        )
-                        expected_client_cert_source = None
-                    else:
-                        expected_host = client.DEFAULT_MTLS_ENDPOINT
-                        expected_client_cert_source = client_cert_source_callback
-
-                    patched.return_value = None
-                    client = client_class(transport=transport_name)
-                    patched.assert_called_once_with(
-                        credentials=None,
-                        credentials_file=None,
-                        host=expected_host,
-                        scopes=None,
-                        client_cert_source_for_mtls=expected_client_cert_source,
-                        quota_project_id=None,
-                        client_info=transports.base.DEFAULT_CLIENT_INFO,
-                        always_use_jwt_access=True,
-                        api_audience=None,
-                    )
-
-    # Check the case client_cert_source and ADC client cert are not provided.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            with mock.patch(
-                "google.auth.transport.mtls.has_default_client_cert_source",
-                return_value=False,
-            ):
-                patched.return_value = None
-                client = client_class(transport=transport_name)
-                patched.assert_called_once_with(
-                    credentials=None,
-                    credentials_file=None,
-                    host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                        UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                    ),
-                    scopes=None,
-                    client_cert_source_for_mtls=None,
-                    quota_project_id=None,
-                    client_info=transports.base.DEFAULT_CLIENT_INFO,
-                    always_use_jwt_access=True,
-                    api_audience=None,
-                )
-
-
-@pytest.mark.parametrize(
-    "client_class", [DatabaseAdminClient, DatabaseAdminAsyncClient]
-)
-@mock.patch.object(
-    DatabaseAdminClient,
-    "DEFAULT_ENDPOINT",
-    modify_default_endpoint(DatabaseAdminClient),
-)
-@mock.patch.object(
-    DatabaseAdminAsyncClient,
-    "DEFAULT_ENDPOINT",
-    modify_default_endpoint(DatabaseAdminAsyncClient),
-)
-def test_database_admin_client_get_mtls_endpoint_and_cert_source(client_class):
-    mock_client_cert_source = mock.Mock()
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "true".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        mock_api_endpoint = "foo"
-        options = client_options.ClientOptions(
-            client_cert_source=mock_client_cert_source, api_endpoint=mock_api_endpoint
-        )
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-            options
-        )
-        assert api_endpoint == mock_api_endpoint
-        assert cert_source == mock_client_cert_source
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "false".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}):
-        mock_client_cert_source = mock.Mock()
-        mock_api_endpoint = "foo"
-        options = client_options.ClientOptions(
-            client_cert_source=mock_client_cert_source, api_endpoint=mock_api_endpoint
-        )
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-            options
-        )
-        assert api_endpoint == mock_api_endpoint
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "Unsupported".
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "Unsupported"}
-    ):
-        if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-            mock_client_cert_source = mock.Mock()
-            mock_api_endpoint = "foo"
-            options = client_options.ClientOptions(
-                client_cert_source=mock_client_cert_source,
-                api_endpoint=mock_api_endpoint,
-            )
-            api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-                options
-            )
-            assert api_endpoint == mock_api_endpoint
-            assert cert_source is None
-
-    # Test cases for mTLS enablement when GOOGLE_API_USE_CLIENT_CERTIFICATE is unset.
-    test_cases = [
-        (
-            # With workloads present in config, mTLS is enabled.
-            {
-                "version": 1,
-                "cert_configs": {
-                    "workload": {
-                        "cert_path": "path/to/cert/file",
-                        "key_path": "path/to/key/file",
-                    }
-                },
-            },
-            mock_client_cert_source,
-        ),
-        (
-            # With workloads not present in config, mTLS is disabled.
-            {
-                "version": 1,
-                "cert_configs": {},
-            },
-            None,
-        ),
-    ]
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        for config_data, expected_cert_source in test_cases:
-            env = os.environ.copy()
-            env.pop("GOOGLE_API_USE_CLIENT_CERTIFICATE", None)
-            with mock.patch.dict(os.environ, env, clear=True):
-                config_filename = "mock_certificate_config.json"
-                config_file_content = json.dumps(config_data)
-                m = mock.mock_open(read_data=config_file_content)
-                with mock.patch("builtins.open", m):
-                    with mock.patch.dict(
-                        os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": config_filename}
-                    ):
-                        mock_api_endpoint = "foo"
-                        options = client_options.ClientOptions(
-                            client_cert_source=mock_client_cert_source,
-                            api_endpoint=mock_api_endpoint,
-                        )
-                        (
-                            api_endpoint,
-                            cert_source,
-                        ) = client_class.get_mtls_endpoint_and_cert_source(options)
-                        assert api_endpoint == mock_api_endpoint
-                        assert cert_source is expected_cert_source
-
-    # Test cases for mTLS enablement when GOOGLE_API_USE_CLIENT_CERTIFICATE is unset(empty).
-    test_cases = [
-        (
-            # With workloads present in config, mTLS is enabled.
-            {
-                "version": 1,
-                "cert_configs": {
-                    "workload": {
-                        "cert_path": "path/to/cert/file",
-                        "key_path": "path/to/key/file",
-                    }
-                },
-            },
-            mock_client_cert_source,
-        ),
-        (
-            # With workloads not present in config, mTLS is disabled.
-            {
-                "version": 1,
-                "cert_configs": {},
-            },
-            None,
-        ),
-    ]
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        for config_data, expected_cert_source in test_cases:
-            env = os.environ.copy()
-            env.pop("GOOGLE_API_USE_CLIENT_CERTIFICATE", "")
-            with mock.patch.dict(os.environ, env, clear=True):
-                config_filename = "mock_certificate_config.json"
-                config_file_content = json.dumps(config_data)
-                m = mock.mock_open(read_data=config_file_content)
-                with mock.patch("builtins.open", m):
-                    with mock.patch.dict(
-                        os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": config_filename}
-                    ):
-                        mock_api_endpoint = "foo"
-                        options = client_options.ClientOptions(
-                            client_cert_source=mock_client_cert_source,
-                            api_endpoint=mock_api_endpoint,
-                        )
-                        (
-                            api_endpoint,
-                            cert_source,
-                        ) = client_class.get_mtls_endpoint_and_cert_source(options)
-                        assert api_endpoint == mock_api_endpoint
-                        assert cert_source is expected_cert_source
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "never".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-        assert api_endpoint == client_class.DEFAULT_ENDPOINT
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "always".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-        assert api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "auto" and default cert doesn't exist.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.mtls.has_default_client_cert_source",
-            return_value=False,
-        ):
-            api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-            assert api_endpoint == client_class.DEFAULT_ENDPOINT
-            assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "auto" and default cert exists.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.mtls.has_default_client_cert_source",
-            return_value=True,
-        ):
-            with mock.patch(
-                "google.auth.transport.mtls.default_client_cert_source",
-                return_value=mock_client_cert_source,
-            ):
-                (
-                    api_endpoint,
-                    cert_source,
-                ) = client_class.get_mtls_endpoint_and_cert_source()
-                assert api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-                assert cert_source == mock_client_cert_source
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT has
-    # unsupported value.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            client_class.get_mtls_endpoint_and_cert_source()
-
-        assert (
-            str(excinfo.value)
-            == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class", [DatabaseAdminClient, DatabaseAdminAsyncClient]
-)
-@mock.patch.object(
-    DatabaseAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminClient),
-)
-@mock.patch.object(
-    DatabaseAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(DatabaseAdminAsyncClient),
-)
-def test_database_admin_client_client_api_endpoint(client_class):
-    mock_client_cert_source = client_cert_source_callback
-    api_override = "foo.com"
-    default_universe = DatabaseAdminClient._DEFAULT_UNIVERSE
-    default_endpoint = DatabaseAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=default_universe
-    )
-    mock_universe = "bar.com"
-    mock_endpoint = DatabaseAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=mock_universe
-    )
-
-    # If ClientOptions.api_endpoint is set and GOOGLE_API_USE_CLIENT_CERTIFICATE="true",
-    # use ClientOptions.api_endpoint as the api endpoint regardless.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.requests.AuthorizedSession.configure_mtls_channel"
-        ):
-            options = client_options.ClientOptions(
-                client_cert_source=mock_client_cert_source, api_endpoint=api_override
-            )
-            client = client_class(
-                client_options=options,
-                credentials=ga_credentials.AnonymousCredentials(),
-            )
-            assert client.api_endpoint == api_override
-
-    # If ClientOptions.api_endpoint is not set and GOOGLE_API_USE_MTLS_ENDPOINT="never",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with GDU as the api endpoint.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        client = client_class(credentials=ga_credentials.AnonymousCredentials())
-        assert client.api_endpoint == default_endpoint
-
-    # If ClientOptions.api_endpoint is not set and GOOGLE_API_USE_MTLS_ENDPOINT="always",
-    # use the DEFAULT_MTLS_ENDPOINT as the api endpoint.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        client = client_class(credentials=ga_credentials.AnonymousCredentials())
-        assert client.api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-
-    # If ClientOptions.api_endpoint is not set, GOOGLE_API_USE_MTLS_ENDPOINT="auto" (default),
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE="false" (default), default cert source doesn't exist,
-    # and ClientOptions.universe_domain="bar.com",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with universe domain as the api endpoint.
-    options = client_options.ClientOptions()
-    universe_exists = hasattr(options, "universe_domain")
-    if universe_exists:
-        options = client_options.ClientOptions(universe_domain=mock_universe)
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-    else:
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-    assert client.api_endpoint == (
-        mock_endpoint if universe_exists else default_endpoint
-    )
-    assert client.universe_domain == (
-        mock_universe if universe_exists else default_universe
-    )
-
-    # If ClientOptions does not have a universe domain attribute and GOOGLE_API_USE_MTLS_ENDPOINT="never",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with GDU as the api endpoint.
-    options = client_options.ClientOptions()
-    if hasattr(options, "universe_domain"):
-        delattr(options, "universe_domain")
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-        assert client.api_endpoint == default_endpoint
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name",
-    [
-        (DatabaseAdminClient, transports.DatabaseAdminGrpcTransport, "grpc"),
-        (
-            DatabaseAdminAsyncClient,
-            transports.DatabaseAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-        ),
-        (DatabaseAdminClient, transports.DatabaseAdminRestTransport, "rest"),
-    ],
-)
-def test_database_admin_client_client_options_scopes(
-    client_class, transport_class, transport_name
-):
-    # Check the case scopes are provided.
-    options = client_options.ClientOptions(
-        scopes=["1", "2"],
-    )
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=["1", "2"],
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,grpc_helpers",
-    [
-        (
-            DatabaseAdminClient,
-            transports.DatabaseAdminGrpcTransport,
-            "grpc",
-            grpc_helpers,
-        ),
-        (
-            DatabaseAdminAsyncClient,
-            transports.DatabaseAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            grpc_helpers_async,
-        ),
-        (DatabaseAdminClient, transports.DatabaseAdminRestTransport, "rest", None),
-    ],
-)
-def test_database_admin_client_client_options_credentials_file(
-    client_class, transport_class, transport_name, grpc_helpers
-):
-    # Check the case credentials file is provided.
-    options = client_options.ClientOptions(credentials_file="credentials.json")
-
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file="credentials.json",
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-
-def test_database_admin_client_client_options_from_dict():
-    with mock.patch(
-        "google.cloud.spanner_admin_database_v1.services.database_admin.transports.DatabaseAdminGrpcTransport.__init__"
-    ) as grpc_transport:
-        grpc_transport.return_value = None
-        client = DatabaseAdminClient(
-            client_options={"api_endpoint": "squid.clam.whelk"}
-        )
-        grpc_transport.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host="squid.clam.whelk",
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,grpc_helpers",
-    [
-        (
-            DatabaseAdminClient,
-            transports.DatabaseAdminGrpcTransport,
-            "grpc",
-            grpc_helpers,
-        ),
-        (
-            DatabaseAdminAsyncClient,
-            transports.DatabaseAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            grpc_helpers_async,
-        ),
-    ],
-)
-def test_database_admin_client_create_channel_credentials_file(
-    client_class, transport_class, transport_name, grpc_helpers
-):
-    # Check the case credentials file is provided.
-    options = client_options.ClientOptions(credentials_file="credentials.json")
-
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file="credentials.json",
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-    # test that the credentials from file are saved and used as the credentials.
-    with mock.patch.object(
-        google.auth, "load_credentials_from_file", autospec=True
-    ) as load_creds, mock.patch.object(
-        google.auth, "default", autospec=True
-    ) as adc, mock.patch.object(
-        grpc_helpers, "create_channel"
-    ) as create_channel:
-        creds = ga_credentials.AnonymousCredentials()
-        file_creds = ga_credentials.AnonymousCredentials()
-        load_creds.return_value = (file_creds, None)
-        adc.return_value = (creds, None)
-        client = client_class(client_options=options, transport=transport_name)
-        create_channel.assert_called_with(
-            "spanner.googleapis.com:443",
-            credentials=file_creds,
-            credentials_file=None,
-            quota_project_id=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            scopes=None,
-            default_host="spanner.googleapis.com",
-            ssl_credentials=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.ListDatabasesRequest,
-        dict,
-    ],
-)
-def test_list_databases(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabasesResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_databases(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.ListDatabasesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabasesPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_databases_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.ListDatabasesRequest(
-        parent="parent_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_databases(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.ListDatabasesRequest(
-            parent="parent_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_databases_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_databases in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_databases] = mock_rpc
-        request = {}
-        client.list_databases(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_databases(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_databases_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_databases
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_databases
-        ] = mock_rpc
-
-        request = {}
-        await client.list_databases(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_databases(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_databases_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.ListDatabasesRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabasesResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_databases(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.ListDatabasesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabasesAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_databases_async_from_dict():
-    await test_list_databases_async(request_type=dict)
-
-
-def test_list_databases_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.ListDatabasesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        call.return_value = spanner_database_admin.ListDatabasesResponse()
-        client.list_databases(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_databases_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.ListDatabasesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabasesResponse()
-        )
-        await client.list_databases(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_databases_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabasesResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_databases(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_databases_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_databases(
-            spanner_database_admin.ListDatabasesRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_databases_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabasesResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabasesResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_databases(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_databases_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_databases(
-            spanner_database_admin.ListDatabasesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_databases_pager(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_databases(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner_database_admin.Database) for i in results)
-
-
-def test_list_databases_pages(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_databases(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_databases_async_pager():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_databases), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_databases(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, spanner_database_admin.Database) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_databases_async_pages():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_databases), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_databases(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.CreateDatabaseRequest,
-        dict,
-    ],
-)
-def test_create_database(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.create_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.CreateDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_create_database_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.CreateDatabaseRequest(
-        parent="parent_value",
-        create_statement="create_statement_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.create_database(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.CreateDatabaseRequest(
-            parent="parent_value",
-            create_statement="create_statement_value",
-        )
-
-
-def test_create_database_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_database] = mock_rpc
-        request = {}
-        client.create_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_database_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.create_database
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.create_database
-        ] = mock_rpc
-
-        request = {}
-        await client.create_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.create_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_database_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.CreateDatabaseRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.create_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.CreateDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_create_database_async_from_dict():
-    await test_create_database_async(request_type=dict)
-
-
-def test_create_database_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.CreateDatabaseRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_create_database_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.CreateDatabaseRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.create_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_create_database_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.create_database(
-            parent="parent_value",
-            create_statement="create_statement_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].create_statement
-        mock_val = "create_statement_value"
-        assert arg == mock_val
-
-
-def test_create_database_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_database(
-            spanner_database_admin.CreateDatabaseRequest(),
-            parent="parent_value",
-            create_statement="create_statement_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_create_database_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.create_database(
-            parent="parent_value",
-            create_statement="create_statement_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].create_statement
-        mock_val = "create_statement_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_create_database_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.create_database(
-            spanner_database_admin.CreateDatabaseRequest(),
-            parent="parent_value",
-            create_statement="create_statement_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.GetDatabaseRequest,
-        dict,
-    ],
-)
-def test_get_database(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.Database(
-            name="name_value",
-            state=spanner_database_admin.Database.State.CREATING,
-            version_retention_period="version_retention_period_value",
-            default_leader="default_leader_value",
-            database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-            enable_drop_protection=True,
-            reconciling=True,
-        )
-        response = client.get_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.GetDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.Database)
-    assert response.name == "name_value"
-    assert response.state == spanner_database_admin.Database.State.CREATING
-    assert response.version_retention_period == "version_retention_period_value"
-    assert response.default_leader == "default_leader_value"
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.enable_drop_protection is True
-    assert response.reconciling is True
-
-
-def test_get_database_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.GetDatabaseRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_database(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.GetDatabaseRequest(
-            name="name_value",
-        )
-
-
-def test_get_database_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_database] = mock_rpc
-        request = {}
-        client.get_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_database_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_database
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_database
-        ] = mock_rpc
-
-        request = {}
-        await client.get_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_database_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.GetDatabaseRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.Database(
-                name="name_value",
-                state=spanner_database_admin.Database.State.CREATING,
-                version_retention_period="version_retention_period_value",
-                default_leader="default_leader_value",
-                database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-                enable_drop_protection=True,
-                reconciling=True,
-            )
-        )
-        response = await client.get_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.GetDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.Database)
-    assert response.name == "name_value"
-    assert response.state == spanner_database_admin.Database.State.CREATING
-    assert response.version_retention_period == "version_retention_period_value"
-    assert response.default_leader == "default_leader_value"
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.enable_drop_protection is True
-    assert response.reconciling is True
-
-
-@pytest.mark.asyncio
-async def test_get_database_async_from_dict():
-    await test_get_database_async(request_type=dict)
-
-
-def test_get_database_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.GetDatabaseRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        call.return_value = spanner_database_admin.Database()
-        client.get_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_database_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.GetDatabaseRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.Database()
-        )
-        await client.get_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_get_database_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.Database()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_database(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_get_database_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_database(
-            spanner_database_admin.GetDatabaseRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_database_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.Database()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.Database()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_database(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_database_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_database(
-            spanner_database_admin.GetDatabaseRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.UpdateDatabaseRequest,
-        dict,
-    ],
-)
-def test_update_database(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.update_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.UpdateDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_update_database_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.UpdateDatabaseRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.update_database(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.UpdateDatabaseRequest()
-
-
-def test_update_database_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.update_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.update_database] = mock_rpc
-        request = {}
-        client.update_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_database_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.update_database
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.update_database
-        ] = mock_rpc
-
-        request = {}
-        await client.update_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.update_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_database_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.UpdateDatabaseRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.update_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.UpdateDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_update_database_async_from_dict():
-    await test_update_database_async(request_type=dict)
-
-
-def test_update_database_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.UpdateDatabaseRequest()
-
-    request.database.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database.name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_update_database_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.UpdateDatabaseRequest()
-
-    request.database.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.update_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database.name=name_value",
-    ) in kw["metadata"]
-
-
-def test_update_database_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.update_database(
-            database=spanner_database_admin.Database(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = spanner_database_admin.Database(name="name_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-def test_update_database_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_database(
-            spanner_database_admin.UpdateDatabaseRequest(),
-            database=spanner_database_admin.Database(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.asyncio
-async def test_update_database_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.update_database(
-            database=spanner_database_admin.Database(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = spanner_database_admin.Database(name="name_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_update_database_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.update_database(
-            spanner_database_admin.UpdateDatabaseRequest(),
-            database=spanner_database_admin.Database(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.UpdateDatabaseDdlRequest,
-        dict,
-    ],
-)
-def test_update_database_ddl(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.update_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.UpdateDatabaseDdlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_update_database_ddl_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.UpdateDatabaseDdlRequest(
-        database="database_value",
-        operation_id="operation_id_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.update_database_ddl(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.UpdateDatabaseDdlRequest(
-            database="database_value",
-            operation_id="operation_id_value",
-        )
-
-
-def test_update_database_ddl_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_database_ddl in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_database_ddl
-        ] = mock_rpc
-        request = {}
-        client.update_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_database_ddl(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_database_ddl_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.update_database_ddl
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.update_database_ddl
-        ] = mock_rpc
-
-        request = {}
-        await client.update_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.update_database_ddl(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_database_ddl_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.UpdateDatabaseDdlRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.update_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.UpdateDatabaseDdlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_update_database_ddl_async_from_dict():
-    await test_update_database_ddl_async(request_type=dict)
-
-
-def test_update_database_ddl_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.UpdateDatabaseDdlRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_update_database_ddl_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.UpdateDatabaseDdlRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.update_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-def test_update_database_ddl_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.update_database_ddl(
-            database="database_value",
-            statements=["statements_value"],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].statements
-        mock_val = ["statements_value"]
-        assert arg == mock_val
-
-
-def test_update_database_ddl_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_database_ddl(
-            spanner_database_admin.UpdateDatabaseDdlRequest(),
-            database="database_value",
-            statements=["statements_value"],
-        )
-
-
-@pytest.mark.asyncio
-async def test_update_database_ddl_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.update_database_ddl(
-            database="database_value",
-            statements=["statements_value"],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].statements
-        mock_val = ["statements_value"]
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_update_database_ddl_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.update_database_ddl(
-            spanner_database_admin.UpdateDatabaseDdlRequest(),
-            database="database_value",
-            statements=["statements_value"],
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.DropDatabaseRequest,
-        dict,
-    ],
-)
-def test_drop_database(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.drop_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.DropDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_drop_database_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.DropDatabaseRequest(
-        database="database_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.drop_database(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.DropDatabaseRequest(
-            database="database_value",
-        )
-
-
-def test_drop_database_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.drop_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.drop_database] = mock_rpc
-        request = {}
-        client.drop_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.drop_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_drop_database_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.drop_database
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.drop_database
-        ] = mock_rpc
-
-        request = {}
-        await client.drop_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.drop_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_drop_database_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.DropDatabaseRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.drop_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.DropDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_drop_database_async_from_dict():
-    await test_drop_database_async(request_type=dict)
-
-
-def test_drop_database_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.DropDatabaseRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        call.return_value = None
-        client.drop_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_drop_database_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.DropDatabaseRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.drop_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-def test_drop_database_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.drop_database(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-def test_drop_database_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.drop_database(
-            spanner_database_admin.DropDatabaseRequest(),
-            database="database_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_drop_database_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.drop_database(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_drop_database_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.drop_database(
-            spanner_database_admin.DropDatabaseRequest(),
-            database="database_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.GetDatabaseDdlRequest,
-        dict,
-    ],
-)
-def test_get_database_ddl(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.GetDatabaseDdlResponse(
-            statements=["statements_value"],
-            proto_descriptors=b"proto_descriptors_blob",
-        )
-        response = client.get_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.GetDatabaseDdlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.GetDatabaseDdlResponse)
-    assert response.statements == ["statements_value"]
-    assert response.proto_descriptors == b"proto_descriptors_blob"
-
-
-def test_get_database_ddl_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.GetDatabaseDdlRequest(
-        database="database_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_database_ddl(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.GetDatabaseDdlRequest(
-            database="database_value",
-        )
-
-
-def test_get_database_ddl_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_database_ddl in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_database_ddl
-        ] = mock_rpc
-        request = {}
-        client.get_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_database_ddl(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_database_ddl_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_database_ddl
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_database_ddl
-        ] = mock_rpc
-
-        request = {}
-        await client.get_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_database_ddl(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_database_ddl_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.GetDatabaseDdlRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.GetDatabaseDdlResponse(
-                statements=["statements_value"],
-                proto_descriptors=b"proto_descriptors_blob",
-            )
-        )
-        response = await client.get_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.GetDatabaseDdlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.GetDatabaseDdlResponse)
-    assert response.statements == ["statements_value"]
-    assert response.proto_descriptors == b"proto_descriptors_blob"
-
-
-@pytest.mark.asyncio
-async def test_get_database_ddl_async_from_dict():
-    await test_get_database_ddl_async(request_type=dict)
-
-
-def test_get_database_ddl_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.GetDatabaseDdlRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        call.return_value = spanner_database_admin.GetDatabaseDdlResponse()
-        client.get_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_database_ddl_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.GetDatabaseDdlRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.GetDatabaseDdlResponse()
-        )
-        await client.get_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-def test_get_database_ddl_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.GetDatabaseDdlResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_database_ddl(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-def test_get_database_ddl_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_database_ddl(
-            spanner_database_admin.GetDatabaseDdlRequest(),
-            database="database_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_database_ddl_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.GetDatabaseDdlResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.GetDatabaseDdlResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_database_ddl(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_database_ddl_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_database_ddl(
-            spanner_database_admin.GetDatabaseDdlRequest(),
-            database="database_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.SetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_set_iam_policy(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-        response = client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.SetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-def test_set_iam_policy_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = iam_policy_pb2.SetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.set_iam_policy(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == iam_policy_pb2.SetIamPolicyRequest(
-            resource="resource_value",
-        )
-
-
-def test_set_iam_policy_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.set_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.set_iam_policy] = mock_rpc
-        request = {}
-        client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.set_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.set_iam_policy
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.set_iam_policy
-        ] = mock_rpc
-
-        request = {}
-        await client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.set_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_async(
-    transport: str = "grpc_asyncio", request_type=iam_policy_pb2.SetIamPolicyRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        response = await client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.SetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_async_from_dict():
-    await test_set_iam_policy_async(request_type=dict)
-
-
-def test_set_iam_policy_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.SetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.SetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        await client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-def test_set_iam_policy_from_dict_foreign():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        response = client.set_iam_policy(
-            request={
-                "resource": "resource_value",
-                "policy": policy_pb2.Policy(version=774),
-                "update_mask": field_mask_pb2.FieldMask(paths=["paths_value"]),
-            }
-        )
-        call.assert_called()
-
-
-def test_set_iam_policy_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.set_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-def test_set_iam_policy_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.set_iam_policy(
-            iam_policy_pb2.SetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.set_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.set_iam_policy(
-            iam_policy_pb2.SetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.GetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_get_iam_policy(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-        response = client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.GetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-def test_get_iam_policy_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = iam_policy_pb2.GetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_iam_policy(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == iam_policy_pb2.GetIamPolicyRequest(
-            resource="resource_value",
-        )
-
-
-def test_get_iam_policy_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_iam_policy] = mock_rpc
-        request = {}
-        client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_iam_policy
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_iam_policy
-        ] = mock_rpc
-
-        request = {}
-        await client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_async(
-    transport: str = "grpc_asyncio", request_type=iam_policy_pb2.GetIamPolicyRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        response = await client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.GetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_async_from_dict():
-    await test_get_iam_policy_async(request_type=dict)
-
-
-def test_get_iam_policy_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.GetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.GetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        await client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-def test_get_iam_policy_from_dict_foreign():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        response = client.get_iam_policy(
-            request={
-                "resource": "resource_value",
-                "options": options_pb2.GetPolicyOptions(requested_policy_version=2598),
-            }
-        )
-        call.assert_called()
-
-
-def test_get_iam_policy_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-def test_get_iam_policy_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_iam_policy(
-            iam_policy_pb2.GetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_iam_policy(
-            iam_policy_pb2.GetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.TestIamPermissionsRequest,
-        dict,
-    ],
-)
-def test_test_iam_permissions(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse(
-            permissions=["permissions_value"],
-        )
-        response = client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.TestIamPermissionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, iam_policy_pb2.TestIamPermissionsResponse)
-    assert response.permissions == ["permissions_value"]
-
-
-def test_test_iam_permissions_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = iam_policy_pb2.TestIamPermissionsRequest(
-        resource="resource_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.test_iam_permissions(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == iam_policy_pb2.TestIamPermissionsRequest(
-            resource="resource_value",
-        )
-
-
-def test_test_iam_permissions_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.test_iam_permissions in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.test_iam_permissions
-        ] = mock_rpc
-        request = {}
-        client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.test_iam_permissions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.test_iam_permissions
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.test_iam_permissions
-        ] = mock_rpc
-
-        request = {}
-        await client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.test_iam_permissions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_async(
-    transport: str = "grpc_asyncio",
-    request_type=iam_policy_pb2.TestIamPermissionsRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse(
-                permissions=["permissions_value"],
-            )
-        )
-        response = await client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.TestIamPermissionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, iam_policy_pb2.TestIamPermissionsResponse)
-    assert response.permissions == ["permissions_value"]
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_async_from_dict():
-    await test_test_iam_permissions_async(request_type=dict)
-
-
-def test_test_iam_permissions_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.TestIamPermissionsRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.TestIamPermissionsRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse()
-        )
-        await client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-def test_test_iam_permissions_from_dict_foreign():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        response = client.test_iam_permissions(
-            request={
-                "resource": "resource_value",
-                "permissions": ["permissions_value"],
-            }
-        )
-        call.assert_called()
-
-
-def test_test_iam_permissions_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.test_iam_permissions(
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-        arg = args[0].permissions
-        mock_val = ["permissions_value"]
-        assert arg == mock_val
-
-
-def test_test_iam_permissions_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.test_iam_permissions(
-            iam_policy_pb2.TestIamPermissionsRequest(),
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.test_iam_permissions(
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-        arg = args[0].permissions
-        mock_val = ["permissions_value"]
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.test_iam_permissions(
-            iam_policy_pb2.TestIamPermissionsRequest(),
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup.CreateBackupRequest,
-        dict,
-    ],
-)
-def test_create_backup(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.create_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup.CreateBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_create_backup_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = gsad_backup.CreateBackupRequest(
-        parent="parent_value",
-        backup_id="backup_id_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.create_backup(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == gsad_backup.CreateBackupRequest(
-            parent="parent_value",
-            backup_id="backup_id_value",
-        )
-
-
-def test_create_backup_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_backup] = mock_rpc
-        request = {}
-        client.create_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_backup_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.create_backup
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.create_backup
-        ] = mock_rpc
-
-        request = {}
-        await client.create_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.create_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_backup_async(
-    transport: str = "grpc_asyncio", request_type=gsad_backup.CreateBackupRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.create_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup.CreateBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_create_backup_async_from_dict():
-    await test_create_backup_async(request_type=dict)
-
-
-def test_create_backup_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup.CreateBackupRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_create_backup_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup.CreateBackupRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.create_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_create_backup_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.create_backup(
-            parent="parent_value",
-            backup=gsad_backup.Backup(database="database_value"),
-            backup_id="backup_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].backup
-        mock_val = gsad_backup.Backup(database="database_value")
-        assert arg == mock_val
-        arg = args[0].backup_id
-        mock_val = "backup_id_value"
-        assert arg == mock_val
-
-
-def test_create_backup_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_backup(
-            gsad_backup.CreateBackupRequest(),
-            parent="parent_value",
-            backup=gsad_backup.Backup(database="database_value"),
-            backup_id="backup_id_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_create_backup_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.create_backup(
-            parent="parent_value",
-            backup=gsad_backup.Backup(database="database_value"),
-            backup_id="backup_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].backup
-        mock_val = gsad_backup.Backup(database="database_value")
-        assert arg == mock_val
-        arg = args[0].backup_id
-        mock_val = "backup_id_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_create_backup_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.create_backup(
-            gsad_backup.CreateBackupRequest(),
-            parent="parent_value",
-            backup=gsad_backup.Backup(database="database_value"),
-            backup_id="backup_id_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.CopyBackupRequest,
-        dict,
-    ],
-)
-def test_copy_backup(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.copy_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup.CopyBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_copy_backup_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup.CopyBackupRequest(
-        parent="parent_value",
-        backup_id="backup_id_value",
-        source_backup="source_backup_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.copy_backup(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup.CopyBackupRequest(
-            parent="parent_value",
-            backup_id="backup_id_value",
-            source_backup="source_backup_value",
-        )
-
-
-def test_copy_backup_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.copy_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.copy_backup] = mock_rpc
-        request = {}
-        client.copy_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.copy_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_copy_backup_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.copy_backup
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.copy_backup
-        ] = mock_rpc
-
-        request = {}
-        await client.copy_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.copy_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_copy_backup_async(
-    transport: str = "grpc_asyncio", request_type=backup.CopyBackupRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.copy_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup.CopyBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_copy_backup_async_from_dict():
-    await test_copy_backup_async(request_type=dict)
-
-
-def test_copy_backup_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.CopyBackupRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.copy_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_copy_backup_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.CopyBackupRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.copy_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_copy_backup_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.copy_backup(
-            parent="parent_value",
-            backup_id="backup_id_value",
-            source_backup="source_backup_value",
-            expire_time=timestamp_pb2.Timestamp(seconds=751),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].backup_id
-        mock_val = "backup_id_value"
-        assert arg == mock_val
-        arg = args[0].source_backup
-        mock_val = "source_backup_value"
-        assert arg == mock_val
-        assert TimestampRule().to_proto(args[0].expire_time) == timestamp_pb2.Timestamp(
-            seconds=751
-        )
-
-
-def test_copy_backup_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.copy_backup(
-            backup.CopyBackupRequest(),
-            parent="parent_value",
-            backup_id="backup_id_value",
-            source_backup="source_backup_value",
-            expire_time=timestamp_pb2.Timestamp(seconds=751),
-        )
-
-
-@pytest.mark.asyncio
-async def test_copy_backup_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.copy_backup(
-            parent="parent_value",
-            backup_id="backup_id_value",
-            source_backup="source_backup_value",
-            expire_time=timestamp_pb2.Timestamp(seconds=751),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].backup_id
-        mock_val = "backup_id_value"
-        assert arg == mock_val
-        arg = args[0].source_backup
-        mock_val = "source_backup_value"
-        assert arg == mock_val
-        assert TimestampRule().to_proto(args[0].expire_time) == timestamp_pb2.Timestamp(
-            seconds=751
-        )
-
-
-@pytest.mark.asyncio
-async def test_copy_backup_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.copy_backup(
-            backup.CopyBackupRequest(),
-            parent="parent_value",
-            backup_id="backup_id_value",
-            source_backup="source_backup_value",
-            expire_time=timestamp_pb2.Timestamp(seconds=751),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.GetBackupRequest,
-        dict,
-    ],
-)
-def test_get_backup(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.Backup(
-            database="database_value",
-            name="name_value",
-            size_bytes=1089,
-            freeable_size_bytes=2006,
-            exclusive_size_bytes=2168,
-            state=backup.Backup.State.CREATING,
-            referencing_databases=["referencing_databases_value"],
-            database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-            referencing_backups=["referencing_backups_value"],
-            backup_schedules=["backup_schedules_value"],
-            incremental_backup_chain_id="incremental_backup_chain_id_value",
-        )
-        response = client.get_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup.GetBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, backup.Backup)
-    assert response.database == "database_value"
-    assert response.name == "name_value"
-    assert response.size_bytes == 1089
-    assert response.freeable_size_bytes == 2006
-    assert response.exclusive_size_bytes == 2168
-    assert response.state == backup.Backup.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.backup_schedules == ["backup_schedules_value"]
-    assert response.incremental_backup_chain_id == "incremental_backup_chain_id_value"
-
-
-def test_get_backup_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup.GetBackupRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_backup(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup.GetBackupRequest(
-            name="name_value",
-        )
-
-
-def test_get_backup_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_backup] = mock_rpc
-        request = {}
-        client.get_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_backup_async_use_cached_wrapped_rpc(transport: str = "grpc_asyncio"):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_backup
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_backup
-        ] = mock_rpc
-
-        request = {}
-        await client.get_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_backup_async(
-    transport: str = "grpc_asyncio", request_type=backup.GetBackupRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.Backup(
-                database="database_value",
-                name="name_value",
-                size_bytes=1089,
-                freeable_size_bytes=2006,
-                exclusive_size_bytes=2168,
-                state=backup.Backup.State.CREATING,
-                referencing_databases=["referencing_databases_value"],
-                database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-                referencing_backups=["referencing_backups_value"],
-                backup_schedules=["backup_schedules_value"],
-                incremental_backup_chain_id="incremental_backup_chain_id_value",
-            )
-        )
-        response = await client.get_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup.GetBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, backup.Backup)
-    assert response.database == "database_value"
-    assert response.name == "name_value"
-    assert response.size_bytes == 1089
-    assert response.freeable_size_bytes == 2006
-    assert response.exclusive_size_bytes == 2168
-    assert response.state == backup.Backup.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.backup_schedules == ["backup_schedules_value"]
-    assert response.incremental_backup_chain_id == "incremental_backup_chain_id_value"
-
-
-@pytest.mark.asyncio
-async def test_get_backup_async_from_dict():
-    await test_get_backup_async(request_type=dict)
-
-
-def test_get_backup_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.GetBackupRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        call.return_value = backup.Backup()
-        client.get_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_backup_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.GetBackupRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(backup.Backup())
-        await client.get_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_get_backup_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.Backup()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_backup(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_get_backup_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_backup(
-            backup.GetBackupRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_backup_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.Backup()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(backup.Backup())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_backup(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_backup_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_backup(
-            backup.GetBackupRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup.UpdateBackupRequest,
-        dict,
-    ],
-)
-def test_update_backup(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup.Backup(
-            database="database_value",
-            name="name_value",
-            size_bytes=1089,
-            freeable_size_bytes=2006,
-            exclusive_size_bytes=2168,
-            state=gsad_backup.Backup.State.CREATING,
-            referencing_databases=["referencing_databases_value"],
-            database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-            referencing_backups=["referencing_backups_value"],
-            backup_schedules=["backup_schedules_value"],
-            incremental_backup_chain_id="incremental_backup_chain_id_value",
-        )
-        response = client.update_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup.UpdateBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup.Backup)
-    assert response.database == "database_value"
-    assert response.name == "name_value"
-    assert response.size_bytes == 1089
-    assert response.freeable_size_bytes == 2006
-    assert response.exclusive_size_bytes == 2168
-    assert response.state == gsad_backup.Backup.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.backup_schedules == ["backup_schedules_value"]
-    assert response.incremental_backup_chain_id == "incremental_backup_chain_id_value"
-
-
-def test_update_backup_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = gsad_backup.UpdateBackupRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.update_backup(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == gsad_backup.UpdateBackupRequest()
-
-
-def test_update_backup_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.update_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.update_backup] = mock_rpc
-        request = {}
-        client.update_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.update_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_backup_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.update_backup
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.update_backup
-        ] = mock_rpc
-
-        request = {}
-        await client.update_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.update_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_backup_async(
-    transport: str = "grpc_asyncio", request_type=gsad_backup.UpdateBackupRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup.Backup(
-                database="database_value",
-                name="name_value",
-                size_bytes=1089,
-                freeable_size_bytes=2006,
-                exclusive_size_bytes=2168,
-                state=gsad_backup.Backup.State.CREATING,
-                referencing_databases=["referencing_databases_value"],
-                database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-                referencing_backups=["referencing_backups_value"],
-                backup_schedules=["backup_schedules_value"],
-                incremental_backup_chain_id="incremental_backup_chain_id_value",
-            )
-        )
-        response = await client.update_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup.UpdateBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup.Backup)
-    assert response.database == "database_value"
-    assert response.name == "name_value"
-    assert response.size_bytes == 1089
-    assert response.freeable_size_bytes == 2006
-    assert response.exclusive_size_bytes == 2168
-    assert response.state == gsad_backup.Backup.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.backup_schedules == ["backup_schedules_value"]
-    assert response.incremental_backup_chain_id == "incremental_backup_chain_id_value"
-
-
-@pytest.mark.asyncio
-async def test_update_backup_async_from_dict():
-    await test_update_backup_async(request_type=dict)
-
-
-def test_update_backup_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup.UpdateBackupRequest()
-
-    request.backup.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        call.return_value = gsad_backup.Backup()
-        client.update_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "backup.name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_update_backup_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup.UpdateBackupRequest()
-
-    request.backup.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(gsad_backup.Backup())
-        await client.update_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "backup.name=name_value",
-    ) in kw["metadata"]
-
-
-def test_update_backup_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup.Backup()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.update_backup(
-            backup=gsad_backup.Backup(database="database_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].backup
-        mock_val = gsad_backup.Backup(database="database_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-def test_update_backup_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_backup(
-            gsad_backup.UpdateBackupRequest(),
-            backup=gsad_backup.Backup(database="database_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.asyncio
-async def test_update_backup_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup.Backup()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(gsad_backup.Backup())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.update_backup(
-            backup=gsad_backup.Backup(database="database_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].backup
-        mock_val = gsad_backup.Backup(database="database_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_update_backup_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.update_backup(
-            gsad_backup.UpdateBackupRequest(),
-            backup=gsad_backup.Backup(database="database_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.DeleteBackupRequest,
-        dict,
-    ],
-)
-def test_delete_backup(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup.DeleteBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_backup_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup.DeleteBackupRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.delete_backup(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup.DeleteBackupRequest(
-            name="name_value",
-        )
-
-
-def test_delete_backup_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.delete_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.delete_backup] = mock_rpc
-        request = {}
-        client.delete_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.delete_backup
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.delete_backup
-        ] = mock_rpc
-
-        request = {}
-        await client.delete_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.delete_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_async(
-    transport: str = "grpc_asyncio", request_type=backup.DeleteBackupRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup.DeleteBackupRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_async_from_dict():
-    await test_delete_backup_async(request_type=dict)
-
-
-def test_delete_backup_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.DeleteBackupRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        call.return_value = None
-        client.delete_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.DeleteBackupRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_delete_backup_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.delete_backup(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_delete_backup_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_backup(
-            backup.DeleteBackupRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.delete_backup(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.delete_backup(
-            backup.DeleteBackupRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.ListBackupsRequest,
-        dict,
-    ],
-)
-def test_list_backups(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.ListBackupsResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_backups(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup.ListBackupsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_backups_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup.ListBackupsRequest(
-        parent="parent_value",
-        filter="filter_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_backups(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup.ListBackupsRequest(
-            parent="parent_value",
-            filter="filter_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_backups_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_backups in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_backups] = mock_rpc
-        request = {}
-        client.list_backups(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_backups(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_backups_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_backups
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_backups
-        ] = mock_rpc
-
-        request = {}
-        await client.list_backups(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_backups(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_backups_async(
-    transport: str = "grpc_asyncio", request_type=backup.ListBackupsRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_backups(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup.ListBackupsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_backups_async_from_dict():
-    await test_list_backups_async(request_type=dict)
-
-
-def test_list_backups_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.ListBackupsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        call.return_value = backup.ListBackupsResponse()
-        client.list_backups(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_backups_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.ListBackupsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupsResponse()
-        )
-        await client.list_backups(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_backups_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.ListBackupsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_backups(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_backups_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_backups(
-            backup.ListBackupsRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_backups_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.ListBackupsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_backups(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_backups_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_backups(
-            backup.ListBackupsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_backups_pager(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupsResponse(
-                backups=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_backups(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, backup.Backup) for i in results)
-
-
-def test_list_backups_pages(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupsResponse(
-                backups=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_backups(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_backups_async_pager():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backups), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupsResponse(
-                backups=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_backups(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, backup.Backup) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_backups_async_pages():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backups), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupsResponse(
-                backups=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_backups(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.RestoreDatabaseRequest,
-        dict,
-    ],
-)
-def test_restore_database(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.restore_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.RestoreDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_restore_database_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.RestoreDatabaseRequest(
-        parent="parent_value",
-        database_id="database_id_value",
-        backup="backup_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.restore_database(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.RestoreDatabaseRequest(
-            parent="parent_value",
-            database_id="database_id_value",
-            backup="backup_value",
-        )
-
-
-def test_restore_database_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.restore_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.restore_database
-        ] = mock_rpc
-        request = {}
-        client.restore_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.restore_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_restore_database_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.restore_database
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.restore_database
-        ] = mock_rpc
-
-        request = {}
-        await client.restore_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.restore_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_restore_database_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.RestoreDatabaseRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.restore_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.RestoreDatabaseRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_restore_database_async_from_dict():
-    await test_restore_database_async(request_type=dict)
-
-
-def test_restore_database_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.RestoreDatabaseRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.restore_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_restore_database_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.RestoreDatabaseRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.restore_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_restore_database_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.restore_database(
-            parent="parent_value",
-            database_id="database_id_value",
-            backup="backup_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].database_id
-        mock_val = "database_id_value"
-        assert arg == mock_val
-        assert args[0].backup == "backup_value"
-
-
-def test_restore_database_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.restore_database(
-            spanner_database_admin.RestoreDatabaseRequest(),
-            parent="parent_value",
-            database_id="database_id_value",
-            backup="backup_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_restore_database_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.restore_database(
-            parent="parent_value",
-            database_id="database_id_value",
-            backup="backup_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].database_id
-        mock_val = "database_id_value"
-        assert arg == mock_val
-        assert args[0].backup == "backup_value"
-
-
-@pytest.mark.asyncio
-async def test_restore_database_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.restore_database(
-            spanner_database_admin.RestoreDatabaseRequest(),
-            parent="parent_value",
-            database_id="database_id_value",
-            backup="backup_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.ListDatabaseOperationsRequest,
-        dict,
-    ],
-)
-def test_list_database_operations(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabaseOperationsResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_database_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.ListDatabaseOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabaseOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_database_operations_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.ListDatabaseOperationsRequest(
-        parent="parent_value",
-        filter="filter_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_database_operations(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.ListDatabaseOperationsRequest(
-            parent="parent_value",
-            filter="filter_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_database_operations_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_database_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_database_operations
-        ] = mock_rpc
-        request = {}
-        client.list_database_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_database_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_database_operations
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_database_operations
-        ] = mock_rpc
-
-        request = {}
-        await client.list_database_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_database_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.ListDatabaseOperationsRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_database_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.ListDatabaseOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabaseOperationsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_async_from_dict():
-    await test_list_database_operations_async(request_type=dict)
-
-
-def test_list_database_operations_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.ListDatabaseOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        call.return_value = spanner_database_admin.ListDatabaseOperationsResponse()
-        client.list_database_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.ListDatabaseOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseOperationsResponse()
-        )
-        await client.list_database_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_database_operations_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabaseOperationsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_database_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_database_operations_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_database_operations(
-            spanner_database_admin.ListDatabaseOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabaseOperationsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseOperationsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_database_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_database_operations(
-            spanner_database_admin.ListDatabaseOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_database_operations_pager(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_database_operations(
-            request={}, retry=retry, timeout=timeout
-        )
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-
-def test_list_database_operations_pages(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_database_operations(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_async_pager():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_database_operations(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_database_operations_async_pages():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_database_operations(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.ListBackupOperationsRequest,
-        dict,
-    ],
-)
-def test_list_backup_operations(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.ListBackupOperationsResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_backup_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup.ListBackupOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_backup_operations_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup.ListBackupOperationsRequest(
-        parent="parent_value",
-        filter="filter_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_backup_operations(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup.ListBackupOperationsRequest(
-            parent="parent_value",
-            filter="filter_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_backup_operations_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_backup_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_backup_operations
-        ] = mock_rpc
-        request = {}
-        client.list_backup_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_backup_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_backup_operations
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_backup_operations
-        ] = mock_rpc
-
-        request = {}
-        await client.list_backup_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_backup_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_async(
-    transport: str = "grpc_asyncio", request_type=backup.ListBackupOperationsRequest
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupOperationsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_backup_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup.ListBackupOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupOperationsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_async_from_dict():
-    await test_list_backup_operations_async(request_type=dict)
-
-
-def test_list_backup_operations_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.ListBackupOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        call.return_value = backup.ListBackupOperationsResponse()
-        client.list_backup_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup.ListBackupOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupOperationsResponse()
-        )
-        await client.list_backup_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_backup_operations_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.ListBackupOperationsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_backup_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_backup_operations_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_backup_operations(
-            backup.ListBackupOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup.ListBackupOperationsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupOperationsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_backup_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_backup_operations(
-            backup.ListBackupOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_backup_operations_pager(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_backup_operations(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-
-def test_list_backup_operations_pages(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_backup_operations(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_async_pager():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_backup_operations(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_backup_operations_async_pages():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_backup_operations(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.ListDatabaseRolesRequest,
-        dict,
-    ],
-)
-def test_list_database_roles(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabaseRolesResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_database_roles(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.ListDatabaseRolesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabaseRolesPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_database_roles_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.ListDatabaseRolesRequest(
-        parent="parent_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_database_roles(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.ListDatabaseRolesRequest(
-            parent="parent_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_database_roles_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_database_roles in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_database_roles
-        ] = mock_rpc
-        request = {}
-        client.list_database_roles(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_database_roles(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_database_roles
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_database_roles
-        ] = mock_rpc
-
-        request = {}
-        await client.list_database_roles(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_database_roles(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.ListDatabaseRolesRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseRolesResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_database_roles(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.ListDatabaseRolesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabaseRolesAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_async_from_dict():
-    await test_list_database_roles_async(request_type=dict)
-
-
-def test_list_database_roles_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.ListDatabaseRolesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        call.return_value = spanner_database_admin.ListDatabaseRolesResponse()
-        client.list_database_roles(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.ListDatabaseRolesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseRolesResponse()
-        )
-        await client.list_database_roles(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_database_roles_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabaseRolesResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_database_roles(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_database_roles_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_database_roles(
-            spanner_database_admin.ListDatabaseRolesRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.ListDatabaseRolesResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseRolesResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_database_roles(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_database_roles(
-            spanner_database_admin.ListDatabaseRolesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_database_roles_pager(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_database_roles(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner_database_admin.DatabaseRole) for i in results)
-
-
-def test_list_database_roles_pages(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_database_roles(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_async_pager():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_database_roles(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(
-            isinstance(i, spanner_database_admin.DatabaseRole) for i in responses
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_database_roles_async_pages():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_database_roles(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.AddSplitPointsRequest,
-        dict,
-    ],
-)
-def test_add_split_points(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.AddSplitPointsResponse()
-        response = client.add_split_points(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.AddSplitPointsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.AddSplitPointsResponse)
-
-
-def test_add_split_points_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.AddSplitPointsRequest(
-        database="database_value",
-        initiator="initiator_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.add_split_points(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.AddSplitPointsRequest(
-            database="database_value",
-            initiator="initiator_value",
-        )
-
-
-def test_add_split_points_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.add_split_points in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.add_split_points
-        ] = mock_rpc
-        request = {}
-        client.add_split_points(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.add_split_points(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_add_split_points_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.add_split_points
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.add_split_points
-        ] = mock_rpc
-
-        request = {}
-        await client.add_split_points(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.add_split_points(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_add_split_points_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.AddSplitPointsRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.AddSplitPointsResponse()
-        )
-        response = await client.add_split_points(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.AddSplitPointsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.AddSplitPointsResponse)
-
-
-@pytest.mark.asyncio
-async def test_add_split_points_async_from_dict():
-    await test_add_split_points_async(request_type=dict)
-
-
-def test_add_split_points_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.AddSplitPointsRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        call.return_value = spanner_database_admin.AddSplitPointsResponse()
-        client.add_split_points(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_add_split_points_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_database_admin.AddSplitPointsRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.AddSplitPointsResponse()
-        )
-        await client.add_split_points(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-def test_add_split_points_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.AddSplitPointsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.add_split_points(
-            database="database_value",
-            split_points=[spanner_database_admin.SplitPoints(table="table_value")],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].split_points
-        mock_val = [spanner_database_admin.SplitPoints(table="table_value")]
-        assert arg == mock_val
-
-
-def test_add_split_points_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.add_split_points(
-            spanner_database_admin.AddSplitPointsRequest(),
-            database="database_value",
-            split_points=[spanner_database_admin.SplitPoints(table="table_value")],
-        )
-
-
-@pytest.mark.asyncio
-async def test_add_split_points_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_database_admin.AddSplitPointsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.AddSplitPointsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.add_split_points(
-            database="database_value",
-            split_points=[spanner_database_admin.SplitPoints(table="table_value")],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].split_points
-        mock_val = [spanner_database_admin.SplitPoints(table="table_value")]
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_add_split_points_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.add_split_points(
-            spanner_database_admin.AddSplitPointsRequest(),
-            database="database_value",
-            split_points=[spanner_database_admin.SplitPoints(table="table_value")],
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup_schedule.CreateBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_create_backup_schedule(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup_schedule.BackupSchedule(
-            name="name_value",
-        )
-        response = client.create_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup_schedule.CreateBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-def test_create_backup_schedule_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = gsad_backup_schedule.CreateBackupScheduleRequest(
-        parent="parent_value",
-        backup_schedule_id="backup_schedule_id_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.create_backup_schedule(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == gsad_backup_schedule.CreateBackupScheduleRequest(
-            parent="parent_value",
-            backup_schedule_id="backup_schedule_id_value",
-        )
-
-
-def test_create_backup_schedule_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.create_backup_schedule
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.create_backup_schedule
-        ] = mock_rpc
-        request = {}
-        client.create_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.create_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_backup_schedule_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.create_backup_schedule
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.create_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        await client.create_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.create_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_backup_schedule_async(
-    transport: str = "grpc_asyncio",
-    request_type=gsad_backup_schedule.CreateBackupScheduleRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule(
-                name="name_value",
-            )
-        )
-        response = await client.create_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup_schedule.CreateBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-@pytest.mark.asyncio
-async def test_create_backup_schedule_async_from_dict():
-    await test_create_backup_schedule_async(request_type=dict)
-
-
-def test_create_backup_schedule_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup_schedule.CreateBackupScheduleRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-        client.create_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_create_backup_schedule_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup_schedule.CreateBackupScheduleRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule()
-        )
-        await client.create_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_create_backup_schedule_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.create_backup_schedule(
-            parent="parent_value",
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            backup_schedule_id="backup_schedule_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].backup_schedule
-        mock_val = gsad_backup_schedule.BackupSchedule(name="name_value")
-        assert arg == mock_val
-        arg = args[0].backup_schedule_id
-        mock_val = "backup_schedule_id_value"
-        assert arg == mock_val
-
-
-def test_create_backup_schedule_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_backup_schedule(
-            gsad_backup_schedule.CreateBackupScheduleRequest(),
-            parent="parent_value",
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            backup_schedule_id="backup_schedule_id_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_create_backup_schedule_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.create_backup_schedule(
-            parent="parent_value",
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            backup_schedule_id="backup_schedule_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].backup_schedule
-        mock_val = gsad_backup_schedule.BackupSchedule(name="name_value")
-        assert arg == mock_val
-        arg = args[0].backup_schedule_id
-        mock_val = "backup_schedule_id_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_create_backup_schedule_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.create_backup_schedule(
-            gsad_backup_schedule.CreateBackupScheduleRequest(),
-            parent="parent_value",
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            backup_schedule_id="backup_schedule_id_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup_schedule.GetBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_get_backup_schedule(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup_schedule.BackupSchedule(
-            name="name_value",
-        )
-        response = client.get_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup_schedule.GetBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-def test_get_backup_schedule_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup_schedule.GetBackupScheduleRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_backup_schedule(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup_schedule.GetBackupScheduleRequest(
-            name="name_value",
-        )
-
-
-def test_get_backup_schedule_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.get_backup_schedule in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_backup_schedule
-        ] = mock_rpc
-        request = {}
-        client.get_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_backup_schedule_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_backup_schedule
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        await client.get_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_backup_schedule_async(
-    transport: str = "grpc_asyncio",
-    request_type=backup_schedule.GetBackupScheduleRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.BackupSchedule(
-                name="name_value",
-            )
-        )
-        response = await client.get_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup_schedule.GetBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-@pytest.mark.asyncio
-async def test_get_backup_schedule_async_from_dict():
-    await test_get_backup_schedule_async(request_type=dict)
-
-
-def test_get_backup_schedule_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup_schedule.GetBackupScheduleRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = backup_schedule.BackupSchedule()
-        client.get_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_backup_schedule_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup_schedule.GetBackupScheduleRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.BackupSchedule()
-        )
-        await client.get_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_get_backup_schedule_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup_schedule.BackupSchedule()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_backup_schedule(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_get_backup_schedule_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_backup_schedule(
-            backup_schedule.GetBackupScheduleRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_backup_schedule_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup_schedule.BackupSchedule()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.BackupSchedule()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_backup_schedule(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_backup_schedule_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_backup_schedule(
-            backup_schedule.GetBackupScheduleRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup_schedule.UpdateBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_update_backup_schedule(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup_schedule.BackupSchedule(
-            name="name_value",
-        )
-        response = client.update_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup_schedule.UpdateBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-def test_update_backup_schedule_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = gsad_backup_schedule.UpdateBackupScheduleRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.update_backup_schedule(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == gsad_backup_schedule.UpdateBackupScheduleRequest()
-
-
-def test_update_backup_schedule_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_backup_schedule
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_backup_schedule
-        ] = mock_rpc
-        request = {}
-        client.update_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.update_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_backup_schedule_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.update_backup_schedule
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.update_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        await client.update_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.update_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_backup_schedule_async(
-    transport: str = "grpc_asyncio",
-    request_type=gsad_backup_schedule.UpdateBackupScheduleRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule(
-                name="name_value",
-            )
-        )
-        response = await client.update_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = gsad_backup_schedule.UpdateBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-@pytest.mark.asyncio
-async def test_update_backup_schedule_async_from_dict():
-    await test_update_backup_schedule_async(request_type=dict)
-
-
-def test_update_backup_schedule_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup_schedule.UpdateBackupScheduleRequest()
-
-    request.backup_schedule.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-        client.update_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "backup_schedule.name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_update_backup_schedule_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = gsad_backup_schedule.UpdateBackupScheduleRequest()
-
-    request.backup_schedule.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule()
-        )
-        await client.update_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "backup_schedule.name=name_value",
-    ) in kw["metadata"]
-
-
-def test_update_backup_schedule_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.update_backup_schedule(
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].backup_schedule
-        mock_val = gsad_backup_schedule.BackupSchedule(name="name_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-def test_update_backup_schedule_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_backup_schedule(
-            gsad_backup_schedule.UpdateBackupScheduleRequest(),
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.asyncio
-async def test_update_backup_schedule_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.update_backup_schedule(
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].backup_schedule
-        mock_val = gsad_backup_schedule.BackupSchedule(name="name_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_update_backup_schedule_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.update_backup_schedule(
-            gsad_backup_schedule.UpdateBackupScheduleRequest(),
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup_schedule.DeleteBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_delete_backup_schedule(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup_schedule.DeleteBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_backup_schedule_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup_schedule.DeleteBackupScheduleRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.delete_backup_schedule(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup_schedule.DeleteBackupScheduleRequest(
-            name="name_value",
-        )
-
-
-def test_delete_backup_schedule_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.delete_backup_schedule
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.delete_backup_schedule
-        ] = mock_rpc
-        request = {}
-        client.delete_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_schedule_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.delete_backup_schedule
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.delete_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        await client.delete_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.delete_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_schedule_async(
-    transport: str = "grpc_asyncio",
-    request_type=backup_schedule.DeleteBackupScheduleRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup_schedule.DeleteBackupScheduleRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_schedule_async_from_dict():
-    await test_delete_backup_schedule_async(request_type=dict)
-
-
-def test_delete_backup_schedule_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup_schedule.DeleteBackupScheduleRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = None
-        client.delete_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_schedule_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup_schedule.DeleteBackupScheduleRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_delete_backup_schedule_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.delete_backup_schedule(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_delete_backup_schedule_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_backup_schedule(
-            backup_schedule.DeleteBackupScheduleRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_schedule_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.delete_backup_schedule(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_delete_backup_schedule_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.delete_backup_schedule(
-            backup_schedule.DeleteBackupScheduleRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup_schedule.ListBackupSchedulesRequest,
-        dict,
-    ],
-)
-def test_list_backup_schedules(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup_schedule.ListBackupSchedulesResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_backup_schedules(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = backup_schedule.ListBackupSchedulesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupSchedulesPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_backup_schedules_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = backup_schedule.ListBackupSchedulesRequest(
-        parent="parent_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_backup_schedules(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == backup_schedule.ListBackupSchedulesRequest(
-            parent="parent_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_backup_schedules_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_backup_schedules
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_backup_schedules
-        ] = mock_rpc
-        request = {}
-        client.list_backup_schedules(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_backup_schedules(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_backup_schedules
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_backup_schedules
-        ] = mock_rpc
-
-        request = {}
-        await client.list_backup_schedules(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_backup_schedules(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_async(
-    transport: str = "grpc_asyncio",
-    request_type=backup_schedule.ListBackupSchedulesRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.ListBackupSchedulesResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_backup_schedules(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = backup_schedule.ListBackupSchedulesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupSchedulesAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_async_from_dict():
-    await test_list_backup_schedules_async(request_type=dict)
-
-
-def test_list_backup_schedules_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup_schedule.ListBackupSchedulesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        call.return_value = backup_schedule.ListBackupSchedulesResponse()
-        client.list_backup_schedules(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = backup_schedule.ListBackupSchedulesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.ListBackupSchedulesResponse()
-        )
-        await client.list_backup_schedules(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_backup_schedules_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup_schedule.ListBackupSchedulesResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_backup_schedules(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_backup_schedules_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_backup_schedules(
-            backup_schedule.ListBackupSchedulesRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = backup_schedule.ListBackupSchedulesResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.ListBackupSchedulesResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_backup_schedules(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_backup_schedules(
-            backup_schedule.ListBackupSchedulesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_backup_schedules_pager(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="abc",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[],
-                next_page_token="def",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_backup_schedules(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, backup_schedule.BackupSchedule) for i in results)
-
-
-def test_list_backup_schedules_pages(transport_name: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="abc",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[],
-                next_page_token="def",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_backup_schedules(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_async_pager():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="abc",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[],
-                next_page_token="def",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_backup_schedules(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, backup_schedule.BackupSchedule) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_backup_schedules_async_pages():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="abc",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[],
-                next_page_token="def",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_backup_schedules(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.InternalUpdateGraphOperationRequest,
-        dict,
-    ],
-)
-def test_internal_update_graph_operation(request_type, transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_database_admin.InternalUpdateGraphOperationResponse()
-        )
-        response = client.internal_update_graph_operation(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.InternalUpdateGraphOperationRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(
-        response, spanner_database_admin.InternalUpdateGraphOperationResponse
-    )
-
-
-def test_internal_update_graph_operation_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_database_admin.InternalUpdateGraphOperationRequest(
-        database="database_value",
-        operation_id="operation_id_value",
-        vm_identity_token="vm_identity_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.internal_update_graph_operation(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_database_admin.InternalUpdateGraphOperationRequest(
-            database="database_value",
-            operation_id="operation_id_value",
-            vm_identity_token="vm_identity_token_value",
-        )
-
-
-def test_internal_update_graph_operation_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.internal_update_graph_operation
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.internal_update_graph_operation
-        ] = mock_rpc
-        request = {}
-        client.internal_update_graph_operation(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.internal_update_graph_operation(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_internal_update_graph_operation_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = DatabaseAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.internal_update_graph_operation
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.internal_update_graph_operation
-        ] = mock_rpc
-
-        request = {}
-        await client.internal_update_graph_operation(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.internal_update_graph_operation(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_internal_update_graph_operation_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_database_admin.InternalUpdateGraphOperationRequest,
-):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.InternalUpdateGraphOperationResponse()
-        )
-        response = await client.internal_update_graph_operation(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_database_admin.InternalUpdateGraphOperationRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(
-        response, spanner_database_admin.InternalUpdateGraphOperationResponse
-    )
-
-
-@pytest.mark.asyncio
-async def test_internal_update_graph_operation_async_from_dict():
-    await test_internal_update_graph_operation_async(request_type=dict)
-
-
-def test_internal_update_graph_operation_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_database_admin.InternalUpdateGraphOperationResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.internal_update_graph_operation(
-            database="database_value",
-            operation_id="operation_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].operation_id
-        mock_val = "operation_id_value"
-        assert arg == mock_val
-
-
-def test_internal_update_graph_operation_flattened_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.internal_update_graph_operation(
-            spanner_database_admin.InternalUpdateGraphOperationRequest(),
-            database="database_value",
-            operation_id="operation_id_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_internal_update_graph_operation_flattened_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_database_admin.InternalUpdateGraphOperationResponse()
-        )
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.InternalUpdateGraphOperationResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.internal_update_graph_operation(
-            database="database_value",
-            operation_id="operation_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].operation_id
-        mock_val = "operation_id_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_internal_update_graph_operation_flattened_error_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.internal_update_graph_operation(
-            spanner_database_admin.InternalUpdateGraphOperationRequest(),
-            database="database_value",
-            operation_id="operation_id_value",
-        )
-
-
-def test_list_databases_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_databases in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_databases] = mock_rpc
-
-        request = {}
-        client.list_databases(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_databases(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_databases_rest_required_fields(
-    request_type=spanner_database_admin.ListDatabasesRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_databases._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_databases._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_database_admin.ListDatabasesResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_database_admin.ListDatabasesResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_databases(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_databases_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_databases._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_databases_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.ListDatabasesResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.ListDatabasesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_databases(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/databases" % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_databases_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_databases(
-            spanner_database_admin.ListDatabasesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_databases_rest_pager(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabasesResponse(
-                databases=[
-                    spanner_database_admin.Database(),
-                    spanner_database_admin.Database(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_database_admin.ListDatabasesResponse.to_json(x) for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        pager = client.list_databases(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner_database_admin.Database) for i in results)
-
-        pages = list(client.list_databases(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_create_database_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_database] = mock_rpc
-
-        request = {}
-        client.create_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_create_database_rest_required_fields(
-    request_type=spanner_database_admin.CreateDatabaseRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["create_statement"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["createStatement"] = "create_statement_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "createStatement" in jsonified_request
-    assert jsonified_request["createStatement"] == "create_statement_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.create_database(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_create_database_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.create_database._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "parent",
-                "createStatement",
-            )
-        )
-    )
-
-
-def test_create_database_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            create_statement="create_statement_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.create_database(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/databases" % client.transport._host,
-            args[1],
-        )
-
-
-def test_create_database_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_database(
-            spanner_database_admin.CreateDatabaseRequest(),
-            parent="parent_value",
-            create_statement="create_statement_value",
-        )
-
-
-def test_get_database_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_database] = mock_rpc
-
-        request = {}
-        client.get_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_database_rest_required_fields(
-    request_type=spanner_database_admin.GetDatabaseRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_database_admin.Database()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_database_admin.Database.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_database(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_database_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_database._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_get_database_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.Database()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "name": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.Database.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_database(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/databases/*}" % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_database_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_database(
-            spanner_database_admin.GetDatabaseRequest(),
-            name="name_value",
-        )
-
-
-def test_update_database_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.update_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.update_database] = mock_rpc
-
-        request = {}
-        client.update_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_update_database_rest_required_fields(
-    request_type=spanner_database_admin.UpdateDatabaseRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_database._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(("update_mask",))
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "patch",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.update_database(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_update_database_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.update_database._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(("updateMask",))
-        & set(
-            (
-                "database",
-                "updateMask",
-            )
-        )
-    )
-
-
-def test_update_database_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": {"name": "projects/sample1/instances/sample2/databases/sample3"}
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database=spanner_database_admin.Database(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.update_database(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database.name=projects/*/instances/*/databases/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_update_database_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_database(
-            spanner_database_admin.UpdateDatabaseRequest(),
-            database=spanner_database_admin.Database(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-def test_update_database_ddl_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_database_ddl in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_database_ddl
-        ] = mock_rpc
-
-        request = {}
-        client.update_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_database_ddl(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_update_database_ddl_rest_required_fields(
-    request_type=spanner_database_admin.UpdateDatabaseDdlRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["database"] = ""
-    request_init["statements"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_database_ddl._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["database"] = "database_value"
-    jsonified_request["statements"] = "statements_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_database_ddl._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "database" in jsonified_request
-    assert jsonified_request["database"] == "database_value"
-    assert "statements" in jsonified_request
-    assert jsonified_request["statements"] == "statements_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "patch",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.update_database_ddl(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_update_database_ddl_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.update_database_ddl._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "database",
-                "statements",
-            )
-        )
-    )
-
-
-def test_update_database_ddl_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database="database_value",
-            statements=["statements_value"],
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.update_database_ddl(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database=projects/*/instances/*/databases/*}/ddl"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_update_database_ddl_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_database_ddl(
-            spanner_database_admin.UpdateDatabaseDdlRequest(),
-            database="database_value",
-            statements=["statements_value"],
-        )
-
-
-def test_drop_database_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.drop_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.drop_database] = mock_rpc
-
-        request = {}
-        client.drop_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.drop_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_drop_database_rest_required_fields(
-    request_type=spanner_database_admin.DropDatabaseRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["database"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).drop_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["database"] = "database_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).drop_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "database" in jsonified_request
-    assert jsonified_request["database"] == "database_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "delete",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.drop_database(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_drop_database_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.drop_database._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("database",)))
-
-
-def test_drop_database_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database="database_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.drop_database(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database=projects/*/instances/*/databases/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_drop_database_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.drop_database(
-            spanner_database_admin.DropDatabaseRequest(),
-            database="database_value",
-        )
-
-
-def test_get_database_ddl_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_database_ddl in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_database_ddl
-        ] = mock_rpc
-
-        request = {}
-        client.get_database_ddl(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_database_ddl(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_database_ddl_rest_required_fields(
-    request_type=spanner_database_admin.GetDatabaseDdlRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["database"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_database_ddl._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["database"] = "database_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_database_ddl._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "database" in jsonified_request
-    assert jsonified_request["database"] == "database_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_database_admin.GetDatabaseDdlResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_database_admin.GetDatabaseDdlResponse.pb(
-                return_value
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_database_ddl(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_database_ddl_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_database_ddl._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("database",)))
-
-
-def test_get_database_ddl_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.GetDatabaseDdlResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database="database_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.GetDatabaseDdlResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_database_ddl(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database=projects/*/instances/*/databases/*}/ddl"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_database_ddl_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_database_ddl(
-            spanner_database_admin.GetDatabaseDdlRequest(),
-            database="database_value",
-        )
-
-
-def test_set_iam_policy_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.set_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.set_iam_policy] = mock_rpc
-
-        request = {}
-        client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.set_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_set_iam_policy_rest_required_fields(
-    request_type=iam_policy_pb2.SetIamPolicyRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["resource"] = ""
-    request = request_type(**request_init)
-    pb_request = request
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).set_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["resource"] = "resource_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).set_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "resource" in jsonified_request
-    assert jsonified_request["resource"] == "resource_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = policy_pb2.Policy()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.set_iam_policy(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_set_iam_policy_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.set_iam_policy._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "resource",
-                "policy",
-            )
-        )
-    )
-
-
-def test_set_iam_policy_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "resource": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            resource="resource_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.set_iam_policy(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{resource=projects/*/instances/*/databases/*}:setIamPolicy"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_set_iam_policy_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.set_iam_policy(
-            iam_policy_pb2.SetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-def test_get_iam_policy_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_iam_policy] = mock_rpc
-
-        request = {}
-        client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_iam_policy_rest_required_fields(
-    request_type=iam_policy_pb2.GetIamPolicyRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["resource"] = ""
-    request = request_type(**request_init)
-    pb_request = request
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["resource"] = "resource_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "resource" in jsonified_request
-    assert jsonified_request["resource"] == "resource_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = policy_pb2.Policy()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_iam_policy(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_iam_policy_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_iam_policy._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("resource",)))
-
-
-def test_get_iam_policy_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "resource": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            resource="resource_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_iam_policy(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{resource=projects/*/instances/*/databases/*}:getIamPolicy"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_iam_policy_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_iam_policy(
-            iam_policy_pb2.GetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-def test_test_iam_permissions_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.test_iam_permissions in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.test_iam_permissions
-        ] = mock_rpc
-
-        request = {}
-        client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.test_iam_permissions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_test_iam_permissions_rest_required_fields(
-    request_type=iam_policy_pb2.TestIamPermissionsRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["resource"] = ""
-    request_init["permissions"] = ""
-    request = request_type(**request_init)
-    pb_request = request
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).test_iam_permissions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["resource"] = "resource_value"
-    jsonified_request["permissions"] = "permissions_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).test_iam_permissions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "resource" in jsonified_request
-    assert jsonified_request["resource"] == "resource_value"
-    assert "permissions" in jsonified_request
-    assert jsonified_request["permissions"] == "permissions_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = iam_policy_pb2.TestIamPermissionsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.test_iam_permissions(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_test_iam_permissions_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.test_iam_permissions._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "resource",
-                "permissions",
-            )
-        )
-    )
-
-
-def test_test_iam_permissions_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = iam_policy_pb2.TestIamPermissionsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "resource": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.test_iam_permissions(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{resource=projects/*/instances/*/databases/*}:testIamPermissions"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_test_iam_permissions_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.test_iam_permissions(
-            iam_policy_pb2.TestIamPermissionsRequest(),
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-
-def test_create_backup_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_backup] = mock_rpc
-
-        request = {}
-        client.create_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_create_backup_rest_required_fields(
-    request_type=gsad_backup.CreateBackupRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["backup_id"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-    assert "backupId" not in jsonified_request
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-    assert "backupId" in jsonified_request
-    assert jsonified_request["backupId"] == request_init["backup_id"]
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["backupId"] = "backup_id_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_backup._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "backup_id",
-            "encryption_config",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "backupId" in jsonified_request
-    assert jsonified_request["backupId"] == "backup_id_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.create_backup(request)
-
-            expected_params = [
-                (
-                    "backupId",
-                    "",
-                ),
-                ("$alt", "json;enum-encoding=int"),
-            ]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_create_backup_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.create_backup._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "backupId",
-                "encryptionConfig",
-            )
-        )
-        & set(
-            (
-                "parent",
-                "backupId",
-                "backup",
-            )
-        )
-    )
-
-
-def test_create_backup_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            backup=gsad_backup.Backup(database="database_value"),
-            backup_id="backup_id_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.create_backup(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/backups" % client.transport._host,
-            args[1],
-        )
-
-
-def test_create_backup_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_backup(
-            gsad_backup.CreateBackupRequest(),
-            parent="parent_value",
-            backup=gsad_backup.Backup(database="database_value"),
-            backup_id="backup_id_value",
-        )
-
-
-def test_copy_backup_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.copy_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.copy_backup] = mock_rpc
-
-        request = {}
-        client.copy_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.copy_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_copy_backup_rest_required_fields(request_type=backup.CopyBackupRequest):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["backup_id"] = ""
-    request_init["source_backup"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).copy_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["backupId"] = "backup_id_value"
-    jsonified_request["sourceBackup"] = "source_backup_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).copy_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "backupId" in jsonified_request
-    assert jsonified_request["backupId"] == "backup_id_value"
-    assert "sourceBackup" in jsonified_request
-    assert jsonified_request["sourceBackup"] == "source_backup_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.copy_backup(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_copy_backup_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.copy_backup._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "parent",
-                "backupId",
-                "sourceBackup",
-                "expireTime",
-            )
-        )
-    )
-
-
-def test_copy_backup_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            backup_id="backup_id_value",
-            source_backup="source_backup_value",
-            expire_time=timestamp_pb2.Timestamp(seconds=751),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.copy_backup(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/backups:copy"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_copy_backup_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.copy_backup(
-            backup.CopyBackupRequest(),
-            parent="parent_value",
-            backup_id="backup_id_value",
-            source_backup="source_backup_value",
-            expire_time=timestamp_pb2.Timestamp(seconds=751),
-        )
-
-
-def test_get_backup_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_backup] = mock_rpc
-
-        request = {}
-        client.get_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_backup_rest_required_fields(request_type=backup.GetBackupRequest):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = backup.Backup()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = backup.Backup.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_backup(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_backup_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_backup._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_get_backup_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup.Backup()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"name": "projects/sample1/instances/sample2/backups/sample3"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = backup.Backup.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_backup(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/backups/*}" % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_backup_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_backup(
-            backup.GetBackupRequest(),
-            name="name_value",
-        )
-
-
-def test_update_backup_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.update_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.update_backup] = mock_rpc
-
-        request = {}
-        client.update_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.update_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_update_backup_rest_required_fields(
-    request_type=gsad_backup.UpdateBackupRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_backup._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(("update_mask",))
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = gsad_backup.Backup()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "patch",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = gsad_backup.Backup.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.update_backup(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_update_backup_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.update_backup._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(("updateMask",))
-        & set(
-            (
-                "backup",
-                "updateMask",
-            )
-        )
-    )
-
-
-def test_update_backup_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = gsad_backup.Backup()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "backup": {"name": "projects/sample1/instances/sample2/backups/sample3"}
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            backup=gsad_backup.Backup(database="database_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = gsad_backup.Backup.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.update_backup(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{backup.name=projects/*/instances/*/backups/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_update_backup_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_backup(
-            gsad_backup.UpdateBackupRequest(),
-            backup=gsad_backup.Backup(database="database_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-def test_delete_backup_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.delete_backup in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.delete_backup] = mock_rpc
-
-        request = {}
-        client.delete_backup(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_backup(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_delete_backup_rest_required_fields(request_type=backup.DeleteBackupRequest):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_backup._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "delete",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.delete_backup(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_delete_backup_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.delete_backup._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_delete_backup_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"name": "projects/sample1/instances/sample2/backups/sample3"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.delete_backup(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/backups/*}" % client.transport._host,
-            args[1],
-        )
-
-
-def test_delete_backup_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_backup(
-            backup.DeleteBackupRequest(),
-            name="name_value",
-        )
-
-
-def test_list_backups_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_backups in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_backups] = mock_rpc
-
-        request = {}
-        client.list_backups(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_backups(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_backups_rest_required_fields(request_type=backup.ListBackupsRequest):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_backups._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_backups._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "filter",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = backup.ListBackupsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = backup.ListBackupsResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_backups(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_backups_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_backups._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "filter",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_backups_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup.ListBackupsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = backup.ListBackupsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_backups(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/backups" % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_backups_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_backups(
-            backup.ListBackupsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_backups_rest_pager(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupsResponse(
-                backups=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupsResponse(
-                backups=[
-                    backup.Backup(),
-                    backup.Backup(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(backup.ListBackupsResponse.to_json(x) for x in response)
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        pager = client.list_backups(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, backup.Backup) for i in results)
-
-        pages = list(client.list_backups(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_restore_database_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.restore_database in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.restore_database
-        ] = mock_rpc
-
-        request = {}
-        client.restore_database(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.restore_database(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_restore_database_rest_required_fields(
-    request_type=spanner_database_admin.RestoreDatabaseRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["database_id"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).restore_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["databaseId"] = "database_id_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).restore_database._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "databaseId" in jsonified_request
-    assert jsonified_request["databaseId"] == "database_id_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.restore_database(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_restore_database_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.restore_database._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "parent",
-                "databaseId",
-            )
-        )
-    )
-
-
-def test_restore_database_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            database_id="database_id_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.restore_database(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/databases:restore"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_restore_database_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.restore_database(
-            spanner_database_admin.RestoreDatabaseRequest(),
-            parent="parent_value",
-            database_id="database_id_value",
-            backup="backup_value",
-        )
-
-
-def test_list_database_operations_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_database_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_database_operations
-        ] = mock_rpc
-
-        request = {}
-        client.list_database_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_database_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_database_operations_rest_required_fields(
-    request_type=spanner_database_admin.ListDatabaseOperationsRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_database_operations._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_database_operations._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "filter",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_database_admin.ListDatabaseOperationsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_database_admin.ListDatabaseOperationsResponse.pb(
-                return_value
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_database_operations(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_database_operations_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_database_operations._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "filter",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_database_operations_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.ListDatabaseOperationsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.ListDatabaseOperationsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_database_operations(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/databaseOperations"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_database_operations_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_database_operations(
-            spanner_database_admin.ListDatabaseOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_database_operations_rest_pager(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_database_admin.ListDatabaseOperationsResponse.to_json(x)
-            for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        pager = client.list_database_operations(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-        pages = list(client.list_database_operations(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_list_backup_operations_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_backup_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_backup_operations
-        ] = mock_rpc
-
-        request = {}
-        client.list_backup_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_backup_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_backup_operations_rest_required_fields(
-    request_type=backup.ListBackupOperationsRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_backup_operations._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_backup_operations._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "filter",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = backup.ListBackupOperationsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = backup.ListBackupOperationsResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_backup_operations(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_backup_operations_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_backup_operations._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "filter",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_backup_operations_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup.ListBackupOperationsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = backup.ListBackupOperationsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_backup_operations(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/backupOperations"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_backup_operations_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_backup_operations(
-            backup.ListBackupOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_backup_operations_rest_pager(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup.ListBackupOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            backup.ListBackupOperationsResponse.to_json(x) for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        pager = client.list_backup_operations(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-        pages = list(client.list_backup_operations(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_list_database_roles_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_database_roles in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_database_roles
-        ] = mock_rpc
-
-        request = {}
-        client.list_database_roles(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_database_roles(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_database_roles_rest_required_fields(
-    request_type=spanner_database_admin.ListDatabaseRolesRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_database_roles._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_database_roles._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_database_admin.ListDatabaseRolesResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_database_admin.ListDatabaseRolesResponse.pb(
-                return_value
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_database_roles(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_database_roles_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_database_roles._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_database_roles_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.ListDatabaseRolesResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "parent": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.ListDatabaseRolesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_database_roles(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*/databases/*}/databaseRoles"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_database_roles_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_database_roles(
-            spanner_database_admin.ListDatabaseRolesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_database_roles_rest_pager(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[],
-                next_page_token="def",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_database_admin.ListDatabaseRolesResponse(
-                database_roles=[
-                    spanner_database_admin.DatabaseRole(),
-                    spanner_database_admin.DatabaseRole(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_database_admin.ListDatabaseRolesResponse.to_json(x)
-            for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {
-            "parent": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        pager = client.list_database_roles(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner_database_admin.DatabaseRole) for i in results)
-
-        pages = list(client.list_database_roles(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_add_split_points_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.add_split_points in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.add_split_points
-        ] = mock_rpc
-
-        request = {}
-        client.add_split_points(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.add_split_points(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_add_split_points_rest_required_fields(
-    request_type=spanner_database_admin.AddSplitPointsRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["database"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).add_split_points._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["database"] = "database_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).add_split_points._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "database" in jsonified_request
-    assert jsonified_request["database"] == "database_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_database_admin.AddSplitPointsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_database_admin.AddSplitPointsResponse.pb(
-                return_value
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.add_split_points(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_add_split_points_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.add_split_points._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "database",
-                "splitPoints",
-            )
-        )
-    )
-
-
-def test_add_split_points_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.AddSplitPointsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database="database_value",
-            split_points=[spanner_database_admin.SplitPoints(table="table_value")],
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.AddSplitPointsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.add_split_points(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database=projects/*/instances/*/databases/*}:addSplitPoints"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_add_split_points_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.add_split_points(
-            spanner_database_admin.AddSplitPointsRequest(),
-            database="database_value",
-            split_points=[spanner_database_admin.SplitPoints(table="table_value")],
-        )
-
-
-def test_create_backup_schedule_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.create_backup_schedule
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.create_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        client.create_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.create_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_create_backup_schedule_rest_required_fields(
-    request_type=gsad_backup_schedule.CreateBackupScheduleRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["backup_schedule_id"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-    assert "backupScheduleId" not in jsonified_request
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_backup_schedule._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-    assert "backupScheduleId" in jsonified_request
-    assert jsonified_request["backupScheduleId"] == request_init["backup_schedule_id"]
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["backupScheduleId"] = "backup_schedule_id_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_backup_schedule._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(("backup_schedule_id",))
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "backupScheduleId" in jsonified_request
-    assert jsonified_request["backupScheduleId"] == "backup_schedule_id_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = gsad_backup_schedule.BackupSchedule()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = gsad_backup_schedule.BackupSchedule.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.create_backup_schedule(request)
-
-            expected_params = [
-                (
-                    "backupScheduleId",
-                    "",
-                ),
-                ("$alt", "json;enum-encoding=int"),
-            ]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_create_backup_schedule_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.create_backup_schedule._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(("backupScheduleId",))
-        & set(
-            (
-                "parent",
-                "backupScheduleId",
-                "backupSchedule",
-            )
-        )
-    )
-
-
-def test_create_backup_schedule_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = gsad_backup_schedule.BackupSchedule()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "parent": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            backup_schedule_id="backup_schedule_id_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = gsad_backup_schedule.BackupSchedule.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.create_backup_schedule(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*/databases/*}/backupSchedules"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_create_backup_schedule_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_backup_schedule(
-            gsad_backup_schedule.CreateBackupScheduleRequest(),
-            parent="parent_value",
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            backup_schedule_id="backup_schedule_id_value",
-        )
-
-
-def test_get_backup_schedule_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.get_backup_schedule in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        client.get_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_backup_schedule_rest_required_fields(
-    request_type=backup_schedule.GetBackupScheduleRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_backup_schedule._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_backup_schedule._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = backup_schedule.BackupSchedule()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = backup_schedule.BackupSchedule.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_backup_schedule(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_backup_schedule_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_backup_schedule._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_get_backup_schedule_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup_schedule.BackupSchedule()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = backup_schedule.BackupSchedule.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_backup_schedule(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/databases/*/backupSchedules/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_backup_schedule_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_backup_schedule(
-            backup_schedule.GetBackupScheduleRequest(),
-            name="name_value",
-        )
-
-
-def test_update_backup_schedule_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_backup_schedule
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        client.update_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.update_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_update_backup_schedule_rest_required_fields(
-    request_type=gsad_backup_schedule.UpdateBackupScheduleRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_backup_schedule._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_backup_schedule._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(("update_mask",))
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = gsad_backup_schedule.BackupSchedule()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "patch",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = gsad_backup_schedule.BackupSchedule.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.update_backup_schedule(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_update_backup_schedule_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.update_backup_schedule._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(("updateMask",))
-        & set(
-            (
-                "backupSchedule",
-                "updateMask",
-            )
-        )
-    )
-
-
-def test_update_backup_schedule_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = gsad_backup_schedule.BackupSchedule()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "backup_schedule": {
-                "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-            }
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = gsad_backup_schedule.BackupSchedule.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.update_backup_schedule(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{backup_schedule.name=projects/*/instances/*/databases/*/backupSchedules/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_update_backup_schedule_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_backup_schedule(
-            gsad_backup_schedule.UpdateBackupScheduleRequest(),
-            backup_schedule=gsad_backup_schedule.BackupSchedule(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-def test_delete_backup_schedule_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.delete_backup_schedule
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.delete_backup_schedule
-        ] = mock_rpc
-
-        request = {}
-        client.delete_backup_schedule(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_backup_schedule(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_delete_backup_schedule_rest_required_fields(
-    request_type=backup_schedule.DeleteBackupScheduleRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_backup_schedule._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_backup_schedule._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "delete",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.delete_backup_schedule(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_delete_backup_schedule_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.delete_backup_schedule._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_delete_backup_schedule_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.delete_backup_schedule(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/databases/*/backupSchedules/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_delete_backup_schedule_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_backup_schedule(
-            backup_schedule.DeleteBackupScheduleRequest(),
-            name="name_value",
-        )
-
-
-def test_list_backup_schedules_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_backup_schedules
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_backup_schedules
-        ] = mock_rpc
-
-        request = {}
-        client.list_backup_schedules(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_backup_schedules(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_backup_schedules_rest_required_fields(
-    request_type=backup_schedule.ListBackupSchedulesRequest,
-):
-    transport_class = transports.DatabaseAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_backup_schedules._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_backup_schedules._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = backup_schedule.ListBackupSchedulesResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = backup_schedule.ListBackupSchedulesResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_backup_schedules(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_backup_schedules_rest_unset_required_fields():
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_backup_schedules._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_backup_schedules_rest_flattened():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup_schedule.ListBackupSchedulesResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "parent": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = backup_schedule.ListBackupSchedulesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_backup_schedules(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*/databases/*}/backupSchedules"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_backup_schedules_rest_flattened_error(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_backup_schedules(
-            backup_schedule.ListBackupSchedulesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_backup_schedules_rest_pager(transport: str = "rest"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="abc",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[],
-                next_page_token="def",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                ],
-                next_page_token="ghi",
-            ),
-            backup_schedule.ListBackupSchedulesResponse(
-                backup_schedules=[
-                    backup_schedule.BackupSchedule(),
-                    backup_schedule.BackupSchedule(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            backup_schedule.ListBackupSchedulesResponse.to_json(x) for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {
-            "parent": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        pager = client.list_backup_schedules(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, backup_schedule.BackupSchedule) for i in results)
-
-        pages = list(client.list_backup_schedules(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_internal_update_graph_operation_rest_no_http_options():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = spanner_database_admin.InternalUpdateGraphOperationRequest()
-    with pytest.raises(RuntimeError):
-        client.internal_update_graph_operation(request)
-
-
-def test_internal_update_graph_operation_rest_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # Since a `google.api.http` annotation is required for using a rest transport
-    # method, this should error.
-    with pytest.raises(NotImplementedError) as not_implemented_error:
-        client.internal_update_graph_operation({})
-    assert (
-        "Method InternalUpdateGraphOperation is not available over REST transport"
-        in str(not_implemented_error.value)
-    )
-
-
-def test_credentials_transport_error():
-    # It is an error to provide credentials and a transport instance.
-    transport = transports.DatabaseAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport=transport,
-        )
-
-    # It is an error to provide a credentials file and a transport instance.
-    transport = transports.DatabaseAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = DatabaseAdminClient(
-            client_options={"credentials_file": "credentials.json"},
-            transport=transport,
-        )
-
-    # It is an error to provide an api_key and a transport instance.
-    transport = transports.DatabaseAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    options = client_options.ClientOptions()
-    options.api_key = "api_key"
-    with pytest.raises(ValueError):
-        client = DatabaseAdminClient(
-            client_options=options,
-            transport=transport,
-        )
-
-    # It is an error to provide an api_key and a credential.
-    options = client_options.ClientOptions()
-    options.api_key = "api_key"
-    with pytest.raises(ValueError):
-        client = DatabaseAdminClient(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-
-    # It is an error to provide scopes and a transport instance.
-    transport = transports.DatabaseAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = DatabaseAdminClient(
-            client_options={"scopes": ["1", "2"]},
-            transport=transport,
-        )
-
-
-def test_transport_instance():
-    # A client may be instantiated with a custom transport instance.
-    transport = transports.DatabaseAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-    assert client.transport is transport
-
-
-def test_transport_get_channel():
-    # A client may be instantiated with a custom transport instance.
-    transport = transports.DatabaseAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    channel = transport.grpc_channel
-    assert channel
-
-    transport = transports.DatabaseAdminGrpcAsyncIOTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    channel = transport.grpc_channel
-    assert channel
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.DatabaseAdminGrpcTransport,
-        transports.DatabaseAdminGrpcAsyncIOTransport,
-        transports.DatabaseAdminRestTransport,
-    ],
-)
-def test_transport_adc(transport_class):
-    # Test default credentials are used if not provided.
-    with mock.patch.object(google.auth, "default") as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport_class()
-        adc.assert_called_once()
-
-
-def test_transport_kind_grpc():
-    transport = DatabaseAdminClient.get_transport_class("grpc")(
-        credentials=ga_credentials.AnonymousCredentials()
-    )
-    assert transport.kind == "grpc"
-
-
-def test_initialize_client_w_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="grpc"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_databases_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        call.return_value = spanner_database_admin.ListDatabasesResponse()
-        client.list_databases(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabasesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_database_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.CreateDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_database_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        call.return_value = spanner_database_admin.Database()
-        client.get_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.GetDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_database_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.UpdateDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_database_ddl_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_database_ddl(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.UpdateDatabaseDdlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_drop_database_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        call.return_value = None
-        client.drop_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.DropDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_database_ddl_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        call.return_value = spanner_database_admin.GetDatabaseDdlResponse()
-        client.get_database_ddl(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.GetDatabaseDdlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_set_iam_policy_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.set_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.SetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_iam_policy_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.get_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.GetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_test_iam_permissions_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        client.test_iam_permissions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.TestIamPermissionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_backup_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup.CreateBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_copy_backup_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.copy_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.CopyBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_backup_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        call.return_value = backup.Backup()
-        client.get_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.GetBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_backup_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        call.return_value = gsad_backup.Backup()
-        client.update_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup.UpdateBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_backup_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        call.return_value = None
-        client.delete_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.DeleteBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_backups_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        call.return_value = backup.ListBackupsResponse()
-        client.list_backups(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.ListBackupsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_restore_database_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.restore_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.RestoreDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_database_operations_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        call.return_value = spanner_database_admin.ListDatabaseOperationsResponse()
-        client.list_database_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabaseOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_backup_operations_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        call.return_value = backup.ListBackupOperationsResponse()
-        client.list_backup_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.ListBackupOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_database_roles_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        call.return_value = spanner_database_admin.ListDatabaseRolesResponse()
-        client.list_database_roles(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabaseRolesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_add_split_points_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        call.return_value = spanner_database_admin.AddSplitPointsResponse()
-        client.add_split_points(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.AddSplitPointsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_backup_schedule_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-        client.create_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup_schedule.CreateBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_backup_schedule_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = backup_schedule.BackupSchedule()
-        client.get_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.GetBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_backup_schedule_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = gsad_backup_schedule.BackupSchedule()
-        client.update_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup_schedule.UpdateBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_backup_schedule_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        call.return_value = None
-        client.delete_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.DeleteBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_backup_schedules_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        call.return_value = backup_schedule.ListBackupSchedulesResponse()
-        client.list_backup_schedules(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.ListBackupSchedulesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_internal_update_graph_operation_empty_call_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        call.return_value = (
-            spanner_database_admin.InternalUpdateGraphOperationResponse()
-        )
-        client.internal_update_graph_operation(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.InternalUpdateGraphOperationRequest()
-
-        assert args[0] == request_msg
-
-
-def test_transport_kind_grpc_asyncio():
-    transport = DatabaseAdminAsyncClient.get_transport_class("grpc_asyncio")(
-        credentials=async_anonymous_credentials()
-    )
-    assert transport.kind == "grpc_asyncio"
-
-
-def test_initialize_client_w_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(), transport="grpc_asyncio"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_databases_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabasesResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_databases(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabasesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_create_database_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.create_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.CreateDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_database_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.Database(
-                name="name_value",
-                state=spanner_database_admin.Database.State.CREATING,
-                version_retention_period="version_retention_period_value",
-                default_leader="default_leader_value",
-                database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-                enable_drop_protection=True,
-                reconciling=True,
-            )
-        )
-        await client.get_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.GetDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_update_database_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.update_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.UpdateDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_update_database_ddl_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.update_database_ddl(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.UpdateDatabaseDdlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_drop_database_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.drop_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.DropDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_database_ddl_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.GetDatabaseDdlResponse(
-                statements=["statements_value"],
-                proto_descriptors=b"proto_descriptors_blob",
-            )
-        )
-        await client.get_database_ddl(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.GetDatabaseDdlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_set_iam_policy_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        await client.set_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.SetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_iam_policy_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        await client.get_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.GetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_test_iam_permissions_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse(
-                permissions=["permissions_value"],
-            )
-        )
-        await client.test_iam_permissions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.TestIamPermissionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_create_backup_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.create_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup.CreateBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_copy_backup_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.copy_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.CopyBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_backup_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.Backup(
-                database="database_value",
-                name="name_value",
-                size_bytes=1089,
-                freeable_size_bytes=2006,
-                exclusive_size_bytes=2168,
-                state=backup.Backup.State.CREATING,
-                referencing_databases=["referencing_databases_value"],
-                database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-                referencing_backups=["referencing_backups_value"],
-                backup_schedules=["backup_schedules_value"],
-                incremental_backup_chain_id="incremental_backup_chain_id_value",
-            )
-        )
-        await client.get_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.GetBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_update_backup_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup.Backup(
-                database="database_value",
-                name="name_value",
-                size_bytes=1089,
-                freeable_size_bytes=2006,
-                exclusive_size_bytes=2168,
-                state=gsad_backup.Backup.State.CREATING,
-                referencing_databases=["referencing_databases_value"],
-                database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-                referencing_backups=["referencing_backups_value"],
-                backup_schedules=["backup_schedules_value"],
-                incremental_backup_chain_id="incremental_backup_chain_id_value",
-            )
-        )
-        await client.update_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup.UpdateBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_delete_backup_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.DeleteBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_backups_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_backups(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.ListBackupsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_restore_database_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.restore_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.RestoreDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_database_operations_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseOperationsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_database_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabaseOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_backup_operations_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup.ListBackupOperationsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_backup_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.ListBackupOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_database_roles_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.ListDatabaseRolesResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_database_roles(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabaseRolesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_add_split_points_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.AddSplitPointsResponse()
-        )
-        await client.add_split_points(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.AddSplitPointsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_create_backup_schedule_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule(
-                name="name_value",
-            )
-        )
-        await client.create_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup_schedule.CreateBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_backup_schedule_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.BackupSchedule(
-                name="name_value",
-            )
-        )
-        await client.get_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.GetBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_update_backup_schedule_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            gsad_backup_schedule.BackupSchedule(
-                name="name_value",
-            )
-        )
-        await client.update_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup_schedule.UpdateBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_delete_backup_schedule_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.DeleteBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_backup_schedules_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            backup_schedule.ListBackupSchedulesResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_backup_schedules(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.ListBackupSchedulesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_internal_update_graph_operation_empty_call_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_database_admin.InternalUpdateGraphOperationResponse()
-        )
-        await client.internal_update_graph_operation(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.InternalUpdateGraphOperationRequest()
-
-        assert args[0] == request_msg
-
-
-def test_transport_kind_rest():
-    transport = DatabaseAdminClient.get_transport_class("rest")(
-        credentials=ga_credentials.AnonymousCredentials()
-    )
-    assert transport.kind == "rest"
-
-
-def test_list_databases_rest_bad_request(
-    request_type=spanner_database_admin.ListDatabasesRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_databases(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.ListDatabasesRequest,
-        dict,
-    ],
-)
-def test_list_databases_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.ListDatabasesResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.ListDatabasesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_databases(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabasesPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_databases_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_databases"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_databases_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_list_databases"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.ListDatabasesRequest.pb(
-            spanner_database_admin.ListDatabasesRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_database_admin.ListDatabasesResponse.to_json(
-            spanner_database_admin.ListDatabasesResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.ListDatabasesRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_database_admin.ListDatabasesResponse()
-        post_with_metadata.return_value = (
-            spanner_database_admin.ListDatabasesResponse(),
-            metadata,
-        )
-
-        client.list_databases(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_create_database_rest_bad_request(
-    request_type=spanner_database_admin.CreateDatabaseRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.create_database(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.CreateDatabaseRequest,
-        dict,
-    ],
-)
-def test_create_database_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.create_database(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_create_database_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_create_database"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_create_database_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_create_database"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.CreateDatabaseRequest.pb(
-            spanner_database_admin.CreateDatabaseRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.CreateDatabaseRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.create_database(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_database_rest_bad_request(
-    request_type=spanner_database_admin.GetDatabaseRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_database(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.GetDatabaseRequest,
-        dict,
-    ],
-)
-def test_get_database_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.Database(
-            name="name_value",
-            state=spanner_database_admin.Database.State.CREATING,
-            version_retention_period="version_retention_period_value",
-            default_leader="default_leader_value",
-            database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-            enable_drop_protection=True,
-            reconciling=True,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.Database.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_database(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.Database)
-    assert response.name == "name_value"
-    assert response.state == spanner_database_admin.Database.State.CREATING
-    assert response.version_retention_period == "version_retention_period_value"
-    assert response.default_leader == "default_leader_value"
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.enable_drop_protection is True
-    assert response.reconciling is True
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_database_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_database"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_database_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_get_database"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.GetDatabaseRequest.pb(
-            spanner_database_admin.GetDatabaseRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_database_admin.Database.to_json(
-            spanner_database_admin.Database()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.GetDatabaseRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_database_admin.Database()
-        post_with_metadata.return_value = spanner_database_admin.Database(), metadata
-
-        client.get_database(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_update_database_rest_bad_request(
-    request_type=spanner_database_admin.UpdateDatabaseRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "database": {"name": "projects/sample1/instances/sample2/databases/sample3"}
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.update_database(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.UpdateDatabaseRequest,
-        dict,
-    ],
-)
-def test_update_database_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "database": {"name": "projects/sample1/instances/sample2/databases/sample3"}
-    }
-    request_init["database"] = {
-        "name": "projects/sample1/instances/sample2/databases/sample3",
-        "state": 1,
-        "create_time": {"seconds": 751, "nanos": 543},
-        "restore_info": {
-            "source_type": 1,
-            "backup_info": {
-                "backup": "backup_value",
-                "version_time": {},
-                "create_time": {},
-                "source_database": "source_database_value",
-            },
-        },
-        "encryption_config": {
-            "kms_key_name": "kms_key_name_value",
-            "kms_key_names": ["kms_key_names_value1", "kms_key_names_value2"],
-        },
-        "encryption_info": [
-            {
-                "encryption_type": 1,
-                "encryption_status": {
-                    "code": 411,
-                    "message": "message_value",
-                    "details": [
-                        {
-                            "type_url": "type.googleapis.com/google.protobuf.Duration",
-                            "value": b"\x08\x0c\x10\xdb\x07",
-                        }
-                    ],
-                },
-                "kms_key_version": "kms_key_version_value",
-            }
-        ],
-        "version_retention_period": "version_retention_period_value",
-        "earliest_version_time": {},
-        "default_leader": "default_leader_value",
-        "database_dialect": 1,
-        "enable_drop_protection": True,
-        "reconciling": True,
-    }
-    # The version of a generated dependency at test runtime may differ from the version used during generation.
-    # Delete any fields which are not present in the current runtime dependency
-    # See https://github.com/googleapis/gapic-generator-python/issues/1748
-
-    # Determine if the message type is proto-plus or protobuf
-    test_field = spanner_database_admin.UpdateDatabaseRequest.meta.fields["database"]
-
-    def get_message_fields(field):
-        # Given a field which is a message (composite type), return a list with
-        # all the fields of the message.
-        # If the field is not a composite type, return an empty list.
-        message_fields = []
-
-        if hasattr(field, "message") and field.message:
-            is_field_type_proto_plus_type = not hasattr(field.message, "DESCRIPTOR")
-
-            if is_field_type_proto_plus_type:
-                message_fields = field.message.meta.fields.values()
-            # Add `# pragma: NO COVER` because there may not be any `*_pb2` field types
-            else:  # pragma: NO COVER
-                message_fields = field.message.DESCRIPTOR.fields
-        return message_fields
-
-    runtime_nested_fields = [
-        (field.name, nested_field.name)
-        for field in get_message_fields(test_field)
-        for nested_field in get_message_fields(field)
-    ]
-
-    subfields_not_in_runtime = []
-
-    # For each item in the sample request, create a list of sub fields which are not present at runtime
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for field, value in request_init["database"].items():  # pragma: NO COVER
-        result = None
-        is_repeated = False
-        # For repeated fields
-        if isinstance(value, list) and len(value):
-            is_repeated = True
-            result = value[0]
-        # For fields where the type is another message
-        if isinstance(value, dict):
-            result = value
-
-        if result and hasattr(result, "keys"):
-            for subfield in result.keys():
-                if (field, subfield) not in runtime_nested_fields:
-                    subfields_not_in_runtime.append(
-                        {
-                            "field": field,
-                            "subfield": subfield,
-                            "is_repeated": is_repeated,
-                        }
-                    )
-
-    # Remove fields from the sample request which are not present in the runtime version of the dependency
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for subfield_to_delete in subfields_not_in_runtime:  # pragma: NO COVER
-        field = subfield_to_delete.get("field")
-        field_repeated = subfield_to_delete.get("is_repeated")
-        subfield = subfield_to_delete.get("subfield")
-        if subfield:
-            if field_repeated:
-                for i in range(0, len(request_init["database"][field])):
-                    del request_init["database"][field][i][subfield]
-            else:
-                del request_init["database"][field][subfield]
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.update_database(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_update_database_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_update_database"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_update_database_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_update_database"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.UpdateDatabaseRequest.pb(
-            spanner_database_admin.UpdateDatabaseRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.UpdateDatabaseRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.update_database(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_update_database_ddl_rest_bad_request(
-    request_type=spanner_database_admin.UpdateDatabaseDdlRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.update_database_ddl(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.UpdateDatabaseDdlRequest,
-        dict,
-    ],
-)
-def test_update_database_ddl_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.update_database_ddl(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_update_database_ddl_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_update_database_ddl"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_update_database_ddl_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_update_database_ddl"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.UpdateDatabaseDdlRequest.pb(
-            spanner_database_admin.UpdateDatabaseDdlRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.UpdateDatabaseDdlRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.update_database_ddl(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_drop_database_rest_bad_request(
-    request_type=spanner_database_admin.DropDatabaseRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.drop_database(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.DropDatabaseRequest,
-        dict,
-    ],
-)
-def test_drop_database_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.drop_database(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_drop_database_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_drop_database"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = spanner_database_admin.DropDatabaseRequest.pb(
-            spanner_database_admin.DropDatabaseRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = spanner_database_admin.DropDatabaseRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.drop_database(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_get_database_ddl_rest_bad_request(
-    request_type=spanner_database_admin.GetDatabaseDdlRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_database_ddl(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.GetDatabaseDdlRequest,
-        dict,
-    ],
-)
-def test_get_database_ddl_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.GetDatabaseDdlResponse(
-            statements=["statements_value"],
-            proto_descriptors=b"proto_descriptors_blob",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.GetDatabaseDdlResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_database_ddl(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.GetDatabaseDdlResponse)
-    assert response.statements == ["statements_value"]
-    assert response.proto_descriptors == b"proto_descriptors_blob"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_database_ddl_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_database_ddl"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_database_ddl_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_get_database_ddl"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.GetDatabaseDdlRequest.pb(
-            spanner_database_admin.GetDatabaseDdlRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_database_admin.GetDatabaseDdlResponse.to_json(
-            spanner_database_admin.GetDatabaseDdlResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.GetDatabaseDdlRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_database_admin.GetDatabaseDdlResponse()
-        post_with_metadata.return_value = (
-            spanner_database_admin.GetDatabaseDdlResponse(),
-            metadata,
-        )
-
-        client.get_database_ddl(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_set_iam_policy_rest_bad_request(
-    request_type=iam_policy_pb2.SetIamPolicyRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.set_iam_policy(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.SetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_set_iam_policy_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.set_iam_policy(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_set_iam_policy_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_set_iam_policy"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_set_iam_policy_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_set_iam_policy"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = iam_policy_pb2.SetIamPolicyRequest()
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(policy_pb2.Policy())
-        req.return_value.content = return_value
-
-        request = iam_policy_pb2.SetIamPolicyRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = policy_pb2.Policy()
-        post_with_metadata.return_value = policy_pb2.Policy(), metadata
-
-        client.set_iam_policy(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_iam_policy_rest_bad_request(
-    request_type=iam_policy_pb2.GetIamPolicyRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_iam_policy(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.GetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_get_iam_policy_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_iam_policy(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_iam_policy_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_iam_policy"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_iam_policy_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_get_iam_policy"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = iam_policy_pb2.GetIamPolicyRequest()
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(policy_pb2.Policy())
-        req.return_value.content = return_value
-
-        request = iam_policy_pb2.GetIamPolicyRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = policy_pb2.Policy()
-        post_with_metadata.return_value = policy_pb2.Policy(), metadata
-
-        client.get_iam_policy(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_test_iam_permissions_rest_bad_request(
-    request_type=iam_policy_pb2.TestIamPermissionsRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.test_iam_permissions(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.TestIamPermissionsRequest,
-        dict,
-    ],
-)
-def test_test_iam_permissions_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = iam_policy_pb2.TestIamPermissionsResponse(
-            permissions=["permissions_value"],
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.test_iam_permissions(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, iam_policy_pb2.TestIamPermissionsResponse)
-    assert response.permissions == ["permissions_value"]
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_test_iam_permissions_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_test_iam_permissions"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_test_iam_permissions_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_test_iam_permissions"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = iam_policy_pb2.TestIamPermissionsRequest()
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(
-            iam_policy_pb2.TestIamPermissionsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = iam_policy_pb2.TestIamPermissionsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        post_with_metadata.return_value = (
-            iam_policy_pb2.TestIamPermissionsResponse(),
-            metadata,
-        )
-
-        client.test_iam_permissions(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_create_backup_rest_bad_request(request_type=gsad_backup.CreateBackupRequest):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.create_backup(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup.CreateBackupRequest,
-        dict,
-    ],
-)
-def test_create_backup_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request_init["backup"] = {
-        "database": "database_value",
-        "version_time": {"seconds": 751, "nanos": 543},
-        "expire_time": {},
-        "name": "name_value",
-        "create_time": {},
-        "size_bytes": 1089,
-        "freeable_size_bytes": 2006,
-        "exclusive_size_bytes": 2168,
-        "state": 1,
-        "referencing_databases": [
-            "referencing_databases_value1",
-            "referencing_databases_value2",
-        ],
-        "encryption_info": {
-            "encryption_type": 1,
-            "encryption_status": {
-                "code": 411,
-                "message": "message_value",
-                "details": [
-                    {
-                        "type_url": "type.googleapis.com/google.protobuf.Duration",
-                        "value": b"\x08\x0c\x10\xdb\x07",
-                    }
-                ],
-            },
-            "kms_key_version": "kms_key_version_value",
-        },
-        "encryption_information": {},
-        "database_dialect": 1,
-        "referencing_backups": [
-            "referencing_backups_value1",
-            "referencing_backups_value2",
-        ],
-        "max_expire_time": {},
-        "backup_schedules": ["backup_schedules_value1", "backup_schedules_value2"],
-        "incremental_backup_chain_id": "incremental_backup_chain_id_value",
-        "oldest_version_time": {},
-        "instance_partitions": [{"instance_partition": "instance_partition_value"}],
-    }
-    # The version of a generated dependency at test runtime may differ from the version used during generation.
-    # Delete any fields which are not present in the current runtime dependency
-    # See https://github.com/googleapis/gapic-generator-python/issues/1748
-
-    # Determine if the message type is proto-plus or protobuf
-    test_field = gsad_backup.CreateBackupRequest.meta.fields["backup"]
-
-    def get_message_fields(field):
-        # Given a field which is a message (composite type), return a list with
-        # all the fields of the message.
-        # If the field is not a composite type, return an empty list.
-        message_fields = []
-
-        if hasattr(field, "message") and field.message:
-            is_field_type_proto_plus_type = not hasattr(field.message, "DESCRIPTOR")
-
-            if is_field_type_proto_plus_type:
-                message_fields = field.message.meta.fields.values()
-            # Add `# pragma: NO COVER` because there may not be any `*_pb2` field types
-            else:  # pragma: NO COVER
-                message_fields = field.message.DESCRIPTOR.fields
-        return message_fields
-
-    runtime_nested_fields = [
-        (field.name, nested_field.name)
-        for field in get_message_fields(test_field)
-        for nested_field in get_message_fields(field)
-    ]
-
-    subfields_not_in_runtime = []
-
-    # For each item in the sample request, create a list of sub fields which are not present at runtime
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for field, value in request_init["backup"].items():  # pragma: NO COVER
-        result = None
-        is_repeated = False
-        # For repeated fields
-        if isinstance(value, list) and len(value):
-            is_repeated = True
-            result = value[0]
-        # For fields where the type is another message
-        if isinstance(value, dict):
-            result = value
-
-        if result and hasattr(result, "keys"):
-            for subfield in result.keys():
-                if (field, subfield) not in runtime_nested_fields:
-                    subfields_not_in_runtime.append(
-                        {
-                            "field": field,
-                            "subfield": subfield,
-                            "is_repeated": is_repeated,
-                        }
-                    )
-
-    # Remove fields from the sample request which are not present in the runtime version of the dependency
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for subfield_to_delete in subfields_not_in_runtime:  # pragma: NO COVER
-        field = subfield_to_delete.get("field")
-        field_repeated = subfield_to_delete.get("is_repeated")
-        subfield = subfield_to_delete.get("subfield")
-        if subfield:
-            if field_repeated:
-                for i in range(0, len(request_init["backup"][field])):
-                    del request_init["backup"][field][i][subfield]
-            else:
-                del request_init["backup"][field][subfield]
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.create_backup(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_create_backup_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_create_backup"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_create_backup_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_create_backup"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = gsad_backup.CreateBackupRequest.pb(
-            gsad_backup.CreateBackupRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = gsad_backup.CreateBackupRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.create_backup(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_copy_backup_rest_bad_request(request_type=backup.CopyBackupRequest):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.copy_backup(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.CopyBackupRequest,
-        dict,
-    ],
-)
-def test_copy_backup_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.copy_backup(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_copy_backup_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_copy_backup"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_copy_backup_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_copy_backup"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = backup.CopyBackupRequest.pb(backup.CopyBackupRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = backup.CopyBackupRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.copy_backup(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_backup_rest_bad_request(request_type=backup.GetBackupRequest):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2/backups/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_backup(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.GetBackupRequest,
-        dict,
-    ],
-)
-def test_get_backup_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2/backups/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup.Backup(
-            database="database_value",
-            name="name_value",
-            size_bytes=1089,
-            freeable_size_bytes=2006,
-            exclusive_size_bytes=2168,
-            state=backup.Backup.State.CREATING,
-            referencing_databases=["referencing_databases_value"],
-            database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-            referencing_backups=["referencing_backups_value"],
-            backup_schedules=["backup_schedules_value"],
-            incremental_backup_chain_id="incremental_backup_chain_id_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = backup.Backup.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_backup(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, backup.Backup)
-    assert response.database == "database_value"
-    assert response.name == "name_value"
-    assert response.size_bytes == 1089
-    assert response.freeable_size_bytes == 2006
-    assert response.exclusive_size_bytes == 2168
-    assert response.state == backup.Backup.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.backup_schedules == ["backup_schedules_value"]
-    assert response.incremental_backup_chain_id == "incremental_backup_chain_id_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_backup_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_backup"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_backup_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_get_backup"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = backup.GetBackupRequest.pb(backup.GetBackupRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = backup.Backup.to_json(backup.Backup())
-        req.return_value.content = return_value
-
-        request = backup.GetBackupRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = backup.Backup()
-        post_with_metadata.return_value = backup.Backup(), metadata
-
-        client.get_backup(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_update_backup_rest_bad_request(request_type=gsad_backup.UpdateBackupRequest):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "backup": {"name": "projects/sample1/instances/sample2/backups/sample3"}
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.update_backup(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup.UpdateBackupRequest,
-        dict,
-    ],
-)
-def test_update_backup_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "backup": {"name": "projects/sample1/instances/sample2/backups/sample3"}
-    }
-    request_init["backup"] = {
-        "database": "database_value",
-        "version_time": {"seconds": 751, "nanos": 543},
-        "expire_time": {},
-        "name": "projects/sample1/instances/sample2/backups/sample3",
-        "create_time": {},
-        "size_bytes": 1089,
-        "freeable_size_bytes": 2006,
-        "exclusive_size_bytes": 2168,
-        "state": 1,
-        "referencing_databases": [
-            "referencing_databases_value1",
-            "referencing_databases_value2",
-        ],
-        "encryption_info": {
-            "encryption_type": 1,
-            "encryption_status": {
-                "code": 411,
-                "message": "message_value",
-                "details": [
-                    {
-                        "type_url": "type.googleapis.com/google.protobuf.Duration",
-                        "value": b"\x08\x0c\x10\xdb\x07",
-                    }
-                ],
-            },
-            "kms_key_version": "kms_key_version_value",
-        },
-        "encryption_information": {},
-        "database_dialect": 1,
-        "referencing_backups": [
-            "referencing_backups_value1",
-            "referencing_backups_value2",
-        ],
-        "max_expire_time": {},
-        "backup_schedules": ["backup_schedules_value1", "backup_schedules_value2"],
-        "incremental_backup_chain_id": "incremental_backup_chain_id_value",
-        "oldest_version_time": {},
-        "instance_partitions": [{"instance_partition": "instance_partition_value"}],
-    }
-    # The version of a generated dependency at test runtime may differ from the version used during generation.
-    # Delete any fields which are not present in the current runtime dependency
-    # See https://github.com/googleapis/gapic-generator-python/issues/1748
-
-    # Determine if the message type is proto-plus or protobuf
-    test_field = gsad_backup.UpdateBackupRequest.meta.fields["backup"]
-
-    def get_message_fields(field):
-        # Given a field which is a message (composite type), return a list with
-        # all the fields of the message.
-        # If the field is not a composite type, return an empty list.
-        message_fields = []
-
-        if hasattr(field, "message") and field.message:
-            is_field_type_proto_plus_type = not hasattr(field.message, "DESCRIPTOR")
-
-            if is_field_type_proto_plus_type:
-                message_fields = field.message.meta.fields.values()
-            # Add `# pragma: NO COVER` because there may not be any `*_pb2` field types
-            else:  # pragma: NO COVER
-                message_fields = field.message.DESCRIPTOR.fields
-        return message_fields
-
-    runtime_nested_fields = [
-        (field.name, nested_field.name)
-        for field in get_message_fields(test_field)
-        for nested_field in get_message_fields(field)
-    ]
-
-    subfields_not_in_runtime = []
-
-    # For each item in the sample request, create a list of sub fields which are not present at runtime
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for field, value in request_init["backup"].items():  # pragma: NO COVER
-        result = None
-        is_repeated = False
-        # For repeated fields
-        if isinstance(value, list) and len(value):
-            is_repeated = True
-            result = value[0]
-        # For fields where the type is another message
-        if isinstance(value, dict):
-            result = value
-
-        if result and hasattr(result, "keys"):
-            for subfield in result.keys():
-                if (field, subfield) not in runtime_nested_fields:
-                    subfields_not_in_runtime.append(
-                        {
-                            "field": field,
-                            "subfield": subfield,
-                            "is_repeated": is_repeated,
-                        }
-                    )
-
-    # Remove fields from the sample request which are not present in the runtime version of the dependency
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for subfield_to_delete in subfields_not_in_runtime:  # pragma: NO COVER
-        field = subfield_to_delete.get("field")
-        field_repeated = subfield_to_delete.get("is_repeated")
-        subfield = subfield_to_delete.get("subfield")
-        if subfield:
-            if field_repeated:
-                for i in range(0, len(request_init["backup"][field])):
-                    del request_init["backup"][field][i][subfield]
-            else:
-                del request_init["backup"][field][subfield]
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = gsad_backup.Backup(
-            database="database_value",
-            name="name_value",
-            size_bytes=1089,
-            freeable_size_bytes=2006,
-            exclusive_size_bytes=2168,
-            state=gsad_backup.Backup.State.CREATING,
-            referencing_databases=["referencing_databases_value"],
-            database_dialect=common.DatabaseDialect.GOOGLE_STANDARD_SQL,
-            referencing_backups=["referencing_backups_value"],
-            backup_schedules=["backup_schedules_value"],
-            incremental_backup_chain_id="incremental_backup_chain_id_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = gsad_backup.Backup.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.update_backup(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup.Backup)
-    assert response.database == "database_value"
-    assert response.name == "name_value"
-    assert response.size_bytes == 1089
-    assert response.freeable_size_bytes == 2006
-    assert response.exclusive_size_bytes == 2168
-    assert response.state == gsad_backup.Backup.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.database_dialect == common.DatabaseDialect.GOOGLE_STANDARD_SQL
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.backup_schedules == ["backup_schedules_value"]
-    assert response.incremental_backup_chain_id == "incremental_backup_chain_id_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_update_backup_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_update_backup"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_update_backup_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_update_backup"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = gsad_backup.UpdateBackupRequest.pb(
-            gsad_backup.UpdateBackupRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = gsad_backup.Backup.to_json(gsad_backup.Backup())
-        req.return_value.content = return_value
-
-        request = gsad_backup.UpdateBackupRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = gsad_backup.Backup()
-        post_with_metadata.return_value = gsad_backup.Backup(), metadata
-
-        client.update_backup(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_delete_backup_rest_bad_request(request_type=backup.DeleteBackupRequest):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2/backups/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_backup(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.DeleteBackupRequest,
-        dict,
-    ],
-)
-def test_delete_backup_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2/backups/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.delete_backup(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_delete_backup_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_delete_backup"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = backup.DeleteBackupRequest.pb(backup.DeleteBackupRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = backup.DeleteBackupRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.delete_backup(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_list_backups_rest_bad_request(request_type=backup.ListBackupsRequest):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_backups(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.ListBackupsRequest,
-        dict,
-    ],
-)
-def test_list_backups_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup.ListBackupsResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = backup.ListBackupsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_backups(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_backups_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_backups"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_backups_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_list_backups"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = backup.ListBackupsRequest.pb(backup.ListBackupsRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = backup.ListBackupsResponse.to_json(backup.ListBackupsResponse())
-        req.return_value.content = return_value
-
-        request = backup.ListBackupsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = backup.ListBackupsResponse()
-        post_with_metadata.return_value = backup.ListBackupsResponse(), metadata
-
-        client.list_backups(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_restore_database_rest_bad_request(
-    request_type=spanner_database_admin.RestoreDatabaseRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.restore_database(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.RestoreDatabaseRequest,
-        dict,
-    ],
-)
-def test_restore_database_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.restore_database(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_restore_database_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_restore_database"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_restore_database_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_restore_database"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.RestoreDatabaseRequest.pb(
-            spanner_database_admin.RestoreDatabaseRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.RestoreDatabaseRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.restore_database(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_list_database_operations_rest_bad_request(
-    request_type=spanner_database_admin.ListDatabaseOperationsRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_database_operations(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.ListDatabaseOperationsRequest,
-        dict,
-    ],
-)
-def test_list_database_operations_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.ListDatabaseOperationsResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.ListDatabaseOperationsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_database_operations(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabaseOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_database_operations_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_database_operations"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_list_database_operations_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_list_database_operations"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.ListDatabaseOperationsRequest.pb(
-            spanner_database_admin.ListDatabaseOperationsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_database_admin.ListDatabaseOperationsResponse.to_json(
-            spanner_database_admin.ListDatabaseOperationsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.ListDatabaseOperationsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_database_admin.ListDatabaseOperationsResponse()
-        post_with_metadata.return_value = (
-            spanner_database_admin.ListDatabaseOperationsResponse(),
-            metadata,
-        )
-
-        client.list_database_operations(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_list_backup_operations_rest_bad_request(
-    request_type=backup.ListBackupOperationsRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_backup_operations(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup.ListBackupOperationsRequest,
-        dict,
-    ],
-)
-def test_list_backup_operations_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup.ListBackupOperationsResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = backup.ListBackupOperationsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_backup_operations(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_backup_operations_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_backup_operations"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_list_backup_operations_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_list_backup_operations"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = backup.ListBackupOperationsRequest.pb(
-            backup.ListBackupOperationsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = backup.ListBackupOperationsResponse.to_json(
-            backup.ListBackupOperationsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = backup.ListBackupOperationsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = backup.ListBackupOperationsResponse()
-        post_with_metadata.return_value = (
-            backup.ListBackupOperationsResponse(),
-            metadata,
-        )
-
-        client.list_backup_operations(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_list_database_roles_rest_bad_request(
-    request_type=spanner_database_admin.ListDatabaseRolesRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_database_roles(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.ListDatabaseRolesRequest,
-        dict,
-    ],
-)
-def test_list_database_roles_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.ListDatabaseRolesResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.ListDatabaseRolesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_database_roles(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListDatabaseRolesPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_database_roles_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_database_roles"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_list_database_roles_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_list_database_roles"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.ListDatabaseRolesRequest.pb(
-            spanner_database_admin.ListDatabaseRolesRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_database_admin.ListDatabaseRolesResponse.to_json(
-            spanner_database_admin.ListDatabaseRolesResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.ListDatabaseRolesRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_database_admin.ListDatabaseRolesResponse()
-        post_with_metadata.return_value = (
-            spanner_database_admin.ListDatabaseRolesResponse(),
-            metadata,
-        )
-
-        client.list_database_roles(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_add_split_points_rest_bad_request(
-    request_type=spanner_database_admin.AddSplitPointsRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.add_split_points(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_database_admin.AddSplitPointsRequest,
-        dict,
-    ],
-)
-def test_add_split_points_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_database_admin.AddSplitPointsResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_database_admin.AddSplitPointsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.add_split_points(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_database_admin.AddSplitPointsResponse)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_add_split_points_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_add_split_points"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_add_split_points_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_add_split_points"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_database_admin.AddSplitPointsRequest.pb(
-            spanner_database_admin.AddSplitPointsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_database_admin.AddSplitPointsResponse.to_json(
-            spanner_database_admin.AddSplitPointsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_database_admin.AddSplitPointsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_database_admin.AddSplitPointsResponse()
-        post_with_metadata.return_value = (
-            spanner_database_admin.AddSplitPointsResponse(),
-            metadata,
-        )
-
-        client.add_split_points(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_create_backup_schedule_rest_bad_request(
-    request_type=gsad_backup_schedule.CreateBackupScheduleRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.create_backup_schedule(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup_schedule.CreateBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_create_backup_schedule_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2/databases/sample3"}
-    request_init["backup_schedule"] = {
-        "name": "name_value",
-        "spec": {
-            "cron_spec": {
-                "text": "text_value",
-                "time_zone": "time_zone_value",
-                "creation_window": {"seconds": 751, "nanos": 543},
-            }
-        },
-        "retention_duration": {},
-        "encryption_config": {
-            "encryption_type": 1,
-            "kms_key_name": "kms_key_name_value",
-            "kms_key_names": ["kms_key_names_value1", "kms_key_names_value2"],
-        },
-        "full_backup_spec": {},
-        "incremental_backup_spec": {},
-        "update_time": {"seconds": 751, "nanos": 543},
-    }
-    # The version of a generated dependency at test runtime may differ from the version used during generation.
-    # Delete any fields which are not present in the current runtime dependency
-    # See https://github.com/googleapis/gapic-generator-python/issues/1748
-
-    # Determine if the message type is proto-plus or protobuf
-    test_field = gsad_backup_schedule.CreateBackupScheduleRequest.meta.fields[
-        "backup_schedule"
-    ]
-
-    def get_message_fields(field):
-        # Given a field which is a message (composite type), return a list with
-        # all the fields of the message.
-        # If the field is not a composite type, return an empty list.
-        message_fields = []
-
-        if hasattr(field, "message") and field.message:
-            is_field_type_proto_plus_type = not hasattr(field.message, "DESCRIPTOR")
-
-            if is_field_type_proto_plus_type:
-                message_fields = field.message.meta.fields.values()
-            # Add `# pragma: NO COVER` because there may not be any `*_pb2` field types
-            else:  # pragma: NO COVER
-                message_fields = field.message.DESCRIPTOR.fields
-        return message_fields
-
-    runtime_nested_fields = [
-        (field.name, nested_field.name)
-        for field in get_message_fields(test_field)
-        for nested_field in get_message_fields(field)
-    ]
-
-    subfields_not_in_runtime = []
-
-    # For each item in the sample request, create a list of sub fields which are not present at runtime
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for field, value in request_init["backup_schedule"].items():  # pragma: NO COVER
-        result = None
-        is_repeated = False
-        # For repeated fields
-        if isinstance(value, list) and len(value):
-            is_repeated = True
-            result = value[0]
-        # For fields where the type is another message
-        if isinstance(value, dict):
-            result = value
-
-        if result and hasattr(result, "keys"):
-            for subfield in result.keys():
-                if (field, subfield) not in runtime_nested_fields:
-                    subfields_not_in_runtime.append(
-                        {
-                            "field": field,
-                            "subfield": subfield,
-                            "is_repeated": is_repeated,
-                        }
-                    )
-
-    # Remove fields from the sample request which are not present in the runtime version of the dependency
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for subfield_to_delete in subfields_not_in_runtime:  # pragma: NO COVER
-        field = subfield_to_delete.get("field")
-        field_repeated = subfield_to_delete.get("is_repeated")
-        subfield = subfield_to_delete.get("subfield")
-        if subfield:
-            if field_repeated:
-                for i in range(0, len(request_init["backup_schedule"][field])):
-                    del request_init["backup_schedule"][field][i][subfield]
-            else:
-                del request_init["backup_schedule"][field][subfield]
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = gsad_backup_schedule.BackupSchedule(
-            name="name_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = gsad_backup_schedule.BackupSchedule.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.create_backup_schedule(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_create_backup_schedule_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_create_backup_schedule"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_create_backup_schedule_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_create_backup_schedule"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = gsad_backup_schedule.CreateBackupScheduleRequest.pb(
-            gsad_backup_schedule.CreateBackupScheduleRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = gsad_backup_schedule.BackupSchedule.to_json(
-            gsad_backup_schedule.BackupSchedule()
-        )
-        req.return_value.content = return_value
-
-        request = gsad_backup_schedule.CreateBackupScheduleRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = gsad_backup_schedule.BackupSchedule()
-        post_with_metadata.return_value = (
-            gsad_backup_schedule.BackupSchedule(),
-            metadata,
-        )
-
-        client.create_backup_schedule(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_backup_schedule_rest_bad_request(
-    request_type=backup_schedule.GetBackupScheduleRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_backup_schedule(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup_schedule.GetBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_get_backup_schedule_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup_schedule.BackupSchedule(
-            name="name_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = backup_schedule.BackupSchedule.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_backup_schedule(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_backup_schedule_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_get_backup_schedule"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_get_backup_schedule_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_get_backup_schedule"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = backup_schedule.GetBackupScheduleRequest.pb(
-            backup_schedule.GetBackupScheduleRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = backup_schedule.BackupSchedule.to_json(
-            backup_schedule.BackupSchedule()
-        )
-        req.return_value.content = return_value
-
-        request = backup_schedule.GetBackupScheduleRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = backup_schedule.BackupSchedule()
-        post_with_metadata.return_value = backup_schedule.BackupSchedule(), metadata
-
-        client.get_backup_schedule(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_update_backup_schedule_rest_bad_request(
-    request_type=gsad_backup_schedule.UpdateBackupScheduleRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "backup_schedule": {
-            "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-        }
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.update_backup_schedule(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        gsad_backup_schedule.UpdateBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_update_backup_schedule_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "backup_schedule": {
-            "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-        }
-    }
-    request_init["backup_schedule"] = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4",
-        "spec": {
-            "cron_spec": {
-                "text": "text_value",
-                "time_zone": "time_zone_value",
-                "creation_window": {"seconds": 751, "nanos": 543},
-            }
-        },
-        "retention_duration": {},
-        "encryption_config": {
-            "encryption_type": 1,
-            "kms_key_name": "kms_key_name_value",
-            "kms_key_names": ["kms_key_names_value1", "kms_key_names_value2"],
-        },
-        "full_backup_spec": {},
-        "incremental_backup_spec": {},
-        "update_time": {"seconds": 751, "nanos": 543},
-    }
-    # The version of a generated dependency at test runtime may differ from the version used during generation.
-    # Delete any fields which are not present in the current runtime dependency
-    # See https://github.com/googleapis/gapic-generator-python/issues/1748
-
-    # Determine if the message type is proto-plus or protobuf
-    test_field = gsad_backup_schedule.UpdateBackupScheduleRequest.meta.fields[
-        "backup_schedule"
-    ]
-
-    def get_message_fields(field):
-        # Given a field which is a message (composite type), return a list with
-        # all the fields of the message.
-        # If the field is not a composite type, return an empty list.
-        message_fields = []
-
-        if hasattr(field, "message") and field.message:
-            is_field_type_proto_plus_type = not hasattr(field.message, "DESCRIPTOR")
-
-            if is_field_type_proto_plus_type:
-                message_fields = field.message.meta.fields.values()
-            # Add `# pragma: NO COVER` because there may not be any `*_pb2` field types
-            else:  # pragma: NO COVER
-                message_fields = field.message.DESCRIPTOR.fields
-        return message_fields
-
-    runtime_nested_fields = [
-        (field.name, nested_field.name)
-        for field in get_message_fields(test_field)
-        for nested_field in get_message_fields(field)
-    ]
-
-    subfields_not_in_runtime = []
-
-    # For each item in the sample request, create a list of sub fields which are not present at runtime
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for field, value in request_init["backup_schedule"].items():  # pragma: NO COVER
-        result = None
-        is_repeated = False
-        # For repeated fields
-        if isinstance(value, list) and len(value):
-            is_repeated = True
-            result = value[0]
-        # For fields where the type is another message
-        if isinstance(value, dict):
-            result = value
-
-        if result and hasattr(result, "keys"):
-            for subfield in result.keys():
-                if (field, subfield) not in runtime_nested_fields:
-                    subfields_not_in_runtime.append(
-                        {
-                            "field": field,
-                            "subfield": subfield,
-                            "is_repeated": is_repeated,
-                        }
-                    )
-
-    # Remove fields from the sample request which are not present in the runtime version of the dependency
-    # Add `# pragma: NO COVER` because this test code will not run if all subfields are present at runtime
-    for subfield_to_delete in subfields_not_in_runtime:  # pragma: NO COVER
-        field = subfield_to_delete.get("field")
-        field_repeated = subfield_to_delete.get("is_repeated")
-        subfield = subfield_to_delete.get("subfield")
-        if subfield:
-            if field_repeated:
-                for i in range(0, len(request_init["backup_schedule"][field])):
-                    del request_init["backup_schedule"][field][i][subfield]
-            else:
-                del request_init["backup_schedule"][field][subfield]
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = gsad_backup_schedule.BackupSchedule(
-            name="name_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = gsad_backup_schedule.BackupSchedule.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.update_backup_schedule(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, gsad_backup_schedule.BackupSchedule)
-    assert response.name == "name_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_update_backup_schedule_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_update_backup_schedule"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_update_backup_schedule_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_update_backup_schedule"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = gsad_backup_schedule.UpdateBackupScheduleRequest.pb(
-            gsad_backup_schedule.UpdateBackupScheduleRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = gsad_backup_schedule.BackupSchedule.to_json(
-            gsad_backup_schedule.BackupSchedule()
-        )
-        req.return_value.content = return_value
-
-        request = gsad_backup_schedule.UpdateBackupScheduleRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = gsad_backup_schedule.BackupSchedule()
-        post_with_metadata.return_value = (
-            gsad_backup_schedule.BackupSchedule(),
-            metadata,
-        )
-
-        client.update_backup_schedule(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_delete_backup_schedule_rest_bad_request(
-    request_type=backup_schedule.DeleteBackupScheduleRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_backup_schedule(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup_schedule.DeleteBackupScheduleRequest,
-        dict,
-    ],
-)
-def test_delete_backup_schedule_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/backupSchedules/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.delete_backup_schedule(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_delete_backup_schedule_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_delete_backup_schedule"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = backup_schedule.DeleteBackupScheduleRequest.pb(
-            backup_schedule.DeleteBackupScheduleRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = backup_schedule.DeleteBackupScheduleRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.delete_backup_schedule(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_list_backup_schedules_rest_bad_request(
-    request_type=backup_schedule.ListBackupSchedulesRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_backup_schedules(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        backup_schedule.ListBackupSchedulesRequest,
-        dict,
-    ],
-)
-def test_list_backup_schedules_rest_call_success(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = backup_schedule.ListBackupSchedulesResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = backup_schedule.ListBackupSchedulesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_backup_schedules(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListBackupSchedulesPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_backup_schedules_rest_interceptors(null_interceptor):
-    transport = transports.DatabaseAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.DatabaseAdminRestInterceptor(),
-    )
-    client = DatabaseAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "post_list_backup_schedules"
-    ) as post, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor,
-        "post_list_backup_schedules_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.DatabaseAdminRestInterceptor, "pre_list_backup_schedules"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = backup_schedule.ListBackupSchedulesRequest.pb(
-            backup_schedule.ListBackupSchedulesRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = backup_schedule.ListBackupSchedulesResponse.to_json(
-            backup_schedule.ListBackupSchedulesResponse()
-        )
-        req.return_value.content = return_value
-
-        request = backup_schedule.ListBackupSchedulesRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = backup_schedule.ListBackupSchedulesResponse()
-        post_with_metadata.return_value = (
-            backup_schedule.ListBackupSchedulesResponse(),
-            metadata,
-        )
-
-        client.list_backup_schedules(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_internal_update_graph_operation_rest_error():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    with pytest.raises(NotImplementedError) as not_implemented_error:
-        client.internal_update_graph_operation({})
-    assert (
-        "Method InternalUpdateGraphOperation is not available over REST transport"
-        in str(not_implemented_error.value)
-    )
-
-
-def test_cancel_operation_rest_bad_request(
-    request_type=operations_pb2.CancelOperationRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {
-            "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-        },
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.cancel_operation(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.CancelOperationRequest,
-        dict,
-    ],
-)
-def test_cancel_operation_rest(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = "{}"
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.cancel_operation(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_operation_rest_bad_request(
-    request_type=operations_pb2.DeleteOperationRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {
-            "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-        },
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_operation(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.DeleteOperationRequest,
-        dict,
-    ],
-)
-def test_delete_operation_rest(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = "{}"
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.delete_operation(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_get_operation_rest_bad_request(
-    request_type=operations_pb2.GetOperationRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {
-            "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-        },
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_operation(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.GetOperationRequest,
-        dict,
-    ],
-)
-def test_get_operation_rest(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.get_operation(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.Operation)
-
-
-def test_list_operations_rest_bad_request(
-    request_type=operations_pb2.ListOperationsRequest,
-):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {"name": "projects/sample1/instances/sample2/databases/sample3/operations"},
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_operations(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.ListOperationsRequest,
-        dict,
-    ],
-)
-def test_list_operations_rest(request_type):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.ListOperationsResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.list_operations(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.ListOperationsResponse)
-
-
-def test_initialize_client_w_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_databases_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_databases), "__call__") as call:
-        client.list_databases(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabasesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_database_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_database), "__call__") as call:
-        client.create_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.CreateDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_database_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_database), "__call__") as call:
-        client.get_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.GetDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_database_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_database), "__call__") as call:
-        client.update_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.UpdateDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_database_ddl_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_database_ddl), "__call__"
-    ) as call:
-        client.update_database_ddl(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.UpdateDatabaseDdlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_drop_database_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.drop_database), "__call__") as call:
-        client.drop_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.DropDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_database_ddl_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_database_ddl), "__call__") as call:
-        client.get_database_ddl(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.GetDatabaseDdlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_set_iam_policy_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        client.set_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.SetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_iam_policy_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        client.get_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.GetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_test_iam_permissions_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        client.test_iam_permissions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.TestIamPermissionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_backup_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_backup), "__call__") as call:
-        client.create_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup.CreateBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_copy_backup_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.copy_backup), "__call__") as call:
-        client.copy_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.CopyBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_backup_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_backup), "__call__") as call:
-        client.get_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.GetBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_backup_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_backup), "__call__") as call:
-        client.update_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup.UpdateBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_backup_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_backup), "__call__") as call:
-        client.delete_backup(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.DeleteBackupRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_backups_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_backups), "__call__") as call:
-        client.list_backups(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.ListBackupsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_restore_database_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.restore_database), "__call__") as call:
-        client.restore_database(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.RestoreDatabaseRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_database_operations_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_operations), "__call__"
-    ) as call:
-        client.list_database_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabaseOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_backup_operations_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_operations), "__call__"
-    ) as call:
-        client.list_backup_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup.ListBackupOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_database_roles_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_database_roles), "__call__"
-    ) as call:
-        client.list_database_roles(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.ListDatabaseRolesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_add_split_points_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.add_split_points), "__call__") as call:
-        client.add_split_points(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.AddSplitPointsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_backup_schedule_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_backup_schedule), "__call__"
-    ) as call:
-        client.create_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup_schedule.CreateBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_backup_schedule_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_backup_schedule), "__call__"
-    ) as call:
-        client.get_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.GetBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_backup_schedule_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_backup_schedule), "__call__"
-    ) as call:
-        client.update_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = gsad_backup_schedule.UpdateBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_backup_schedule_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_backup_schedule), "__call__"
-    ) as call:
-        client.delete_backup_schedule(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.DeleteBackupScheduleRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_backup_schedules_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_backup_schedules), "__call__"
-    ) as call:
-        client.list_backup_schedules(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = backup_schedule.ListBackupSchedulesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_internal_update_graph_operation_empty_call_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.internal_update_graph_operation), "__call__"
-    ) as call:
-        client.internal_update_graph_operation(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_database_admin.InternalUpdateGraphOperationRequest()
-
-        assert args[0] == request_msg
-
-
-def test_database_admin_rest_lro_client():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    transport = client.transport
-
-    # Ensure that we have an api-core operations client.
-    assert isinstance(
-        transport.operations_client,
-        operations_v1.AbstractOperationsClient,
-    )
-
-    # Ensure that subsequent calls to the property send the exact same object.
-    assert transport.operations_client is transport.operations_client
-
-
-def test_transport_grpc_default():
-    # A client should use the gRPC transport by default.
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    assert isinstance(
-        client.transport,
-        transports.DatabaseAdminGrpcTransport,
-    )
-
-
-def test_database_admin_base_transport_error():
-    # Passing both a credentials object and credentials_file should raise an error
-    with pytest.raises(core_exceptions.DuplicateCredentialArgs):
-        transport = transports.DatabaseAdminTransport(
-            credentials=ga_credentials.AnonymousCredentials(),
-            credentials_file="credentials.json",
-        )
-
-
-def test_database_admin_base_transport():
-    # Instantiate the base transport.
-    with mock.patch(
-        "google.cloud.spanner_admin_database_v1.services.database_admin.transports.DatabaseAdminTransport.__init__"
-    ) as Transport:
-        Transport.return_value = None
-        transport = transports.DatabaseAdminTransport(
-            credentials=ga_credentials.AnonymousCredentials(),
-        )
-
-    # Every method on the transport should just blindly
-    # raise NotImplementedError.
-    methods = (
-        "list_databases",
-        "create_database",
-        "get_database",
-        "update_database",
-        "update_database_ddl",
-        "drop_database",
-        "get_database_ddl",
-        "set_iam_policy",
-        "get_iam_policy",
-        "test_iam_permissions",
-        "create_backup",
-        "copy_backup",
-        "get_backup",
-        "update_backup",
-        "delete_backup",
-        "list_backups",
-        "restore_database",
-        "list_database_operations",
-        "list_backup_operations",
-        "list_database_roles",
-        "add_split_points",
-        "create_backup_schedule",
-        "get_backup_schedule",
-        "update_backup_schedule",
-        "delete_backup_schedule",
-        "list_backup_schedules",
-        "internal_update_graph_operation",
-        "get_operation",
-        "cancel_operation",
-        "delete_operation",
-        "list_operations",
-    )
-    for method in methods:
-        with pytest.raises(NotImplementedError):
-            getattr(transport, method)(request=object())
-
-    with pytest.raises(NotImplementedError):
-        transport.close()
-
-    # Additionally, the LRO client (a property) should
-    # also raise NotImplementedError
-    with pytest.raises(NotImplementedError):
-        transport.operations_client
-
-    # Catch all for all remaining methods and properties
-    remainder = [
-        "kind",
-    ]
-    for r in remainder:
-        with pytest.raises(NotImplementedError):
-            getattr(transport, r)()
-
-
-def test_database_admin_base_transport_with_credentials_file():
-    # Instantiate the base transport with a credentials file
-    with mock.patch.object(
-        google.auth, "load_credentials_from_file", autospec=True
-    ) as load_creds, mock.patch(
-        "google.cloud.spanner_admin_database_v1.services.database_admin.transports.DatabaseAdminTransport._prep_wrapped_messages"
-    ) as Transport:
-        Transport.return_value = None
-        load_creds.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport = transports.DatabaseAdminTransport(
-            credentials_file="credentials.json",
-            quota_project_id="octopus",
-        )
-        load_creds.assert_called_once_with(
-            "credentials.json",
-            scopes=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            quota_project_id="octopus",
-        )
-
-
-def test_database_admin_base_transport_with_adc():
-    # Test the default credentials are used if credentials and credentials_file are None.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc, mock.patch(
-        "google.cloud.spanner_admin_database_v1.services.database_admin.transports.DatabaseAdminTransport._prep_wrapped_messages"
-    ) as Transport:
-        Transport.return_value = None
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport = transports.DatabaseAdminTransport()
-        adc.assert_called_once()
-
-
-def test_database_admin_auth_adc():
-    # If no credentials are provided, we should use ADC credentials.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        DatabaseAdminClient()
-        adc.assert_called_once_with(
-            scopes=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            quota_project_id=None,
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.DatabaseAdminGrpcTransport,
-        transports.DatabaseAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_database_admin_transport_auth_adc(transport_class):
-    # If credentials and host are not provided, the transport class should use
-    # ADC credentials.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport_class(quota_project_id="octopus", scopes=["1", "2"])
-        adc.assert_called_once_with(
-            scopes=["1", "2"],
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            quota_project_id="octopus",
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.DatabaseAdminGrpcTransport,
-        transports.DatabaseAdminGrpcAsyncIOTransport,
-        transports.DatabaseAdminRestTransport,
-    ],
-)
-def test_database_admin_transport_auth_gdch_credentials(transport_class):
-    host = "https://language.com"
-    api_audience_tests = [None, "https://language2.com"]
-    api_audience_expect = [host, "https://language2.com"]
-    for t, e in zip(api_audience_tests, api_audience_expect):
-        with mock.patch.object(google.auth, "default", autospec=True) as adc:
-            gdch_mock = mock.MagicMock()
-            type(gdch_mock).with_gdch_audience = mock.PropertyMock(
-                return_value=gdch_mock
-            )
-            adc.return_value = (gdch_mock, None)
-            transport_class(host=host, api_audience=t)
-            gdch_mock.with_gdch_audience.assert_called_once_with(e)
-
-
-@pytest.mark.parametrize(
-    "transport_class,grpc_helpers",
-    [
-        (transports.DatabaseAdminGrpcTransport, grpc_helpers),
-        (transports.DatabaseAdminGrpcAsyncIOTransport, grpc_helpers_async),
-    ],
-)
-def test_database_admin_transport_create_channel(transport_class, grpc_helpers):
-    # If credentials and host are not provided, the transport class should use
-    # ADC credentials.
-    with mock.patch.object(
-        google.auth, "default", autospec=True
-    ) as adc, mock.patch.object(
-        grpc_helpers, "create_channel", autospec=True
-    ) as create_channel:
-        creds = ga_credentials.AnonymousCredentials()
-        adc.return_value = (creds, None)
-        transport_class(quota_project_id="octopus", scopes=["1", "2"])
-
-        create_channel.assert_called_with(
-            "spanner.googleapis.com:443",
-            credentials=creds,
-            credentials_file=None,
-            quota_project_id="octopus",
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            scopes=["1", "2"],
-            default_host="spanner.googleapis.com",
-            ssl_credentials=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.DatabaseAdminGrpcTransport,
-        transports.DatabaseAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_database_admin_grpc_transport_client_cert_source_for_mtls(transport_class):
-    cred = ga_credentials.AnonymousCredentials()
-
-    # Check ssl_channel_credentials is used if provided.
-    with mock.patch.object(transport_class, "create_channel") as mock_create_channel:
-        mock_ssl_channel_creds = mock.Mock()
-        transport_class(
-            host="squid.clam.whelk",
-            credentials=cred,
-            ssl_channel_credentials=mock_ssl_channel_creds,
-        )
-        mock_create_channel.assert_called_once_with(
-            "squid.clam.whelk:443",
-            credentials=cred,
-            credentials_file=None,
-            scopes=None,
-            ssl_credentials=mock_ssl_channel_creds,
-            quota_project_id=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-    # Check if ssl_channel_credentials is not provided, then client_cert_source_for_mtls
-    # is used.
-    with mock.patch.object(transport_class, "create_channel", return_value=mock.Mock()):
-        with mock.patch("grpc.ssl_channel_credentials") as mock_ssl_cred:
-            transport_class(
-                credentials=cred,
-                client_cert_source_for_mtls=client_cert_source_callback,
-            )
-            expected_cert, expected_key = client_cert_source_callback()
-            mock_ssl_cred.assert_called_once_with(
-                certificate_chain=expected_cert, private_key=expected_key
-            )
-
-
-def test_database_admin_http_transport_client_cert_source_for_mtls():
-    cred = ga_credentials.AnonymousCredentials()
-    with mock.patch(
-        "google.auth.transport.requests.AuthorizedSession.configure_mtls_channel"
-    ) as mock_configure_mtls_channel:
-        transports.DatabaseAdminRestTransport(
-            credentials=cred, client_cert_source_for_mtls=client_cert_source_callback
-        )
-        mock_configure_mtls_channel.assert_called_once_with(client_cert_source_callback)
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "grpc",
-        "grpc_asyncio",
-        "rest",
-    ],
-)
-def test_database_admin_host_no_port(transport_name):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        client_options=client_options.ClientOptions(
-            api_endpoint="spanner.googleapis.com"
-        ),
-        transport=transport_name,
-    )
-    assert client.transport._host == (
-        "spanner.googleapis.com:443"
-        if transport_name in ["grpc", "grpc_asyncio"]
-        else "https://spanner.googleapis.com"
-    )
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "grpc",
-        "grpc_asyncio",
-        "rest",
-    ],
-)
-def test_database_admin_host_with_port(transport_name):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        client_options=client_options.ClientOptions(
-            api_endpoint="spanner.googleapis.com:8000"
-        ),
-        transport=transport_name,
-    )
-    assert client.transport._host == (
-        "spanner.googleapis.com:8000"
-        if transport_name in ["grpc", "grpc_asyncio"]
-        else "https://spanner.googleapis.com:8000"
-    )
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "rest",
-    ],
-)
-def test_database_admin_client_transport_session_collision(transport_name):
-    creds1 = ga_credentials.AnonymousCredentials()
-    creds2 = ga_credentials.AnonymousCredentials()
-    client1 = DatabaseAdminClient(
-        credentials=creds1,
-        transport=transport_name,
-    )
-    client2 = DatabaseAdminClient(
-        credentials=creds2,
-        transport=transport_name,
-    )
-    session1 = client1.transport.list_databases._session
-    session2 = client2.transport.list_databases._session
-    assert session1 != session2
-    session1 = client1.transport.create_database._session
-    session2 = client2.transport.create_database._session
-    assert session1 != session2
-    session1 = client1.transport.get_database._session
-    session2 = client2.transport.get_database._session
-    assert session1 != session2
-    session1 = client1.transport.update_database._session
-    session2 = client2.transport.update_database._session
-    assert session1 != session2
-    session1 = client1.transport.update_database_ddl._session
-    session2 = client2.transport.update_database_ddl._session
-    assert session1 != session2
-    session1 = client1.transport.drop_database._session
-    session2 = client2.transport.drop_database._session
-    assert session1 != session2
-    session1 = client1.transport.get_database_ddl._session
-    session2 = client2.transport.get_database_ddl._session
-    assert session1 != session2
-    session1 = client1.transport.set_iam_policy._session
-    session2 = client2.transport.set_iam_policy._session
-    assert session1 != session2
-    session1 = client1.transport.get_iam_policy._session
-    session2 = client2.transport.get_iam_policy._session
-    assert session1 != session2
-    session1 = client1.transport.test_iam_permissions._session
-    session2 = client2.transport.test_iam_permissions._session
-    assert session1 != session2
-    session1 = client1.transport.create_backup._session
-    session2 = client2.transport.create_backup._session
-    assert session1 != session2
-    session1 = client1.transport.copy_backup._session
-    session2 = client2.transport.copy_backup._session
-    assert session1 != session2
-    session1 = client1.transport.get_backup._session
-    session2 = client2.transport.get_backup._session
-    assert session1 != session2
-    session1 = client1.transport.update_backup._session
-    session2 = client2.transport.update_backup._session
-    assert session1 != session2
-    session1 = client1.transport.delete_backup._session
-    session2 = client2.transport.delete_backup._session
-    assert session1 != session2
-    session1 = client1.transport.list_backups._session
-    session2 = client2.transport.list_backups._session
-    assert session1 != session2
-    session1 = client1.transport.restore_database._session
-    session2 = client2.transport.restore_database._session
-    assert session1 != session2
-    session1 = client1.transport.list_database_operations._session
-    session2 = client2.transport.list_database_operations._session
-    assert session1 != session2
-    session1 = client1.transport.list_backup_operations._session
-    session2 = client2.transport.list_backup_operations._session
-    assert session1 != session2
-    session1 = client1.transport.list_database_roles._session
-    session2 = client2.transport.list_database_roles._session
-    assert session1 != session2
-    session1 = client1.transport.add_split_points._session
-    session2 = client2.transport.add_split_points._session
-    assert session1 != session2
-    session1 = client1.transport.create_backup_schedule._session
-    session2 = client2.transport.create_backup_schedule._session
-    assert session1 != session2
-    session1 = client1.transport.get_backup_schedule._session
-    session2 = client2.transport.get_backup_schedule._session
-    assert session1 != session2
-    session1 = client1.transport.update_backup_schedule._session
-    session2 = client2.transport.update_backup_schedule._session
-    assert session1 != session2
-    session1 = client1.transport.delete_backup_schedule._session
-    session2 = client2.transport.delete_backup_schedule._session
-    assert session1 != session2
-    session1 = client1.transport.list_backup_schedules._session
-    session2 = client2.transport.list_backup_schedules._session
-    assert session1 != session2
-    session1 = client1.transport.internal_update_graph_operation._session
-    session2 = client2.transport.internal_update_graph_operation._session
-    assert session1 != session2
-
-
-def test_database_admin_grpc_transport_channel():
-    channel = grpc.secure_channel("http://localhost/", grpc.local_channel_credentials())
-
-    # Check that channel is used if provided.
-    transport = transports.DatabaseAdminGrpcTransport(
-        host="squid.clam.whelk",
-        channel=channel,
-    )
-    assert transport.grpc_channel == channel
-    assert transport._host == "squid.clam.whelk:443"
-    assert transport._ssl_channel_credentials == None
-
-
-def test_database_admin_grpc_asyncio_transport_channel():
-    channel = aio.secure_channel("http://localhost/", grpc.local_channel_credentials())
-
-    # Check that channel is used if provided.
-    transport = transports.DatabaseAdminGrpcAsyncIOTransport(
-        host="squid.clam.whelk",
-        channel=channel,
-    )
-    assert transport.grpc_channel == channel
-    assert transport._host == "squid.clam.whelk:443"
-    assert transport._ssl_channel_credentials == None
-
-
-# Remove this test when deprecated arguments (api_mtls_endpoint, client_cert_source) are
-# removed from grpc/grpc_asyncio transport constructor.
-@pytest.mark.filterwarnings("ignore::FutureWarning")
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.DatabaseAdminGrpcTransport,
-        transports.DatabaseAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_database_admin_transport_channel_mtls_with_client_cert_source(transport_class):
-    with mock.patch(
-        "grpc.ssl_channel_credentials", autospec=True
-    ) as grpc_ssl_channel_cred:
-        with mock.patch.object(
-            transport_class, "create_channel"
-        ) as grpc_create_channel:
-            mock_ssl_cred = mock.Mock()
-            grpc_ssl_channel_cred.return_value = mock_ssl_cred
-
-            mock_grpc_channel = mock.Mock()
-            grpc_create_channel.return_value = mock_grpc_channel
-
-            cred = ga_credentials.AnonymousCredentials()
-            with pytest.warns(DeprecationWarning):
-                with mock.patch.object(google.auth, "default") as adc:
-                    adc.return_value = (cred, None)
-                    transport = transport_class(
-                        host="squid.clam.whelk",
-                        api_mtls_endpoint="mtls.squid.clam.whelk",
-                        client_cert_source=client_cert_source_callback,
-                    )
-                    adc.assert_called_once()
-
-            grpc_ssl_channel_cred.assert_called_once_with(
-                certificate_chain=b"cert bytes", private_key=b"key bytes"
-            )
-            grpc_create_channel.assert_called_once_with(
-                "mtls.squid.clam.whelk:443",
-                credentials=cred,
-                credentials_file=None,
-                scopes=None,
-                ssl_credentials=mock_ssl_cred,
-                quota_project_id=None,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-            assert transport.grpc_channel == mock_grpc_channel
-            assert transport._ssl_channel_credentials == mock_ssl_cred
-
-
-# Remove this test when deprecated arguments (api_mtls_endpoint, client_cert_source) are
-# removed from grpc/grpc_asyncio transport constructor.
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.DatabaseAdminGrpcTransport,
-        transports.DatabaseAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_database_admin_transport_channel_mtls_with_adc(transport_class):
-    mock_ssl_cred = mock.Mock()
-    with mock.patch.multiple(
-        "google.auth.transport.grpc.SslCredentials",
-        __init__=mock.Mock(return_value=None),
-        ssl_credentials=mock.PropertyMock(return_value=mock_ssl_cred),
-    ):
-        with mock.patch.object(
-            transport_class, "create_channel"
-        ) as grpc_create_channel:
-            mock_grpc_channel = mock.Mock()
-            grpc_create_channel.return_value = mock_grpc_channel
-            mock_cred = mock.Mock()
-
-            with pytest.warns(DeprecationWarning):
-                transport = transport_class(
-                    host="squid.clam.whelk",
-                    credentials=mock_cred,
-                    api_mtls_endpoint="mtls.squid.clam.whelk",
-                    client_cert_source=None,
-                )
-
-            grpc_create_channel.assert_called_once_with(
-                "mtls.squid.clam.whelk:443",
-                credentials=mock_cred,
-                credentials_file=None,
-                scopes=None,
-                ssl_credentials=mock_ssl_cred,
-                quota_project_id=None,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-            assert transport.grpc_channel == mock_grpc_channel
-
-
-def test_database_admin_grpc_lro_client():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-    transport = client.transport
-
-    # Ensure that we have a api-core operations client.
-    assert isinstance(
-        transport.operations_client,
-        operations_v1.OperationsClient,
-    )
-
-    # Ensure that subsequent calls to the property send the exact same object.
-    assert transport.operations_client is transport.operations_client
-
-
-def test_database_admin_grpc_lro_async_client():
-    client = DatabaseAdminAsyncClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc_asyncio",
-    )
-    transport = client.transport
-
-    # Ensure that we have a api-core operations client.
-    assert isinstance(
-        transport.operations_client,
-        operations_v1.OperationsAsyncClient,
-    )
-
-    # Ensure that subsequent calls to the property send the exact same object.
-    assert transport.operations_client is transport.operations_client
-
-
-def test_backup_path():
-    project = "squid"
-    instance = "clam"
-    backup = "whelk"
-    expected = "projects/{project}/instances/{instance}/backups/{backup}".format(
-        project=project,
-        instance=instance,
-        backup=backup,
-    )
-    actual = DatabaseAdminClient.backup_path(project, instance, backup)
-    assert expected == actual
-
-
-def test_parse_backup_path():
-    expected = {
-        "project": "octopus",
-        "instance": "oyster",
-        "backup": "nudibranch",
-    }
-    path = DatabaseAdminClient.backup_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_backup_path(path)
-    assert expected == actual
-
-
-def test_backup_schedule_path():
-    project = "cuttlefish"
-    instance = "mussel"
-    database = "winkle"
-    schedule = "nautilus"
-    expected = "projects/{project}/instances/{instance}/databases/{database}/backupSchedules/{schedule}".format(
-        project=project,
-        instance=instance,
-        database=database,
-        schedule=schedule,
-    )
-    actual = DatabaseAdminClient.backup_schedule_path(
-        project, instance, database, schedule
-    )
-    assert expected == actual
-
-
-def test_parse_backup_schedule_path():
-    expected = {
-        "project": "scallop",
-        "instance": "abalone",
-        "database": "squid",
-        "schedule": "clam",
-    }
-    path = DatabaseAdminClient.backup_schedule_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_backup_schedule_path(path)
-    assert expected == actual
-
-
-def test_crypto_key_path():
-    project = "whelk"
-    location = "octopus"
-    key_ring = "oyster"
-    crypto_key = "nudibranch"
-    expected = "projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}".format(
-        project=project,
-        location=location,
-        key_ring=key_ring,
-        crypto_key=crypto_key,
-    )
-    actual = DatabaseAdminClient.crypto_key_path(
-        project, location, key_ring, crypto_key
-    )
-    assert expected == actual
-
-
-def test_parse_crypto_key_path():
-    expected = {
-        "project": "cuttlefish",
-        "location": "mussel",
-        "key_ring": "winkle",
-        "crypto_key": "nautilus",
-    }
-    path = DatabaseAdminClient.crypto_key_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_crypto_key_path(path)
-    assert expected == actual
-
-
-def test_crypto_key_version_path():
-    project = "scallop"
-    location = "abalone"
-    key_ring = "squid"
-    crypto_key = "clam"
-    crypto_key_version = "whelk"
-    expected = "projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}/cryptoKeyVersions/{crypto_key_version}".format(
-        project=project,
-        location=location,
-        key_ring=key_ring,
-        crypto_key=crypto_key,
-        crypto_key_version=crypto_key_version,
-    )
-    actual = DatabaseAdminClient.crypto_key_version_path(
-        project, location, key_ring, crypto_key, crypto_key_version
-    )
-    assert expected == actual
-
-
-def test_parse_crypto_key_version_path():
-    expected = {
-        "project": "octopus",
-        "location": "oyster",
-        "key_ring": "nudibranch",
-        "crypto_key": "cuttlefish",
-        "crypto_key_version": "mussel",
-    }
-    path = DatabaseAdminClient.crypto_key_version_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_crypto_key_version_path(path)
-    assert expected == actual
-
-
-def test_database_path():
-    project = "winkle"
-    instance = "nautilus"
-    database = "scallop"
-    expected = "projects/{project}/instances/{instance}/databases/{database}".format(
-        project=project,
-        instance=instance,
-        database=database,
-    )
-    actual = DatabaseAdminClient.database_path(project, instance, database)
-    assert expected == actual
-
-
-def test_parse_database_path():
-    expected = {
-        "project": "abalone",
-        "instance": "squid",
-        "database": "clam",
-    }
-    path = DatabaseAdminClient.database_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_database_path(path)
-    assert expected == actual
-
-
-def test_database_role_path():
-    project = "whelk"
-    instance = "octopus"
-    database = "oyster"
-    role = "nudibranch"
-    expected = "projects/{project}/instances/{instance}/databases/{database}/databaseRoles/{role}".format(
-        project=project,
-        instance=instance,
-        database=database,
-        role=role,
-    )
-    actual = DatabaseAdminClient.database_role_path(project, instance, database, role)
-    assert expected == actual
-
-
-def test_parse_database_role_path():
-    expected = {
-        "project": "cuttlefish",
-        "instance": "mussel",
-        "database": "winkle",
-        "role": "nautilus",
-    }
-    path = DatabaseAdminClient.database_role_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_database_role_path(path)
-    assert expected == actual
-
-
-def test_instance_path():
-    project = "scallop"
-    instance = "abalone"
-    expected = "projects/{project}/instances/{instance}".format(
-        project=project,
-        instance=instance,
-    )
-    actual = DatabaseAdminClient.instance_path(project, instance)
-    assert expected == actual
-
-
-def test_parse_instance_path():
-    expected = {
-        "project": "squid",
-        "instance": "clam",
-    }
-    path = DatabaseAdminClient.instance_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_instance_path(path)
-    assert expected == actual
-
-
-def test_instance_partition_path():
-    project = "whelk"
-    instance = "octopus"
-    instance_partition = "oyster"
-    expected = "projects/{project}/instances/{instance}/instancePartitions/{instance_partition}".format(
-        project=project,
-        instance=instance,
-        instance_partition=instance_partition,
-    )
-    actual = DatabaseAdminClient.instance_partition_path(
-        project, instance, instance_partition
-    )
-    assert expected == actual
-
-
-def test_parse_instance_partition_path():
-    expected = {
-        "project": "nudibranch",
-        "instance": "cuttlefish",
-        "instance_partition": "mussel",
-    }
-    path = DatabaseAdminClient.instance_partition_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_instance_partition_path(path)
-    assert expected == actual
-
-
-def test_common_billing_account_path():
-    billing_account = "winkle"
-    expected = "billingAccounts/{billing_account}".format(
-        billing_account=billing_account,
-    )
-    actual = DatabaseAdminClient.common_billing_account_path(billing_account)
-    assert expected == actual
-
-
-def test_parse_common_billing_account_path():
-    expected = {
-        "billing_account": "nautilus",
-    }
-    path = DatabaseAdminClient.common_billing_account_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_common_billing_account_path(path)
-    assert expected == actual
-
-
-def test_common_folder_path():
-    folder = "scallop"
-    expected = "folders/{folder}".format(
-        folder=folder,
-    )
-    actual = DatabaseAdminClient.common_folder_path(folder)
-    assert expected == actual
-
-
-def test_parse_common_folder_path():
-    expected = {
-        "folder": "abalone",
-    }
-    path = DatabaseAdminClient.common_folder_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_common_folder_path(path)
-    assert expected == actual
-
-
-def test_common_organization_path():
-    organization = "squid"
-    expected = "organizations/{organization}".format(
-        organization=organization,
-    )
-    actual = DatabaseAdminClient.common_organization_path(organization)
-    assert expected == actual
-
-
-def test_parse_common_organization_path():
-    expected = {
-        "organization": "clam",
-    }
-    path = DatabaseAdminClient.common_organization_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_common_organization_path(path)
-    assert expected == actual
-
-
-def test_common_project_path():
-    project = "whelk"
-    expected = "projects/{project}".format(
-        project=project,
-    )
-    actual = DatabaseAdminClient.common_project_path(project)
-    assert expected == actual
-
-
-def test_parse_common_project_path():
-    expected = {
-        "project": "octopus",
-    }
-    path = DatabaseAdminClient.common_project_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_common_project_path(path)
-    assert expected == actual
-
-
-def test_common_location_path():
-    project = "oyster"
-    location = "nudibranch"
-    expected = "projects/{project}/locations/{location}".format(
-        project=project,
-        location=location,
-    )
-    actual = DatabaseAdminClient.common_location_path(project, location)
-    assert expected == actual
-
-
-def test_parse_common_location_path():
-    expected = {
-        "project": "cuttlefish",
-        "location": "mussel",
-    }
-    path = DatabaseAdminClient.common_location_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = DatabaseAdminClient.parse_common_location_path(path)
-    assert expected == actual
-
-
-def test_client_with_default_client_info():
-    client_info = gapic_v1.client_info.ClientInfo()
-
-    with mock.patch.object(
-        transports.DatabaseAdminTransport, "_prep_wrapped_messages"
-    ) as prep:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            client_info=client_info,
-        )
-        prep.assert_called_once_with(client_info)
-
-    with mock.patch.object(
-        transports.DatabaseAdminTransport, "_prep_wrapped_messages"
-    ) as prep:
-        transport_class = DatabaseAdminClient.get_transport_class()
-        transport = transport_class(
-            credentials=ga_credentials.AnonymousCredentials(),
-            client_info=client_info,
-        )
-        prep.assert_called_once_with(client_info)
-
-
-def test_delete_operation(transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.DeleteOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_operation_async(transport: str = "grpc_asyncio"):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.DeleteOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_operation_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.DeleteOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        call.return_value = None
-
-        client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_operation_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.DeleteOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_delete_operation_from_dict():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        response = client.delete_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_delete_operation_from_dict_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_cancel_operation(transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.CancelOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_cancel_operation_async(transport: str = "grpc_asyncio"):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.CancelOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_cancel_operation_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.CancelOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        call.return_value = None
-
-        client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_cancel_operation_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.CancelOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_cancel_operation_from_dict():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        response = client.cancel_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_cancel_operation_from_dict_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.cancel_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_get_operation(transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.GetOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation()
-        response = client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.Operation)
-
-
-@pytest.mark.asyncio
-async def test_get_operation_async(transport: str = "grpc_asyncio"):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.GetOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation()
-        )
-        response = await client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.Operation)
-
-
-def test_get_operation_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.GetOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        call.return_value = operations_pb2.Operation()
-
-        client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_operation_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.GetOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation()
-        )
-        await client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_get_operation_from_dict():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation()
-
-        response = client.get_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_get_operation_from_dict_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation()
-        )
-        response = await client.get_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_list_operations(transport: str = "grpc"):
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.ListOperationsRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.ListOperationsResponse()
-        response = client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.ListOperationsResponse)
-
-
-@pytest.mark.asyncio
-async def test_list_operations_async(transport: str = "grpc_asyncio"):
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.ListOperationsRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.ListOperationsResponse()
-        )
-        response = await client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.ListOperationsResponse)
-
-
-def test_list_operations_field_headers():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.ListOperationsRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        call.return_value = operations_pb2.ListOperationsResponse()
-
-        client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_operations_field_headers_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.ListOperationsRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.ListOperationsResponse()
-        )
-        await client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_list_operations_from_dict():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.ListOperationsResponse()
-
-        response = client.list_operations(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_list_operations_from_dict_async():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.ListOperationsResponse()
-        )
-        response = await client.list_operations(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_transport_close_grpc():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="grpc"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_grpc_channel")), "close"
-    ) as close:
-        with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-@pytest.mark.asyncio
-async def test_transport_close_grpc_asyncio():
-    client = DatabaseAdminAsyncClient(
-        credentials=async_anonymous_credentials(), transport="grpc_asyncio"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_grpc_channel")), "close"
-    ) as close:
-        async with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-def test_transport_close_rest():
-    client = DatabaseAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_session")), "close"
-    ) as close:
-        with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-def test_client_ctx():
-    transports = [
-        "rest",
-        "grpc",
-    ]
-    for transport in transports:
-        client = DatabaseAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(), transport=transport
-        )
-        # Test client calls underlying transport.
-        with mock.patch.object(type(client.transport), "close") as close:
-            close.assert_not_called()
-            with client:
-                pass
-            close.assert_called()
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class",
-    [
-        (DatabaseAdminClient, transports.DatabaseAdminGrpcTransport),
-        (DatabaseAdminAsyncClient, transports.DatabaseAdminGrpcAsyncIOTransport),
-    ],
-)
-def test_api_key_credentials(client_class, transport_class):
-    with mock.patch.object(
-        google.auth._default, "get_api_key_credentials", create=True
-    ) as get_api_key_credentials:
-        mock_cred = mock.Mock()
-        get_api_key_credentials.return_value = mock_cred
-        options = client_options.ClientOptions()
-        options.api_key = "api_key"
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(client_options=options)
-            patched.assert_called_once_with(
-                credentials=mock_cred,
-                credentials_file=None,
-                host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                ),
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
diff --git a/tests/unit/gapic/spanner_admin_instance_v1/__init__.py b/tests/unit/gapic/spanner_admin_instance_v1/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/tests/unit/gapic/spanner_admin_instance_v1/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/tests/unit/gapic/spanner_admin_instance_v1/test_instance_admin.py b/tests/unit/gapic/spanner_admin_instance_v1/test_instance_admin.py
deleted file mode 100644
index 95255b83df..0000000000
--- a/tests/unit/gapic/spanner_admin_instance_v1/test_instance_admin.py
+++ /dev/null
@@ -1,20021 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import os
-import re
-
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
-
-from collections.abc import AsyncIterable, Iterable
-import json
-import math
-
-from google.api_core import api_core_version
-from google.protobuf import json_format
-import grpc
-from grpc.experimental import aio
-from proto.marshal.rules import wrappers
-from proto.marshal.rules.dates import DurationRule, TimestampRule
-import pytest
-from requests import PreparedRequest, Request, Response
-from requests.sessions import Session
-
-try:
-    from google.auth.aio import credentials as ga_credentials_async
-
-    HAS_GOOGLE_AUTH_AIO = True
-except ImportError:  # pragma: NO COVER
-    HAS_GOOGLE_AUTH_AIO = False
-
-from google.api_core import (
-    future,
-    gapic_v1,
-    grpc_helpers,
-    grpc_helpers_async,
-    operation,
-    operations_v1,
-    path_template,
-)
-from google.api_core import client_options
-from google.api_core import exceptions as core_exceptions
-from google.api_core import operation_async  # type: ignore
-from google.api_core import retry as retries
-import google.auth
-from google.auth import credentials as ga_credentials
-from google.auth.exceptions import MutualTLSChannelError
-from google.iam.v1 import iam_policy_pb2  # type: ignore
-from google.iam.v1 import options_pb2  # type: ignore
-from google.iam.v1 import policy_pb2  # type: ignore
-from google.longrunning import operations_pb2  # type: ignore
-from google.oauth2 import service_account
-from google.protobuf import field_mask_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.type import expr_pb2  # type: ignore
-
-from google.cloud.spanner_admin_instance_v1.services.instance_admin import (
-    InstanceAdminAsyncClient,
-    InstanceAdminClient,
-    pagers,
-    transports,
-)
-from google.cloud.spanner_admin_instance_v1.types import common, spanner_instance_admin
-
-CRED_INFO_JSON = {
-    "credential_source": "/path/to/file",
-    "credential_type": "service account credentials",
-    "principal": "service-account@example.com",
-}
-CRED_INFO_STRING = json.dumps(CRED_INFO_JSON)
-
-
-async def mock_async_gen(data, chunk_size=1):
-    for i in range(0, len(data)):  # pragma: NO COVER
-        chunk = data[i : i + chunk_size]
-        yield chunk.encode("utf-8")
-
-
-def client_cert_source_callback():
-    return b"cert bytes", b"key bytes"
-
-
-# TODO: use async auth anon credentials by default once the minimum version of google-auth is upgraded.
-# See related issue: https://github.com/googleapis/gapic-generator-python/issues/2107.
-def async_anonymous_credentials():
-    if HAS_GOOGLE_AUTH_AIO:
-        return ga_credentials_async.AnonymousCredentials()
-    return ga_credentials.AnonymousCredentials()
-
-
-# If default endpoint is localhost, then default mtls endpoint will be the same.
-# This method modifies the default endpoint so the client can produce a different
-# mtls endpoint for endpoint testing purposes.
-def modify_default_endpoint(client):
-    return (
-        "foo.googleapis.com"
-        if ("localhost" in client.DEFAULT_ENDPOINT)
-        else client.DEFAULT_ENDPOINT
-    )
-
-
-# If default endpoint template is localhost, then default mtls endpoint will be the same.
-# This method modifies the default endpoint template so the client can produce a different
-# mtls endpoint for endpoint testing purposes.
-def modify_default_endpoint_template(client):
-    return (
-        "test.{UNIVERSE_DOMAIN}"
-        if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE)
-        else client._DEFAULT_ENDPOINT_TEMPLATE
-    )
-
-
-def test__get_default_mtls_endpoint():
-    api_endpoint = "example.googleapis.com"
-    api_mtls_endpoint = "example.mtls.googleapis.com"
-    sandbox_endpoint = "example.sandbox.googleapis.com"
-    sandbox_mtls_endpoint = "example.mtls.sandbox.googleapis.com"
-    non_googleapi = "api.example.com"
-
-    assert InstanceAdminClient._get_default_mtls_endpoint(None) is None
-    assert (
-        InstanceAdminClient._get_default_mtls_endpoint(api_endpoint)
-        == api_mtls_endpoint
-    )
-    assert (
-        InstanceAdminClient._get_default_mtls_endpoint(api_mtls_endpoint)
-        == api_mtls_endpoint
-    )
-    assert (
-        InstanceAdminClient._get_default_mtls_endpoint(sandbox_endpoint)
-        == sandbox_mtls_endpoint
-    )
-    assert (
-        InstanceAdminClient._get_default_mtls_endpoint(sandbox_mtls_endpoint)
-        == sandbox_mtls_endpoint
-    )
-    assert (
-        InstanceAdminClient._get_default_mtls_endpoint(non_googleapi) == non_googleapi
-    )
-
-
-def test__read_environment_variables():
-    assert InstanceAdminClient._read_environment_variables() == (False, "auto", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        assert InstanceAdminClient._read_environment_variables() == (True, "auto", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}):
-        assert InstanceAdminClient._read_environment_variables() == (
-            False,
-            "auto",
-            None,
-        )
-
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "Unsupported"}
-    ):
-        if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-            with pytest.raises(ValueError) as excinfo:
-                InstanceAdminClient._read_environment_variables()
-            assert (
-                str(excinfo.value)
-                == "Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be either `true` or `false`"
-            )
-        else:
-            assert InstanceAdminClient._read_environment_variables() == (
-                False,
-                "auto",
-                None,
-            )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        assert InstanceAdminClient._read_environment_variables() == (
-            False,
-            "never",
-            None,
-        )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        assert InstanceAdminClient._read_environment_variables() == (
-            False,
-            "always",
-            None,
-        )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "auto"}):
-        assert InstanceAdminClient._read_environment_variables() == (
-            False,
-            "auto",
-            None,
-        )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            InstanceAdminClient._read_environment_variables()
-    assert (
-        str(excinfo.value)
-        == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-    )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_CLOUD_UNIVERSE_DOMAIN": "foo.com"}):
-        assert InstanceAdminClient._read_environment_variables() == (
-            False,
-            "auto",
-            "foo.com",
-        )
-
-
-def test_use_client_cert_effective():
-    # Test case 1: Test when `should_use_client_cert` returns True.
-    # We mock the `should_use_client_cert` function to simulate a scenario where
-    # the google-auth library supports automatic mTLS and determines that a
-    # client certificate should be used.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch(
-            "google.auth.transport.mtls.should_use_client_cert", return_value=True
-        ):
-            assert InstanceAdminClient._use_client_cert_effective() is True
-
-    # Test case 2: Test when `should_use_client_cert` returns False.
-    # We mock the `should_use_client_cert` function to simulate a scenario where
-    # the google-auth library supports automatic mTLS and determines that a
-    # client certificate should NOT be used.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch(
-            "google.auth.transport.mtls.should_use_client_cert", return_value=False
-        ):
-            assert InstanceAdminClient._use_client_cert_effective() is False
-
-    # Test case 3: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "true".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-            assert InstanceAdminClient._use_client_cert_effective() is True
-
-    # Test case 4: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "false".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}
-        ):
-            assert InstanceAdminClient._use_client_cert_effective() is False
-
-    # Test case 5: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "True".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "True"}):
-            assert InstanceAdminClient._use_client_cert_effective() is True
-
-    # Test case 6: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "False".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "False"}
-        ):
-            assert InstanceAdminClient._use_client_cert_effective() is False
-
-    # Test case 7: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "TRUE".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "TRUE"}):
-            assert InstanceAdminClient._use_client_cert_effective() is True
-
-    # Test case 8: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "FALSE".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "FALSE"}
-        ):
-            assert InstanceAdminClient._use_client_cert_effective() is False
-
-    # Test case 9: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not set.
-    # In this case, the method should return False, which is the default value.
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, clear=True):
-            assert InstanceAdminClient._use_client_cert_effective() is False
-
-    # Test case 10: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to an invalid value.
-    # The method should raise a ValueError as the environment variable must be either
-    # "true" or "false".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "unsupported"}
-        ):
-            with pytest.raises(ValueError):
-                InstanceAdminClient._use_client_cert_effective()
-
-    # Test case 11: Test when `should_use_client_cert` is available and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to an invalid value.
-    # The method should return False as the environment variable is set to an invalid value.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "unsupported"}
-        ):
-            assert InstanceAdminClient._use_client_cert_effective() is False
-
-    # Test case 12: Test when `should_use_client_cert` is available and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is unset. Also,
-    # the GOOGLE_API_CONFIG environment variable is unset.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": ""}):
-            with mock.patch.dict(os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": ""}):
-                assert InstanceAdminClient._use_client_cert_effective() is False
-
-
-def test__get_client_cert_source():
-    mock_provided_cert_source = mock.Mock()
-    mock_default_cert_source = mock.Mock()
-
-    assert InstanceAdminClient._get_client_cert_source(None, False) is None
-    assert (
-        InstanceAdminClient._get_client_cert_source(mock_provided_cert_source, False)
-        is None
-    )
-    assert (
-        InstanceAdminClient._get_client_cert_source(mock_provided_cert_source, True)
-        == mock_provided_cert_source
-    )
-
-    with mock.patch(
-        "google.auth.transport.mtls.has_default_client_cert_source", return_value=True
-    ):
-        with mock.patch(
-            "google.auth.transport.mtls.default_client_cert_source",
-            return_value=mock_default_cert_source,
-        ):
-            assert (
-                InstanceAdminClient._get_client_cert_source(None, True)
-                is mock_default_cert_source
-            )
-            assert (
-                InstanceAdminClient._get_client_cert_source(
-                    mock_provided_cert_source, "true"
-                )
-                is mock_provided_cert_source
-            )
-
-
-@mock.patch.object(
-    InstanceAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminClient),
-)
-@mock.patch.object(
-    InstanceAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminAsyncClient),
-)
-def test__get_api_endpoint():
-    api_override = "foo.com"
-    mock_client_cert_source = mock.Mock()
-    default_universe = InstanceAdminClient._DEFAULT_UNIVERSE
-    default_endpoint = InstanceAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=default_universe
-    )
-    mock_universe = "bar.com"
-    mock_endpoint = InstanceAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=mock_universe
-    )
-
-    assert (
-        InstanceAdminClient._get_api_endpoint(
-            api_override, mock_client_cert_source, default_universe, "always"
-        )
-        == api_override
-    )
-    assert (
-        InstanceAdminClient._get_api_endpoint(
-            None, mock_client_cert_source, default_universe, "auto"
-        )
-        == InstanceAdminClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        InstanceAdminClient._get_api_endpoint(None, None, default_universe, "auto")
-        == default_endpoint
-    )
-    assert (
-        InstanceAdminClient._get_api_endpoint(None, None, default_universe, "always")
-        == InstanceAdminClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        InstanceAdminClient._get_api_endpoint(
-            None, mock_client_cert_source, default_universe, "always"
-        )
-        == InstanceAdminClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        InstanceAdminClient._get_api_endpoint(None, None, mock_universe, "never")
-        == mock_endpoint
-    )
-    assert (
-        InstanceAdminClient._get_api_endpoint(None, None, default_universe, "never")
-        == default_endpoint
-    )
-
-    with pytest.raises(MutualTLSChannelError) as excinfo:
-        InstanceAdminClient._get_api_endpoint(
-            None, mock_client_cert_source, mock_universe, "auto"
-        )
-    assert (
-        str(excinfo.value)
-        == "mTLS is not supported in any universe other than googleapis.com."
-    )
-
-
-def test__get_universe_domain():
-    client_universe_domain = "foo.com"
-    universe_domain_env = "bar.com"
-
-    assert (
-        InstanceAdminClient._get_universe_domain(
-            client_universe_domain, universe_domain_env
-        )
-        == client_universe_domain
-    )
-    assert (
-        InstanceAdminClient._get_universe_domain(None, universe_domain_env)
-        == universe_domain_env
-    )
-    assert (
-        InstanceAdminClient._get_universe_domain(None, None)
-        == InstanceAdminClient._DEFAULT_UNIVERSE
-    )
-
-    with pytest.raises(ValueError) as excinfo:
-        InstanceAdminClient._get_universe_domain("", None)
-    assert str(excinfo.value) == "Universe Domain cannot be an empty string."
-
-
-@pytest.mark.parametrize(
-    "error_code,cred_info_json,show_cred_info",
-    [
-        (401, CRED_INFO_JSON, True),
-        (403, CRED_INFO_JSON, True),
-        (404, CRED_INFO_JSON, True),
-        (500, CRED_INFO_JSON, False),
-        (401, None, False),
-        (403, None, False),
-        (404, None, False),
-        (500, None, False),
-    ],
-)
-def test__add_cred_info_for_auth_errors(error_code, cred_info_json, show_cred_info):
-    cred = mock.Mock(["get_cred_info"])
-    cred.get_cred_info = mock.Mock(return_value=cred_info_json)
-    client = InstanceAdminClient(credentials=cred)
-    client._transport._credentials = cred
-
-    error = core_exceptions.GoogleAPICallError("message", details=["foo"])
-    error.code = error_code
-
-    client._add_cred_info_for_auth_errors(error)
-    if show_cred_info:
-        assert error.details == ["foo", CRED_INFO_STRING]
-    else:
-        assert error.details == ["foo"]
-
-
-@pytest.mark.parametrize("error_code", [401, 403, 404, 500])
-def test__add_cred_info_for_auth_errors_no_get_cred_info(error_code):
-    cred = mock.Mock([])
-    assert not hasattr(cred, "get_cred_info")
-    client = InstanceAdminClient(credentials=cred)
-    client._transport._credentials = cred
-
-    error = core_exceptions.GoogleAPICallError("message", details=[])
-    error.code = error_code
-
-    client._add_cred_info_for_auth_errors(error)
-    assert error.details == []
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_name",
-    [
-        (InstanceAdminClient, "grpc"),
-        (InstanceAdminAsyncClient, "grpc_asyncio"),
-        (InstanceAdminClient, "rest"),
-    ],
-)
-def test_instance_admin_client_from_service_account_info(client_class, transport_name):
-    creds = ga_credentials.AnonymousCredentials()
-    with mock.patch.object(
-        service_account.Credentials, "from_service_account_info"
-    ) as factory:
-        factory.return_value = creds
-        info = {"valid": True}
-        client = client_class.from_service_account_info(info, transport=transport_name)
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        assert client.transport._host == (
-            "spanner.googleapis.com:443"
-            if transport_name in ["grpc", "grpc_asyncio"]
-            else "https://spanner.googleapis.com"
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class,transport_name",
-    [
-        (transports.InstanceAdminGrpcTransport, "grpc"),
-        (transports.InstanceAdminGrpcAsyncIOTransport, "grpc_asyncio"),
-        (transports.InstanceAdminRestTransport, "rest"),
-    ],
-)
-def test_instance_admin_client_service_account_always_use_jwt(
-    transport_class, transport_name
-):
-    with mock.patch.object(
-        service_account.Credentials, "with_always_use_jwt_access", create=True
-    ) as use_jwt:
-        creds = service_account.Credentials(None, None, None)
-        transport = transport_class(credentials=creds, always_use_jwt_access=True)
-        use_jwt.assert_called_once_with(True)
-
-    with mock.patch.object(
-        service_account.Credentials, "with_always_use_jwt_access", create=True
-    ) as use_jwt:
-        creds = service_account.Credentials(None, None, None)
-        transport = transport_class(credentials=creds, always_use_jwt_access=False)
-        use_jwt.assert_not_called()
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_name",
-    [
-        (InstanceAdminClient, "grpc"),
-        (InstanceAdminAsyncClient, "grpc_asyncio"),
-        (InstanceAdminClient, "rest"),
-    ],
-)
-def test_instance_admin_client_from_service_account_file(client_class, transport_name):
-    creds = ga_credentials.AnonymousCredentials()
-    with mock.patch.object(
-        service_account.Credentials, "from_service_account_file"
-    ) as factory:
-        factory.return_value = creds
-        client = client_class.from_service_account_file(
-            "dummy/file/path.json", transport=transport_name
-        )
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        client = client_class.from_service_account_json(
-            "dummy/file/path.json", transport=transport_name
-        )
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        assert client.transport._host == (
-            "spanner.googleapis.com:443"
-            if transport_name in ["grpc", "grpc_asyncio"]
-            else "https://spanner.googleapis.com"
-        )
-
-
-def test_instance_admin_client_get_transport_class():
-    transport = InstanceAdminClient.get_transport_class()
-    available_transports = [
-        transports.InstanceAdminGrpcTransport,
-        transports.InstanceAdminRestTransport,
-    ]
-    assert transport in available_transports
-
-    transport = InstanceAdminClient.get_transport_class("grpc")
-    assert transport == transports.InstanceAdminGrpcTransport
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name",
-    [
-        (InstanceAdminClient, transports.InstanceAdminGrpcTransport, "grpc"),
-        (
-            InstanceAdminAsyncClient,
-            transports.InstanceAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-        ),
-        (InstanceAdminClient, transports.InstanceAdminRestTransport, "rest"),
-    ],
-)
-@mock.patch.object(
-    InstanceAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminClient),
-)
-@mock.patch.object(
-    InstanceAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminAsyncClient),
-)
-def test_instance_admin_client_client_options(
-    client_class, transport_class, transport_name
-):
-    # Check that if channel is provided we won't create a new one.
-    with mock.patch.object(InstanceAdminClient, "get_transport_class") as gtc:
-        transport = transport_class(credentials=ga_credentials.AnonymousCredentials())
-        client = client_class(transport=transport)
-        gtc.assert_not_called()
-
-    # Check that if channel is provided via str we will create a new one.
-    with mock.patch.object(InstanceAdminClient, "get_transport_class") as gtc:
-        client = client_class(transport=transport_name)
-        gtc.assert_called()
-
-    # Check the case api_endpoint is provided.
-    options = client_options.ClientOptions(api_endpoint="squid.clam.whelk")
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(transport=transport_name, client_options=options)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host="squid.clam.whelk",
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT is
-    # "never".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(transport=transport_name)
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                ),
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT is
-    # "always".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(transport=transport_name)
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=client.DEFAULT_MTLS_ENDPOINT,
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT has
-    # unsupported value.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            client = client_class(transport=transport_name)
-    assert (
-        str(excinfo.value)
-        == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-    )
-
-    # Check the case quota_project_id is provided
-    options = client_options.ClientOptions(quota_project_id="octopus")
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id="octopus",
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-    # Check the case api_endpoint is provided
-    options = client_options.ClientOptions(
-        api_audience="https://language.googleapis.com"
-    )
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience="https://language.googleapis.com",
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,use_client_cert_env",
-    [
-        (InstanceAdminClient, transports.InstanceAdminGrpcTransport, "grpc", "true"),
-        (
-            InstanceAdminAsyncClient,
-            transports.InstanceAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            "true",
-        ),
-        (InstanceAdminClient, transports.InstanceAdminGrpcTransport, "grpc", "false"),
-        (
-            InstanceAdminAsyncClient,
-            transports.InstanceAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            "false",
-        ),
-        (InstanceAdminClient, transports.InstanceAdminRestTransport, "rest", "true"),
-        (InstanceAdminClient, transports.InstanceAdminRestTransport, "rest", "false"),
-    ],
-)
-@mock.patch.object(
-    InstanceAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminClient),
-)
-@mock.patch.object(
-    InstanceAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminAsyncClient),
-)
-@mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "auto"})
-def test_instance_admin_client_mtls_env_auto(
-    client_class, transport_class, transport_name, use_client_cert_env
-):
-    # This tests the endpoint autoswitch behavior. Endpoint is autoswitched to the default
-    # mtls endpoint, if GOOGLE_API_USE_CLIENT_CERTIFICATE is "true" and client cert exists.
-
-    # Check the case client_cert_source is provided. Whether client cert is used depends on
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE value.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        options = client_options.ClientOptions(
-            client_cert_source=client_cert_source_callback
-        )
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(client_options=options, transport=transport_name)
-
-            if use_client_cert_env == "false":
-                expected_client_cert_source = None
-                expected_host = client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                )
-            else:
-                expected_client_cert_source = client_cert_source_callback
-                expected_host = client.DEFAULT_MTLS_ENDPOINT
-
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=expected_host,
-                scopes=None,
-                client_cert_source_for_mtls=expected_client_cert_source,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
-
-    # Check the case ADC client cert is provided. Whether client cert is used depends on
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE value.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            with mock.patch(
-                "google.auth.transport.mtls.has_default_client_cert_source",
-                return_value=True,
-            ):
-                with mock.patch(
-                    "google.auth.transport.mtls.default_client_cert_source",
-                    return_value=client_cert_source_callback,
-                ):
-                    if use_client_cert_env == "false":
-                        expected_host = client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                            UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                        )
-                        expected_client_cert_source = None
-                    else:
-                        expected_host = client.DEFAULT_MTLS_ENDPOINT
-                        expected_client_cert_source = client_cert_source_callback
-
-                    patched.return_value = None
-                    client = client_class(transport=transport_name)
-                    patched.assert_called_once_with(
-                        credentials=None,
-                        credentials_file=None,
-                        host=expected_host,
-                        scopes=None,
-                        client_cert_source_for_mtls=expected_client_cert_source,
-                        quota_project_id=None,
-                        client_info=transports.base.DEFAULT_CLIENT_INFO,
-                        always_use_jwt_access=True,
-                        api_audience=None,
-                    )
-
-    # Check the case client_cert_source and ADC client cert are not provided.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            with mock.patch(
-                "google.auth.transport.mtls.has_default_client_cert_source",
-                return_value=False,
-            ):
-                patched.return_value = None
-                client = client_class(transport=transport_name)
-                patched.assert_called_once_with(
-                    credentials=None,
-                    credentials_file=None,
-                    host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                        UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                    ),
-                    scopes=None,
-                    client_cert_source_for_mtls=None,
-                    quota_project_id=None,
-                    client_info=transports.base.DEFAULT_CLIENT_INFO,
-                    always_use_jwt_access=True,
-                    api_audience=None,
-                )
-
-
-@pytest.mark.parametrize(
-    "client_class", [InstanceAdminClient, InstanceAdminAsyncClient]
-)
-@mock.patch.object(
-    InstanceAdminClient,
-    "DEFAULT_ENDPOINT",
-    modify_default_endpoint(InstanceAdminClient),
-)
-@mock.patch.object(
-    InstanceAdminAsyncClient,
-    "DEFAULT_ENDPOINT",
-    modify_default_endpoint(InstanceAdminAsyncClient),
-)
-def test_instance_admin_client_get_mtls_endpoint_and_cert_source(client_class):
-    mock_client_cert_source = mock.Mock()
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "true".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        mock_api_endpoint = "foo"
-        options = client_options.ClientOptions(
-            client_cert_source=mock_client_cert_source, api_endpoint=mock_api_endpoint
-        )
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-            options
-        )
-        assert api_endpoint == mock_api_endpoint
-        assert cert_source == mock_client_cert_source
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "false".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}):
-        mock_client_cert_source = mock.Mock()
-        mock_api_endpoint = "foo"
-        options = client_options.ClientOptions(
-            client_cert_source=mock_client_cert_source, api_endpoint=mock_api_endpoint
-        )
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-            options
-        )
-        assert api_endpoint == mock_api_endpoint
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "Unsupported".
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "Unsupported"}
-    ):
-        if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-            mock_client_cert_source = mock.Mock()
-            mock_api_endpoint = "foo"
-            options = client_options.ClientOptions(
-                client_cert_source=mock_client_cert_source,
-                api_endpoint=mock_api_endpoint,
-            )
-            api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-                options
-            )
-            assert api_endpoint == mock_api_endpoint
-            assert cert_source is None
-
-    # Test cases for mTLS enablement when GOOGLE_API_USE_CLIENT_CERTIFICATE is unset.
-    test_cases = [
-        (
-            # With workloads present in config, mTLS is enabled.
-            {
-                "version": 1,
-                "cert_configs": {
-                    "workload": {
-                        "cert_path": "path/to/cert/file",
-                        "key_path": "path/to/key/file",
-                    }
-                },
-            },
-            mock_client_cert_source,
-        ),
-        (
-            # With workloads not present in config, mTLS is disabled.
-            {
-                "version": 1,
-                "cert_configs": {},
-            },
-            None,
-        ),
-    ]
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        for config_data, expected_cert_source in test_cases:
-            env = os.environ.copy()
-            env.pop("GOOGLE_API_USE_CLIENT_CERTIFICATE", None)
-            with mock.patch.dict(os.environ, env, clear=True):
-                config_filename = "mock_certificate_config.json"
-                config_file_content = json.dumps(config_data)
-                m = mock.mock_open(read_data=config_file_content)
-                with mock.patch("builtins.open", m):
-                    with mock.patch.dict(
-                        os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": config_filename}
-                    ):
-                        mock_api_endpoint = "foo"
-                        options = client_options.ClientOptions(
-                            client_cert_source=mock_client_cert_source,
-                            api_endpoint=mock_api_endpoint,
-                        )
-                        (
-                            api_endpoint,
-                            cert_source,
-                        ) = client_class.get_mtls_endpoint_and_cert_source(options)
-                        assert api_endpoint == mock_api_endpoint
-                        assert cert_source is expected_cert_source
-
-    # Test cases for mTLS enablement when GOOGLE_API_USE_CLIENT_CERTIFICATE is unset(empty).
-    test_cases = [
-        (
-            # With workloads present in config, mTLS is enabled.
-            {
-                "version": 1,
-                "cert_configs": {
-                    "workload": {
-                        "cert_path": "path/to/cert/file",
-                        "key_path": "path/to/key/file",
-                    }
-                },
-            },
-            mock_client_cert_source,
-        ),
-        (
-            # With workloads not present in config, mTLS is disabled.
-            {
-                "version": 1,
-                "cert_configs": {},
-            },
-            None,
-        ),
-    ]
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        for config_data, expected_cert_source in test_cases:
-            env = os.environ.copy()
-            env.pop("GOOGLE_API_USE_CLIENT_CERTIFICATE", "")
-            with mock.patch.dict(os.environ, env, clear=True):
-                config_filename = "mock_certificate_config.json"
-                config_file_content = json.dumps(config_data)
-                m = mock.mock_open(read_data=config_file_content)
-                with mock.patch("builtins.open", m):
-                    with mock.patch.dict(
-                        os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": config_filename}
-                    ):
-                        mock_api_endpoint = "foo"
-                        options = client_options.ClientOptions(
-                            client_cert_source=mock_client_cert_source,
-                            api_endpoint=mock_api_endpoint,
-                        )
-                        (
-                            api_endpoint,
-                            cert_source,
-                        ) = client_class.get_mtls_endpoint_and_cert_source(options)
-                        assert api_endpoint == mock_api_endpoint
-                        assert cert_source is expected_cert_source
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "never".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-        assert api_endpoint == client_class.DEFAULT_ENDPOINT
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "always".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-        assert api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "auto" and default cert doesn't exist.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.mtls.has_default_client_cert_source",
-            return_value=False,
-        ):
-            api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-            assert api_endpoint == client_class.DEFAULT_ENDPOINT
-            assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "auto" and default cert exists.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.mtls.has_default_client_cert_source",
-            return_value=True,
-        ):
-            with mock.patch(
-                "google.auth.transport.mtls.default_client_cert_source",
-                return_value=mock_client_cert_source,
-            ):
-                (
-                    api_endpoint,
-                    cert_source,
-                ) = client_class.get_mtls_endpoint_and_cert_source()
-                assert api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-                assert cert_source == mock_client_cert_source
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT has
-    # unsupported value.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            client_class.get_mtls_endpoint_and_cert_source()
-
-        assert (
-            str(excinfo.value)
-            == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class", [InstanceAdminClient, InstanceAdminAsyncClient]
-)
-@mock.patch.object(
-    InstanceAdminClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminClient),
-)
-@mock.patch.object(
-    InstanceAdminAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(InstanceAdminAsyncClient),
-)
-def test_instance_admin_client_client_api_endpoint(client_class):
-    mock_client_cert_source = client_cert_source_callback
-    api_override = "foo.com"
-    default_universe = InstanceAdminClient._DEFAULT_UNIVERSE
-    default_endpoint = InstanceAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=default_universe
-    )
-    mock_universe = "bar.com"
-    mock_endpoint = InstanceAdminClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=mock_universe
-    )
-
-    # If ClientOptions.api_endpoint is set and GOOGLE_API_USE_CLIENT_CERTIFICATE="true",
-    # use ClientOptions.api_endpoint as the api endpoint regardless.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.requests.AuthorizedSession.configure_mtls_channel"
-        ):
-            options = client_options.ClientOptions(
-                client_cert_source=mock_client_cert_source, api_endpoint=api_override
-            )
-            client = client_class(
-                client_options=options,
-                credentials=ga_credentials.AnonymousCredentials(),
-            )
-            assert client.api_endpoint == api_override
-
-    # If ClientOptions.api_endpoint is not set and GOOGLE_API_USE_MTLS_ENDPOINT="never",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with GDU as the api endpoint.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        client = client_class(credentials=ga_credentials.AnonymousCredentials())
-        assert client.api_endpoint == default_endpoint
-
-    # If ClientOptions.api_endpoint is not set and GOOGLE_API_USE_MTLS_ENDPOINT="always",
-    # use the DEFAULT_MTLS_ENDPOINT as the api endpoint.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        client = client_class(credentials=ga_credentials.AnonymousCredentials())
-        assert client.api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-
-    # If ClientOptions.api_endpoint is not set, GOOGLE_API_USE_MTLS_ENDPOINT="auto" (default),
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE="false" (default), default cert source doesn't exist,
-    # and ClientOptions.universe_domain="bar.com",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with universe domain as the api endpoint.
-    options = client_options.ClientOptions()
-    universe_exists = hasattr(options, "universe_domain")
-    if universe_exists:
-        options = client_options.ClientOptions(universe_domain=mock_universe)
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-    else:
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-    assert client.api_endpoint == (
-        mock_endpoint if universe_exists else default_endpoint
-    )
-    assert client.universe_domain == (
-        mock_universe if universe_exists else default_universe
-    )
-
-    # If ClientOptions does not have a universe domain attribute and GOOGLE_API_USE_MTLS_ENDPOINT="never",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with GDU as the api endpoint.
-    options = client_options.ClientOptions()
-    if hasattr(options, "universe_domain"):
-        delattr(options, "universe_domain")
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-        assert client.api_endpoint == default_endpoint
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name",
-    [
-        (InstanceAdminClient, transports.InstanceAdminGrpcTransport, "grpc"),
-        (
-            InstanceAdminAsyncClient,
-            transports.InstanceAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-        ),
-        (InstanceAdminClient, transports.InstanceAdminRestTransport, "rest"),
-    ],
-)
-def test_instance_admin_client_client_options_scopes(
-    client_class, transport_class, transport_name
-):
-    # Check the case scopes are provided.
-    options = client_options.ClientOptions(
-        scopes=["1", "2"],
-    )
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=["1", "2"],
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,grpc_helpers",
-    [
-        (
-            InstanceAdminClient,
-            transports.InstanceAdminGrpcTransport,
-            "grpc",
-            grpc_helpers,
-        ),
-        (
-            InstanceAdminAsyncClient,
-            transports.InstanceAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            grpc_helpers_async,
-        ),
-        (InstanceAdminClient, transports.InstanceAdminRestTransport, "rest", None),
-    ],
-)
-def test_instance_admin_client_client_options_credentials_file(
-    client_class, transport_class, transport_name, grpc_helpers
-):
-    # Check the case credentials file is provided.
-    options = client_options.ClientOptions(credentials_file="credentials.json")
-
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file="credentials.json",
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-
-def test_instance_admin_client_client_options_from_dict():
-    with mock.patch(
-        "google.cloud.spanner_admin_instance_v1.services.instance_admin.transports.InstanceAdminGrpcTransport.__init__"
-    ) as grpc_transport:
-        grpc_transport.return_value = None
-        client = InstanceAdminClient(
-            client_options={"api_endpoint": "squid.clam.whelk"}
-        )
-        grpc_transport.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host="squid.clam.whelk",
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,grpc_helpers",
-    [
-        (
-            InstanceAdminClient,
-            transports.InstanceAdminGrpcTransport,
-            "grpc",
-            grpc_helpers,
-        ),
-        (
-            InstanceAdminAsyncClient,
-            transports.InstanceAdminGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            grpc_helpers_async,
-        ),
-    ],
-)
-def test_instance_admin_client_create_channel_credentials_file(
-    client_class, transport_class, transport_name, grpc_helpers
-):
-    # Check the case credentials file is provided.
-    options = client_options.ClientOptions(credentials_file="credentials.json")
-
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file="credentials.json",
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-        )
-
-    # test that the credentials from file are saved and used as the credentials.
-    with mock.patch.object(
-        google.auth, "load_credentials_from_file", autospec=True
-    ) as load_creds, mock.patch.object(
-        google.auth, "default", autospec=True
-    ) as adc, mock.patch.object(
-        grpc_helpers, "create_channel"
-    ) as create_channel:
-        creds = ga_credentials.AnonymousCredentials()
-        file_creds = ga_credentials.AnonymousCredentials()
-        load_creds.return_value = (file_creds, None)
-        adc.return_value = (creds, None)
-        client = client_class(client_options=options, transport=transport_name)
-        create_channel.assert_called_with(
-            "spanner.googleapis.com:443",
-            credentials=file_creds,
-            credentials_file=None,
-            quota_project_id=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            scopes=None,
-            default_host="spanner.googleapis.com",
-            ssl_credentials=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstanceConfigsRequest,
-        dict,
-    ],
-)
-def test_list_instance_configs(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstanceConfigsResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_instance_configs(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstanceConfigsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstanceConfigsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_instance_configs_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.ListInstanceConfigsRequest(
-        parent="parent_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_instance_configs(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.ListInstanceConfigsRequest(
-            parent="parent_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_instance_configs_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_configs
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_configs
-        ] = mock_rpc
-        request = {}
-        client.list_instance_configs(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_configs(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_instance_configs
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_instance_configs
-        ] = mock_rpc
-
-        request = {}
-        await client.list_instance_configs(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_instance_configs(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.ListInstanceConfigsRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_instance_configs(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstanceConfigsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstanceConfigsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_async_from_dict():
-    await test_list_instance_configs_async(request_type=dict)
-
-
-def test_list_instance_configs_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstanceConfigsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.ListInstanceConfigsResponse()
-        client.list_instance_configs(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstanceConfigsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigsResponse()
-        )
-        await client.list_instance_configs(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_instance_configs_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstanceConfigsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_instance_configs(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_instance_configs_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_configs(
-            spanner_instance_admin.ListInstanceConfigsRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstanceConfigsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_instance_configs(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_instance_configs(
-            spanner_instance_admin.ListInstanceConfigsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_configs_pager(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_instance_configs(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(
-            isinstance(i, spanner_instance_admin.InstanceConfig) for i in results
-        )
-
-
-def test_list_instance_configs_pages(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_instance_configs(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_async_pager():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_instance_configs(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(
-            isinstance(i, spanner_instance_admin.InstanceConfig) for i in responses
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_instance_configs_async_pages():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_instance_configs(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.GetInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_get_instance_config(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.InstanceConfig(
-            name="name_value",
-            display_name="display_name_value",
-            config_type=spanner_instance_admin.InstanceConfig.Type.GOOGLE_MANAGED,
-            base_config="base_config_value",
-            etag="etag_value",
-            leader_options=["leader_options_value"],
-            reconciling=True,
-            state=spanner_instance_admin.InstanceConfig.State.CREATING,
-            free_instance_availability=spanner_instance_admin.InstanceConfig.FreeInstanceAvailability.AVAILABLE,
-            quorum_type=spanner_instance_admin.InstanceConfig.QuorumType.REGION,
-            storage_limit_per_processing_unit=3540,
-        )
-        response = client.get_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.GetInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.InstanceConfig)
-    assert response.name == "name_value"
-    assert response.display_name == "display_name_value"
-    assert (
-        response.config_type
-        == spanner_instance_admin.InstanceConfig.Type.GOOGLE_MANAGED
-    )
-    assert response.base_config == "base_config_value"
-    assert response.etag == "etag_value"
-    assert response.leader_options == ["leader_options_value"]
-    assert response.reconciling is True
-    assert response.state == spanner_instance_admin.InstanceConfig.State.CREATING
-    assert (
-        response.free_instance_availability
-        == spanner_instance_admin.InstanceConfig.FreeInstanceAvailability.AVAILABLE
-    )
-    assert (
-        response.quorum_type == spanner_instance_admin.InstanceConfig.QuorumType.REGION
-    )
-    assert response.storage_limit_per_processing_unit == 3540
-
-
-def test_get_instance_config_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.GetInstanceConfigRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_instance_config(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.GetInstanceConfigRequest(
-            name="name_value",
-        )
-
-
-def test_get_instance_config_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.get_instance_config in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_instance_config
-        ] = mock_rpc
-        request = {}
-        client.get_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_instance_config_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_instance_config
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_instance_config
-        ] = mock_rpc
-
-        request = {}
-        await client.get_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_instance_config_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.GetInstanceConfigRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstanceConfig(
-                name="name_value",
-                display_name="display_name_value",
-                config_type=spanner_instance_admin.InstanceConfig.Type.GOOGLE_MANAGED,
-                base_config="base_config_value",
-                etag="etag_value",
-                leader_options=["leader_options_value"],
-                reconciling=True,
-                state=spanner_instance_admin.InstanceConfig.State.CREATING,
-                free_instance_availability=spanner_instance_admin.InstanceConfig.FreeInstanceAvailability.AVAILABLE,
-                quorum_type=spanner_instance_admin.InstanceConfig.QuorumType.REGION,
-                storage_limit_per_processing_unit=3540,
-            )
-        )
-        response = await client.get_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.GetInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.InstanceConfig)
-    assert response.name == "name_value"
-    assert response.display_name == "display_name_value"
-    assert (
-        response.config_type
-        == spanner_instance_admin.InstanceConfig.Type.GOOGLE_MANAGED
-    )
-    assert response.base_config == "base_config_value"
-    assert response.etag == "etag_value"
-    assert response.leader_options == ["leader_options_value"]
-    assert response.reconciling is True
-    assert response.state == spanner_instance_admin.InstanceConfig.State.CREATING
-    assert (
-        response.free_instance_availability
-        == spanner_instance_admin.InstanceConfig.FreeInstanceAvailability.AVAILABLE
-    )
-    assert (
-        response.quorum_type == spanner_instance_admin.InstanceConfig.QuorumType.REGION
-    )
-    assert response.storage_limit_per_processing_unit == 3540
-
-
-@pytest.mark.asyncio
-async def test_get_instance_config_async_from_dict():
-    await test_get_instance_config_async(request_type=dict)
-
-
-def test_get_instance_config_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.GetInstanceConfigRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.InstanceConfig()
-        client.get_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_instance_config_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.GetInstanceConfigRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstanceConfig()
-        )
-        await client.get_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_get_instance_config_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.InstanceConfig()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_instance_config(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_get_instance_config_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_instance_config(
-            spanner_instance_admin.GetInstanceConfigRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_instance_config_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.InstanceConfig()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstanceConfig()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_instance_config(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_instance_config_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_instance_config(
-            spanner_instance_admin.GetInstanceConfigRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.CreateInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_create_instance_config(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.create_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.CreateInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_create_instance_config_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.CreateInstanceConfigRequest(
-        parent="parent_value",
-        instance_config_id="instance_config_id_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.create_instance_config(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.CreateInstanceConfigRequest(
-            parent="parent_value",
-            instance_config_id="instance_config_id_value",
-        )
-
-
-def test_create_instance_config_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.create_instance_config
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.create_instance_config
-        ] = mock_rpc
-        request = {}
-        client.create_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_instance_config_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.create_instance_config
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.create_instance_config
-        ] = mock_rpc
-
-        request = {}
-        await client.create_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.create_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_instance_config_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.CreateInstanceConfigRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.create_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.CreateInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_create_instance_config_async_from_dict():
-    await test_create_instance_config_async(request_type=dict)
-
-
-def test_create_instance_config_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.CreateInstanceConfigRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_create_instance_config_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.CreateInstanceConfigRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.create_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_create_instance_config_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.create_instance_config(
-            parent="parent_value",
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            instance_config_id="instance_config_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].instance_config
-        mock_val = spanner_instance_admin.InstanceConfig(name="name_value")
-        assert arg == mock_val
-        arg = args[0].instance_config_id
-        mock_val = "instance_config_id_value"
-        assert arg == mock_val
-
-
-def test_create_instance_config_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_instance_config(
-            spanner_instance_admin.CreateInstanceConfigRequest(),
-            parent="parent_value",
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            instance_config_id="instance_config_id_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_create_instance_config_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.create_instance_config(
-            parent="parent_value",
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            instance_config_id="instance_config_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].instance_config
-        mock_val = spanner_instance_admin.InstanceConfig(name="name_value")
-        assert arg == mock_val
-        arg = args[0].instance_config_id
-        mock_val = "instance_config_id_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_create_instance_config_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.create_instance_config(
-            spanner_instance_admin.CreateInstanceConfigRequest(),
-            parent="parent_value",
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            instance_config_id="instance_config_id_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.UpdateInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_update_instance_config(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.update_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.UpdateInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_update_instance_config_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.UpdateInstanceConfigRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.update_instance_config(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.UpdateInstanceConfigRequest()
-
-
-def test_update_instance_config_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_instance_config
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_instance_config
-        ] = mock_rpc
-        request = {}
-        client.update_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_instance_config_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.update_instance_config
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.update_instance_config
-        ] = mock_rpc
-
-        request = {}
-        await client.update_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.update_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_instance_config_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.UpdateInstanceConfigRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.update_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.UpdateInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_update_instance_config_async_from_dict():
-    await test_update_instance_config_async(request_type=dict)
-
-
-def test_update_instance_config_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.UpdateInstanceConfigRequest()
-
-    request.instance_config.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "instance_config.name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_update_instance_config_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.UpdateInstanceConfigRequest()
-
-    request.instance_config.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.update_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "instance_config.name=name_value",
-    ) in kw["metadata"]
-
-
-def test_update_instance_config_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.update_instance_config(
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].instance_config
-        mock_val = spanner_instance_admin.InstanceConfig(name="name_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-def test_update_instance_config_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_instance_config(
-            spanner_instance_admin.UpdateInstanceConfigRequest(),
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.asyncio
-async def test_update_instance_config_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.update_instance_config(
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].instance_config
-        mock_val = spanner_instance_admin.InstanceConfig(name="name_value")
-        assert arg == mock_val
-        arg = args[0].update_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_update_instance_config_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.update_instance_config(
-            spanner_instance_admin.UpdateInstanceConfigRequest(),
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.DeleteInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_delete_instance_config(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.DeleteInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_instance_config_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.DeleteInstanceConfigRequest(
-        name="name_value",
-        etag="etag_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.delete_instance_config(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.DeleteInstanceConfigRequest(
-            name="name_value",
-            etag="etag_value",
-        )
-
-
-def test_delete_instance_config_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.delete_instance_config
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.delete_instance_config
-        ] = mock_rpc
-        request = {}
-        client.delete_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_config_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.delete_instance_config
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.delete_instance_config
-        ] = mock_rpc
-
-        request = {}
-        await client.delete_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.delete_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_config_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.DeleteInstanceConfigRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.DeleteInstanceConfigRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_config_async_from_dict():
-    await test_delete_instance_config_async(request_type=dict)
-
-
-def test_delete_instance_config_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.DeleteInstanceConfigRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        call.return_value = None
-        client.delete_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_config_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.DeleteInstanceConfigRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_delete_instance_config_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.delete_instance_config(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_delete_instance_config_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_instance_config(
-            spanner_instance_admin.DeleteInstanceConfigRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_config_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.delete_instance_config(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_config_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.delete_instance_config(
-            spanner_instance_admin.DeleteInstanceConfigRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstanceConfigOperationsRequest,
-        dict,
-    ],
-)
-def test_list_instance_config_operations(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstanceConfigOperationsResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_instance_config_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstanceConfigOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_instance_config_operations_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.ListInstanceConfigOperationsRequest(
-        parent="parent_value",
-        filter="filter_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_instance_config_operations(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.ListInstanceConfigOperationsRequest(
-            parent="parent_value",
-            filter="filter_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_instance_config_operations_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_config_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_config_operations
-        ] = mock_rpc
-        request = {}
-        client.list_instance_config_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_config_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_instance_config_operations
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_instance_config_operations
-        ] = mock_rpc
-
-        request = {}
-        await client.list_instance_config_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_instance_config_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.ListInstanceConfigOperationsRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_instance_config_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstanceConfigOperationsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_async_from_dict():
-    await test_list_instance_config_operations_async(request_type=dict)
-
-
-def test_list_instance_config_operations_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        call.return_value = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse()
-        )
-        client.list_instance_config_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigOperationsResponse()
-        )
-        await client.list_instance_config_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_instance_config_operations_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_instance_config_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_instance_config_operations_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_config_operations(
-            spanner_instance_admin.ListInstanceConfigOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse()
-        )
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigOperationsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_instance_config_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_instance_config_operations(
-            spanner_instance_admin.ListInstanceConfigOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_config_operations_pager(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_instance_config_operations(
-            request={}, retry=retry, timeout=timeout
-        )
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-
-def test_list_instance_config_operations_pages(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_instance_config_operations(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_async_pager():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_instance_config_operations(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_async_pages():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_instance_config_operations(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstancesRequest,
-        dict,
-    ],
-)
-def test_list_instances(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstancesResponse(
-            next_page_token="next_page_token_value",
-            unreachable=["unreachable_value"],
-        )
-        response = client.list_instances(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstancesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancesPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable == ["unreachable_value"]
-
-
-def test_list_instances_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.ListInstancesRequest(
-        parent="parent_value",
-        page_token="page_token_value",
-        filter="filter_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_instances(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.ListInstancesRequest(
-            parent="parent_value",
-            page_token="page_token_value",
-            filter="filter_value",
-        )
-
-
-def test_list_instances_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_instances in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_instances] = mock_rpc
-        request = {}
-        client.list_instances(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instances(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instances_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_instances
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_instances
-        ] = mock_rpc
-
-        request = {}
-        await client.list_instances(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_instances(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instances_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.ListInstancesRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancesResponse(
-                next_page_token="next_page_token_value",
-                unreachable=["unreachable_value"],
-            )
-        )
-        response = await client.list_instances(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstancesRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancesAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable == ["unreachable_value"]
-
-
-@pytest.mark.asyncio
-async def test_list_instances_async_from_dict():
-    await test_list_instances_async(request_type=dict)
-
-
-def test_list_instances_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstancesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        call.return_value = spanner_instance_admin.ListInstancesResponse()
-        client.list_instances(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_instances_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstancesRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancesResponse()
-        )
-        await client.list_instances(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_instances_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstancesResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_instances(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_instances_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instances(
-            spanner_instance_admin.ListInstancesRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_instances_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstancesResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancesResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_instances(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_instances_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_instances(
-            spanner_instance_admin.ListInstancesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instances_pager(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_instances(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner_instance_admin.Instance) for i in results)
-
-
-def test_list_instances_pages(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_instances(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_instances_async_pager():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instances), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_instances(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, spanner_instance_admin.Instance) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_instances_async_pages():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instances), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_instances(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstancePartitionsRequest,
-        dict,
-    ],
-)
-def test_list_instance_partitions(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstancePartitionsResponse(
-            next_page_token="next_page_token_value",
-            unreachable=["unreachable_value"],
-        )
-        response = client.list_instance_partitions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstancePartitionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancePartitionsPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable == ["unreachable_value"]
-
-
-def test_list_instance_partitions_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.ListInstancePartitionsRequest(
-        parent="parent_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_instance_partitions(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.ListInstancePartitionsRequest(
-            parent="parent_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_instance_partitions_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_partitions
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_partitions
-        ] = mock_rpc
-        request = {}
-        client.list_instance_partitions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_partitions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_instance_partitions
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_instance_partitions
-        ] = mock_rpc
-
-        request = {}
-        await client.list_instance_partitions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_instance_partitions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.ListInstancePartitionsRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                next_page_token="next_page_token_value",
-                unreachable=["unreachable_value"],
-            )
-        )
-        response = await client.list_instance_partitions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstancePartitionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancePartitionsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable == ["unreachable_value"]
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_async_from_dict():
-    await test_list_instance_partitions_async(request_type=dict)
-
-
-def test_list_instance_partitions_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstancePartitionsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.ListInstancePartitionsResponse()
-        client.list_instance_partitions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstancePartitionsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionsResponse()
-        )
-        await client.list_instance_partitions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_instance_partitions_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstancePartitionsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_instance_partitions(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_instance_partitions_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_partitions(
-            spanner_instance_admin.ListInstancePartitionsRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.ListInstancePartitionsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_instance_partitions(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_instance_partitions(
-            spanner_instance_admin.ListInstancePartitionsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_partitions_pager(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_instance_partitions(
-            request={}, retry=retry, timeout=timeout
-        )
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(
-            isinstance(i, spanner_instance_admin.InstancePartition) for i in results
-        )
-
-
-def test_list_instance_partitions_pages(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_instance_partitions(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_async_pager():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_instance_partitions(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(
-            isinstance(i, spanner_instance_admin.InstancePartition) for i in responses
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partitions_async_pages():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_instance_partitions(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.GetInstanceRequest,
-        dict,
-    ],
-)
-def test_get_instance(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.Instance(
-            name="name_value",
-            config="config_value",
-            display_name="display_name_value",
-            node_count=1070,
-            processing_units=1743,
-            state=spanner_instance_admin.Instance.State.CREATING,
-            instance_type=spanner_instance_admin.Instance.InstanceType.PROVISIONED,
-            endpoint_uris=["endpoint_uris_value"],
-            edition=spanner_instance_admin.Instance.Edition.STANDARD,
-            default_backup_schedule_type=spanner_instance_admin.Instance.DefaultBackupScheduleType.NONE,
-        )
-        response = client.get_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.GetInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.Instance)
-    assert response.name == "name_value"
-    assert response.config == "config_value"
-    assert response.display_name == "display_name_value"
-    assert response.node_count == 1070
-    assert response.processing_units == 1743
-    assert response.state == spanner_instance_admin.Instance.State.CREATING
-    assert (
-        response.instance_type
-        == spanner_instance_admin.Instance.InstanceType.PROVISIONED
-    )
-    assert response.endpoint_uris == ["endpoint_uris_value"]
-    assert response.edition == spanner_instance_admin.Instance.Edition.STANDARD
-    assert (
-        response.default_backup_schedule_type
-        == spanner_instance_admin.Instance.DefaultBackupScheduleType.NONE
-    )
-
-
-def test_get_instance_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.GetInstanceRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_instance(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.GetInstanceRequest(
-            name="name_value",
-        )
-
-
-def test_get_instance_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_instance] = mock_rpc
-        request = {}
-        client.get_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_instance_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_instance
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_instance
-        ] = mock_rpc
-
-        request = {}
-        await client.get_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_instance_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.GetInstanceRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.Instance(
-                name="name_value",
-                config="config_value",
-                display_name="display_name_value",
-                node_count=1070,
-                processing_units=1743,
-                state=spanner_instance_admin.Instance.State.CREATING,
-                instance_type=spanner_instance_admin.Instance.InstanceType.PROVISIONED,
-                endpoint_uris=["endpoint_uris_value"],
-                edition=spanner_instance_admin.Instance.Edition.STANDARD,
-                default_backup_schedule_type=spanner_instance_admin.Instance.DefaultBackupScheduleType.NONE,
-            )
-        )
-        response = await client.get_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.GetInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.Instance)
-    assert response.name == "name_value"
-    assert response.config == "config_value"
-    assert response.display_name == "display_name_value"
-    assert response.node_count == 1070
-    assert response.processing_units == 1743
-    assert response.state == spanner_instance_admin.Instance.State.CREATING
-    assert (
-        response.instance_type
-        == spanner_instance_admin.Instance.InstanceType.PROVISIONED
-    )
-    assert response.endpoint_uris == ["endpoint_uris_value"]
-    assert response.edition == spanner_instance_admin.Instance.Edition.STANDARD
-    assert (
-        response.default_backup_schedule_type
-        == spanner_instance_admin.Instance.DefaultBackupScheduleType.NONE
-    )
-
-
-@pytest.mark.asyncio
-async def test_get_instance_async_from_dict():
-    await test_get_instance_async(request_type=dict)
-
-
-def test_get_instance_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.GetInstanceRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        call.return_value = spanner_instance_admin.Instance()
-        client.get_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_instance_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.GetInstanceRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.Instance()
-        )
-        await client.get_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_get_instance_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.Instance()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_instance(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_get_instance_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_instance(
-            spanner_instance_admin.GetInstanceRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_instance_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.Instance()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.Instance()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_instance(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_instance_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_instance(
-            spanner_instance_admin.GetInstanceRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.CreateInstanceRequest,
-        dict,
-    ],
-)
-def test_create_instance(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.create_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.CreateInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_create_instance_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.CreateInstanceRequest(
-        parent="parent_value",
-        instance_id="instance_id_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.create_instance(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.CreateInstanceRequest(
-            parent="parent_value",
-            instance_id="instance_id_value",
-        )
-
-
-def test_create_instance_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_instance] = mock_rpc
-        request = {}
-        client.create_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_instance_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.create_instance
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.create_instance
-        ] = mock_rpc
-
-        request = {}
-        await client.create_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.create_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_instance_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.CreateInstanceRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.create_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.CreateInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_create_instance_async_from_dict():
-    await test_create_instance_async(request_type=dict)
-
-
-def test_create_instance_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.CreateInstanceRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_create_instance_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.CreateInstanceRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.create_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_create_instance_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.create_instance(
-            parent="parent_value",
-            instance_id="instance_id_value",
-            instance=spanner_instance_admin.Instance(name="name_value"),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].instance_id
-        mock_val = "instance_id_value"
-        assert arg == mock_val
-        arg = args[0].instance
-        mock_val = spanner_instance_admin.Instance(name="name_value")
-        assert arg == mock_val
-
-
-def test_create_instance_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_instance(
-            spanner_instance_admin.CreateInstanceRequest(),
-            parent="parent_value",
-            instance_id="instance_id_value",
-            instance=spanner_instance_admin.Instance(name="name_value"),
-        )
-
-
-@pytest.mark.asyncio
-async def test_create_instance_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.create_instance(
-            parent="parent_value",
-            instance_id="instance_id_value",
-            instance=spanner_instance_admin.Instance(name="name_value"),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].instance_id
-        mock_val = "instance_id_value"
-        assert arg == mock_val
-        arg = args[0].instance
-        mock_val = spanner_instance_admin.Instance(name="name_value")
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_create_instance_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.create_instance(
-            spanner_instance_admin.CreateInstanceRequest(),
-            parent="parent_value",
-            instance_id="instance_id_value",
-            instance=spanner_instance_admin.Instance(name="name_value"),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.UpdateInstanceRequest,
-        dict,
-    ],
-)
-def test_update_instance(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.update_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.UpdateInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_update_instance_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.UpdateInstanceRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.update_instance(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.UpdateInstanceRequest()
-
-
-def test_update_instance_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.update_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.update_instance] = mock_rpc
-        request = {}
-        client.update_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_instance_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.update_instance
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.update_instance
-        ] = mock_rpc
-
-        request = {}
-        await client.update_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.update_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_instance_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.UpdateInstanceRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.update_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.UpdateInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_update_instance_async_from_dict():
-    await test_update_instance_async(request_type=dict)
-
-
-def test_update_instance_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.UpdateInstanceRequest()
-
-    request.instance.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "instance.name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_update_instance_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.UpdateInstanceRequest()
-
-    request.instance.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.update_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "instance.name=name_value",
-    ) in kw["metadata"]
-
-
-def test_update_instance_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.update_instance(
-            instance=spanner_instance_admin.Instance(name="name_value"),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].instance
-        mock_val = spanner_instance_admin.Instance(name="name_value")
-        assert arg == mock_val
-        arg = args[0].field_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-def test_update_instance_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_instance(
-            spanner_instance_admin.UpdateInstanceRequest(),
-            instance=spanner_instance_admin.Instance(name="name_value"),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.asyncio
-async def test_update_instance_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.update_instance(
-            instance=spanner_instance_admin.Instance(name="name_value"),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].instance
-        mock_val = spanner_instance_admin.Instance(name="name_value")
-        assert arg == mock_val
-        arg = args[0].field_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_update_instance_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.update_instance(
-            spanner_instance_admin.UpdateInstanceRequest(),
-            instance=spanner_instance_admin.Instance(name="name_value"),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.DeleteInstanceRequest,
-        dict,
-    ],
-)
-def test_delete_instance(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.DeleteInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_instance_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.DeleteInstanceRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.delete_instance(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.DeleteInstanceRequest(
-            name="name_value",
-        )
-
-
-def test_delete_instance_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.delete_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.delete_instance] = mock_rpc
-        request = {}
-        client.delete_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.delete_instance
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.delete_instance
-        ] = mock_rpc
-
-        request = {}
-        await client.delete_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.delete_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.DeleteInstanceRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.DeleteInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_async_from_dict():
-    await test_delete_instance_async(request_type=dict)
-
-
-def test_delete_instance_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.DeleteInstanceRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        call.return_value = None
-        client.delete_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.DeleteInstanceRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_delete_instance_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.delete_instance(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_delete_instance_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_instance(
-            spanner_instance_admin.DeleteInstanceRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.delete_instance(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.delete_instance(
-            spanner_instance_admin.DeleteInstanceRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.SetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_set_iam_policy(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-        response = client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.SetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-def test_set_iam_policy_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = iam_policy_pb2.SetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.set_iam_policy(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == iam_policy_pb2.SetIamPolicyRequest(
-            resource="resource_value",
-        )
-
-
-def test_set_iam_policy_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.set_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.set_iam_policy] = mock_rpc
-        request = {}
-        client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.set_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.set_iam_policy
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.set_iam_policy
-        ] = mock_rpc
-
-        request = {}
-        await client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.set_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_async(
-    transport: str = "grpc_asyncio", request_type=iam_policy_pb2.SetIamPolicyRequest
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        response = await client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.SetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_async_from_dict():
-    await test_set_iam_policy_async(request_type=dict)
-
-
-def test_set_iam_policy_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.SetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.SetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        await client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-def test_set_iam_policy_from_dict_foreign():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        response = client.set_iam_policy(
-            request={
-                "resource": "resource_value",
-                "policy": policy_pb2.Policy(version=774),
-                "update_mask": field_mask_pb2.FieldMask(paths=["paths_value"]),
-            }
-        )
-        call.assert_called()
-
-
-def test_set_iam_policy_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.set_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-def test_set_iam_policy_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.set_iam_policy(
-            iam_policy_pb2.SetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.set_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_set_iam_policy_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.set_iam_policy(
-            iam_policy_pb2.SetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.GetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_get_iam_policy(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-        response = client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.GetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-def test_get_iam_policy_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = iam_policy_pb2.GetIamPolicyRequest(
-        resource="resource_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_iam_policy(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == iam_policy_pb2.GetIamPolicyRequest(
-            resource="resource_value",
-        )
-
-
-def test_get_iam_policy_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_iam_policy] = mock_rpc
-        request = {}
-        client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_iam_policy
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_iam_policy
-        ] = mock_rpc
-
-        request = {}
-        await client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_async(
-    transport: str = "grpc_asyncio", request_type=iam_policy_pb2.GetIamPolicyRequest
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        response = await client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.GetIamPolicyRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_async_from_dict():
-    await test_get_iam_policy_async(request_type=dict)
-
-
-def test_get_iam_policy_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.GetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.GetIamPolicyRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        await client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-def test_get_iam_policy_from_dict_foreign():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        response = client.get_iam_policy(
-            request={
-                "resource": "resource_value",
-                "options": options_pb2.GetPolicyOptions(requested_policy_version=2598),
-            }
-        )
-        call.assert_called()
-
-
-def test_get_iam_policy_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-def test_get_iam_policy_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_iam_policy(
-            iam_policy_pb2.GetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = policy_pb2.Policy()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(policy_pb2.Policy())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_iam_policy(
-            resource="resource_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_iam_policy_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_iam_policy(
-            iam_policy_pb2.GetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.TestIamPermissionsRequest,
-        dict,
-    ],
-)
-def test_test_iam_permissions(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse(
-            permissions=["permissions_value"],
-        )
-        response = client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.TestIamPermissionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, iam_policy_pb2.TestIamPermissionsResponse)
-    assert response.permissions == ["permissions_value"]
-
-
-def test_test_iam_permissions_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = iam_policy_pb2.TestIamPermissionsRequest(
-        resource="resource_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.test_iam_permissions(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == iam_policy_pb2.TestIamPermissionsRequest(
-            resource="resource_value",
-        )
-
-
-def test_test_iam_permissions_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.test_iam_permissions in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.test_iam_permissions
-        ] = mock_rpc
-        request = {}
-        client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.test_iam_permissions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.test_iam_permissions
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.test_iam_permissions
-        ] = mock_rpc
-
-        request = {}
-        await client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.test_iam_permissions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_async(
-    transport: str = "grpc_asyncio",
-    request_type=iam_policy_pb2.TestIamPermissionsRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse(
-                permissions=["permissions_value"],
-            )
-        )
-        response = await client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = iam_policy_pb2.TestIamPermissionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, iam_policy_pb2.TestIamPermissionsResponse)
-    assert response.permissions == ["permissions_value"]
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_async_from_dict():
-    await test_test_iam_permissions_async(request_type=dict)
-
-
-def test_test_iam_permissions_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.TestIamPermissionsRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = iam_policy_pb2.TestIamPermissionsRequest()
-
-    request.resource = "resource_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse()
-        )
-        await client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "resource=resource_value",
-    ) in kw["metadata"]
-
-
-def test_test_iam_permissions_from_dict_foreign():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        response = client.test_iam_permissions(
-            request={
-                "resource": "resource_value",
-                "permissions": ["permissions_value"],
-            }
-        )
-        call.assert_called()
-
-
-def test_test_iam_permissions_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.test_iam_permissions(
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-        arg = args[0].permissions
-        mock_val = ["permissions_value"]
-        assert arg == mock_val
-
-
-def test_test_iam_permissions_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.test_iam_permissions(
-            iam_policy_pb2.TestIamPermissionsRequest(),
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.test_iam_permissions(
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].resource
-        mock_val = "resource_value"
-        assert arg == mock_val
-        arg = args[0].permissions
-        mock_val = ["permissions_value"]
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_test_iam_permissions_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.test_iam_permissions(
-            iam_policy_pb2.TestIamPermissionsRequest(),
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.GetInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_get_instance_partition(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.InstancePartition(
-            name="name_value",
-            config="config_value",
-            display_name="display_name_value",
-            state=spanner_instance_admin.InstancePartition.State.CREATING,
-            referencing_databases=["referencing_databases_value"],
-            referencing_backups=["referencing_backups_value"],
-            etag="etag_value",
-            node_count=1070,
-        )
-        response = client.get_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.GetInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.InstancePartition)
-    assert response.name == "name_value"
-    assert response.config == "config_value"
-    assert response.display_name == "display_name_value"
-    assert response.state == spanner_instance_admin.InstancePartition.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.etag == "etag_value"
-
-
-def test_get_instance_partition_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.GetInstancePartitionRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_instance_partition(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.GetInstancePartitionRequest(
-            name="name_value",
-        )
-
-
-def test_get_instance_partition_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.get_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_instance_partition
-        ] = mock_rpc
-        request = {}
-        client.get_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_instance_partition_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_instance_partition
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        await client.get_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_instance_partition_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.GetInstancePartitionRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstancePartition(
-                name="name_value",
-                config="config_value",
-                display_name="display_name_value",
-                state=spanner_instance_admin.InstancePartition.State.CREATING,
-                referencing_databases=["referencing_databases_value"],
-                referencing_backups=["referencing_backups_value"],
-                etag="etag_value",
-            )
-        )
-        response = await client.get_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.GetInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.InstancePartition)
-    assert response.name == "name_value"
-    assert response.config == "config_value"
-    assert response.display_name == "display_name_value"
-    assert response.state == spanner_instance_admin.InstancePartition.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.etag == "etag_value"
-
-
-@pytest.mark.asyncio
-async def test_get_instance_partition_async_from_dict():
-    await test_get_instance_partition_async(request_type=dict)
-
-
-def test_get_instance_partition_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.GetInstancePartitionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.InstancePartition()
-        client.get_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_instance_partition_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.GetInstancePartitionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstancePartition()
-        )
-        await client.get_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_get_instance_partition_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.InstancePartition()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_instance_partition(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_get_instance_partition_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_instance_partition(
-            spanner_instance_admin.GetInstancePartitionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_instance_partition_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner_instance_admin.InstancePartition()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstancePartition()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_instance_partition(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_instance_partition_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_instance_partition(
-            spanner_instance_admin.GetInstancePartitionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.CreateInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_create_instance_partition(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.create_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.CreateInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_create_instance_partition_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.CreateInstancePartitionRequest(
-        parent="parent_value",
-        instance_partition_id="instance_partition_id_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.create_instance_partition(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.CreateInstancePartitionRequest(
-            parent="parent_value",
-            instance_partition_id="instance_partition_id_value",
-        )
-
-
-def test_create_instance_partition_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.create_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.create_instance_partition
-        ] = mock_rpc
-        request = {}
-        client.create_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_instance_partition_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.create_instance_partition
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.create_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        await client.create_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.create_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_instance_partition_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.CreateInstancePartitionRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.create_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.CreateInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_create_instance_partition_async_from_dict():
-    await test_create_instance_partition_async(request_type=dict)
-
-
-def test_create_instance_partition_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.CreateInstancePartitionRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_create_instance_partition_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.CreateInstancePartitionRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.create_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_create_instance_partition_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.create_instance_partition(
-            parent="parent_value",
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            instance_partition_id="instance_partition_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].instance_partition
-        mock_val = spanner_instance_admin.InstancePartition(name="name_value")
-        assert arg == mock_val
-        arg = args[0].instance_partition_id
-        mock_val = "instance_partition_id_value"
-        assert arg == mock_val
-
-
-def test_create_instance_partition_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_instance_partition(
-            spanner_instance_admin.CreateInstancePartitionRequest(),
-            parent="parent_value",
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            instance_partition_id="instance_partition_id_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_create_instance_partition_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.create_instance_partition(
-            parent="parent_value",
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            instance_partition_id="instance_partition_id_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-        arg = args[0].instance_partition
-        mock_val = spanner_instance_admin.InstancePartition(name="name_value")
-        assert arg == mock_val
-        arg = args[0].instance_partition_id
-        mock_val = "instance_partition_id_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_create_instance_partition_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.create_instance_partition(
-            spanner_instance_admin.CreateInstancePartitionRequest(),
-            parent="parent_value",
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            instance_partition_id="instance_partition_id_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.DeleteInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_delete_instance_partition(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.DeleteInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_instance_partition_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.DeleteInstancePartitionRequest(
-        name="name_value",
-        etag="etag_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.delete_instance_partition(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.DeleteInstancePartitionRequest(
-            name="name_value",
-            etag="etag_value",
-        )
-
-
-def test_delete_instance_partition_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.delete_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.delete_instance_partition
-        ] = mock_rpc
-        request = {}
-        client.delete_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_partition_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.delete_instance_partition
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.delete_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        await client.delete_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.delete_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_partition_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.DeleteInstancePartitionRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.DeleteInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_partition_async_from_dict():
-    await test_delete_instance_partition_async(request_type=dict)
-
-
-def test_delete_instance_partition_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.DeleteInstancePartitionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        call.return_value = None
-        client.delete_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_partition_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.DeleteInstancePartitionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_delete_instance_partition_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.delete_instance_partition(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_delete_instance_partition_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_instance_partition(
-            spanner_instance_admin.DeleteInstancePartitionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_partition_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.delete_instance_partition(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_delete_instance_partition_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.delete_instance_partition(
-            spanner_instance_admin.DeleteInstancePartitionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.UpdateInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_update_instance_partition(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.update_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.UpdateInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_update_instance_partition_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.UpdateInstancePartitionRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.update_instance_partition(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.UpdateInstancePartitionRequest()
-
-
-def test_update_instance_partition_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_instance_partition
-        ] = mock_rpc
-        request = {}
-        client.update_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_instance_partition_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.update_instance_partition
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.update_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        await client.update_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.update_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_update_instance_partition_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.UpdateInstancePartitionRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.update_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.UpdateInstancePartitionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_update_instance_partition_async_from_dict():
-    await test_update_instance_partition_async(request_type=dict)
-
-
-def test_update_instance_partition_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.UpdateInstancePartitionRequest()
-
-    request.instance_partition.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "instance_partition.name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_update_instance_partition_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.UpdateInstancePartitionRequest()
-
-    request.instance_partition.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.update_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "instance_partition.name=name_value",
-    ) in kw["metadata"]
-
-
-def test_update_instance_partition_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.update_instance_partition(
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].instance_partition
-        mock_val = spanner_instance_admin.InstancePartition(name="name_value")
-        assert arg == mock_val
-        arg = args[0].field_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-def test_update_instance_partition_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_instance_partition(
-            spanner_instance_admin.UpdateInstancePartitionRequest(),
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.asyncio
-async def test_update_instance_partition_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/op")
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.update_instance_partition(
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].instance_partition
-        mock_val = spanner_instance_admin.InstancePartition(name="name_value")
-        assert arg == mock_val
-        arg = args[0].field_mask
-        mock_val = field_mask_pb2.FieldMask(paths=["paths_value"])
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_update_instance_partition_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.update_instance_partition(
-            spanner_instance_admin.UpdateInstancePartitionRequest(),
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstancePartitionOperationsRequest,
-        dict,
-    ],
-)
-def test_list_instance_partition_operations(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                next_page_token="next_page_token_value",
-                unreachable_instance_partitions=[
-                    "unreachable_instance_partitions_value"
-                ],
-            )
-        )
-        response = client.list_instance_partition_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancePartitionOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable_instance_partitions == [
-        "unreachable_instance_partitions_value"
-    ]
-
-
-def test_list_instance_partition_operations_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.ListInstancePartitionOperationsRequest(
-        parent="parent_value",
-        filter="filter_value",
-        page_token="page_token_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_instance_partition_operations(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.ListInstancePartitionOperationsRequest(
-            parent="parent_value",
-            filter="filter_value",
-            page_token="page_token_value",
-        )
-
-
-def test_list_instance_partition_operations_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_partition_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_partition_operations
-        ] = mock_rpc
-        request = {}
-        client.list_instance_partition_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_partition_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_instance_partition_operations
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_instance_partition_operations
-        ] = mock_rpc
-
-        request = {}
-        await client.list_instance_partition_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_instance_partition_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.ListInstancePartitionOperationsRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                next_page_token="next_page_token_value",
-                unreachable_instance_partitions=[
-                    "unreachable_instance_partitions_value"
-                ],
-            )
-        )
-        response = await client.list_instance_partition_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancePartitionOperationsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable_instance_partitions == [
-        "unreachable_instance_partitions_value"
-    ]
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_async_from_dict():
-    await test_list_instance_partition_operations_async(request_type=dict)
-
-
-def test_list_instance_partition_operations_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        call.return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse()
-        )
-        client.list_instance_partition_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-
-    request.parent = "parent_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionOperationsResponse()
-        )
-        await client.list_instance_partition_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "parent=parent_value",
-    ) in kw["metadata"]
-
-
-def test_list_instance_partition_operations_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_instance_partition_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-def test_list_instance_partition_operations_flattened_error():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_partition_operations(
-            spanner_instance_admin.ListInstancePartitionOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_flattened_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse()
-        )
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionOperationsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_instance_partition_operations(
-            parent="parent_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].parent
-        mock_val = "parent_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_flattened_error_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_instance_partition_operations(
-            spanner_instance_admin.ListInstancePartitionOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_partition_operations_pager(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("parent", ""),)),
-        )
-        pager = client.list_instance_partition_operations(
-            request={}, retry=retry, timeout=timeout
-        )
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-
-def test_list_instance_partition_operations_pages(transport_name: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_instance_partition_operations(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_async_pager():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_instance_partition_operations(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_async_pages():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations),
-        "__call__",
-        new_callable=mock.AsyncMock,
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_instance_partition_operations(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.MoveInstanceRequest,
-        dict,
-    ],
-)
-def test_move_instance(request_type, transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation(name="operations/spam")
-        response = client.move_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.MoveInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-def test_move_instance_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner_instance_admin.MoveInstanceRequest(
-        name="name_value",
-        target_config="target_config_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.move_instance(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner_instance_admin.MoveInstanceRequest(
-            name="name_value",
-            target_config="target_config_value",
-        )
-
-
-def test_move_instance_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.move_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.move_instance] = mock_rpc
-        request = {}
-        client.move_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.move_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_move_instance_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = InstanceAdminAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.move_instance
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.move_instance
-        ] = mock_rpc
-
-        request = {}
-        await client.move_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods call wrapper_fn to build a cached
-        # client._transport.operations_client instance on first rpc call.
-        # Subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        await client.move_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_move_instance_async(
-    transport: str = "grpc_asyncio",
-    request_type=spanner_instance_admin.MoveInstanceRequest,
-):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        response = await client.move_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner_instance_admin.MoveInstanceRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, future.Future)
-
-
-@pytest.mark.asyncio
-async def test_move_instance_async_from_dict():
-    await test_move_instance_async(request_type=dict)
-
-
-def test_move_instance_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.MoveInstanceRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.move_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_move_instance_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner_instance_admin.MoveInstanceRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/op")
-        )
-        await client.move_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_list_instance_configs_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_configs
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_configs
-        ] = mock_rpc
-
-        request = {}
-        client.list_instance_configs(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_configs(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_instance_configs_rest_required_fields(
-    request_type=spanner_instance_admin.ListInstanceConfigsRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_configs._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_configs._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.ListInstanceConfigsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_instance_admin.ListInstanceConfigsResponse.pb(
-                return_value
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_instance_configs(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_instance_configs_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_instance_configs._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_instance_configs_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstanceConfigsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstanceConfigsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_instance_configs(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*}/instanceConfigs" % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_instance_configs_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_configs(
-            spanner_instance_admin.ListInstanceConfigsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_configs_rest_pager(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                instance_configs=[
-                    spanner_instance_admin.InstanceConfig(),
-                    spanner_instance_admin.InstanceConfig(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_instance_admin.ListInstanceConfigsResponse.to_json(x)
-            for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1"}
-
-        pager = client.list_instance_configs(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(
-            isinstance(i, spanner_instance_admin.InstanceConfig) for i in results
-        )
-
-        pages = list(client.list_instance_configs(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_get_instance_config_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.get_instance_config in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_instance_config
-        ] = mock_rpc
-
-        request = {}
-        client.get_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_instance_config_rest_required_fields(
-    request_type=spanner_instance_admin.GetInstanceConfigRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_instance_config._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_instance_config._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.InstanceConfig()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_instance_admin.InstanceConfig.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_instance_config(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_instance_config_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_instance_config._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_get_instance_config_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.InstanceConfig()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"name": "projects/sample1/instanceConfigs/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.InstanceConfig.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_instance_config(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instanceConfigs/*}" % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_instance_config_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_instance_config(
-            spanner_instance_admin.GetInstanceConfigRequest(),
-            name="name_value",
-        )
-
-
-def test_create_instance_config_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.create_instance_config
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.create_instance_config
-        ] = mock_rpc
-
-        request = {}
-        client.create_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_create_instance_config_rest_required_fields(
-    request_type=spanner_instance_admin.CreateInstanceConfigRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["instance_config_id"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_instance_config._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["instanceConfigId"] = "instance_config_id_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_instance_config._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "instanceConfigId" in jsonified_request
-    assert jsonified_request["instanceConfigId"] == "instance_config_id_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.create_instance_config(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_create_instance_config_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.create_instance_config._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "parent",
-                "instanceConfigId",
-                "instanceConfig",
-            )
-        )
-    )
-
-
-def test_create_instance_config_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            instance_config_id="instance_config_id_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.create_instance_config(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*}/instanceConfigs" % client.transport._host,
-            args[1],
-        )
-
-
-def test_create_instance_config_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_instance_config(
-            spanner_instance_admin.CreateInstanceConfigRequest(),
-            parent="parent_value",
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            instance_config_id="instance_config_id_value",
-        )
-
-
-def test_update_instance_config_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_instance_config
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_instance_config
-        ] = mock_rpc
-
-        request = {}
-        client.update_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_update_instance_config_rest_required_fields(
-    request_type=spanner_instance_admin.UpdateInstanceConfigRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_instance_config._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_instance_config._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "patch",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.update_instance_config(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_update_instance_config_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.update_instance_config._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "instanceConfig",
-                "updateMask",
-            )
-        )
-    )
-
-
-def test_update_instance_config_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "instance_config": {"name": "projects/sample1/instanceConfigs/sample2"}
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.update_instance_config(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{instance_config.name=projects/*/instanceConfigs/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_update_instance_config_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_instance_config(
-            spanner_instance_admin.UpdateInstanceConfigRequest(),
-            instance_config=spanner_instance_admin.InstanceConfig(name="name_value"),
-            update_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-def test_delete_instance_config_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.delete_instance_config
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.delete_instance_config
-        ] = mock_rpc
-
-        request = {}
-        client.delete_instance_config(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_instance_config(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_delete_instance_config_rest_required_fields(
-    request_type=spanner_instance_admin.DeleteInstanceConfigRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_instance_config._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_instance_config._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "etag",
-            "validate_only",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "delete",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.delete_instance_config(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_delete_instance_config_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.delete_instance_config._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "etag",
-                "validateOnly",
-            )
-        )
-        & set(("name",))
-    )
-
-
-def test_delete_instance_config_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"name": "projects/sample1/instanceConfigs/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.delete_instance_config(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instanceConfigs/*}" % client.transport._host,
-            args[1],
-        )
-
-
-def test_delete_instance_config_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_instance_config(
-            spanner_instance_admin.DeleteInstanceConfigRequest(),
-            name="name_value",
-        )
-
-
-def test_list_instance_config_operations_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_config_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_config_operations
-        ] = mock_rpc
-
-        request = {}
-        client.list_instance_config_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_config_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_instance_config_operations_rest_required_fields(
-    request_type=spanner_instance_admin.ListInstanceConfigOperationsRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_config_operations._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_config_operations._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "filter",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.ListInstanceConfigOperationsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = (
-                spanner_instance_admin.ListInstanceConfigOperationsResponse.pb(
-                    return_value
-                )
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_instance_config_operations(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_instance_config_operations_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_instance_config_operations._get_unset_required_fields(
-        {}
-    )
-    assert set(unset_fields) == (
-        set(
-            (
-                "filter",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_instance_config_operations_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstanceConfigOperationsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstanceConfigOperationsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_instance_config_operations(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*}/instanceConfigOperations"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_instance_config_operations_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_config_operations(
-            spanner_instance_admin.ListInstanceConfigOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_config_operations_rest_pager(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_instance_admin.ListInstanceConfigOperationsResponse.to_json(x)
-            for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1"}
-
-        pager = client.list_instance_config_operations(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-        pages = list(
-            client.list_instance_config_operations(request=sample_request).pages
-        )
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_list_instances_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_instances in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_instances] = mock_rpc
-
-        request = {}
-        client.list_instances(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instances(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_instances_rest_required_fields(
-    request_type=spanner_instance_admin.ListInstancesRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instances._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instances._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "filter",
-            "instance_deadline",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.ListInstancesResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_instance_admin.ListInstancesResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_instances(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_instances_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_instances._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "filter",
-                "instanceDeadline",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_instances_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstancesResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstancesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_instances(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*}/instances" % client.transport._host, args[1]
-        )
-
-
-def test_list_instances_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instances(
-            spanner_instance_admin.ListInstancesRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instances_rest_pager(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancesResponse(
-                instances=[
-                    spanner_instance_admin.Instance(),
-                    spanner_instance_admin.Instance(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_instance_admin.ListInstancesResponse.to_json(x) for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1"}
-
-        pager = client.list_instances(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner_instance_admin.Instance) for i in results)
-
-        pages = list(client.list_instances(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_list_instance_partitions_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_partitions
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_partitions
-        ] = mock_rpc
-
-        request = {}
-        client.list_instance_partitions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_partitions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_instance_partitions_rest_required_fields(
-    request_type=spanner_instance_admin.ListInstancePartitionsRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_partitions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_partitions._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "instance_partition_deadline",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.ListInstancePartitionsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_instance_admin.ListInstancePartitionsResponse.pb(
-                return_value
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_instance_partitions(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_instance_partitions_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_instance_partitions._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "instancePartitionDeadline",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_instance_partitions_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstancePartitionsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstancePartitionsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_instance_partitions(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/instancePartitions"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_instance_partitions_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_partitions(
-            spanner_instance_admin.ListInstancePartitionsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_partitions_rest_pager(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                instance_partitions=[
-                    spanner_instance_admin.InstancePartition(),
-                    spanner_instance_admin.InstancePartition(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_instance_admin.ListInstancePartitionsResponse.to_json(x)
-            for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        pager = client.list_instance_partitions(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(
-            isinstance(i, spanner_instance_admin.InstancePartition) for i in results
-        )
-
-        pages = list(client.list_instance_partitions(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_get_instance_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_instance] = mock_rpc
-
-        request = {}
-        client.get_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_instance_rest_required_fields(
-    request_type=spanner_instance_admin.GetInstanceRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_instance._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(("field_mask",))
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.Instance()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_instance_admin.Instance.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_instance(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_instance_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_instance._get_unset_required_fields({})
-    assert set(unset_fields) == (set(("fieldMask",)) & set(("name",)))
-
-
-def test_get_instance_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.Instance()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"name": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.Instance.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_instance(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*}" % client.transport._host, args[1]
-        )
-
-
-def test_get_instance_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_instance(
-            spanner_instance_admin.GetInstanceRequest(),
-            name="name_value",
-        )
-
-
-def test_create_instance_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_instance] = mock_rpc
-
-        request = {}
-        client.create_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_create_instance_rest_required_fields(
-    request_type=spanner_instance_admin.CreateInstanceRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["instance_id"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["instanceId"] = "instance_id_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "instanceId" in jsonified_request
-    assert jsonified_request["instanceId"] == "instance_id_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.create_instance(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_create_instance_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.create_instance._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "parent",
-                "instanceId",
-                "instance",
-            )
-        )
-    )
-
-
-def test_create_instance_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            instance_id="instance_id_value",
-            instance=spanner_instance_admin.Instance(name="name_value"),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.create_instance(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*}/instances" % client.transport._host, args[1]
-        )
-
-
-def test_create_instance_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_instance(
-            spanner_instance_admin.CreateInstanceRequest(),
-            parent="parent_value",
-            instance_id="instance_id_value",
-            instance=spanner_instance_admin.Instance(name="name_value"),
-        )
-
-
-def test_update_instance_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.update_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.update_instance] = mock_rpc
-
-        request = {}
-        client.update_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_update_instance_rest_required_fields(
-    request_type=spanner_instance_admin.UpdateInstanceRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "patch",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.update_instance(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_update_instance_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.update_instance._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "instance",
-                "fieldMask",
-            )
-        )
-    )
-
-
-def test_update_instance_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"instance": {"name": "projects/sample1/instances/sample2"}}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            instance=spanner_instance_admin.Instance(name="name_value"),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.update_instance(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{instance.name=projects/*/instances/*}" % client.transport._host,
-            args[1],
-        )
-
-
-def test_update_instance_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_instance(
-            spanner_instance_admin.UpdateInstanceRequest(),
-            instance=spanner_instance_admin.Instance(name="name_value"),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-def test_delete_instance_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.delete_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.delete_instance] = mock_rpc
-
-        request = {}
-        client.delete_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_delete_instance_rest_required_fields(
-    request_type=spanner_instance_admin.DeleteInstanceRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "delete",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.delete_instance(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_delete_instance_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.delete_instance._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_delete_instance_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"name": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.delete_instance(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*}" % client.transport._host, args[1]
-        )
-
-
-def test_delete_instance_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_instance(
-            spanner_instance_admin.DeleteInstanceRequest(),
-            name="name_value",
-        )
-
-
-def test_set_iam_policy_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.set_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.set_iam_policy] = mock_rpc
-
-        request = {}
-        client.set_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.set_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_set_iam_policy_rest_required_fields(
-    request_type=iam_policy_pb2.SetIamPolicyRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["resource"] = ""
-    request = request_type(**request_init)
-    pb_request = request
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).set_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["resource"] = "resource_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).set_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "resource" in jsonified_request
-    assert jsonified_request["resource"] == "resource_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = policy_pb2.Policy()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.set_iam_policy(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_set_iam_policy_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.set_iam_policy._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "resource",
-                "policy",
-            )
-        )
-    )
-
-
-def test_set_iam_policy_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"resource": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            resource="resource_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.set_iam_policy(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{resource=projects/*/instances/*}:setIamPolicy"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_set_iam_policy_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.set_iam_policy(
-            iam_policy_pb2.SetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-def test_get_iam_policy_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_iam_policy in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_iam_policy] = mock_rpc
-
-        request = {}
-        client.get_iam_policy(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_iam_policy(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_iam_policy_rest_required_fields(
-    request_type=iam_policy_pb2.GetIamPolicyRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["resource"] = ""
-    request = request_type(**request_init)
-    pb_request = request
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["resource"] = "resource_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_iam_policy._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "resource" in jsonified_request
-    assert jsonified_request["resource"] == "resource_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = policy_pb2.Policy()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_iam_policy(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_iam_policy_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_iam_policy._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("resource",)))
-
-
-def test_get_iam_policy_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"resource": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            resource="resource_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_iam_policy(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{resource=projects/*/instances/*}:getIamPolicy"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_iam_policy_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_iam_policy(
-            iam_policy_pb2.GetIamPolicyRequest(),
-            resource="resource_value",
-        )
-
-
-def test_test_iam_permissions_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.test_iam_permissions in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.test_iam_permissions
-        ] = mock_rpc
-
-        request = {}
-        client.test_iam_permissions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.test_iam_permissions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_test_iam_permissions_rest_required_fields(
-    request_type=iam_policy_pb2.TestIamPermissionsRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["resource"] = ""
-    request_init["permissions"] = ""
-    request = request_type(**request_init)
-    pb_request = request
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).test_iam_permissions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["resource"] = "resource_value"
-    jsonified_request["permissions"] = "permissions_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).test_iam_permissions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "resource" in jsonified_request
-    assert jsonified_request["resource"] == "resource_value"
-    assert "permissions" in jsonified_request
-    assert jsonified_request["permissions"] == "permissions_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = iam_policy_pb2.TestIamPermissionsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.test_iam_permissions(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_test_iam_permissions_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.test_iam_permissions._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "resource",
-                "permissions",
-            )
-        )
-    )
-
-
-def test_test_iam_permissions_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = iam_policy_pb2.TestIamPermissionsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"resource": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.test_iam_permissions(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{resource=projects/*/instances/*}:testIamPermissions"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_test_iam_permissions_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.test_iam_permissions(
-            iam_policy_pb2.TestIamPermissionsRequest(),
-            resource="resource_value",
-            permissions=["permissions_value"],
-        )
-
-
-def test_get_instance_partition_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.get_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.get_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        client.get_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_instance_partition_rest_required_fields(
-    request_type=spanner_instance_admin.GetInstancePartitionRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_instance_partition._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_instance_partition._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.InstancePartition()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner_instance_admin.InstancePartition.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_instance_partition(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_instance_partition_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_instance_partition._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_get_instance_partition_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.InstancePartition()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.InstancePartition.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_instance_partition(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/instancePartitions/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_instance_partition_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_instance_partition(
-            spanner_instance_admin.GetInstancePartitionRequest(),
-            name="name_value",
-        )
-
-
-def test_create_instance_partition_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.create_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.create_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        client.create_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.create_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_create_instance_partition_rest_required_fields(
-    request_type=spanner_instance_admin.CreateInstancePartitionRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request_init["instance_partition_id"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_instance_partition._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-    jsonified_request["instancePartitionId"] = "instance_partition_id_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_instance_partition._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-    assert "instancePartitionId" in jsonified_request
-    assert jsonified_request["instancePartitionId"] == "instance_partition_id_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.create_instance_partition(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_create_instance_partition_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.create_instance_partition._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "parent",
-                "instancePartitionId",
-                "instancePartition",
-            )
-        )
-    )
-
-
-def test_create_instance_partition_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            instance_partition_id="instance_partition_id_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.create_instance_partition(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/instancePartitions"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_create_instance_partition_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_instance_partition(
-            spanner_instance_admin.CreateInstancePartitionRequest(),
-            parent="parent_value",
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            instance_partition_id="instance_partition_id_value",
-        )
-
-
-def test_delete_instance_partition_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.delete_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.delete_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        client.delete_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_delete_instance_partition_rest_required_fields(
-    request_type=spanner_instance_admin.DeleteInstancePartitionRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_instance_partition._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_instance_partition._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(("etag",))
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "delete",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.delete_instance_partition(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_delete_instance_partition_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.delete_instance_partition._get_unset_required_fields({})
-    assert set(unset_fields) == (set(("etag",)) & set(("name",)))
-
-
-def test_delete_instance_partition_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.delete_instance_partition(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/instancePartitions/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_delete_instance_partition_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_instance_partition(
-            spanner_instance_admin.DeleteInstancePartitionRequest(),
-            name="name_value",
-        )
-
-
-def test_update_instance_partition_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.update_instance_partition
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.update_instance_partition
-        ] = mock_rpc
-
-        request = {}
-        client.update_instance_partition(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.update_instance_partition(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_update_instance_partition_rest_required_fields(
-    request_type=spanner_instance_admin.UpdateInstancePartitionRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_instance_partition._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).update_instance_partition._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "patch",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.update_instance_partition(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_update_instance_partition_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.update_instance_partition._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "instancePartition",
-                "fieldMask",
-            )
-        )
-    )
-
-
-def test_update_instance_partition_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "instance_partition": {
-                "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-            }
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.update_instance_partition(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{instance_partition.name=projects/*/instances/*/instancePartitions/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_update_instance_partition_rest_flattened_error(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.update_instance_partition(
-            spanner_instance_admin.UpdateInstancePartitionRequest(),
-            instance_partition=spanner_instance_admin.InstancePartition(
-                name="name_value"
-            ),
-            field_mask=field_mask_pb2.FieldMask(paths=["paths_value"]),
-        )
-
-
-def test_list_instance_partition_operations_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.list_instance_partition_operations
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.list_instance_partition_operations
-        ] = mock_rpc
-
-        request = {}
-        client.list_instance_partition_operations(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_instance_partition_operations(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_instance_partition_operations_rest_required_fields(
-    request_type=spanner_instance_admin.ListInstancePartitionOperationsRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["parent"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_partition_operations._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["parent"] = "parent_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_instance_partition_operations._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "filter",
-            "instance_partition_deadline",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "parent" in jsonified_request
-    assert jsonified_request["parent"] == "parent_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner_instance_admin.ListInstancePartitionOperationsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = (
-                spanner_instance_admin.ListInstancePartitionOperationsResponse.pb(
-                    return_value
-                )
-            )
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_instance_partition_operations(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_instance_partition_operations_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = (
-        transport.list_instance_partition_operations._get_unset_required_fields({})
-    )
-    assert set(unset_fields) == (
-        set(
-            (
-                "filter",
-                "instancePartitionDeadline",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("parent",))
-    )
-
-
-def test_list_instance_partition_operations_rest_flattened():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstancePartitionOperationsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            parent="parent_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse.pb(
-                return_value
-            )
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_instance_partition_operations(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{parent=projects/*/instances/*}/instancePartitionOperations"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_instance_partition_operations_rest_flattened_error(
-    transport: str = "rest",
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_instance_partition_operations(
-            spanner_instance_admin.ListInstancePartitionOperationsRequest(),
-            parent="parent_value",
-        )
-
-
-def test_list_instance_partition_operations_rest_pager(transport: str = "rest"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[],
-                next_page_token="def",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                operations=[
-                    operations_pb2.Operation(),
-                    operations_pb2.Operation(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(
-            spanner_instance_admin.ListInstancePartitionOperationsResponse.to_json(x)
-            for x in response
-        )
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {"parent": "projects/sample1/instances/sample2"}
-
-        pager = client.list_instance_partition_operations(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, operations_pb2.Operation) for i in results)
-
-        pages = list(
-            client.list_instance_partition_operations(request=sample_request).pages
-        )
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_move_instance_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.move_instance in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.move_instance] = mock_rpc
-
-        request = {}
-        client.move_instance(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        # Operation methods build a cached wrapper on first rpc call
-        # subsequent calls should use the cached wrapper
-        wrapper_fn.reset_mock()
-
-        client.move_instance(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_move_instance_rest_required_fields(
-    request_type=spanner_instance_admin.MoveInstanceRequest,
-):
-    transport_class = transports.InstanceAdminRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request_init["target_config"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).move_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-    jsonified_request["targetConfig"] = "target_config_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).move_instance._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-    assert "targetConfig" in jsonified_request
-    assert jsonified_request["targetConfig"] == "target_config_value"
-
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = operations_pb2.Operation(name="operations/spam")
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.move_instance(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_move_instance_rest_unset_required_fields():
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.move_instance._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "name",
-                "targetConfig",
-            )
-        )
-    )
-
-
-def test_credentials_transport_error():
-    # It is an error to provide credentials and a transport instance.
-    transport = transports.InstanceAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport=transport,
-        )
-
-    # It is an error to provide a credentials file and a transport instance.
-    transport = transports.InstanceAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = InstanceAdminClient(
-            client_options={"credentials_file": "credentials.json"},
-            transport=transport,
-        )
-
-    # It is an error to provide an api_key and a transport instance.
-    transport = transports.InstanceAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    options = client_options.ClientOptions()
-    options.api_key = "api_key"
-    with pytest.raises(ValueError):
-        client = InstanceAdminClient(
-            client_options=options,
-            transport=transport,
-        )
-
-    # It is an error to provide an api_key and a credential.
-    options = client_options.ClientOptions()
-    options.api_key = "api_key"
-    with pytest.raises(ValueError):
-        client = InstanceAdminClient(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-
-    # It is an error to provide scopes and a transport instance.
-    transport = transports.InstanceAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = InstanceAdminClient(
-            client_options={"scopes": ["1", "2"]},
-            transport=transport,
-        )
-
-
-def test_transport_instance():
-    # A client may be instantiated with a custom transport instance.
-    transport = transports.InstanceAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    client = InstanceAdminClient(transport=transport)
-    assert client.transport is transport
-
-
-def test_transport_get_channel():
-    # A client may be instantiated with a custom transport instance.
-    transport = transports.InstanceAdminGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    channel = transport.grpc_channel
-    assert channel
-
-    transport = transports.InstanceAdminGrpcAsyncIOTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    channel = transport.grpc_channel
-    assert channel
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.InstanceAdminGrpcTransport,
-        transports.InstanceAdminGrpcAsyncIOTransport,
-        transports.InstanceAdminRestTransport,
-    ],
-)
-def test_transport_adc(transport_class):
-    # Test default credentials are used if not provided.
-    with mock.patch.object(google.auth, "default") as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport_class()
-        adc.assert_called_once()
-
-
-def test_transport_kind_grpc():
-    transport = InstanceAdminClient.get_transport_class("grpc")(
-        credentials=ga_credentials.AnonymousCredentials()
-    )
-    assert transport.kind == "grpc"
-
-
-def test_initialize_client_w_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="grpc"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_configs_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.ListInstanceConfigsResponse()
-        client.list_instance_configs(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstanceConfigsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_instance_config_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.InstanceConfig()
-        client.get_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_instance_config_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_instance_config_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_instance_config_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        call.return_value = None
-        client.delete_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_config_operations_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        call.return_value = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse()
-        )
-        client.list_instance_config_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instances_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        call.return_value = spanner_instance_admin.ListInstancesResponse()
-        client.list_instances(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_partitions_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.ListInstancePartitionsResponse()
-        client.list_instance_partitions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancePartitionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_instance_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        call.return_value = spanner_instance_admin.Instance()
-        client.get_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_instance_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_instance_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_instance_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        call.return_value = None
-        client.delete_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_set_iam_policy_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.set_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.SetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_iam_policy_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        call.return_value = policy_pb2.Policy()
-        client.get_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.GetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_test_iam_permissions_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        call.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        client.test_iam_permissions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.TestIamPermissionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_instance_partition_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        call.return_value = spanner_instance_admin.InstancePartition()
-        client.get_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_instance_partition_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.create_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_instance_partition_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        call.return_value = None
-        client.delete_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_instance_partition_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.update_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_partition_operations_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        call.return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse()
-        )
-        client.list_instance_partition_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_move_instance_empty_call_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        call.return_value = operations_pb2.Operation(name="operations/op")
-        client.move_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.MoveInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-def test_transport_kind_grpc_asyncio():
-    transport = InstanceAdminAsyncClient.get_transport_class("grpc_asyncio")(
-        credentials=async_anonymous_credentials()
-    )
-    assert transport.kind == "grpc_asyncio"
-
-
-def test_initialize_client_w_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(), transport="grpc_asyncio"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_instance_configs_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_instance_configs(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstanceConfigsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_instance_config_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstanceConfig(
-                name="name_value",
-                display_name="display_name_value",
-                config_type=spanner_instance_admin.InstanceConfig.Type.GOOGLE_MANAGED,
-                base_config="base_config_value",
-                etag="etag_value",
-                leader_options=["leader_options_value"],
-                reconciling=True,
-                state=spanner_instance_admin.InstanceConfig.State.CREATING,
-                free_instance_availability=spanner_instance_admin.InstanceConfig.FreeInstanceAvailability.AVAILABLE,
-                quorum_type=spanner_instance_admin.InstanceConfig.QuorumType.REGION,
-                storage_limit_per_processing_unit=3540,
-            )
-        )
-        await client.get_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_create_instance_config_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.create_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_update_instance_config_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.update_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_delete_instance_config_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_instance_config_operations_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_instance_config_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_instances_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancesResponse(
-                next_page_token="next_page_token_value",
-                unreachable=["unreachable_value"],
-            )
-        )
-        await client.list_instances(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_instance_partitions_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionsResponse(
-                next_page_token="next_page_token_value",
-                unreachable=["unreachable_value"],
-            )
-        )
-        await client.list_instance_partitions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancePartitionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_instance_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.Instance(
-                name="name_value",
-                config="config_value",
-                display_name="display_name_value",
-                node_count=1070,
-                processing_units=1743,
-                state=spanner_instance_admin.Instance.State.CREATING,
-                instance_type=spanner_instance_admin.Instance.InstanceType.PROVISIONED,
-                endpoint_uris=["endpoint_uris_value"],
-                edition=spanner_instance_admin.Instance.Edition.STANDARD,
-                default_backup_schedule_type=spanner_instance_admin.Instance.DefaultBackupScheduleType.NONE,
-            )
-        )
-        await client.get_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_create_instance_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.create_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_update_instance_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.update_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_delete_instance_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_set_iam_policy_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        await client.set_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.SetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_iam_policy_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            policy_pb2.Policy(
-                version=774,
-                etag=b"etag_blob",
-            )
-        )
-        await client.get_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.GetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_test_iam_permissions_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            iam_policy_pb2.TestIamPermissionsResponse(
-                permissions=["permissions_value"],
-            )
-        )
-        await client.test_iam_permissions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.TestIamPermissionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_instance_partition_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.InstancePartition(
-                name="name_value",
-                config="config_value",
-                display_name="display_name_value",
-                state=spanner_instance_admin.InstancePartition.State.CREATING,
-                referencing_databases=["referencing_databases_value"],
-                referencing_backups=["referencing_backups_value"],
-                etag="etag_value",
-            )
-        )
-        await client.get_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_create_instance_partition_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.create_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_delete_instance_partition_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_update_instance_partition_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.update_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_instance_partition_operations_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(
-                next_page_token="next_page_token_value",
-                unreachable_instance_partitions=[
-                    "unreachable_instance_partitions_value"
-                ],
-            )
-        )
-        await client.list_instance_partition_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_move_instance_empty_call_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation(name="operations/spam")
-        )
-        await client.move_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.MoveInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-def test_transport_kind_rest():
-    transport = InstanceAdminClient.get_transport_class("rest")(
-        credentials=ga_credentials.AnonymousCredentials()
-    )
-    assert transport.kind == "rest"
-
-
-def test_list_instance_configs_rest_bad_request(
-    request_type=spanner_instance_admin.ListInstanceConfigsRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_instance_configs(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstanceConfigsRequest,
-        dict,
-    ],
-)
-def test_list_instance_configs_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstanceConfigsResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstanceConfigsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_instance_configs(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstanceConfigsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_instance_configs_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_list_instance_configs"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_list_instance_configs_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_list_instance_configs"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.ListInstanceConfigsRequest.pb(
-            spanner_instance_admin.ListInstanceConfigsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_instance_admin.ListInstanceConfigsResponse.to_json(
-            spanner_instance_admin.ListInstanceConfigsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.ListInstanceConfigsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_instance_admin.ListInstanceConfigsResponse()
-        post_with_metadata.return_value = (
-            spanner_instance_admin.ListInstanceConfigsResponse(),
-            metadata,
-        )
-
-        client.list_instance_configs(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_instance_config_rest_bad_request(
-    request_type=spanner_instance_admin.GetInstanceConfigRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instanceConfigs/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_instance_config(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.GetInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_get_instance_config_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instanceConfigs/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.InstanceConfig(
-            name="name_value",
-            display_name="display_name_value",
-            config_type=spanner_instance_admin.InstanceConfig.Type.GOOGLE_MANAGED,
-            base_config="base_config_value",
-            etag="etag_value",
-            leader_options=["leader_options_value"],
-            reconciling=True,
-            state=spanner_instance_admin.InstanceConfig.State.CREATING,
-            free_instance_availability=spanner_instance_admin.InstanceConfig.FreeInstanceAvailability.AVAILABLE,
-            quorum_type=spanner_instance_admin.InstanceConfig.QuorumType.REGION,
-            storage_limit_per_processing_unit=3540,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.InstanceConfig.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_instance_config(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.InstanceConfig)
-    assert response.name == "name_value"
-    assert response.display_name == "display_name_value"
-    assert (
-        response.config_type
-        == spanner_instance_admin.InstanceConfig.Type.GOOGLE_MANAGED
-    )
-    assert response.base_config == "base_config_value"
-    assert response.etag == "etag_value"
-    assert response.leader_options == ["leader_options_value"]
-    assert response.reconciling is True
-    assert response.state == spanner_instance_admin.InstanceConfig.State.CREATING
-    assert (
-        response.free_instance_availability
-        == spanner_instance_admin.InstanceConfig.FreeInstanceAvailability.AVAILABLE
-    )
-    assert (
-        response.quorum_type == spanner_instance_admin.InstanceConfig.QuorumType.REGION
-    )
-    assert response.storage_limit_per_processing_unit == 3540
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_instance_config_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_get_instance_config"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_get_instance_config_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_get_instance_config"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.GetInstanceConfigRequest.pb(
-            spanner_instance_admin.GetInstanceConfigRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_instance_admin.InstanceConfig.to_json(
-            spanner_instance_admin.InstanceConfig()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.GetInstanceConfigRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_instance_admin.InstanceConfig()
-        post_with_metadata.return_value = (
-            spanner_instance_admin.InstanceConfig(),
-            metadata,
-        )
-
-        client.get_instance_config(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_create_instance_config_rest_bad_request(
-    request_type=spanner_instance_admin.CreateInstanceConfigRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.create_instance_config(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.CreateInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_create_instance_config_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.create_instance_config(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_create_instance_config_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_create_instance_config"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_create_instance_config_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_create_instance_config"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.CreateInstanceConfigRequest.pb(
-            spanner_instance_admin.CreateInstanceConfigRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.CreateInstanceConfigRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.create_instance_config(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_update_instance_config_rest_bad_request(
-    request_type=spanner_instance_admin.UpdateInstanceConfigRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "instance_config": {"name": "projects/sample1/instanceConfigs/sample2"}
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.update_instance_config(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.UpdateInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_update_instance_config_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "instance_config": {"name": "projects/sample1/instanceConfigs/sample2"}
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.update_instance_config(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_update_instance_config_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_update_instance_config"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_update_instance_config_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_update_instance_config"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.UpdateInstanceConfigRequest.pb(
-            spanner_instance_admin.UpdateInstanceConfigRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.UpdateInstanceConfigRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.update_instance_config(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_delete_instance_config_rest_bad_request(
-    request_type=spanner_instance_admin.DeleteInstanceConfigRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instanceConfigs/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_instance_config(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.DeleteInstanceConfigRequest,
-        dict,
-    ],
-)
-def test_delete_instance_config_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instanceConfigs/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.delete_instance_config(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_delete_instance_config_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_delete_instance_config"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = spanner_instance_admin.DeleteInstanceConfigRequest.pb(
-            spanner_instance_admin.DeleteInstanceConfigRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = spanner_instance_admin.DeleteInstanceConfigRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.delete_instance_config(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_list_instance_config_operations_rest_bad_request(
-    request_type=spanner_instance_admin.ListInstanceConfigOperationsRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_instance_config_operations(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstanceConfigOperationsRequest,
-        dict,
-    ],
-)
-def test_list_instance_config_operations_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstanceConfigOperationsResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstanceConfigOperationsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_instance_config_operations(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstanceConfigOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_instance_config_operations_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_list_instance_config_operations"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_list_instance_config_operations_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_list_instance_config_operations"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.ListInstanceConfigOperationsRequest.pb(
-            spanner_instance_admin.ListInstanceConfigOperationsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse.to_json(
-                spanner_instance_admin.ListInstanceConfigOperationsResponse()
-            )
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse()
-        )
-        post_with_metadata.return_value = (
-            spanner_instance_admin.ListInstanceConfigOperationsResponse(),
-            metadata,
-        )
-
-        client.list_instance_config_operations(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_list_instances_rest_bad_request(
-    request_type=spanner_instance_admin.ListInstancesRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_instances(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstancesRequest,
-        dict,
-    ],
-)
-def test_list_instances_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstancesResponse(
-            next_page_token="next_page_token_value",
-            unreachable=["unreachable_value"],
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstancesResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_instances(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancesPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable == ["unreachable_value"]
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_instances_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_list_instances"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_list_instances_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_list_instances"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.ListInstancesRequest.pb(
-            spanner_instance_admin.ListInstancesRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_instance_admin.ListInstancesResponse.to_json(
-            spanner_instance_admin.ListInstancesResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.ListInstancesRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_instance_admin.ListInstancesResponse()
-        post_with_metadata.return_value = (
-            spanner_instance_admin.ListInstancesResponse(),
-            metadata,
-        )
-
-        client.list_instances(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_list_instance_partitions_rest_bad_request(
-    request_type=spanner_instance_admin.ListInstancePartitionsRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_instance_partitions(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstancePartitionsRequest,
-        dict,
-    ],
-)
-def test_list_instance_partitions_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstancePartitionsResponse(
-            next_page_token="next_page_token_value",
-            unreachable=["unreachable_value"],
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.ListInstancePartitionsResponse.pb(
-            return_value
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_instance_partitions(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancePartitionsPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable == ["unreachable_value"]
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_instance_partitions_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_list_instance_partitions"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_list_instance_partitions_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_list_instance_partitions"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.ListInstancePartitionsRequest.pb(
-            spanner_instance_admin.ListInstancePartitionsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_instance_admin.ListInstancePartitionsResponse.to_json(
-            spanner_instance_admin.ListInstancePartitionsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.ListInstancePartitionsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_instance_admin.ListInstancePartitionsResponse()
-        post_with_metadata.return_value = (
-            spanner_instance_admin.ListInstancePartitionsResponse(),
-            metadata,
-        )
-
-        client.list_instance_partitions(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_instance_rest_bad_request(
-    request_type=spanner_instance_admin.GetInstanceRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_instance(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.GetInstanceRequest,
-        dict,
-    ],
-)
-def test_get_instance_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.Instance(
-            name="name_value",
-            config="config_value",
-            display_name="display_name_value",
-            node_count=1070,
-            processing_units=1743,
-            state=spanner_instance_admin.Instance.State.CREATING,
-            instance_type=spanner_instance_admin.Instance.InstanceType.PROVISIONED,
-            endpoint_uris=["endpoint_uris_value"],
-            edition=spanner_instance_admin.Instance.Edition.STANDARD,
-            default_backup_schedule_type=spanner_instance_admin.Instance.DefaultBackupScheduleType.NONE,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.Instance.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_instance(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.Instance)
-    assert response.name == "name_value"
-    assert response.config == "config_value"
-    assert response.display_name == "display_name_value"
-    assert response.node_count == 1070
-    assert response.processing_units == 1743
-    assert response.state == spanner_instance_admin.Instance.State.CREATING
-    assert (
-        response.instance_type
-        == spanner_instance_admin.Instance.InstanceType.PROVISIONED
-    )
-    assert response.endpoint_uris == ["endpoint_uris_value"]
-    assert response.edition == spanner_instance_admin.Instance.Edition.STANDARD
-    assert (
-        response.default_backup_schedule_type
-        == spanner_instance_admin.Instance.DefaultBackupScheduleType.NONE
-    )
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_instance_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_get_instance"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_get_instance_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_get_instance"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.GetInstanceRequest.pb(
-            spanner_instance_admin.GetInstanceRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_instance_admin.Instance.to_json(
-            spanner_instance_admin.Instance()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.GetInstanceRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_instance_admin.Instance()
-        post_with_metadata.return_value = spanner_instance_admin.Instance(), metadata
-
-        client.get_instance(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_create_instance_rest_bad_request(
-    request_type=spanner_instance_admin.CreateInstanceRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.create_instance(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.CreateInstanceRequest,
-        dict,
-    ],
-)
-def test_create_instance_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.create_instance(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_create_instance_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_create_instance"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_create_instance_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_create_instance"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.CreateInstanceRequest.pb(
-            spanner_instance_admin.CreateInstanceRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.CreateInstanceRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.create_instance(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_update_instance_rest_bad_request(
-    request_type=spanner_instance_admin.UpdateInstanceRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"instance": {"name": "projects/sample1/instances/sample2"}}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.update_instance(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.UpdateInstanceRequest,
-        dict,
-    ],
-)
-def test_update_instance_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"instance": {"name": "projects/sample1/instances/sample2"}}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.update_instance(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_update_instance_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_update_instance"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_update_instance_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_update_instance"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.UpdateInstanceRequest.pb(
-            spanner_instance_admin.UpdateInstanceRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.UpdateInstanceRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.update_instance(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_delete_instance_rest_bad_request(
-    request_type=spanner_instance_admin.DeleteInstanceRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_instance(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.DeleteInstanceRequest,
-        dict,
-    ],
-)
-def test_delete_instance_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.delete_instance(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_delete_instance_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_delete_instance"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = spanner_instance_admin.DeleteInstanceRequest.pb(
-            spanner_instance_admin.DeleteInstanceRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = spanner_instance_admin.DeleteInstanceRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.delete_instance(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_set_iam_policy_rest_bad_request(
-    request_type=iam_policy_pb2.SetIamPolicyRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.set_iam_policy(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.SetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_set_iam_policy_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.set_iam_policy(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_set_iam_policy_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_set_iam_policy"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_set_iam_policy_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_set_iam_policy"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = iam_policy_pb2.SetIamPolicyRequest()
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(policy_pb2.Policy())
-        req.return_value.content = return_value
-
-        request = iam_policy_pb2.SetIamPolicyRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = policy_pb2.Policy()
-        post_with_metadata.return_value = policy_pb2.Policy(), metadata
-
-        client.set_iam_policy(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_iam_policy_rest_bad_request(
-    request_type=iam_policy_pb2.GetIamPolicyRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_iam_policy(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.GetIamPolicyRequest,
-        dict,
-    ],
-)
-def test_get_iam_policy_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = policy_pb2.Policy(
-            version=774,
-            etag=b"etag_blob",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_iam_policy(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, policy_pb2.Policy)
-    assert response.version == 774
-    assert response.etag == b"etag_blob"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_iam_policy_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_get_iam_policy"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_get_iam_policy_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_get_iam_policy"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = iam_policy_pb2.GetIamPolicyRequest()
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(policy_pb2.Policy())
-        req.return_value.content = return_value
-
-        request = iam_policy_pb2.GetIamPolicyRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = policy_pb2.Policy()
-        post_with_metadata.return_value = policy_pb2.Policy(), metadata
-
-        client.get_iam_policy(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_test_iam_permissions_rest_bad_request(
-    request_type=iam_policy_pb2.TestIamPermissionsRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.test_iam_permissions(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        iam_policy_pb2.TestIamPermissionsRequest,
-        dict,
-    ],
-)
-def test_test_iam_permissions_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"resource": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = iam_policy_pb2.TestIamPermissionsResponse(
-            permissions=["permissions_value"],
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.test_iam_permissions(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, iam_policy_pb2.TestIamPermissionsResponse)
-    assert response.permissions == ["permissions_value"]
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_test_iam_permissions_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_test_iam_permissions"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_test_iam_permissions_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_test_iam_permissions"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = iam_policy_pb2.TestIamPermissionsRequest()
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(
-            iam_policy_pb2.TestIamPermissionsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = iam_policy_pb2.TestIamPermissionsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = iam_policy_pb2.TestIamPermissionsResponse()
-        post_with_metadata.return_value = (
-            iam_policy_pb2.TestIamPermissionsResponse(),
-            metadata,
-        )
-
-        client.test_iam_permissions(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_instance_partition_rest_bad_request(
-    request_type=spanner_instance_admin.GetInstancePartitionRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_instance_partition(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.GetInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_get_instance_partition_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.InstancePartition(
-            name="name_value",
-            config="config_value",
-            display_name="display_name_value",
-            state=spanner_instance_admin.InstancePartition.State.CREATING,
-            referencing_databases=["referencing_databases_value"],
-            referencing_backups=["referencing_backups_value"],
-            etag="etag_value",
-            node_count=1070,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner_instance_admin.InstancePartition.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_instance_partition(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner_instance_admin.InstancePartition)
-    assert response.name == "name_value"
-    assert response.config == "config_value"
-    assert response.display_name == "display_name_value"
-    assert response.state == spanner_instance_admin.InstancePartition.State.CREATING
-    assert response.referencing_databases == ["referencing_databases_value"]
-    assert response.referencing_backups == ["referencing_backups_value"]
-    assert response.etag == "etag_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_instance_partition_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_get_instance_partition"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_get_instance_partition_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_get_instance_partition"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.GetInstancePartitionRequest.pb(
-            spanner_instance_admin.GetInstancePartitionRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner_instance_admin.InstancePartition.to_json(
-            spanner_instance_admin.InstancePartition()
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.GetInstancePartitionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner_instance_admin.InstancePartition()
-        post_with_metadata.return_value = (
-            spanner_instance_admin.InstancePartition(),
-            metadata,
-        )
-
-        client.get_instance_partition(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_create_instance_partition_rest_bad_request(
-    request_type=spanner_instance_admin.CreateInstancePartitionRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.create_instance_partition(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.CreateInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_create_instance_partition_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.create_instance_partition(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_create_instance_partition_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_create_instance_partition"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_create_instance_partition_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_create_instance_partition"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.CreateInstancePartitionRequest.pb(
-            spanner_instance_admin.CreateInstancePartitionRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.CreateInstancePartitionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.create_instance_partition(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_delete_instance_partition_rest_bad_request(
-    request_type=spanner_instance_admin.DeleteInstancePartitionRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_instance_partition(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.DeleteInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_delete_instance_partition_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.delete_instance_partition(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_delete_instance_partition_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_delete_instance_partition"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = spanner_instance_admin.DeleteInstancePartitionRequest.pb(
-            spanner_instance_admin.DeleteInstancePartitionRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = spanner_instance_admin.DeleteInstancePartitionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.delete_instance_partition(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_update_instance_partition_rest_bad_request(
-    request_type=spanner_instance_admin.UpdateInstancePartitionRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "instance_partition": {
-            "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-        }
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.update_instance_partition(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.UpdateInstancePartitionRequest,
-        dict,
-    ],
-)
-def test_update_instance_partition_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "instance_partition": {
-            "name": "projects/sample1/instances/sample2/instancePartitions/sample3"
-        }
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.update_instance_partition(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_update_instance_partition_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_update_instance_partition"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_update_instance_partition_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_update_instance_partition"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.UpdateInstancePartitionRequest.pb(
-            spanner_instance_admin.UpdateInstancePartitionRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.UpdateInstancePartitionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.update_instance_partition(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_list_instance_partition_operations_rest_bad_request(
-    request_type=spanner_instance_admin.ListInstancePartitionOperationsRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_instance_partition_operations(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.ListInstancePartitionOperationsRequest,
-        dict,
-    ],
-)
-def test_list_instance_partition_operations_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"parent": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner_instance_admin.ListInstancePartitionOperationsResponse(
-            next_page_token="next_page_token_value",
-            unreachable_instance_partitions=["unreachable_instance_partitions_value"],
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse.pb(
-                return_value
-            )
-        )
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_instance_partition_operations(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListInstancePartitionOperationsPager)
-    assert response.next_page_token == "next_page_token_value"
-    assert response.unreachable_instance_partitions == [
-        "unreachable_instance_partitions_value"
-    ]
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_instance_partition_operations_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_list_instance_partition_operations",
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "post_list_instance_partition_operations_with_metadata",
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor,
-        "pre_list_instance_partition_operations",
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.ListInstancePartitionOperationsRequest.pb(
-            spanner_instance_admin.ListInstancePartitionOperationsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse.to_json(
-                spanner_instance_admin.ListInstancePartitionOperationsResponse()
-            )
-        )
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse()
-        )
-        post_with_metadata.return_value = (
-            spanner_instance_admin.ListInstancePartitionOperationsResponse(),
-            metadata,
-        )
-
-        client.list_instance_partition_operations(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_move_instance_rest_bad_request(
-    request_type=spanner_instance_admin.MoveInstanceRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.move_instance(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner_instance_admin.MoveInstanceRequest,
-        dict,
-    ],
-)
-def test_move_instance_rest_call_success(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"name": "projects/sample1/instances/sample2"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation(name="operations/spam")
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.move_instance(request)
-
-    # Establish that the response is the type that we expect.
-    json_return_value = json_format.MessageToJson(return_value)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_move_instance_rest_interceptors(null_interceptor):
-    transport = transports.InstanceAdminRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None
-        if null_interceptor
-        else transports.InstanceAdminRestInterceptor(),
-    )
-    client = InstanceAdminClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        operation.Operation, "_set_result_from_operation"
-    ), mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_move_instance"
-    ) as post, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "post_move_instance_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.InstanceAdminRestInterceptor, "pre_move_instance"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner_instance_admin.MoveInstanceRequest.pb(
-            spanner_instance_admin.MoveInstanceRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = json_format.MessageToJson(operations_pb2.Operation())
-        req.return_value.content = return_value
-
-        request = spanner_instance_admin.MoveInstanceRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = operations_pb2.Operation()
-        post_with_metadata.return_value = operations_pb2.Operation(), metadata
-
-        client.move_instance(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_cancel_operation_rest_bad_request(
-    request_type=operations_pb2.CancelOperationRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {
-            "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-        },
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.cancel_operation(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.CancelOperationRequest,
-        dict,
-    ],
-)
-def test_cancel_operation_rest(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = "{}"
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.cancel_operation(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_operation_rest_bad_request(
-    request_type=operations_pb2.DeleteOperationRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {
-            "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-        },
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_operation(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.DeleteOperationRequest,
-        dict,
-    ],
-)
-def test_delete_operation_rest(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = "{}"
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.delete_operation(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_get_operation_rest_bad_request(
-    request_type=operations_pb2.GetOperationRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {
-            "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-        },
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_operation(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.GetOperationRequest,
-        dict,
-    ],
-)
-def test_get_operation_rest(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations/sample4"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.Operation()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.get_operation(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.Operation)
-
-
-def test_list_operations_rest_bad_request(
-    request_type=operations_pb2.ListOperationsRequest,
-):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type()
-    request = json_format.ParseDict(
-        {"name": "projects/sample1/instances/sample2/databases/sample3/operations"},
-        request,
-    )
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = Request()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_operations(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        operations_pb2.ListOperationsRequest,
-        dict,
-    ],
-)
-def test_list_operations_rest(request_type):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/operations"
-    }
-    request = request_type(**request_init)
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = operations_pb2.ListOperationsResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        response = client.list_operations(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.ListOperationsResponse)
-
-
-def test_initialize_client_w_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_configs_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_configs), "__call__"
-    ) as call:
-        client.list_instance_configs(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstanceConfigsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_instance_config_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_config), "__call__"
-    ) as call:
-        client.get_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_instance_config_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_config), "__call__"
-    ) as call:
-        client.create_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_instance_config_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_config), "__call__"
-    ) as call:
-        client.update_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_instance_config_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_config), "__call__"
-    ) as call:
-        client.delete_instance_config(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstanceConfigRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_config_operations_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_config_operations), "__call__"
-    ) as call:
-        client.list_instance_config_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstanceConfigOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instances_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_instances), "__call__") as call:
-        client.list_instances(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancesRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_partitions_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partitions), "__call__"
-    ) as call:
-        client.list_instance_partitions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancePartitionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_instance_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_instance), "__call__") as call:
-        client.get_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_instance_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_instance), "__call__") as call:
-        client.create_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_instance_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.update_instance), "__call__") as call:
-        client.update_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_instance_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_instance), "__call__") as call:
-        client.delete_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_set_iam_policy_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
-        client.set_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.SetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_iam_policy_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_iam_policy), "__call__") as call:
-        client.get_iam_policy(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.GetIamPolicyRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_test_iam_permissions_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.test_iam_permissions), "__call__"
-    ) as call:
-        client.test_iam_permissions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = iam_policy_pb2.TestIamPermissionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_instance_partition_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.get_instance_partition), "__call__"
-    ) as call:
-        client.get_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.GetInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_instance_partition_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.create_instance_partition), "__call__"
-    ) as call:
-        client.create_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.CreateInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_instance_partition_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.delete_instance_partition), "__call__"
-    ) as call:
-        client.delete_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.DeleteInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_update_instance_partition_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.update_instance_partition), "__call__"
-    ) as call:
-        client.update_instance_partition(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.UpdateInstancePartitionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_instance_partition_operations_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_instance_partition_operations), "__call__"
-    ) as call:
-        client.list_instance_partition_operations(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.ListInstancePartitionOperationsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_move_instance_empty_call_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.move_instance), "__call__") as call:
-        client.move_instance(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner_instance_admin.MoveInstanceRequest()
-
-        assert args[0] == request_msg
-
-
-def test_instance_admin_rest_lro_client():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    transport = client.transport
-
-    # Ensure that we have an api-core operations client.
-    assert isinstance(
-        transport.operations_client,
-        operations_v1.AbstractOperationsClient,
-    )
-
-    # Ensure that subsequent calls to the property send the exact same object.
-    assert transport.operations_client is transport.operations_client
-
-
-def test_transport_grpc_default():
-    # A client should use the gRPC transport by default.
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    assert isinstance(
-        client.transport,
-        transports.InstanceAdminGrpcTransport,
-    )
-
-
-def test_instance_admin_base_transport_error():
-    # Passing both a credentials object and credentials_file should raise an error
-    with pytest.raises(core_exceptions.DuplicateCredentialArgs):
-        transport = transports.InstanceAdminTransport(
-            credentials=ga_credentials.AnonymousCredentials(),
-            credentials_file="credentials.json",
-        )
-
-
-def test_instance_admin_base_transport():
-    # Instantiate the base transport.
-    with mock.patch(
-        "google.cloud.spanner_admin_instance_v1.services.instance_admin.transports.InstanceAdminTransport.__init__"
-    ) as Transport:
-        Transport.return_value = None
-        transport = transports.InstanceAdminTransport(
-            credentials=ga_credentials.AnonymousCredentials(),
-        )
-
-    # Every method on the transport should just blindly
-    # raise NotImplementedError.
-    methods = (
-        "list_instance_configs",
-        "get_instance_config",
-        "create_instance_config",
-        "update_instance_config",
-        "delete_instance_config",
-        "list_instance_config_operations",
-        "list_instances",
-        "list_instance_partitions",
-        "get_instance",
-        "create_instance",
-        "update_instance",
-        "delete_instance",
-        "set_iam_policy",
-        "get_iam_policy",
-        "test_iam_permissions",
-        "get_instance_partition",
-        "create_instance_partition",
-        "delete_instance_partition",
-        "update_instance_partition",
-        "list_instance_partition_operations",
-        "move_instance",
-        "get_operation",
-        "cancel_operation",
-        "delete_operation",
-        "list_operations",
-    )
-    for method in methods:
-        with pytest.raises(NotImplementedError):
-            getattr(transport, method)(request=object())
-
-    with pytest.raises(NotImplementedError):
-        transport.close()
-
-    # Additionally, the LRO client (a property) should
-    # also raise NotImplementedError
-    with pytest.raises(NotImplementedError):
-        transport.operations_client
-
-    # Catch all for all remaining methods and properties
-    remainder = [
-        "kind",
-    ]
-    for r in remainder:
-        with pytest.raises(NotImplementedError):
-            getattr(transport, r)()
-
-
-def test_instance_admin_base_transport_with_credentials_file():
-    # Instantiate the base transport with a credentials file
-    with mock.patch.object(
-        google.auth, "load_credentials_from_file", autospec=True
-    ) as load_creds, mock.patch(
-        "google.cloud.spanner_admin_instance_v1.services.instance_admin.transports.InstanceAdminTransport._prep_wrapped_messages"
-    ) as Transport:
-        Transport.return_value = None
-        load_creds.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport = transports.InstanceAdminTransport(
-            credentials_file="credentials.json",
-            quota_project_id="octopus",
-        )
-        load_creds.assert_called_once_with(
-            "credentials.json",
-            scopes=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            quota_project_id="octopus",
-        )
-
-
-def test_instance_admin_base_transport_with_adc():
-    # Test the default credentials are used if credentials and credentials_file are None.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc, mock.patch(
-        "google.cloud.spanner_admin_instance_v1.services.instance_admin.transports.InstanceAdminTransport._prep_wrapped_messages"
-    ) as Transport:
-        Transport.return_value = None
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport = transports.InstanceAdminTransport()
-        adc.assert_called_once()
-
-
-def test_instance_admin_auth_adc():
-    # If no credentials are provided, we should use ADC credentials.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        InstanceAdminClient()
-        adc.assert_called_once_with(
-            scopes=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            quota_project_id=None,
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.InstanceAdminGrpcTransport,
-        transports.InstanceAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_instance_admin_transport_auth_adc(transport_class):
-    # If credentials and host are not provided, the transport class should use
-    # ADC credentials.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport_class(quota_project_id="octopus", scopes=["1", "2"])
-        adc.assert_called_once_with(
-            scopes=["1", "2"],
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            quota_project_id="octopus",
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.InstanceAdminGrpcTransport,
-        transports.InstanceAdminGrpcAsyncIOTransport,
-        transports.InstanceAdminRestTransport,
-    ],
-)
-def test_instance_admin_transport_auth_gdch_credentials(transport_class):
-    host = "https://language.com"
-    api_audience_tests = [None, "https://language2.com"]
-    api_audience_expect = [host, "https://language2.com"]
-    for t, e in zip(api_audience_tests, api_audience_expect):
-        with mock.patch.object(google.auth, "default", autospec=True) as adc:
-            gdch_mock = mock.MagicMock()
-            type(gdch_mock).with_gdch_audience = mock.PropertyMock(
-                return_value=gdch_mock
-            )
-            adc.return_value = (gdch_mock, None)
-            transport_class(host=host, api_audience=t)
-            gdch_mock.with_gdch_audience.assert_called_once_with(e)
-
-
-@pytest.mark.parametrize(
-    "transport_class,grpc_helpers",
-    [
-        (transports.InstanceAdminGrpcTransport, grpc_helpers),
-        (transports.InstanceAdminGrpcAsyncIOTransport, grpc_helpers_async),
-    ],
-)
-def test_instance_admin_transport_create_channel(transport_class, grpc_helpers):
-    # If credentials and host are not provided, the transport class should use
-    # ADC credentials.
-    with mock.patch.object(
-        google.auth, "default", autospec=True
-    ) as adc, mock.patch.object(
-        grpc_helpers, "create_channel", autospec=True
-    ) as create_channel:
-        creds = ga_credentials.AnonymousCredentials()
-        adc.return_value = (creds, None)
-        transport_class(quota_project_id="octopus", scopes=["1", "2"])
-
-        create_channel.assert_called_with(
-            "spanner.googleapis.com:443",
-            credentials=creds,
-            credentials_file=None,
-            quota_project_id="octopus",
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.admin",
-            ),
-            scopes=["1", "2"],
-            default_host="spanner.googleapis.com",
-            ssl_credentials=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.InstanceAdminGrpcTransport,
-        transports.InstanceAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_instance_admin_grpc_transport_client_cert_source_for_mtls(transport_class):
-    cred = ga_credentials.AnonymousCredentials()
-
-    # Check ssl_channel_credentials is used if provided.
-    with mock.patch.object(transport_class, "create_channel") as mock_create_channel:
-        mock_ssl_channel_creds = mock.Mock()
-        transport_class(
-            host="squid.clam.whelk",
-            credentials=cred,
-            ssl_channel_credentials=mock_ssl_channel_creds,
-        )
-        mock_create_channel.assert_called_once_with(
-            "squid.clam.whelk:443",
-            credentials=cred,
-            credentials_file=None,
-            scopes=None,
-            ssl_credentials=mock_ssl_channel_creds,
-            quota_project_id=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-    # Check if ssl_channel_credentials is not provided, then client_cert_source_for_mtls
-    # is used.
-    with mock.patch.object(transport_class, "create_channel", return_value=mock.Mock()):
-        with mock.patch("grpc.ssl_channel_credentials") as mock_ssl_cred:
-            transport_class(
-                credentials=cred,
-                client_cert_source_for_mtls=client_cert_source_callback,
-            )
-            expected_cert, expected_key = client_cert_source_callback()
-            mock_ssl_cred.assert_called_once_with(
-                certificate_chain=expected_cert, private_key=expected_key
-            )
-
-
-def test_instance_admin_http_transport_client_cert_source_for_mtls():
-    cred = ga_credentials.AnonymousCredentials()
-    with mock.patch(
-        "google.auth.transport.requests.AuthorizedSession.configure_mtls_channel"
-    ) as mock_configure_mtls_channel:
-        transports.InstanceAdminRestTransport(
-            credentials=cred, client_cert_source_for_mtls=client_cert_source_callback
-        )
-        mock_configure_mtls_channel.assert_called_once_with(client_cert_source_callback)
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "grpc",
-        "grpc_asyncio",
-        "rest",
-    ],
-)
-def test_instance_admin_host_no_port(transport_name):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        client_options=client_options.ClientOptions(
-            api_endpoint="spanner.googleapis.com"
-        ),
-        transport=transport_name,
-    )
-    assert client.transport._host == (
-        "spanner.googleapis.com:443"
-        if transport_name in ["grpc", "grpc_asyncio"]
-        else "https://spanner.googleapis.com"
-    )
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "grpc",
-        "grpc_asyncio",
-        "rest",
-    ],
-)
-def test_instance_admin_host_with_port(transport_name):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        client_options=client_options.ClientOptions(
-            api_endpoint="spanner.googleapis.com:8000"
-        ),
-        transport=transport_name,
-    )
-    assert client.transport._host == (
-        "spanner.googleapis.com:8000"
-        if transport_name in ["grpc", "grpc_asyncio"]
-        else "https://spanner.googleapis.com:8000"
-    )
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "rest",
-    ],
-)
-def test_instance_admin_client_transport_session_collision(transport_name):
-    creds1 = ga_credentials.AnonymousCredentials()
-    creds2 = ga_credentials.AnonymousCredentials()
-    client1 = InstanceAdminClient(
-        credentials=creds1,
-        transport=transport_name,
-    )
-    client2 = InstanceAdminClient(
-        credentials=creds2,
-        transport=transport_name,
-    )
-    session1 = client1.transport.list_instance_configs._session
-    session2 = client2.transport.list_instance_configs._session
-    assert session1 != session2
-    session1 = client1.transport.get_instance_config._session
-    session2 = client2.transport.get_instance_config._session
-    assert session1 != session2
-    session1 = client1.transport.create_instance_config._session
-    session2 = client2.transport.create_instance_config._session
-    assert session1 != session2
-    session1 = client1.transport.update_instance_config._session
-    session2 = client2.transport.update_instance_config._session
-    assert session1 != session2
-    session1 = client1.transport.delete_instance_config._session
-    session2 = client2.transport.delete_instance_config._session
-    assert session1 != session2
-    session1 = client1.transport.list_instance_config_operations._session
-    session2 = client2.transport.list_instance_config_operations._session
-    assert session1 != session2
-    session1 = client1.transport.list_instances._session
-    session2 = client2.transport.list_instances._session
-    assert session1 != session2
-    session1 = client1.transport.list_instance_partitions._session
-    session2 = client2.transport.list_instance_partitions._session
-    assert session1 != session2
-    session1 = client1.transport.get_instance._session
-    session2 = client2.transport.get_instance._session
-    assert session1 != session2
-    session1 = client1.transport.create_instance._session
-    session2 = client2.transport.create_instance._session
-    assert session1 != session2
-    session1 = client1.transport.update_instance._session
-    session2 = client2.transport.update_instance._session
-    assert session1 != session2
-    session1 = client1.transport.delete_instance._session
-    session2 = client2.transport.delete_instance._session
-    assert session1 != session2
-    session1 = client1.transport.set_iam_policy._session
-    session2 = client2.transport.set_iam_policy._session
-    assert session1 != session2
-    session1 = client1.transport.get_iam_policy._session
-    session2 = client2.transport.get_iam_policy._session
-    assert session1 != session2
-    session1 = client1.transport.test_iam_permissions._session
-    session2 = client2.transport.test_iam_permissions._session
-    assert session1 != session2
-    session1 = client1.transport.get_instance_partition._session
-    session2 = client2.transport.get_instance_partition._session
-    assert session1 != session2
-    session1 = client1.transport.create_instance_partition._session
-    session2 = client2.transport.create_instance_partition._session
-    assert session1 != session2
-    session1 = client1.transport.delete_instance_partition._session
-    session2 = client2.transport.delete_instance_partition._session
-    assert session1 != session2
-    session1 = client1.transport.update_instance_partition._session
-    session2 = client2.transport.update_instance_partition._session
-    assert session1 != session2
-    session1 = client1.transport.list_instance_partition_operations._session
-    session2 = client2.transport.list_instance_partition_operations._session
-    assert session1 != session2
-    session1 = client1.transport.move_instance._session
-    session2 = client2.transport.move_instance._session
-    assert session1 != session2
-
-
-def test_instance_admin_grpc_transport_channel():
-    channel = grpc.secure_channel("http://localhost/", grpc.local_channel_credentials())
-
-    # Check that channel is used if provided.
-    transport = transports.InstanceAdminGrpcTransport(
-        host="squid.clam.whelk",
-        channel=channel,
-    )
-    assert transport.grpc_channel == channel
-    assert transport._host == "squid.clam.whelk:443"
-    assert transport._ssl_channel_credentials == None
-
-
-def test_instance_admin_grpc_asyncio_transport_channel():
-    channel = aio.secure_channel("http://localhost/", grpc.local_channel_credentials())
-
-    # Check that channel is used if provided.
-    transport = transports.InstanceAdminGrpcAsyncIOTransport(
-        host="squid.clam.whelk",
-        channel=channel,
-    )
-    assert transport.grpc_channel == channel
-    assert transport._host == "squid.clam.whelk:443"
-    assert transport._ssl_channel_credentials == None
-
-
-# Remove this test when deprecated arguments (api_mtls_endpoint, client_cert_source) are
-# removed from grpc/grpc_asyncio transport constructor.
-@pytest.mark.filterwarnings("ignore::FutureWarning")
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.InstanceAdminGrpcTransport,
-        transports.InstanceAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_instance_admin_transport_channel_mtls_with_client_cert_source(transport_class):
-    with mock.patch(
-        "grpc.ssl_channel_credentials", autospec=True
-    ) as grpc_ssl_channel_cred:
-        with mock.patch.object(
-            transport_class, "create_channel"
-        ) as grpc_create_channel:
-            mock_ssl_cred = mock.Mock()
-            grpc_ssl_channel_cred.return_value = mock_ssl_cred
-
-            mock_grpc_channel = mock.Mock()
-            grpc_create_channel.return_value = mock_grpc_channel
-
-            cred = ga_credentials.AnonymousCredentials()
-            with pytest.warns(DeprecationWarning):
-                with mock.patch.object(google.auth, "default") as adc:
-                    adc.return_value = (cred, None)
-                    transport = transport_class(
-                        host="squid.clam.whelk",
-                        api_mtls_endpoint="mtls.squid.clam.whelk",
-                        client_cert_source=client_cert_source_callback,
-                    )
-                    adc.assert_called_once()
-
-            grpc_ssl_channel_cred.assert_called_once_with(
-                certificate_chain=b"cert bytes", private_key=b"key bytes"
-            )
-            grpc_create_channel.assert_called_once_with(
-                "mtls.squid.clam.whelk:443",
-                credentials=cred,
-                credentials_file=None,
-                scopes=None,
-                ssl_credentials=mock_ssl_cred,
-                quota_project_id=None,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-            assert transport.grpc_channel == mock_grpc_channel
-            assert transport._ssl_channel_credentials == mock_ssl_cred
-
-
-# Remove this test when deprecated arguments (api_mtls_endpoint, client_cert_source) are
-# removed from grpc/grpc_asyncio transport constructor.
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.InstanceAdminGrpcTransport,
-        transports.InstanceAdminGrpcAsyncIOTransport,
-    ],
-)
-def test_instance_admin_transport_channel_mtls_with_adc(transport_class):
-    mock_ssl_cred = mock.Mock()
-    with mock.patch.multiple(
-        "google.auth.transport.grpc.SslCredentials",
-        __init__=mock.Mock(return_value=None),
-        ssl_credentials=mock.PropertyMock(return_value=mock_ssl_cred),
-    ):
-        with mock.patch.object(
-            transport_class, "create_channel"
-        ) as grpc_create_channel:
-            mock_grpc_channel = mock.Mock()
-            grpc_create_channel.return_value = mock_grpc_channel
-            mock_cred = mock.Mock()
-
-            with pytest.warns(DeprecationWarning):
-                transport = transport_class(
-                    host="squid.clam.whelk",
-                    credentials=mock_cred,
-                    api_mtls_endpoint="mtls.squid.clam.whelk",
-                    client_cert_source=None,
-                )
-
-            grpc_create_channel.assert_called_once_with(
-                "mtls.squid.clam.whelk:443",
-                credentials=mock_cred,
-                credentials_file=None,
-                scopes=None,
-                ssl_credentials=mock_ssl_cred,
-                quota_project_id=None,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-            assert transport.grpc_channel == mock_grpc_channel
-
-
-def test_instance_admin_grpc_lro_client():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-    transport = client.transport
-
-    # Ensure that we have a api-core operations client.
-    assert isinstance(
-        transport.operations_client,
-        operations_v1.OperationsClient,
-    )
-
-    # Ensure that subsequent calls to the property send the exact same object.
-    assert transport.operations_client is transport.operations_client
-
-
-def test_instance_admin_grpc_lro_async_client():
-    client = InstanceAdminAsyncClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc_asyncio",
-    )
-    transport = client.transport
-
-    # Ensure that we have a api-core operations client.
-    assert isinstance(
-        transport.operations_client,
-        operations_v1.OperationsAsyncClient,
-    )
-
-    # Ensure that subsequent calls to the property send the exact same object.
-    assert transport.operations_client is transport.operations_client
-
-
-def test_instance_path():
-    project = "squid"
-    instance = "clam"
-    expected = "projects/{project}/instances/{instance}".format(
-        project=project,
-        instance=instance,
-    )
-    actual = InstanceAdminClient.instance_path(project, instance)
-    assert expected == actual
-
-
-def test_parse_instance_path():
-    expected = {
-        "project": "whelk",
-        "instance": "octopus",
-    }
-    path = InstanceAdminClient.instance_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_instance_path(path)
-    assert expected == actual
-
-
-def test_instance_config_path():
-    project = "oyster"
-    instance_config = "nudibranch"
-    expected = "projects/{project}/instanceConfigs/{instance_config}".format(
-        project=project,
-        instance_config=instance_config,
-    )
-    actual = InstanceAdminClient.instance_config_path(project, instance_config)
-    assert expected == actual
-
-
-def test_parse_instance_config_path():
-    expected = {
-        "project": "cuttlefish",
-        "instance_config": "mussel",
-    }
-    path = InstanceAdminClient.instance_config_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_instance_config_path(path)
-    assert expected == actual
-
-
-def test_instance_partition_path():
-    project = "winkle"
-    instance = "nautilus"
-    instance_partition = "scallop"
-    expected = "projects/{project}/instances/{instance}/instancePartitions/{instance_partition}".format(
-        project=project,
-        instance=instance,
-        instance_partition=instance_partition,
-    )
-    actual = InstanceAdminClient.instance_partition_path(
-        project, instance, instance_partition
-    )
-    assert expected == actual
-
-
-def test_parse_instance_partition_path():
-    expected = {
-        "project": "abalone",
-        "instance": "squid",
-        "instance_partition": "clam",
-    }
-    path = InstanceAdminClient.instance_partition_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_instance_partition_path(path)
-    assert expected == actual
-
-
-def test_common_billing_account_path():
-    billing_account = "whelk"
-    expected = "billingAccounts/{billing_account}".format(
-        billing_account=billing_account,
-    )
-    actual = InstanceAdminClient.common_billing_account_path(billing_account)
-    assert expected == actual
-
-
-def test_parse_common_billing_account_path():
-    expected = {
-        "billing_account": "octopus",
-    }
-    path = InstanceAdminClient.common_billing_account_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_common_billing_account_path(path)
-    assert expected == actual
-
-
-def test_common_folder_path():
-    folder = "oyster"
-    expected = "folders/{folder}".format(
-        folder=folder,
-    )
-    actual = InstanceAdminClient.common_folder_path(folder)
-    assert expected == actual
-
-
-def test_parse_common_folder_path():
-    expected = {
-        "folder": "nudibranch",
-    }
-    path = InstanceAdminClient.common_folder_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_common_folder_path(path)
-    assert expected == actual
-
-
-def test_common_organization_path():
-    organization = "cuttlefish"
-    expected = "organizations/{organization}".format(
-        organization=organization,
-    )
-    actual = InstanceAdminClient.common_organization_path(organization)
-    assert expected == actual
-
-
-def test_parse_common_organization_path():
-    expected = {
-        "organization": "mussel",
-    }
-    path = InstanceAdminClient.common_organization_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_common_organization_path(path)
-    assert expected == actual
-
-
-def test_common_project_path():
-    project = "winkle"
-    expected = "projects/{project}".format(
-        project=project,
-    )
-    actual = InstanceAdminClient.common_project_path(project)
-    assert expected == actual
-
-
-def test_parse_common_project_path():
-    expected = {
-        "project": "nautilus",
-    }
-    path = InstanceAdminClient.common_project_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_common_project_path(path)
-    assert expected == actual
-
-
-def test_common_location_path():
-    project = "scallop"
-    location = "abalone"
-    expected = "projects/{project}/locations/{location}".format(
-        project=project,
-        location=location,
-    )
-    actual = InstanceAdminClient.common_location_path(project, location)
-    assert expected == actual
-
-
-def test_parse_common_location_path():
-    expected = {
-        "project": "squid",
-        "location": "clam",
-    }
-    path = InstanceAdminClient.common_location_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = InstanceAdminClient.parse_common_location_path(path)
-    assert expected == actual
-
-
-def test_client_with_default_client_info():
-    client_info = gapic_v1.client_info.ClientInfo()
-
-    with mock.patch.object(
-        transports.InstanceAdminTransport, "_prep_wrapped_messages"
-    ) as prep:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            client_info=client_info,
-        )
-        prep.assert_called_once_with(client_info)
-
-    with mock.patch.object(
-        transports.InstanceAdminTransport, "_prep_wrapped_messages"
-    ) as prep:
-        transport_class = InstanceAdminClient.get_transport_class()
-        transport = transport_class(
-            credentials=ga_credentials.AnonymousCredentials(),
-            client_info=client_info,
-        )
-        prep.assert_called_once_with(client_info)
-
-
-def test_delete_operation(transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.DeleteOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_operation_async(transport: str = "grpc_asyncio"):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.DeleteOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_operation_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.DeleteOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        call.return_value = None
-
-        client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_operation_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.DeleteOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_delete_operation_from_dict():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        response = client.delete_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_delete_operation_from_dict_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_cancel_operation(transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.CancelOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_cancel_operation_async(transport: str = "grpc_asyncio"):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.CancelOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_cancel_operation_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.CancelOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        call.return_value = None
-
-        client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_cancel_operation_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.CancelOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.cancel_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_cancel_operation_from_dict():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        response = client.cancel_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_cancel_operation_from_dict_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.cancel_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.cancel_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_get_operation(transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.GetOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation()
-        response = client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.Operation)
-
-
-@pytest.mark.asyncio
-async def test_get_operation_async(transport: str = "grpc_asyncio"):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.GetOperationRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation()
-        )
-        response = await client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.Operation)
-
-
-def test_get_operation_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.GetOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        call.return_value = operations_pb2.Operation()
-
-        client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_operation_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.GetOperationRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation()
-        )
-        await client.get_operation(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_get_operation_from_dict():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.Operation()
-
-        response = client.get_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_get_operation_from_dict_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_operation), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.Operation()
-        )
-        response = await client.get_operation(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_list_operations(transport: str = "grpc"):
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.ListOperationsRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.ListOperationsResponse()
-        response = client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.ListOperationsResponse)
-
-
-@pytest.mark.asyncio
-async def test_list_operations_async(transport: str = "grpc_asyncio"):
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = operations_pb2.ListOperationsRequest()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.ListOperationsResponse()
-        )
-        response = await client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, operations_pb2.ListOperationsResponse)
-
-
-def test_list_operations_field_headers():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.ListOperationsRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        call.return_value = operations_pb2.ListOperationsResponse()
-
-        client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_operations_field_headers_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = operations_pb2.ListOperationsRequest()
-    request.name = "locations"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.ListOperationsResponse()
-        )
-        await client.list_operations(request)
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=locations",
-    ) in kw["metadata"]
-
-
-def test_list_operations_from_dict():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = operations_pb2.ListOperationsResponse()
-
-        response = client.list_operations(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-@pytest.mark.asyncio
-async def test_list_operations_from_dict_async():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_operations), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            operations_pb2.ListOperationsResponse()
-        )
-        response = await client.list_operations(
-            request={
-                "name": "locations",
-            }
-        )
-        call.assert_called()
-
-
-def test_transport_close_grpc():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="grpc"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_grpc_channel")), "close"
-    ) as close:
-        with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-@pytest.mark.asyncio
-async def test_transport_close_grpc_asyncio():
-    client = InstanceAdminAsyncClient(
-        credentials=async_anonymous_credentials(), transport="grpc_asyncio"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_grpc_channel")), "close"
-    ) as close:
-        async with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-def test_transport_close_rest():
-    client = InstanceAdminClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_session")), "close"
-    ) as close:
-        with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-def test_client_ctx():
-    transports = [
-        "rest",
-        "grpc",
-    ]
-    for transport in transports:
-        client = InstanceAdminClient(
-            credentials=ga_credentials.AnonymousCredentials(), transport=transport
-        )
-        # Test client calls underlying transport.
-        with mock.patch.object(type(client.transport), "close") as close:
-            close.assert_not_called()
-            with client:
-                pass
-            close.assert_called()
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class",
-    [
-        (InstanceAdminClient, transports.InstanceAdminGrpcTransport),
-        (InstanceAdminAsyncClient, transports.InstanceAdminGrpcAsyncIOTransport),
-    ],
-)
-def test_api_key_credentials(client_class, transport_class):
-    with mock.patch.object(
-        google.auth._default, "get_api_key_credentials", create=True
-    ) as get_api_key_credentials:
-        mock_cred = mock.Mock()
-        get_api_key_credentials.return_value = mock_cred
-        options = client_options.ClientOptions()
-        options.api_key = "api_key"
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(client_options=options)
-            patched.assert_called_once_with(
-                credentials=mock_cred,
-                credentials_file=None,
-                host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                ),
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-            )
diff --git a/tests/unit/gapic/spanner_v1/__init__.py b/tests/unit/gapic/spanner_v1/__init__.py
deleted file mode 100644
index cbf94b283c..0000000000
--- a/tests/unit/gapic/spanner_v1/__init__.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
diff --git a/tests/unit/gapic/spanner_v1/test_spanner.py b/tests/unit/gapic/spanner_v1/test_spanner.py
deleted file mode 100644
index 234ba40260..0000000000
--- a/tests/unit/gapic/spanner_v1/test_spanner.py
+++ /dev/null
@@ -1,12940 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import os
-
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
-
-from collections.abc import AsyncIterable, Iterable
-import json
-import math
-
-from google.api_core import api_core_version
-from google.protobuf import json_format
-import grpc
-from grpc.experimental import aio
-from proto.marshal.rules import wrappers
-from proto.marshal.rules.dates import DurationRule, TimestampRule
-import pytest
-from requests import PreparedRequest, Request, Response
-from requests.sessions import Session
-
-try:
-    from google.auth.aio import credentials as ga_credentials_async
-
-    HAS_GOOGLE_AUTH_AIO = True
-except ImportError:  # pragma: NO COVER
-    HAS_GOOGLE_AUTH_AIO = False
-
-from google.api_core import gapic_v1, grpc_helpers, grpc_helpers_async, path_template
-from google.api_core import client_options
-from google.api_core import exceptions as core_exceptions
-from google.api_core import retry as retries
-import google.auth
-from google.auth import credentials as ga_credentials
-from google.auth.exceptions import MutualTLSChannelError
-from google.oauth2 import service_account
-from google.protobuf import duration_pb2  # type: ignore
-from google.protobuf import struct_pb2  # type: ignore
-from google.protobuf import timestamp_pb2  # type: ignore
-from google.rpc import status_pb2  # type: ignore
-
-from google.cloud.spanner_v1.services.spanner import (
-    SpannerAsyncClient,
-    SpannerClient,
-    pagers,
-    transports,
-)
-from google.cloud.spanner_v1.types import (
-    commit_response,
-    keys,
-    location,
-    mutation,
-    result_set,
-    spanner,
-    transaction,
-)
-from google.cloud.spanner_v1.types import type as gs_type
-
-CRED_INFO_JSON = {
-    "credential_source": "/path/to/file",
-    "credential_type": "service account credentials",
-    "principal": "service-account@example.com",
-}
-CRED_INFO_STRING = json.dumps(CRED_INFO_JSON)
-
-
-async def mock_async_gen(data, chunk_size=1):
-    for i in range(0, len(data)):  # pragma: NO COVER
-        chunk = data[i : i + chunk_size]
-        yield chunk.encode("utf-8")
-
-
-def client_cert_source_callback():
-    return b"cert bytes", b"key bytes"
-
-
-# TODO: use async auth anon credentials by default once the minimum version of google-auth is upgraded.
-# See related issue: https://github.com/googleapis/gapic-generator-python/issues/2107.
-def async_anonymous_credentials():
-    if HAS_GOOGLE_AUTH_AIO:
-        return ga_credentials_async.AnonymousCredentials()
-    return ga_credentials.AnonymousCredentials()
-
-
-# If default endpoint is localhost, then default mtls endpoint will be the same.
-# This method modifies the default endpoint so the client can produce a different
-# mtls endpoint for endpoint testing purposes.
-def modify_default_endpoint(client):
-    return (
-        "foo.googleapis.com"
-        if ("localhost" in client.DEFAULT_ENDPOINT)
-        else client.DEFAULT_ENDPOINT
-    )
-
-
-# If default endpoint template is localhost, then default mtls endpoint will be the same.
-# This method modifies the default endpoint template so the client can produce a different
-# mtls endpoint for endpoint testing purposes.
-def modify_default_endpoint_template(client):
-    return (
-        "test.{UNIVERSE_DOMAIN}"
-        if ("localhost" in client._DEFAULT_ENDPOINT_TEMPLATE)
-        else client._DEFAULT_ENDPOINT_TEMPLATE
-    )
-
-
-def test__get_default_mtls_endpoint():
-    api_endpoint = "example.googleapis.com"
-    api_mtls_endpoint = "example.mtls.googleapis.com"
-    sandbox_endpoint = "example.sandbox.googleapis.com"
-    sandbox_mtls_endpoint = "example.mtls.sandbox.googleapis.com"
-    non_googleapi = "api.example.com"
-
-    assert SpannerClient._get_default_mtls_endpoint(None) is None
-    assert SpannerClient._get_default_mtls_endpoint(api_endpoint) == api_mtls_endpoint
-    assert (
-        SpannerClient._get_default_mtls_endpoint(api_mtls_endpoint) == api_mtls_endpoint
-    )
-    assert (
-        SpannerClient._get_default_mtls_endpoint(sandbox_endpoint)
-        == sandbox_mtls_endpoint
-    )
-    assert (
-        SpannerClient._get_default_mtls_endpoint(sandbox_mtls_endpoint)
-        == sandbox_mtls_endpoint
-    )
-    assert SpannerClient._get_default_mtls_endpoint(non_googleapi) == non_googleapi
-
-
-def test__read_environment_variables():
-    assert SpannerClient._read_environment_variables() == (False, "auto", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        assert SpannerClient._read_environment_variables() == (True, "auto", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}):
-        assert SpannerClient._read_environment_variables() == (False, "auto", None)
-
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "Unsupported"}
-    ):
-        if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-            with pytest.raises(ValueError) as excinfo:
-                SpannerClient._read_environment_variables()
-            assert (
-                str(excinfo.value)
-                == "Environment variable `GOOGLE_API_USE_CLIENT_CERTIFICATE` must be either `true` or `false`"
-            )
-        else:
-            assert SpannerClient._read_environment_variables() == (
-                False,
-                "auto",
-                None,
-            )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        assert SpannerClient._read_environment_variables() == (False, "never", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        assert SpannerClient._read_environment_variables() == (False, "always", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "auto"}):
-        assert SpannerClient._read_environment_variables() == (False, "auto", None)
-
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            SpannerClient._read_environment_variables()
-    assert (
-        str(excinfo.value)
-        == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-    )
-
-    with mock.patch.dict(os.environ, {"GOOGLE_CLOUD_UNIVERSE_DOMAIN": "foo.com"}):
-        assert SpannerClient._read_environment_variables() == (False, "auto", "foo.com")
-
-
-def test_use_client_cert_effective():
-    # Test case 1: Test when `should_use_client_cert` returns True.
-    # We mock the `should_use_client_cert` function to simulate a scenario where
-    # the google-auth library supports automatic mTLS and determines that a
-    # client certificate should be used.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch(
-            "google.auth.transport.mtls.should_use_client_cert", return_value=True
-        ):
-            assert SpannerClient._use_client_cert_effective() is True
-
-    # Test case 2: Test when `should_use_client_cert` returns False.
-    # We mock the `should_use_client_cert` function to simulate a scenario where
-    # the google-auth library supports automatic mTLS and determines that a
-    # client certificate should NOT be used.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch(
-            "google.auth.transport.mtls.should_use_client_cert", return_value=False
-        ):
-            assert SpannerClient._use_client_cert_effective() is False
-
-    # Test case 3: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "true".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-            assert SpannerClient._use_client_cert_effective() is True
-
-    # Test case 4: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "false".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}
-        ):
-            assert SpannerClient._use_client_cert_effective() is False
-
-    # Test case 5: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "True".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "True"}):
-            assert SpannerClient._use_client_cert_effective() is True
-
-    # Test case 6: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "False".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "False"}
-        ):
-            assert SpannerClient._use_client_cert_effective() is False
-
-    # Test case 7: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "TRUE".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "TRUE"}):
-            assert SpannerClient._use_client_cert_effective() is True
-
-    # Test case 8: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to "FALSE".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "FALSE"}
-        ):
-            assert SpannerClient._use_client_cert_effective() is False
-
-    # Test case 9: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is not set.
-    # In this case, the method should return False, which is the default value.
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, clear=True):
-            assert SpannerClient._use_client_cert_effective() is False
-
-    # Test case 10: Test when `should_use_client_cert` is unavailable and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to an invalid value.
-    # The method should raise a ValueError as the environment variable must be either
-    # "true" or "false".
-    if not hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "unsupported"}
-        ):
-            with pytest.raises(ValueError):
-                SpannerClient._use_client_cert_effective()
-
-    # Test case 11: Test when `should_use_client_cert` is available and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is set to an invalid value.
-    # The method should return False as the environment variable is set to an invalid value.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(
-            os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "unsupported"}
-        ):
-            assert SpannerClient._use_client_cert_effective() is False
-
-    # Test case 12: Test when `should_use_client_cert` is available and the
-    # `GOOGLE_API_USE_CLIENT_CERTIFICATE` environment variable is unset. Also,
-    # the GOOGLE_API_CONFIG environment variable is unset.
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": ""}):
-            with mock.patch.dict(os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": ""}):
-                assert SpannerClient._use_client_cert_effective() is False
-
-
-def test__get_client_cert_source():
-    mock_provided_cert_source = mock.Mock()
-    mock_default_cert_source = mock.Mock()
-
-    assert SpannerClient._get_client_cert_source(None, False) is None
-    assert (
-        SpannerClient._get_client_cert_source(mock_provided_cert_source, False) is None
-    )
-    assert (
-        SpannerClient._get_client_cert_source(mock_provided_cert_source, True)
-        == mock_provided_cert_source
-    )
-
-    with mock.patch(
-        "google.auth.transport.mtls.has_default_client_cert_source", return_value=True
-    ):
-        with mock.patch(
-            "google.auth.transport.mtls.default_client_cert_source",
-            return_value=mock_default_cert_source,
-        ):
-            assert (
-                SpannerClient._get_client_cert_source(None, True)
-                is mock_default_cert_source
-            )
-            assert (
-                SpannerClient._get_client_cert_source(mock_provided_cert_source, "true")
-                is mock_provided_cert_source
-            )
-
-
-@mock.patch.object(
-    SpannerClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerClient),
-)
-@mock.patch.object(
-    SpannerAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerAsyncClient),
-)
-def test__get_api_endpoint():
-    api_override = "foo.com"
-    mock_client_cert_source = mock.Mock()
-    default_universe = SpannerClient._DEFAULT_UNIVERSE
-    default_endpoint = SpannerClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=default_universe
-    )
-    mock_universe = "bar.com"
-    mock_endpoint = SpannerClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=mock_universe
-    )
-
-    assert (
-        SpannerClient._get_api_endpoint(
-            api_override, mock_client_cert_source, default_universe, "always"
-        )
-        == api_override
-    )
-    assert (
-        SpannerClient._get_api_endpoint(
-            None, mock_client_cert_source, default_universe, "auto"
-        )
-        == SpannerClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        SpannerClient._get_api_endpoint(None, None, default_universe, "auto")
-        == default_endpoint
-    )
-    assert (
-        SpannerClient._get_api_endpoint(None, None, default_universe, "always")
-        == SpannerClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        SpannerClient._get_api_endpoint(
-            None, mock_client_cert_source, default_universe, "always"
-        )
-        == SpannerClient.DEFAULT_MTLS_ENDPOINT
-    )
-    assert (
-        SpannerClient._get_api_endpoint(None, None, mock_universe, "never")
-        == mock_endpoint
-    )
-    assert (
-        SpannerClient._get_api_endpoint(None, None, default_universe, "never")
-        == default_endpoint
-    )
-
-    with pytest.raises(MutualTLSChannelError) as excinfo:
-        SpannerClient._get_api_endpoint(
-            None, mock_client_cert_source, mock_universe, "auto"
-        )
-    assert (
-        str(excinfo.value)
-        == "mTLS is not supported in any universe other than googleapis.com."
-    )
-
-
-def test__get_universe_domain():
-    client_universe_domain = "foo.com"
-    universe_domain_env = "bar.com"
-
-    assert (
-        SpannerClient._get_universe_domain(client_universe_domain, universe_domain_env)
-        == client_universe_domain
-    )
-    assert (
-        SpannerClient._get_universe_domain(None, universe_domain_env)
-        == universe_domain_env
-    )
-    assert (
-        SpannerClient._get_universe_domain(None, None)
-        == SpannerClient._DEFAULT_UNIVERSE
-    )
-
-    with pytest.raises(ValueError) as excinfo:
-        SpannerClient._get_universe_domain("", None)
-    assert str(excinfo.value) == "Universe Domain cannot be an empty string."
-
-
-@pytest.mark.parametrize(
-    "error_code,cred_info_json,show_cred_info",
-    [
-        (401, CRED_INFO_JSON, True),
-        (403, CRED_INFO_JSON, True),
-        (404, CRED_INFO_JSON, True),
-        (500, CRED_INFO_JSON, False),
-        (401, None, False),
-        (403, None, False),
-        (404, None, False),
-        (500, None, False),
-    ],
-)
-def test__add_cred_info_for_auth_errors(error_code, cred_info_json, show_cred_info):
-    cred = mock.Mock(["get_cred_info"])
-    cred.get_cred_info = mock.Mock(return_value=cred_info_json)
-    client = SpannerClient(credentials=cred)
-    client._transport._credentials = cred
-
-    error = core_exceptions.GoogleAPICallError("message", details=["foo"])
-    error.code = error_code
-
-    client._add_cred_info_for_auth_errors(error)
-    if show_cred_info:
-        assert error.details == ["foo", CRED_INFO_STRING]
-    else:
-        assert error.details == ["foo"]
-
-
-@pytest.mark.parametrize("error_code", [401, 403, 404, 500])
-def test__add_cred_info_for_auth_errors_no_get_cred_info(error_code):
-    cred = mock.Mock([])
-    assert not hasattr(cred, "get_cred_info")
-    client = SpannerClient(credentials=cred)
-    client._transport._credentials = cred
-
-    error = core_exceptions.GoogleAPICallError("message", details=[])
-    error.code = error_code
-
-    client._add_cred_info_for_auth_errors(error)
-    assert error.details == []
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_name",
-    [
-        (SpannerClient, "grpc"),
-        (SpannerAsyncClient, "grpc_asyncio"),
-        (SpannerClient, "rest"),
-    ],
-)
-def test_spanner_client_from_service_account_info(client_class, transport_name):
-    creds = ga_credentials.AnonymousCredentials()
-    with mock.patch.object(
-        service_account.Credentials, "from_service_account_info"
-    ) as factory:
-        factory.return_value = creds
-        info = {"valid": True}
-        client = client_class.from_service_account_info(info, transport=transport_name)
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        assert client.transport._host == (
-            "spanner.googleapis.com:443"
-            if transport_name in ["grpc", "grpc_asyncio"]
-            else "https://spanner.googleapis.com"
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class,transport_name",
-    [
-        (transports.SpannerGrpcTransport, "grpc"),
-        (transports.SpannerGrpcAsyncIOTransport, "grpc_asyncio"),
-        (transports.SpannerRestTransport, "rest"),
-    ],
-)
-def test_spanner_client_service_account_always_use_jwt(transport_class, transport_name):
-    with mock.patch.object(
-        service_account.Credentials, "with_always_use_jwt_access", create=True
-    ) as use_jwt:
-        creds = service_account.Credentials(None, None, None)
-        transport = transport_class(credentials=creds, always_use_jwt_access=True)
-        use_jwt.assert_called_once_with(True)
-
-    with mock.patch.object(
-        service_account.Credentials, "with_always_use_jwt_access", create=True
-    ) as use_jwt:
-        creds = service_account.Credentials(None, None, None)
-        transport = transport_class(credentials=creds, always_use_jwt_access=False)
-        use_jwt.assert_not_called()
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_name",
-    [
-        (SpannerClient, "grpc"),
-        (SpannerAsyncClient, "grpc_asyncio"),
-        (SpannerClient, "rest"),
-    ],
-)
-def test_spanner_client_from_service_account_file(client_class, transport_name):
-    creds = ga_credentials.AnonymousCredentials()
-    with mock.patch.object(
-        service_account.Credentials, "from_service_account_file"
-    ) as factory:
-        factory.return_value = creds
-        client = client_class.from_service_account_file(
-            "dummy/file/path.json", transport=transport_name
-        )
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        client = client_class.from_service_account_json(
-            "dummy/file/path.json", transport=transport_name
-        )
-        assert client.transport._credentials == creds
-        assert isinstance(client, client_class)
-
-        assert client.transport._host == (
-            "spanner.googleapis.com:443"
-            if transport_name in ["grpc", "grpc_asyncio"]
-            else "https://spanner.googleapis.com"
-        )
-
-
-def test_spanner_client_get_transport_class():
-    transport = SpannerClient.get_transport_class()
-    available_transports = [
-        transports.SpannerGrpcTransport,
-        transports.SpannerRestTransport,
-    ]
-    assert transport in available_transports
-
-    transport = SpannerClient.get_transport_class("grpc")
-    assert transport == transports.SpannerGrpcTransport
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name",
-    [
-        (SpannerClient, transports.SpannerGrpcTransport, "grpc"),
-        (SpannerAsyncClient, transports.SpannerGrpcAsyncIOTransport, "grpc_asyncio"),
-        (SpannerClient, transports.SpannerRestTransport, "rest"),
-    ],
-)
-@mock.patch.object(
-    SpannerClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerClient),
-)
-@mock.patch.object(
-    SpannerAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerAsyncClient),
-)
-def test_spanner_client_client_options(client_class, transport_class, transport_name):
-    # Check that if channel is provided we won't create a new one.
-    with mock.patch.object(SpannerClient, "get_transport_class") as gtc:
-        transport = transport_class(credentials=ga_credentials.AnonymousCredentials())
-        client = client_class(transport=transport)
-        gtc.assert_not_called()
-
-    # Check that if channel is provided via str we will create a new one.
-    with mock.patch.object(SpannerClient, "get_transport_class") as gtc:
-        client = client_class(transport=transport_name)
-        gtc.assert_called()
-
-    # Check the case api_endpoint is provided.
-    options = client_options.ClientOptions(api_endpoint="squid.clam.whelk")
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(transport=transport_name, client_options=options)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host="squid.clam.whelk",
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-            metrics_interceptor=mock.ANY,
-        )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT is
-    # "never".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(transport=transport_name)
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                ),
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-                metrics_interceptor=mock.ANY,
-            )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT is
-    # "always".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(transport=transport_name)
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=client.DEFAULT_MTLS_ENDPOINT,
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-                metrics_interceptor=mock.ANY,
-            )
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT has
-    # unsupported value.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            client = client_class(transport=transport_name)
-    assert (
-        str(excinfo.value)
-        == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-    )
-
-    # Check the case quota_project_id is provided
-    options = client_options.ClientOptions(quota_project_id="octopus")
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id="octopus",
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-            metrics_interceptor=mock.ANY,
-        )
-    # Check the case api_endpoint is provided
-    options = client_options.ClientOptions(
-        api_audience="https://language.googleapis.com"
-    )
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience="https://language.googleapis.com",
-            metrics_interceptor=mock.ANY,
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,use_client_cert_env",
-    [
-        (SpannerClient, transports.SpannerGrpcTransport, "grpc", "true"),
-        (
-            SpannerAsyncClient,
-            transports.SpannerGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            "true",
-        ),
-        (SpannerClient, transports.SpannerGrpcTransport, "grpc", "false"),
-        (
-            SpannerAsyncClient,
-            transports.SpannerGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            "false",
-        ),
-        (SpannerClient, transports.SpannerRestTransport, "rest", "true"),
-        (SpannerClient, transports.SpannerRestTransport, "rest", "false"),
-    ],
-)
-@mock.patch.object(
-    SpannerClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerClient),
-)
-@mock.patch.object(
-    SpannerAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerAsyncClient),
-)
-@mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "auto"})
-def test_spanner_client_mtls_env_auto(
-    client_class, transport_class, transport_name, use_client_cert_env
-):
-    # This tests the endpoint autoswitch behavior. Endpoint is autoswitched to the default
-    # mtls endpoint, if GOOGLE_API_USE_CLIENT_CERTIFICATE is "true" and client cert exists.
-
-    # Check the case client_cert_source is provided. Whether client cert is used depends on
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE value.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        options = client_options.ClientOptions(
-            client_cert_source=client_cert_source_callback
-        )
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(client_options=options, transport=transport_name)
-
-            if use_client_cert_env == "false":
-                expected_client_cert_source = None
-                expected_host = client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                )
-            else:
-                expected_client_cert_source = client_cert_source_callback
-                expected_host = client.DEFAULT_MTLS_ENDPOINT
-
-            patched.assert_called_once_with(
-                credentials=None,
-                credentials_file=None,
-                host=expected_host,
-                scopes=None,
-                client_cert_source_for_mtls=expected_client_cert_source,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-                metrics_interceptor=mock.ANY,
-            )
-
-    # Check the case ADC client cert is provided. Whether client cert is used depends on
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE value.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            with mock.patch(
-                "google.auth.transport.mtls.has_default_client_cert_source",
-                return_value=True,
-            ):
-                with mock.patch(
-                    "google.auth.transport.mtls.default_client_cert_source",
-                    return_value=client_cert_source_callback,
-                ):
-                    if use_client_cert_env == "false":
-                        expected_host = client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                            UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                        )
-                        expected_client_cert_source = None
-                    else:
-                        expected_host = client.DEFAULT_MTLS_ENDPOINT
-                        expected_client_cert_source = client_cert_source_callback
-
-                    patched.return_value = None
-                    client = client_class(transport=transport_name)
-                    patched.assert_called_once_with(
-                        credentials=None,
-                        credentials_file=None,
-                        host=expected_host,
-                        scopes=None,
-                        client_cert_source_for_mtls=expected_client_cert_source,
-                        quota_project_id=None,
-                        client_info=transports.base.DEFAULT_CLIENT_INFO,
-                        always_use_jwt_access=True,
-                        api_audience=None,
-                        metrics_interceptor=mock.ANY,
-                    )
-
-    # Check the case client_cert_source and ADC client cert are not provided.
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": use_client_cert_env}
-    ):
-        with mock.patch.object(transport_class, "__init__") as patched:
-            with mock.patch(
-                "google.auth.transport.mtls.has_default_client_cert_source",
-                return_value=False,
-            ):
-                patched.return_value = None
-                client = client_class(transport=transport_name)
-                patched.assert_called_once_with(
-                    credentials=None,
-                    credentials_file=None,
-                    host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                        UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                    ),
-                    scopes=None,
-                    client_cert_source_for_mtls=None,
-                    quota_project_id=None,
-                    client_info=transports.base.DEFAULT_CLIENT_INFO,
-                    always_use_jwt_access=True,
-                    api_audience=None,
-                    metrics_interceptor=mock.ANY,
-                )
-
-
-@pytest.mark.parametrize("client_class", [SpannerClient, SpannerAsyncClient])
-@mock.patch.object(
-    SpannerClient, "DEFAULT_ENDPOINT", modify_default_endpoint(SpannerClient)
-)
-@mock.patch.object(
-    SpannerAsyncClient, "DEFAULT_ENDPOINT", modify_default_endpoint(SpannerAsyncClient)
-)
-def test_spanner_client_get_mtls_endpoint_and_cert_source(client_class):
-    mock_client_cert_source = mock.Mock()
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "true".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        mock_api_endpoint = "foo"
-        options = client_options.ClientOptions(
-            client_cert_source=mock_client_cert_source, api_endpoint=mock_api_endpoint
-        )
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-            options
-        )
-        assert api_endpoint == mock_api_endpoint
-        assert cert_source == mock_client_cert_source
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "false".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "false"}):
-        mock_client_cert_source = mock.Mock()
-        mock_api_endpoint = "foo"
-        options = client_options.ClientOptions(
-            client_cert_source=mock_client_cert_source, api_endpoint=mock_api_endpoint
-        )
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-            options
-        )
-        assert api_endpoint == mock_api_endpoint
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_CLIENT_CERTIFICATE is "Unsupported".
-    with mock.patch.dict(
-        os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "Unsupported"}
-    ):
-        if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-            mock_client_cert_source = mock.Mock()
-            mock_api_endpoint = "foo"
-            options = client_options.ClientOptions(
-                client_cert_source=mock_client_cert_source,
-                api_endpoint=mock_api_endpoint,
-            )
-            api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source(
-                options
-            )
-            assert api_endpoint == mock_api_endpoint
-            assert cert_source is None
-
-    # Test cases for mTLS enablement when GOOGLE_API_USE_CLIENT_CERTIFICATE is unset.
-    test_cases = [
-        (
-            # With workloads present in config, mTLS is enabled.
-            {
-                "version": 1,
-                "cert_configs": {
-                    "workload": {
-                        "cert_path": "path/to/cert/file",
-                        "key_path": "path/to/key/file",
-                    }
-                },
-            },
-            mock_client_cert_source,
-        ),
-        (
-            # With workloads not present in config, mTLS is disabled.
-            {
-                "version": 1,
-                "cert_configs": {},
-            },
-            None,
-        ),
-    ]
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        for config_data, expected_cert_source in test_cases:
-            env = os.environ.copy()
-            env.pop("GOOGLE_API_USE_CLIENT_CERTIFICATE", None)
-            with mock.patch.dict(os.environ, env, clear=True):
-                config_filename = "mock_certificate_config.json"
-                config_file_content = json.dumps(config_data)
-                m = mock.mock_open(read_data=config_file_content)
-                with mock.patch("builtins.open", m):
-                    with mock.patch.dict(
-                        os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": config_filename}
-                    ):
-                        mock_api_endpoint = "foo"
-                        options = client_options.ClientOptions(
-                            client_cert_source=mock_client_cert_source,
-                            api_endpoint=mock_api_endpoint,
-                        )
-                        (
-                            api_endpoint,
-                            cert_source,
-                        ) = client_class.get_mtls_endpoint_and_cert_source(options)
-                        assert api_endpoint == mock_api_endpoint
-                        assert cert_source is expected_cert_source
-
-    # Test cases for mTLS enablement when GOOGLE_API_USE_CLIENT_CERTIFICATE is unset(empty).
-    test_cases = [
-        (
-            # With workloads present in config, mTLS is enabled.
-            {
-                "version": 1,
-                "cert_configs": {
-                    "workload": {
-                        "cert_path": "path/to/cert/file",
-                        "key_path": "path/to/key/file",
-                    }
-                },
-            },
-            mock_client_cert_source,
-        ),
-        (
-            # With workloads not present in config, mTLS is disabled.
-            {
-                "version": 1,
-                "cert_configs": {},
-            },
-            None,
-        ),
-    ]
-    if hasattr(google.auth.transport.mtls, "should_use_client_cert"):
-        for config_data, expected_cert_source in test_cases:
-            env = os.environ.copy()
-            env.pop("GOOGLE_API_USE_CLIENT_CERTIFICATE", "")
-            with mock.patch.dict(os.environ, env, clear=True):
-                config_filename = "mock_certificate_config.json"
-                config_file_content = json.dumps(config_data)
-                m = mock.mock_open(read_data=config_file_content)
-                with mock.patch("builtins.open", m):
-                    with mock.patch.dict(
-                        os.environ, {"GOOGLE_API_CERTIFICATE_CONFIG": config_filename}
-                    ):
-                        mock_api_endpoint = "foo"
-                        options = client_options.ClientOptions(
-                            client_cert_source=mock_client_cert_source,
-                            api_endpoint=mock_api_endpoint,
-                        )
-                        (
-                            api_endpoint,
-                            cert_source,
-                        ) = client_class.get_mtls_endpoint_and_cert_source(options)
-                        assert api_endpoint == mock_api_endpoint
-                        assert cert_source is expected_cert_source
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "never".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-        assert api_endpoint == client_class.DEFAULT_ENDPOINT
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "always".
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-        assert api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-        assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "auto" and default cert doesn't exist.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.mtls.has_default_client_cert_source",
-            return_value=False,
-        ):
-            api_endpoint, cert_source = client_class.get_mtls_endpoint_and_cert_source()
-            assert api_endpoint == client_class.DEFAULT_ENDPOINT
-            assert cert_source is None
-
-    # Test the case GOOGLE_API_USE_MTLS_ENDPOINT is "auto" and default cert exists.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.mtls.has_default_client_cert_source",
-            return_value=True,
-        ):
-            with mock.patch(
-                "google.auth.transport.mtls.default_client_cert_source",
-                return_value=mock_client_cert_source,
-            ):
-                (
-                    api_endpoint,
-                    cert_source,
-                ) = client_class.get_mtls_endpoint_and_cert_source()
-                assert api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-                assert cert_source == mock_client_cert_source
-
-    # Check the case api_endpoint is not provided and GOOGLE_API_USE_MTLS_ENDPOINT has
-    # unsupported value.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "Unsupported"}):
-        with pytest.raises(MutualTLSChannelError) as excinfo:
-            client_class.get_mtls_endpoint_and_cert_source()
-
-        assert (
-            str(excinfo.value)
-            == "Environment variable `GOOGLE_API_USE_MTLS_ENDPOINT` must be `never`, `auto` or `always`"
-        )
-
-
-@pytest.mark.parametrize("client_class", [SpannerClient, SpannerAsyncClient])
-@mock.patch.object(
-    SpannerClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerClient),
-)
-@mock.patch.object(
-    SpannerAsyncClient,
-    "_DEFAULT_ENDPOINT_TEMPLATE",
-    modify_default_endpoint_template(SpannerAsyncClient),
-)
-def test_spanner_client_client_api_endpoint(client_class):
-    mock_client_cert_source = client_cert_source_callback
-    api_override = "foo.com"
-    default_universe = SpannerClient._DEFAULT_UNIVERSE
-    default_endpoint = SpannerClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=default_universe
-    )
-    mock_universe = "bar.com"
-    mock_endpoint = SpannerClient._DEFAULT_ENDPOINT_TEMPLATE.format(
-        UNIVERSE_DOMAIN=mock_universe
-    )
-
-    # If ClientOptions.api_endpoint is set and GOOGLE_API_USE_CLIENT_CERTIFICATE="true",
-    # use ClientOptions.api_endpoint as the api endpoint regardless.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_CLIENT_CERTIFICATE": "true"}):
-        with mock.patch(
-            "google.auth.transport.requests.AuthorizedSession.configure_mtls_channel"
-        ):
-            options = client_options.ClientOptions(
-                client_cert_source=mock_client_cert_source, api_endpoint=api_override
-            )
-            client = client_class(
-                client_options=options,
-                credentials=ga_credentials.AnonymousCredentials(),
-            )
-            assert client.api_endpoint == api_override
-
-    # If ClientOptions.api_endpoint is not set and GOOGLE_API_USE_MTLS_ENDPOINT="never",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with GDU as the api endpoint.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        client = client_class(credentials=ga_credentials.AnonymousCredentials())
-        assert client.api_endpoint == default_endpoint
-
-    # If ClientOptions.api_endpoint is not set and GOOGLE_API_USE_MTLS_ENDPOINT="always",
-    # use the DEFAULT_MTLS_ENDPOINT as the api endpoint.
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "always"}):
-        client = client_class(credentials=ga_credentials.AnonymousCredentials())
-        assert client.api_endpoint == client_class.DEFAULT_MTLS_ENDPOINT
-
-    # If ClientOptions.api_endpoint is not set, GOOGLE_API_USE_MTLS_ENDPOINT="auto" (default),
-    # GOOGLE_API_USE_CLIENT_CERTIFICATE="false" (default), default cert source doesn't exist,
-    # and ClientOptions.universe_domain="bar.com",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with universe domain as the api endpoint.
-    options = client_options.ClientOptions()
-    universe_exists = hasattr(options, "universe_domain")
-    if universe_exists:
-        options = client_options.ClientOptions(universe_domain=mock_universe)
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-    else:
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-    assert client.api_endpoint == (
-        mock_endpoint if universe_exists else default_endpoint
-    )
-    assert client.universe_domain == (
-        mock_universe if universe_exists else default_universe
-    )
-
-    # If ClientOptions does not have a universe domain attribute and GOOGLE_API_USE_MTLS_ENDPOINT="never",
-    # use the _DEFAULT_ENDPOINT_TEMPLATE populated with GDU as the api endpoint.
-    options = client_options.ClientOptions()
-    if hasattr(options, "universe_domain"):
-        delattr(options, "universe_domain")
-    with mock.patch.dict(os.environ, {"GOOGLE_API_USE_MTLS_ENDPOINT": "never"}):
-        client = client_class(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-        assert client.api_endpoint == default_endpoint
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name",
-    [
-        (SpannerClient, transports.SpannerGrpcTransport, "grpc"),
-        (SpannerAsyncClient, transports.SpannerGrpcAsyncIOTransport, "grpc_asyncio"),
-        (SpannerClient, transports.SpannerRestTransport, "rest"),
-    ],
-)
-def test_spanner_client_client_options_scopes(
-    client_class, transport_class, transport_name
-):
-    # Check the case scopes are provided.
-    options = client_options.ClientOptions(
-        scopes=["1", "2"],
-    )
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=["1", "2"],
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-            metrics_interceptor=mock.ANY,
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,grpc_helpers",
-    [
-        (SpannerClient, transports.SpannerGrpcTransport, "grpc", grpc_helpers),
-        (
-            SpannerAsyncClient,
-            transports.SpannerGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            grpc_helpers_async,
-        ),
-        (SpannerClient, transports.SpannerRestTransport, "rest", None),
-    ],
-)
-def test_spanner_client_client_options_credentials_file(
-    client_class, transport_class, transport_name, grpc_helpers
-):
-    # Check the case credentials file is provided.
-    options = client_options.ClientOptions(credentials_file="credentials.json")
-
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file="credentials.json",
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-            metrics_interceptor=mock.ANY,
-        )
-
-
-def test_spanner_client_client_options_from_dict():
-    with mock.patch(
-        "google.cloud.spanner_v1.services.spanner.transports.SpannerGrpcTransport.__init__"
-    ) as grpc_transport:
-        grpc_transport.return_value = None
-        client = SpannerClient(client_options={"api_endpoint": "squid.clam.whelk"})
-        grpc_transport.assert_called_once_with(
-            credentials=None,
-            credentials_file=None,
-            host="squid.clam.whelk",
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-            metrics_interceptor=mock.ANY,
-        )
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class,transport_name,grpc_helpers",
-    [
-        (SpannerClient, transports.SpannerGrpcTransport, "grpc", grpc_helpers),
-        (
-            SpannerAsyncClient,
-            transports.SpannerGrpcAsyncIOTransport,
-            "grpc_asyncio",
-            grpc_helpers_async,
-        ),
-    ],
-)
-def test_spanner_client_create_channel_credentials_file(
-    client_class, transport_class, transport_name, grpc_helpers
-):
-    # Check the case credentials file is provided.
-    options = client_options.ClientOptions(credentials_file="credentials.json")
-
-    with mock.patch.object(transport_class, "__init__") as patched:
-        patched.return_value = None
-        client = client_class(client_options=options, transport=transport_name)
-        patched.assert_called_once_with(
-            credentials=None,
-            credentials_file="credentials.json",
-            host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-            ),
-            scopes=None,
-            client_cert_source_for_mtls=None,
-            quota_project_id=None,
-            client_info=transports.base.DEFAULT_CLIENT_INFO,
-            always_use_jwt_access=True,
-            api_audience=None,
-            metrics_interceptor=mock.ANY,
-        )
-
-    # test that the credentials from file are saved and used as the credentials.
-    with mock.patch.object(
-        google.auth, "load_credentials_from_file", autospec=True
-    ) as load_creds, mock.patch.object(
-        google.auth, "default", autospec=True
-    ) as adc, mock.patch.object(
-        grpc_helpers, "create_channel"
-    ) as create_channel:
-        creds = ga_credentials.AnonymousCredentials()
-        file_creds = ga_credentials.AnonymousCredentials()
-        load_creds.return_value = (file_creds, None)
-        adc.return_value = (creds, None)
-        client = client_class(client_options=options, transport=transport_name)
-        create_channel.assert_called_with(
-            "spanner.googleapis.com:443",
-            credentials=file_creds,
-            credentials_file=None,
-            quota_project_id=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.data",
-            ),
-            scopes=None,
-            default_host="spanner.googleapis.com",
-            ssl_credentials=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.CreateSessionRequest,
-        dict,
-    ],
-)
-def test_create_session(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.Session(
-            name="name_value",
-            creator_role="creator_role_value",
-            multiplexed=True,
-        )
-        response = client.create_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.CreateSessionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.Session)
-    assert response.name == "name_value"
-    assert response.creator_role == "creator_role_value"
-    assert response.multiplexed is True
-
-
-def test_create_session_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.CreateSessionRequest(
-        database="database_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.create_session(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.CreateSessionRequest(
-            database="database_value",
-        )
-
-
-def test_create_session_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_session in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_session] = mock_rpc
-        request = {}
-        client.create_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.create_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_session_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.create_session
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.create_session
-        ] = mock_rpc
-
-        request = {}
-        await client.create_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.create_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_create_session_async(
-    transport: str = "grpc_asyncio", request_type=spanner.CreateSessionRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.Session(
-                name="name_value",
-                creator_role="creator_role_value",
-                multiplexed=True,
-            )
-        )
-        response = await client.create_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.CreateSessionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.Session)
-    assert response.name == "name_value"
-    assert response.creator_role == "creator_role_value"
-    assert response.multiplexed is True
-
-
-@pytest.mark.asyncio
-async def test_create_session_async_from_dict():
-    await test_create_session_async(request_type=dict)
-
-
-def test_create_session_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.CreateSessionRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        call.return_value = spanner.Session()
-        client.create_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_create_session_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.CreateSessionRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(spanner.Session())
-        await client.create_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-def test_create_session_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.Session()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.create_session(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-def test_create_session_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_session(
-            spanner.CreateSessionRequest(),
-            database="database_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_create_session_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.Session()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(spanner.Session())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.create_session(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_create_session_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.create_session(
-            spanner.CreateSessionRequest(),
-            database="database_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.BatchCreateSessionsRequest,
-        dict,
-    ],
-)
-def test_batch_create_sessions(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.BatchCreateSessionsResponse()
-        response = client.batch_create_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.BatchCreateSessionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.BatchCreateSessionsResponse)
-
-
-def test_batch_create_sessions_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.BatchCreateSessionsRequest(
-        database="database_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.batch_create_sessions(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.BatchCreateSessionsRequest(
-            database="database_value",
-        )
-
-
-def test_batch_create_sessions_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.batch_create_sessions
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.batch_create_sessions
-        ] = mock_rpc
-        request = {}
-        client.batch_create_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.batch_create_sessions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_batch_create_sessions_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.batch_create_sessions
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.batch_create_sessions
-        ] = mock_rpc
-
-        request = {}
-        await client.batch_create_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.batch_create_sessions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_batch_create_sessions_async(
-    transport: str = "grpc_asyncio", request_type=spanner.BatchCreateSessionsRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.BatchCreateSessionsResponse()
-        )
-        response = await client.batch_create_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.BatchCreateSessionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.BatchCreateSessionsResponse)
-
-
-@pytest.mark.asyncio
-async def test_batch_create_sessions_async_from_dict():
-    await test_batch_create_sessions_async(request_type=dict)
-
-
-def test_batch_create_sessions_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.BatchCreateSessionsRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        call.return_value = spanner.BatchCreateSessionsResponse()
-        client.batch_create_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_batch_create_sessions_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.BatchCreateSessionsRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.BatchCreateSessionsResponse()
-        )
-        await client.batch_create_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-def test_batch_create_sessions_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.BatchCreateSessionsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.batch_create_sessions(
-            database="database_value",
-            session_count=1420,
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].session_count
-        mock_val = 1420
-        assert arg == mock_val
-
-
-def test_batch_create_sessions_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.batch_create_sessions(
-            spanner.BatchCreateSessionsRequest(),
-            database="database_value",
-            session_count=1420,
-        )
-
-
-@pytest.mark.asyncio
-async def test_batch_create_sessions_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.BatchCreateSessionsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.BatchCreateSessionsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.batch_create_sessions(
-            database="database_value",
-            session_count=1420,
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-        arg = args[0].session_count
-        mock_val = 1420
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_batch_create_sessions_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.batch_create_sessions(
-            spanner.BatchCreateSessionsRequest(),
-            database="database_value",
-            session_count=1420,
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.GetSessionRequest,
-        dict,
-    ],
-)
-def test_get_session(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.Session(
-            name="name_value",
-            creator_role="creator_role_value",
-            multiplexed=True,
-        )
-        response = client.get_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.GetSessionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.Session)
-    assert response.name == "name_value"
-    assert response.creator_role == "creator_role_value"
-    assert response.multiplexed is True
-
-
-def test_get_session_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.GetSessionRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.get_session(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.GetSessionRequest(
-            name="name_value",
-        )
-
-
-def test_get_session_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_session in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_session] = mock_rpc
-        request = {}
-        client.get_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_session_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.get_session
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.get_session
-        ] = mock_rpc
-
-        request = {}
-        await client.get_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.get_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_get_session_async(
-    transport: str = "grpc_asyncio", request_type=spanner.GetSessionRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.Session(
-                name="name_value",
-                creator_role="creator_role_value",
-                multiplexed=True,
-            )
-        )
-        response = await client.get_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.GetSessionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.Session)
-    assert response.name == "name_value"
-    assert response.creator_role == "creator_role_value"
-    assert response.multiplexed is True
-
-
-@pytest.mark.asyncio
-async def test_get_session_async_from_dict():
-    await test_get_session_async(request_type=dict)
-
-
-def test_get_session_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.GetSessionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        call.return_value = spanner.Session()
-        client.get_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_get_session_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.GetSessionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(spanner.Session())
-        await client.get_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_get_session_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.Session()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.get_session(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_get_session_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_session(
-            spanner.GetSessionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_get_session_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.Session()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(spanner.Session())
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.get_session(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_get_session_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.get_session(
-            spanner.GetSessionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ListSessionsRequest,
-        dict,
-    ],
-)
-def test_list_sessions(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.ListSessionsResponse(
-            next_page_token="next_page_token_value",
-        )
-        response = client.list_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ListSessionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListSessionsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-def test_list_sessions_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.ListSessionsRequest(
-        database="database_value",
-        page_token="page_token_value",
-        filter="filter_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.list_sessions(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.ListSessionsRequest(
-            database="database_value",
-            page_token="page_token_value",
-            filter="filter_value",
-        )
-
-
-def test_list_sessions_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_sessions in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_sessions] = mock_rpc
-        request = {}
-        client.list_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_sessions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.list_sessions
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.list_sessions
-        ] = mock_rpc
-
-        request = {}
-        await client.list_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.list_sessions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_async(
-    transport: str = "grpc_asyncio", request_type=spanner.ListSessionsRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.ListSessionsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        response = await client.list_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ListSessionsRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListSessionsAsyncPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_async_from_dict():
-    await test_list_sessions_async(request_type=dict)
-
-
-def test_list_sessions_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ListSessionsRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        call.return_value = spanner.ListSessionsResponse()
-        client.list_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ListSessionsRequest()
-
-    request.database = "database_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.ListSessionsResponse()
-        )
-        await client.list_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "database=database_value",
-    ) in kw["metadata"]
-
-
-def test_list_sessions_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.ListSessionsResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.list_sessions(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-def test_list_sessions_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_sessions(
-            spanner.ListSessionsRequest(),
-            database="database_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.ListSessionsResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.ListSessionsResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.list_sessions(
-            database="database_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].database
-        mock_val = "database_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.list_sessions(
-            spanner.ListSessionsRequest(),
-            database="database_value",
-        )
-
-
-def test_list_sessions_pager(transport_name: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[],
-                next_page_token="def",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-            ),
-            RuntimeError,
-        )
-
-        expected_metadata = ()
-        retry = retries.Retry()
-        timeout = 5
-        expected_metadata = tuple(expected_metadata) + (
-            gapic_v1.routing_header.to_grpc_metadata((("database", ""),)),
-        )
-        pager = client.list_sessions(request={}, retry=retry, timeout=timeout)
-
-        assert pager._metadata == expected_metadata
-        assert pager._retry == retry
-        assert pager._timeout == timeout
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner.Session) for i in results)
-
-
-def test_list_sessions_pages(transport_name: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport_name,
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[],
-                next_page_token="def",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = list(client.list_sessions(request={}).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_async_pager():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_sessions), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[],
-                next_page_token="def",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-            ),
-            RuntimeError,
-        )
-        async_pager = await client.list_sessions(
-            request={},
-        )
-        assert async_pager.next_page_token == "abc"
-        responses = []
-        async for response in async_pager:  # pragma: no branch
-            responses.append(response)
-
-        assert len(responses) == 6
-        assert all(isinstance(i, spanner.Session) for i in responses)
-
-
-@pytest.mark.asyncio
-async def test_list_sessions_async_pages():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.list_sessions), "__call__", new_callable=mock.AsyncMock
-    ) as call:
-        # Set the response to a series of pages.
-        call.side_effect = (
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[],
-                next_page_token="def",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-            ),
-            RuntimeError,
-        )
-        pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_sessions(request={})
-        ).pages:
-            pages.append(page_)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.DeleteSessionRequest,
-        dict,
-    ],
-)
-def test_delete_session(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.delete_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.DeleteSessionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_delete_session_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.DeleteSessionRequest(
-        name="name_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.delete_session(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.DeleteSessionRequest(
-            name="name_value",
-        )
-
-
-def test_delete_session_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.delete_session in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.delete_session] = mock_rpc
-        request = {}
-        client.delete_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_session_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.delete_session
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.delete_session
-        ] = mock_rpc
-
-        request = {}
-        await client.delete_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.delete_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_delete_session_async(
-    transport: str = "grpc_asyncio", request_type=spanner.DeleteSessionRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.delete_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.DeleteSessionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_delete_session_async_from_dict():
-    await test_delete_session_async(request_type=dict)
-
-
-def test_delete_session_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.DeleteSessionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        call.return_value = None
-        client.delete_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_delete_session_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.DeleteSessionRequest()
-
-    request.name = "name_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "name=name_value",
-    ) in kw["metadata"]
-
-
-def test_delete_session_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.delete_session(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-def test_delete_session_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_session(
-            spanner.DeleteSessionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.asyncio
-async def test_delete_session_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.delete_session(
-            name="name_value",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].name
-        mock_val = "name_value"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_delete_session_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.delete_session(
-            spanner.DeleteSessionRequest(),
-            name="name_value",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ExecuteSqlRequest,
-        dict,
-    ],
-)
-def test_execute_sql(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = result_set.ResultSet()
-        response = client.execute_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ExecuteSqlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.ResultSet)
-
-
-def test_execute_sql_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.ExecuteSqlRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.execute_sql(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.ExecuteSqlRequest(
-            session="session_value",
-            sql="sql_value",
-        )
-
-
-def test_execute_sql_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.execute_sql in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.execute_sql] = mock_rpc
-        request = {}
-        client.execute_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.execute_sql(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_execute_sql_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.execute_sql
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.execute_sql
-        ] = mock_rpc
-
-        request = {}
-        await client.execute_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.execute_sql(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_execute_sql_async(
-    transport: str = "grpc_asyncio", request_type=spanner.ExecuteSqlRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            result_set.ResultSet()
-        )
-        response = await client.execute_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ExecuteSqlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.ResultSet)
-
-
-@pytest.mark.asyncio
-async def test_execute_sql_async_from_dict():
-    await test_execute_sql_async(request_type=dict)
-
-
-def test_execute_sql_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ExecuteSqlRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        call.return_value = result_set.ResultSet()
-        client.execute_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_execute_sql_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ExecuteSqlRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            result_set.ResultSet()
-        )
-        await client.execute_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ExecuteSqlRequest,
-        dict,
-    ],
-)
-def test_execute_streaming_sql(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iter([result_set.PartialResultSet()])
-        response = client.execute_streaming_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ExecuteSqlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    for message in response:
-        assert isinstance(message, result_set.PartialResultSet)
-
-
-def test_execute_streaming_sql_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.ExecuteSqlRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.execute_streaming_sql(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.ExecuteSqlRequest(
-            session="session_value",
-            sql="sql_value",
-        )
-
-
-def test_execute_streaming_sql_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.execute_streaming_sql
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.execute_streaming_sql
-        ] = mock_rpc
-        request = {}
-        client.execute_streaming_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.execute_streaming_sql(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_execute_streaming_sql_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.execute_streaming_sql
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.execute_streaming_sql
-        ] = mock_rpc
-
-        request = {}
-        await client.execute_streaming_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.execute_streaming_sql(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_execute_streaming_sql_async(
-    transport: str = "grpc_asyncio", request_type=spanner.ExecuteSqlRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[result_set.PartialResultSet()]
-        )
-        response = await client.execute_streaming_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ExecuteSqlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    message = await response.read()
-    assert isinstance(message, result_set.PartialResultSet)
-
-
-@pytest.mark.asyncio
-async def test_execute_streaming_sql_async_from_dict():
-    await test_execute_streaming_sql_async(request_type=dict)
-
-
-def test_execute_streaming_sql_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ExecuteSqlRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        call.return_value = iter([result_set.PartialResultSet()])
-        client.execute_streaming_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_execute_streaming_sql_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ExecuteSqlRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[result_set.PartialResultSet()]
-        )
-        await client.execute_streaming_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ExecuteBatchDmlRequest,
-        dict,
-    ],
-)
-def test_execute_batch_dml(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.ExecuteBatchDmlResponse()
-        response = client.execute_batch_dml(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ExecuteBatchDmlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.ExecuteBatchDmlResponse)
-
-
-def test_execute_batch_dml_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.ExecuteBatchDmlRequest(
-        session="session_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.execute_batch_dml(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.ExecuteBatchDmlRequest(
-            session="session_value",
-        )
-
-
-def test_execute_batch_dml_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.execute_batch_dml in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.execute_batch_dml
-        ] = mock_rpc
-        request = {}
-        client.execute_batch_dml(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.execute_batch_dml(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_execute_batch_dml_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.execute_batch_dml
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.execute_batch_dml
-        ] = mock_rpc
-
-        request = {}
-        await client.execute_batch_dml(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.execute_batch_dml(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_execute_batch_dml_async(
-    transport: str = "grpc_asyncio", request_type=spanner.ExecuteBatchDmlRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.ExecuteBatchDmlResponse()
-        )
-        response = await client.execute_batch_dml(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ExecuteBatchDmlRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.ExecuteBatchDmlResponse)
-
-
-@pytest.mark.asyncio
-async def test_execute_batch_dml_async_from_dict():
-    await test_execute_batch_dml_async(request_type=dict)
-
-
-def test_execute_batch_dml_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ExecuteBatchDmlRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        call.return_value = spanner.ExecuteBatchDmlResponse()
-        client.execute_batch_dml(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_execute_batch_dml_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ExecuteBatchDmlRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.ExecuteBatchDmlResponse()
-        )
-        await client.execute_batch_dml(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ReadRequest,
-        dict,
-    ],
-)
-def test_read(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = result_set.ResultSet()
-        response = client.read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ReadRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.ResultSet)
-
-
-def test_read_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.ReadRequest(
-        session="session_value",
-        table="table_value",
-        index="index_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.read(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.ReadRequest(
-            session="session_value",
-            table="table_value",
-            index="index_value",
-        )
-
-
-def test_read_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.read in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.read] = mock_rpc
-        request = {}
-        client.read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_read_async_use_cached_wrapped_rpc(transport: str = "grpc_asyncio"):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.read in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.read
-        ] = mock_rpc
-
-        request = {}
-        await client.read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_read_async(
-    transport: str = "grpc_asyncio", request_type=spanner.ReadRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            result_set.ResultSet()
-        )
-        response = await client.read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ReadRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.ResultSet)
-
-
-@pytest.mark.asyncio
-async def test_read_async_from_dict():
-    await test_read_async(request_type=dict)
-
-
-def test_read_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ReadRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        call.return_value = result_set.ResultSet()
-        client.read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_read_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ReadRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            result_set.ResultSet()
-        )
-        await client.read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ReadRequest,
-        dict,
-    ],
-)
-def test_streaming_read(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iter([result_set.PartialResultSet()])
-        response = client.streaming_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ReadRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    for message in response:
-        assert isinstance(message, result_set.PartialResultSet)
-
-
-def test_streaming_read_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.ReadRequest(
-        session="session_value",
-        table="table_value",
-        index="index_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.streaming_read(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.ReadRequest(
-            session="session_value",
-            table="table_value",
-            index="index_value",
-        )
-
-
-def test_streaming_read_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.streaming_read in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.streaming_read] = mock_rpc
-        request = {}
-        client.streaming_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.streaming_read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_streaming_read_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.streaming_read
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.streaming_read
-        ] = mock_rpc
-
-        request = {}
-        await client.streaming_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.streaming_read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_streaming_read_async(
-    transport: str = "grpc_asyncio", request_type=spanner.ReadRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[result_set.PartialResultSet()]
-        )
-        response = await client.streaming_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.ReadRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    message = await response.read()
-    assert isinstance(message, result_set.PartialResultSet)
-
-
-@pytest.mark.asyncio
-async def test_streaming_read_async_from_dict():
-    await test_streaming_read_async(request_type=dict)
-
-
-def test_streaming_read_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ReadRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        call.return_value = iter([result_set.PartialResultSet()])
-        client.streaming_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_streaming_read_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.ReadRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[result_set.PartialResultSet()]
-        )
-        await client.streaming_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.BeginTransactionRequest,
-        dict,
-    ],
-)
-def test_begin_transaction(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = transaction.Transaction(
-            id=b"id_blob",
-        )
-        response = client.begin_transaction(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.BeginTransactionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, transaction.Transaction)
-    assert response.id == b"id_blob"
-
-
-def test_begin_transaction_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.BeginTransactionRequest(
-        session="session_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.begin_transaction(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.BeginTransactionRequest(
-            session="session_value",
-        )
-
-
-def test_begin_transaction_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.begin_transaction in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.begin_transaction
-        ] = mock_rpc
-        request = {}
-        client.begin_transaction(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.begin_transaction(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_begin_transaction_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.begin_transaction
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.begin_transaction
-        ] = mock_rpc
-
-        request = {}
-        await client.begin_transaction(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.begin_transaction(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_begin_transaction_async(
-    transport: str = "grpc_asyncio", request_type=spanner.BeginTransactionRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            transaction.Transaction(
-                id=b"id_blob",
-            )
-        )
-        response = await client.begin_transaction(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.BeginTransactionRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, transaction.Transaction)
-    assert response.id == b"id_blob"
-
-
-@pytest.mark.asyncio
-async def test_begin_transaction_async_from_dict():
-    await test_begin_transaction_async(request_type=dict)
-
-
-def test_begin_transaction_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.BeginTransactionRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        call.return_value = transaction.Transaction()
-        client.begin_transaction(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_begin_transaction_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.BeginTransactionRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            transaction.Transaction()
-        )
-        await client.begin_transaction(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-def test_begin_transaction_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = transaction.Transaction()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.begin_transaction(
-            session="session_value",
-            options=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].options
-        mock_val = transaction.TransactionOptions(
-            read_write=transaction.TransactionOptions.ReadWrite(
-                read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-            )
-        )
-        assert arg == mock_val
-
-
-def test_begin_transaction_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.begin_transaction(
-            spanner.BeginTransactionRequest(),
-            session="session_value",
-            options=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-
-@pytest.mark.asyncio
-async def test_begin_transaction_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = transaction.Transaction()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            transaction.Transaction()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.begin_transaction(
-            session="session_value",
-            options=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].options
-        mock_val = transaction.TransactionOptions(
-            read_write=transaction.TransactionOptions.ReadWrite(
-                read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-            )
-        )
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_begin_transaction_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.begin_transaction(
-            spanner.BeginTransactionRequest(),
-            session="session_value",
-            options=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.CommitRequest,
-        dict,
-    ],
-)
-def test_commit(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = commit_response.CommitResponse()
-        response = client.commit(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.CommitRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, commit_response.CommitResponse)
-
-
-def test_commit_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.CommitRequest(
-        session="session_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.commit(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.CommitRequest(
-            session="session_value",
-        )
-
-
-def test_commit_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.commit in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.commit] = mock_rpc
-        request = {}
-        client.commit(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.commit(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_commit_async_use_cached_wrapped_rpc(transport: str = "grpc_asyncio"):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.commit
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.commit
-        ] = mock_rpc
-
-        request = {}
-        await client.commit(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.commit(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_commit_async(
-    transport: str = "grpc_asyncio", request_type=spanner.CommitRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            commit_response.CommitResponse()
-        )
-        response = await client.commit(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.CommitRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, commit_response.CommitResponse)
-
-
-@pytest.mark.asyncio
-async def test_commit_async_from_dict():
-    await test_commit_async(request_type=dict)
-
-
-def test_commit_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.CommitRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        call.return_value = commit_response.CommitResponse()
-        client.commit(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_commit_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.CommitRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            commit_response.CommitResponse()
-        )
-        await client.commit(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-def test_commit_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = commit_response.CommitResponse()
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.commit(
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-            mutations=[
-                mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-            ],
-            single_use_transaction=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].mutations
-        mock_val = [
-            mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-        ]
-        assert arg == mock_val
-        assert args[0].single_use_transaction == transaction.TransactionOptions(
-            read_write=transaction.TransactionOptions.ReadWrite(
-                read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-            )
-        )
-
-
-def test_commit_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.commit(
-            spanner.CommitRequest(),
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-            mutations=[
-                mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-            ],
-            single_use_transaction=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-
-@pytest.mark.asyncio
-async def test_commit_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = commit_response.CommitResponse()
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            commit_response.CommitResponse()
-        )
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.commit(
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-            mutations=[
-                mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-            ],
-            single_use_transaction=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].mutations
-        mock_val = [
-            mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-        ]
-        assert arg == mock_val
-        assert args[0].single_use_transaction == transaction.TransactionOptions(
-            read_write=transaction.TransactionOptions.ReadWrite(
-                read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-            )
-        )
-
-
-@pytest.mark.asyncio
-async def test_commit_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.commit(
-            spanner.CommitRequest(),
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-            mutations=[
-                mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-            ],
-            single_use_transaction=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.RollbackRequest,
-        dict,
-    ],
-)
-def test_rollback(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        response = client.rollback(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.RollbackRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-def test_rollback_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.RollbackRequest(
-        session="session_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.rollback(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.RollbackRequest(
-            session="session_value",
-        )
-
-
-def test_rollback_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.rollback in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.rollback] = mock_rpc
-        request = {}
-        client.rollback(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.rollback(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_rollback_async_use_cached_wrapped_rpc(transport: str = "grpc_asyncio"):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.rollback
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.rollback
-        ] = mock_rpc
-
-        request = {}
-        await client.rollback(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.rollback(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_rollback_async(
-    transport: str = "grpc_asyncio", request_type=spanner.RollbackRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        response = await client.rollback(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.RollbackRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.asyncio
-async def test_rollback_async_from_dict():
-    await test_rollback_async(request_type=dict)
-
-
-def test_rollback_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.RollbackRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        call.return_value = None
-        client.rollback(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_rollback_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.RollbackRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.rollback(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-def test_rollback_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.rollback(
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].transaction_id
-        mock_val = b"transaction_id_blob"
-        assert arg == mock_val
-
-
-def test_rollback_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.rollback(
-            spanner.RollbackRequest(),
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-        )
-
-
-@pytest.mark.asyncio
-async def test_rollback_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = None
-
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.rollback(
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].transaction_id
-        mock_val = b"transaction_id_blob"
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_rollback_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.rollback(
-            spanner.RollbackRequest(),
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-        )
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.PartitionQueryRequest,
-        dict,
-    ],
-)
-def test_partition_query(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.PartitionResponse()
-        response = client.partition_query(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.PartitionQueryRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.PartitionResponse)
-
-
-def test_partition_query_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.PartitionQueryRequest(
-        session="session_value",
-        sql="sql_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.partition_query(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.PartitionQueryRequest(
-            session="session_value",
-            sql="sql_value",
-        )
-
-
-def test_partition_query_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.partition_query in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.partition_query] = mock_rpc
-        request = {}
-        client.partition_query(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.partition_query(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_partition_query_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.partition_query
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.partition_query
-        ] = mock_rpc
-
-        request = {}
-        await client.partition_query(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.partition_query(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_partition_query_async(
-    transport: str = "grpc_asyncio", request_type=spanner.PartitionQueryRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.PartitionResponse()
-        )
-        response = await client.partition_query(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.PartitionQueryRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.PartitionResponse)
-
-
-@pytest.mark.asyncio
-async def test_partition_query_async_from_dict():
-    await test_partition_query_async(request_type=dict)
-
-
-def test_partition_query_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.PartitionQueryRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        call.return_value = spanner.PartitionResponse()
-        client.partition_query(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_partition_query_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.PartitionQueryRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.PartitionResponse()
-        )
-        await client.partition_query(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.PartitionReadRequest,
-        dict,
-    ],
-)
-def test_partition_read(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = spanner.PartitionResponse()
-        response = client.partition_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.PartitionReadRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.PartitionResponse)
-
-
-def test_partition_read_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.PartitionReadRequest(
-        session="session_value",
-        table="table_value",
-        index="index_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.partition_read(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.PartitionReadRequest(
-            session="session_value",
-            table="table_value",
-            index="index_value",
-        )
-
-
-def test_partition_read_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.partition_read in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.partition_read] = mock_rpc
-        request = {}
-        client.partition_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.partition_read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_partition_read_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.partition_read
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.partition_read
-        ] = mock_rpc
-
-        request = {}
-        await client.partition_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.partition_read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_partition_read_async(
-    transport: str = "grpc_asyncio", request_type=spanner.PartitionReadRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.PartitionResponse()
-        )
-        response = await client.partition_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.PartitionReadRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.PartitionResponse)
-
-
-@pytest.mark.asyncio
-async def test_partition_read_async_from_dict():
-    await test_partition_read_async(request_type=dict)
-
-
-def test_partition_read_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.PartitionReadRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        call.return_value = spanner.PartitionResponse()
-        client.partition_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_partition_read_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.PartitionReadRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.PartitionResponse()
-        )
-        await client.partition_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.BatchWriteRequest,
-        dict,
-    ],
-)
-def test_batch_write(request_type, transport: str = "grpc"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iter([spanner.BatchWriteResponse()])
-        response = client.batch_write(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        request = spanner.BatchWriteRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    for message in response:
-        assert isinstance(message, spanner.BatchWriteResponse)
-
-
-def test_batch_write_non_empty_request_with_auto_populated_field():
-    # This test is a coverage failsafe to make sure that UUID4 fields are
-    # automatically populated, according to AIP-4235, with non-empty requests.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Populate all string fields in the request which are not UUID4
-    # since we want to check that UUID4 are populated automatically
-    # if they meet the requirements of AIP 4235.
-    request = spanner.BatchWriteRequest(
-        session="session_value",
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        call.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client.batch_write(request=request)
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == spanner.BatchWriteRequest(
-            session="session_value",
-        )
-
-
-def test_batch_write_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="grpc",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.batch_write in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.batch_write] = mock_rpc
-        request = {}
-        client.batch_write(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.batch_write(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_batch_write_async_use_cached_wrapped_rpc(
-    transport: str = "grpc_asyncio",
-):
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method_async.wrap_method") as wrapper_fn:
-        client = SpannerAsyncClient(
-            credentials=async_anonymous_credentials(),
-            transport=transport,
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._client._transport.batch_write
-            in client._client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.AsyncMock()
-        mock_rpc.return_value = mock.Mock()
-        client._client._transport._wrapped_methods[
-            client._client._transport.batch_write
-        ] = mock_rpc
-
-        request = {}
-        await client.batch_write(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        await client.batch_write(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-@pytest.mark.asyncio
-async def test_batch_write_async(
-    transport: str = "grpc_asyncio", request_type=spanner.BatchWriteRequest
-):
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport=transport,
-    )
-
-    # Everything is optional in proto3 as far as the runtime is concerned,
-    # and we are mocking out the actual API, so just send an empty request.
-    request = request_type()
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[spanner.BatchWriteResponse()]
-        )
-        response = await client.batch_write(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        request = spanner.BatchWriteRequest()
-        assert args[0] == request
-
-    # Establish that the response is the type that we expect.
-    message = await response.read()
-    assert isinstance(message, spanner.BatchWriteResponse)
-
-
-@pytest.mark.asyncio
-async def test_batch_write_async_from_dict():
-    await test_batch_write_async(request_type=dict)
-
-
-def test_batch_write_field_headers():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.BatchWriteRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        call.return_value = iter([spanner.BatchWriteResponse()])
-        client.batch_write(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-@pytest.mark.asyncio
-async def test_batch_write_field_headers_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Any value that is part of the HTTP/1.1 URI should be sent as
-    # a field header. Set these to a non-empty value.
-    request = spanner.BatchWriteRequest()
-
-    request.session = "session_value"
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[spanner.BatchWriteResponse()]
-        )
-        await client.batch_write(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        assert args[0] == request
-
-    # Establish that the field header was sent.
-    _, _, kw = call.mock_calls[0]
-    assert (
-        "x-goog-request-params",
-        "session=session_value",
-    ) in kw["metadata"]
-
-
-def test_batch_write_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iter([spanner.BatchWriteResponse()])
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        client.batch_write(
-            session="session_value",
-            mutation_groups=[
-                spanner.BatchWriteRequest.MutationGroup(
-                    mutations=[
-                        mutation.Mutation(
-                            insert=mutation.Mutation.Write(table="table_value")
-                        )
-                    ]
-                )
-            ],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls) == 1
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].mutation_groups
-        mock_val = [
-            spanner.BatchWriteRequest.MutationGroup(
-                mutations=[
-                    mutation.Mutation(
-                        insert=mutation.Mutation.Write(table="table_value")
-                    )
-                ]
-            )
-        ]
-        assert arg == mock_val
-
-
-def test_batch_write_flattened_error():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.batch_write(
-            spanner.BatchWriteRequest(),
-            session="session_value",
-            mutation_groups=[
-                spanner.BatchWriteRequest.MutationGroup(
-                    mutations=[
-                        mutation.Mutation(
-                            insert=mutation.Mutation.Write(table="table_value")
-                        )
-                    ]
-                )
-            ],
-        )
-
-
-@pytest.mark.asyncio
-async def test_batch_write_flattened_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Mock the actual call within the gRPC stub, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = iter([spanner.BatchWriteResponse()])
-
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        # Call the method with a truthy value for each flattened field,
-        # using the keyword arguments to the method.
-        response = await client.batch_write(
-            session="session_value",
-            mutation_groups=[
-                spanner.BatchWriteRequest.MutationGroup(
-                    mutations=[
-                        mutation.Mutation(
-                            insert=mutation.Mutation.Write(table="table_value")
-                        )
-                    ]
-                )
-            ],
-        )
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(call.mock_calls)
-        _, args, _ = call.mock_calls[0]
-        arg = args[0].session
-        mock_val = "session_value"
-        assert arg == mock_val
-        arg = args[0].mutation_groups
-        mock_val = [
-            spanner.BatchWriteRequest.MutationGroup(
-                mutations=[
-                    mutation.Mutation(
-                        insert=mutation.Mutation.Write(table="table_value")
-                    )
-                ]
-            )
-        ]
-        assert arg == mock_val
-
-
-@pytest.mark.asyncio
-async def test_batch_write_flattened_error_async():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        await client.batch_write(
-            spanner.BatchWriteRequest(),
-            session="session_value",
-            mutation_groups=[
-                spanner.BatchWriteRequest.MutationGroup(
-                    mutations=[
-                        mutation.Mutation(
-                            insert=mutation.Mutation.Write(table="table_value")
-                        )
-                    ]
-                )
-            ],
-        )
-
-
-def test_create_session_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.create_session in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.create_session] = mock_rpc
-
-        request = {}
-        client.create_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.create_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_create_session_rest_required_fields(request_type=spanner.CreateSessionRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["database"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_session._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["database"] = "database_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).create_session._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "database" in jsonified_request
-    assert jsonified_request["database"] == "database_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.Session()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.Session.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.create_session(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_create_session_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.create_session._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "database",
-                "session",
-            )
-        )
-    )
-
-
-def test_create_session_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.Session()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database="database_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner.Session.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.create_session(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database=projects/*/instances/*/databases/*}/sessions"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_create_session_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.create_session(
-            spanner.CreateSessionRequest(),
-            database="database_value",
-        )
-
-
-def test_batch_create_sessions_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.batch_create_sessions
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.batch_create_sessions
-        ] = mock_rpc
-
-        request = {}
-        client.batch_create_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.batch_create_sessions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_batch_create_sessions_rest_required_fields(
-    request_type=spanner.BatchCreateSessionsRequest,
-):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["database"] = ""
-    request_init["session_count"] = 0
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).batch_create_sessions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["database"] = "database_value"
-    jsonified_request["sessionCount"] = 1420
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).batch_create_sessions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "database" in jsonified_request
-    assert jsonified_request["database"] == "database_value"
-    assert "sessionCount" in jsonified_request
-    assert jsonified_request["sessionCount"] == 1420
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.BatchCreateSessionsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.BatchCreateSessionsResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.batch_create_sessions(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_batch_create_sessions_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.batch_create_sessions._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "database",
-                "sessionCount",
-            )
-        )
-    )
-
-
-def test_batch_create_sessions_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.BatchCreateSessionsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database="database_value",
-            session_count=1420,
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner.BatchCreateSessionsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.batch_create_sessions(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database=projects/*/instances/*/databases/*}/sessions:batchCreate"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_batch_create_sessions_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.batch_create_sessions(
-            spanner.BatchCreateSessionsRequest(),
-            database="database_value",
-            session_count=1420,
-        )
-
-
-def test_get_session_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.get_session in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.get_session] = mock_rpc
-
-        request = {}
-        client.get_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.get_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_get_session_rest_required_fields(request_type=spanner.GetSessionRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_session._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).get_session._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.Session()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.Session.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.get_session(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_get_session_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.get_session._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_get_session_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.Session()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "name": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner.Session.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.get_session(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/databases/*/sessions/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_get_session_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.get_session(
-            spanner.GetSessionRequest(),
-            name="name_value",
-        )
-
-
-def test_list_sessions_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.list_sessions in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.list_sessions] = mock_rpc
-
-        request = {}
-        client.list_sessions(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.list_sessions(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_list_sessions_rest_required_fields(request_type=spanner.ListSessionsRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["database"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_sessions._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["database"] = "database_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).list_sessions._get_unset_required_fields(jsonified_request)
-    # Check that path parameters and body parameters are not mixing in.
-    assert not set(unset_fields) - set(
-        (
-            "filter",
-            "page_size",
-            "page_token",
-        )
-    )
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "database" in jsonified_request
-    assert jsonified_request["database"] == "database_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.ListSessionsResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "get",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.ListSessionsResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.list_sessions(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_list_sessions_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.list_sessions._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(
-            (
-                "filter",
-                "pageSize",
-                "pageToken",
-            )
-        )
-        & set(("database",))
-    )
-
-
-def test_list_sessions_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.ListSessionsResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            database="database_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner.ListSessionsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.list_sessions(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{database=projects/*/instances/*/databases/*}/sessions"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_list_sessions_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.list_sessions(
-            spanner.ListSessionsRequest(),
-            database="database_value",
-        )
-
-
-def test_list_sessions_rest_pager(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # TODO(kbandes): remove this mock unless there's a good reason for it.
-        # with mock.patch.object(path_template, 'transcode') as transcode:
-        # Set the response as a series of pages
-        response = (
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-                next_page_token="abc",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[],
-                next_page_token="def",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                ],
-                next_page_token="ghi",
-            ),
-            spanner.ListSessionsResponse(
-                sessions=[
-                    spanner.Session(),
-                    spanner.Session(),
-                ],
-            ),
-        )
-        # Two responses for two calls
-        response = response + response
-
-        # Wrap the values into proper Response objs
-        response = tuple(spanner.ListSessionsResponse.to_json(x) for x in response)
-        return_values = tuple(Response() for i in response)
-        for return_val, response_val in zip(return_values, response):
-            return_val._content = response_val.encode("UTF-8")
-            return_val.status_code = 200
-        req.side_effect = return_values
-
-        sample_request = {
-            "database": "projects/sample1/instances/sample2/databases/sample3"
-        }
-
-        pager = client.list_sessions(request=sample_request)
-
-        results = list(pager)
-        assert len(results) == 6
-        assert all(isinstance(i, spanner.Session) for i in results)
-
-        pages = list(client.list_sessions(request=sample_request).pages)
-        for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
-            assert page_.raw_page.next_page_token == token
-
-
-def test_delete_session_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.delete_session in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.delete_session] = mock_rpc
-
-        request = {}
-        client.delete_session(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.delete_session(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_delete_session_rest_required_fields(request_type=spanner.DeleteSessionRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["name"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_session._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["name"] = "name_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).delete_session._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "name" in jsonified_request
-    assert jsonified_request["name"] == "name_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "delete",
-                "query_params": pb_request,
-            }
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.delete_session(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_delete_session_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.delete_session._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("name",)))
-
-
-def test_delete_session_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "name": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            name="name_value",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.delete_session(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{name=projects/*/instances/*/databases/*/sessions/*}"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_delete_session_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.delete_session(
-            spanner.DeleteSessionRequest(),
-            name="name_value",
-        )
-
-
-def test_execute_sql_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.execute_sql in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.execute_sql] = mock_rpc
-
-        request = {}
-        client.execute_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.execute_sql(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_execute_sql_rest_required_fields(request_type=spanner.ExecuteSqlRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["sql"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).execute_sql._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["sql"] = "sql_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).execute_sql._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "sql" in jsonified_request
-    assert jsonified_request["sql"] == "sql_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = result_set.ResultSet()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = result_set.ResultSet.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.execute_sql(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_execute_sql_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.execute_sql._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "sql",
-            )
-        )
-    )
-
-
-def test_execute_streaming_sql_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert (
-            client._transport.execute_streaming_sql
-            in client._transport._wrapped_methods
-        )
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.execute_streaming_sql
-        ] = mock_rpc
-
-        request = {}
-        client.execute_streaming_sql(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.execute_streaming_sql(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_execute_streaming_sql_rest_required_fields(
-    request_type=spanner.ExecuteSqlRequest,
-):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["sql"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).execute_streaming_sql._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["sql"] = "sql_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).execute_streaming_sql._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "sql" in jsonified_request
-    assert jsonified_request["sql"] == "sql_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = result_set.PartialResultSet()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = result_set.PartialResultSet.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-            json_return_value = "[{}]".format(json_return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            with mock.patch.object(response_value, "iter_content") as iter_content:
-                iter_content.return_value = iter(json_return_value)
-                response = client.execute_streaming_sql(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_execute_streaming_sql_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.execute_streaming_sql._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "sql",
-            )
-        )
-    )
-
-
-def test_execute_batch_dml_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.execute_batch_dml in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.execute_batch_dml
-        ] = mock_rpc
-
-        request = {}
-        client.execute_batch_dml(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.execute_batch_dml(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_execute_batch_dml_rest_required_fields(
-    request_type=spanner.ExecuteBatchDmlRequest,
-):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["seqno"] = 0
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).execute_batch_dml._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["seqno"] = 550
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).execute_batch_dml._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "seqno" in jsonified_request
-    assert jsonified_request["seqno"] == 550
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.ExecuteBatchDmlResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.ExecuteBatchDmlResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.execute_batch_dml(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_execute_batch_dml_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.execute_batch_dml._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "transaction",
-                "statements",
-                "seqno",
-            )
-        )
-    )
-
-
-def test_read_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.read in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.read] = mock_rpc
-
-        request = {}
-        client.read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_read_rest_required_fields(request_type=spanner.ReadRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["table"] = ""
-    request_init["columns"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).read._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["table"] = "table_value"
-    jsonified_request["columns"] = "columns_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).read._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "table" in jsonified_request
-    assert jsonified_request["table"] == "table_value"
-    assert "columns" in jsonified_request
-    assert jsonified_request["columns"] == "columns_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = result_set.ResultSet()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = result_set.ResultSet.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.read(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_read_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.read._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "table",
-                "columns",
-                "keySet",
-            )
-        )
-    )
-
-
-def test_streaming_read_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.streaming_read in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.streaming_read] = mock_rpc
-
-        request = {}
-        client.streaming_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.streaming_read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_streaming_read_rest_required_fields(request_type=spanner.ReadRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["table"] = ""
-    request_init["columns"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).streaming_read._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["table"] = "table_value"
-    jsonified_request["columns"] = "columns_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).streaming_read._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "table" in jsonified_request
-    assert jsonified_request["table"] == "table_value"
-    assert "columns" in jsonified_request
-    assert jsonified_request["columns"] == "columns_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = result_set.PartialResultSet()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = result_set.PartialResultSet.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-            json_return_value = "[{}]".format(json_return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            with mock.patch.object(response_value, "iter_content") as iter_content:
-                iter_content.return_value = iter(json_return_value)
-                response = client.streaming_read(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_streaming_read_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.streaming_read._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "table",
-                "columns",
-                "keySet",
-            )
-        )
-    )
-
-
-def test_begin_transaction_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.begin_transaction in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[
-            client._transport.begin_transaction
-        ] = mock_rpc
-
-        request = {}
-        client.begin_transaction(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.begin_transaction(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_begin_transaction_rest_required_fields(
-    request_type=spanner.BeginTransactionRequest,
-):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).begin_transaction._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).begin_transaction._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = transaction.Transaction()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = transaction.Transaction.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.begin_transaction(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_begin_transaction_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.begin_transaction._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "options",
-            )
-        )
-    )
-
-
-def test_begin_transaction_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = transaction.Transaction()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            session="session_value",
-            options=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = transaction.Transaction.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.begin_transaction(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{session=projects/*/instances/*/databases/*/sessions/*}:beginTransaction"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_begin_transaction_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.begin_transaction(
-            spanner.BeginTransactionRequest(),
-            session="session_value",
-            options=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-
-def test_commit_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.commit in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.commit] = mock_rpc
-
-        request = {}
-        client.commit(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.commit(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_commit_rest_required_fields(request_type=spanner.CommitRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).commit._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).commit._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = commit_response.CommitResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = commit_response.CommitResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.commit(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_commit_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.commit._get_unset_required_fields({})
-    assert set(unset_fields) == (set(()) & set(("session",)))
-
-
-def test_commit_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = commit_response.CommitResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            session="session_value",
-            mutations=[
-                mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-            ],
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = commit_response.CommitResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.commit(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{session=projects/*/instances/*/databases/*/sessions/*}:commit"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_commit_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.commit(
-            spanner.CommitRequest(),
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-            mutations=[
-                mutation.Mutation(insert=mutation.Mutation.Write(table="table_value"))
-            ],
-            single_use_transaction=transaction.TransactionOptions(
-                read_write=transaction.TransactionOptions.ReadWrite(
-                    read_lock_mode=transaction.TransactionOptions.ReadWrite.ReadLockMode.PESSIMISTIC
-                )
-            ),
-        )
-
-
-def test_rollback_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.rollback in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.rollback] = mock_rpc
-
-        request = {}
-        client.rollback(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.rollback(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_rollback_rest_required_fields(request_type=spanner.RollbackRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["transaction_id"] = b""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).rollback._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["transactionId"] = b"transaction_id_blob"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).rollback._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "transactionId" in jsonified_request
-    assert jsonified_request["transactionId"] == b"transaction_id_blob"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = None
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-            json_return_value = ""
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.rollback(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_rollback_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.rollback._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "transactionId",
-            )
-        )
-    )
-
-
-def test_rollback_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        client.rollback(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{session=projects/*/instances/*/databases/*/sessions/*}:rollback"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_rollback_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.rollback(
-            spanner.RollbackRequest(),
-            session="session_value",
-            transaction_id=b"transaction_id_blob",
-        )
-
-
-def test_partition_query_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.partition_query in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.partition_query] = mock_rpc
-
-        request = {}
-        client.partition_query(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.partition_query(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_partition_query_rest_required_fields(
-    request_type=spanner.PartitionQueryRequest,
-):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["sql"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).partition_query._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["sql"] = "sql_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).partition_query._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "sql" in jsonified_request
-    assert jsonified_request["sql"] == "sql_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.PartitionResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.PartitionResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.partition_query(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_partition_query_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.partition_query._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "sql",
-            )
-        )
-    )
-
-
-def test_partition_read_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.partition_read in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.partition_read] = mock_rpc
-
-        request = {}
-        client.partition_read(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.partition_read(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_partition_read_rest_required_fields(request_type=spanner.PartitionReadRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request_init["table"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).partition_read._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-    jsonified_request["table"] = "table_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).partition_read._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-    assert "table" in jsonified_request
-    assert jsonified_request["table"] == "table_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.PartitionResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.PartitionResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            response = client.partition_read(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_partition_read_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.partition_read._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "table",
-                "keySet",
-            )
-        )
-    )
-
-
-def test_batch_write_rest_use_cached_wrapped_rpc():
-    # Clients should use _prep_wrapped_messages to create cached wrapped rpcs,
-    # instead of constructing them on each call
-    with mock.patch("google.api_core.gapic_v1.method.wrap_method") as wrapper_fn:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport="rest",
-        )
-
-        # Should wrap all calls on client creation
-        assert wrapper_fn.call_count > 0
-        wrapper_fn.reset_mock()
-
-        # Ensure method has been cached
-        assert client._transport.batch_write in client._transport._wrapped_methods
-
-        # Replace cached wrapped function with mock
-        mock_rpc = mock.Mock()
-        mock_rpc.return_value.name = (
-            "foo"  # operation_request.operation in compute client(s) expect a string.
-        )
-        client._transport._wrapped_methods[client._transport.batch_write] = mock_rpc
-
-        request = {}
-        client.batch_write(request)
-
-        # Establish that the underlying gRPC stub method was called.
-        assert mock_rpc.call_count == 1
-
-        client.batch_write(request)
-
-        # Establish that a new wrapper was not created for this call
-        assert wrapper_fn.call_count == 0
-        assert mock_rpc.call_count == 2
-
-
-def test_batch_write_rest_required_fields(request_type=spanner.BatchWriteRequest):
-    transport_class = transports.SpannerRestTransport
-
-    request_init = {}
-    request_init["session"] = ""
-    request = request_type(**request_init)
-    pb_request = request_type.pb(request)
-    jsonified_request = json.loads(
-        json_format.MessageToJson(pb_request, use_integers_for_enums=False)
-    )
-
-    # verify fields with default values are dropped
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).batch_write._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with default values are now present
-
-    jsonified_request["session"] = "session_value"
-
-    unset_fields = transport_class(
-        credentials=ga_credentials.AnonymousCredentials()
-    ).batch_write._get_unset_required_fields(jsonified_request)
-    jsonified_request.update(unset_fields)
-
-    # verify required fields with non-default values are left alone
-    assert "session" in jsonified_request
-    assert jsonified_request["session"] == "session_value"
-
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-    request = request_type(**request_init)
-
-    # Designate an appropriate value for the returned response.
-    return_value = spanner.BatchWriteResponse()
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(Session, "request") as req:
-        # We need to mock transcode() because providing default values
-        # for required fields will fail the real version if the http_options
-        # expect actual values for those fields.
-        with mock.patch.object(path_template, "transcode") as transcode:
-            # A uri without fields and an empty body will force all the
-            # request fields to show up in the query_params.
-            pb_request = request_type.pb(request)
-            transcode_result = {
-                "uri": "v1/sample_method",
-                "method": "post",
-                "query_params": pb_request,
-            }
-            transcode_result["body"] = pb_request
-            transcode.return_value = transcode_result
-
-            response_value = Response()
-            response_value.status_code = 200
-
-            # Convert return value to protobuf type
-            return_value = spanner.BatchWriteResponse.pb(return_value)
-            json_return_value = json_format.MessageToJson(return_value)
-            json_return_value = "[{}]".format(json_return_value)
-
-            response_value._content = json_return_value.encode("UTF-8")
-            req.return_value = response_value
-            req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-            with mock.patch.object(response_value, "iter_content") as iter_content:
-                iter_content.return_value = iter(json_return_value)
-                response = client.batch_write(request)
-
-            expected_params = [("$alt", "json;enum-encoding=int")]
-            actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
-
-
-def test_batch_write_rest_unset_required_fields():
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials
-    )
-
-    unset_fields = transport.batch_write._get_unset_required_fields({})
-    assert set(unset_fields) == (
-        set(())
-        & set(
-            (
-                "session",
-                "mutationGroups",
-            )
-        )
-    )
-
-
-def test_batch_write_rest_flattened():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.BatchWriteResponse()
-
-        # get arguments that satisfy an http rule for this method
-        sample_request = {
-            "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-        }
-
-        # get truthy value for each flattened field
-        mock_args = dict(
-            session="session_value",
-            mutation_groups=[
-                spanner.BatchWriteRequest.MutationGroup(
-                    mutations=[
-                        mutation.Mutation(
-                            insert=mutation.Mutation.Write(table="table_value")
-                        )
-                    ]
-                )
-            ],
-        )
-        mock_args.update(sample_request)
-
-        # Wrap the value into a proper Response obj
-        response_value = Response()
-        response_value.status_code = 200
-        # Convert return value to protobuf type
-        return_value = spanner.BatchWriteResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        json_return_value = "[{}]".format(json_return_value)
-        response_value._content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        with mock.patch.object(response_value, "iter_content") as iter_content:
-            iter_content.return_value = iter(json_return_value)
-            client.batch_write(**mock_args)
-
-        # Establish that the underlying call was made with the expected
-        # request object values.
-        assert len(req.mock_calls) == 1
-        _, args, _ = req.mock_calls[0]
-        assert path_template.validate(
-            "%s/v1/{session=projects/*/instances/*/databases/*/sessions/*}:batchWrite"
-            % client.transport._host,
-            args[1],
-        )
-
-
-def test_batch_write_rest_flattened_error(transport: str = "rest"):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport=transport,
-    )
-
-    # Attempting to call a method with both a request object and flattened
-    # fields is an error.
-    with pytest.raises(ValueError):
-        client.batch_write(
-            spanner.BatchWriteRequest(),
-            session="session_value",
-            mutation_groups=[
-                spanner.BatchWriteRequest.MutationGroup(
-                    mutations=[
-                        mutation.Mutation(
-                            insert=mutation.Mutation.Write(table="table_value")
-                        )
-                    ]
-                )
-            ],
-        )
-
-
-def test_credentials_transport_error():
-    # It is an error to provide credentials and a transport instance.
-    transport = transports.SpannerGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            transport=transport,
-        )
-
-    # It is an error to provide a credentials file and a transport instance.
-    transport = transports.SpannerGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = SpannerClient(
-            client_options={"credentials_file": "credentials.json"},
-            transport=transport,
-        )
-
-    # It is an error to provide an api_key and a transport instance.
-    transport = transports.SpannerGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    options = client_options.ClientOptions()
-    options.api_key = "api_key"
-    with pytest.raises(ValueError):
-        client = SpannerClient(
-            client_options=options,
-            transport=transport,
-        )
-
-    # It is an error to provide an api_key and a credential.
-    options = client_options.ClientOptions()
-    options.api_key = "api_key"
-    with pytest.raises(ValueError):
-        client = SpannerClient(
-            client_options=options, credentials=ga_credentials.AnonymousCredentials()
-        )
-
-    # It is an error to provide scopes and a transport instance.
-    transport = transports.SpannerGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    with pytest.raises(ValueError):
-        client = SpannerClient(
-            client_options={"scopes": ["1", "2"]},
-            transport=transport,
-        )
-
-
-def test_transport_instance():
-    # A client may be instantiated with a custom transport instance.
-    transport = transports.SpannerGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    client = SpannerClient(transport=transport)
-    assert client.transport is transport
-
-
-def test_transport_get_channel():
-    # A client may be instantiated with a custom transport instance.
-    transport = transports.SpannerGrpcTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    channel = transport.grpc_channel
-    assert channel
-
-    transport = transports.SpannerGrpcAsyncIOTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    channel = transport.grpc_channel
-    assert channel
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.SpannerGrpcTransport,
-        transports.SpannerGrpcAsyncIOTransport,
-        transports.SpannerRestTransport,
-    ],
-)
-def test_transport_adc(transport_class):
-    # Test default credentials are used if not provided.
-    with mock.patch.object(google.auth, "default") as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport_class()
-        adc.assert_called_once()
-
-
-def test_transport_kind_grpc():
-    transport = SpannerClient.get_transport_class("grpc")(
-        credentials=ga_credentials.AnonymousCredentials()
-    )
-    assert transport.kind == "grpc"
-
-
-def test_initialize_client_w_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="grpc"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_session_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        call.return_value = spanner.Session()
-        client.create_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.CreateSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_batch_create_sessions_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        call.return_value = spanner.BatchCreateSessionsResponse()
-        client.batch_create_sessions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BatchCreateSessionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_session_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        call.return_value = spanner.Session()
-        client.get_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.GetSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_sessions_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        call.return_value = spanner.ListSessionsResponse()
-        client.list_sessions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ListSessionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_session_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        call.return_value = None
-        client.delete_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.DeleteSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_execute_sql_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        call.return_value = result_set.ResultSet()
-        client.execute_sql(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteSqlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_execute_streaming_sql_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        call.return_value = iter([result_set.PartialResultSet()])
-        client.execute_streaming_sql(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteSqlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_execute_batch_dml_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        call.return_value = spanner.ExecuteBatchDmlResponse()
-        client.execute_batch_dml(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteBatchDmlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_read_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        call.return_value = result_set.ResultSet()
-        client.read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_streaming_read_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        call.return_value = iter([result_set.PartialResultSet()])
-        client.streaming_read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_begin_transaction_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        call.return_value = transaction.Transaction()
-        client.begin_transaction(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BeginTransactionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_commit_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        call.return_value = commit_response.CommitResponse()
-        client.commit(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.CommitRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_rollback_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        call.return_value = None
-        client.rollback(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.RollbackRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_partition_query_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        call.return_value = spanner.PartitionResponse()
-        client.partition_query(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.PartitionQueryRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_partition_read_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        call.return_value = spanner.PartitionResponse()
-        client.partition_read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.PartitionReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_batch_write_empty_call_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="grpc",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        call.return_value = iter([spanner.BatchWriteResponse()])
-        client.batch_write(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BatchWriteRequest()
-
-        assert args[0] == request_msg
-
-
-def test_transport_kind_grpc_asyncio():
-    transport = SpannerAsyncClient.get_transport_class("grpc_asyncio")(
-        credentials=async_anonymous_credentials()
-    )
-    assert transport.kind == "grpc_asyncio"
-
-
-def test_initialize_client_w_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(), transport="grpc_asyncio"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_create_session_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.Session(
-                name="name_value",
-                creator_role="creator_role_value",
-                multiplexed=True,
-            )
-        )
-        await client.create_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.CreateSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_batch_create_sessions_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.BatchCreateSessionsResponse()
-        )
-        await client.batch_create_sessions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BatchCreateSessionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_get_session_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.Session(
-                name="name_value",
-                creator_role="creator_role_value",
-                multiplexed=True,
-            )
-        )
-        await client.get_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.GetSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_list_sessions_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.ListSessionsResponse(
-                next_page_token="next_page_token_value",
-            )
-        )
-        await client.list_sessions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ListSessionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_delete_session_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.delete_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.DeleteSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_execute_sql_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            result_set.ResultSet()
-        )
-        await client.execute_sql(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteSqlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_execute_streaming_sql_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[result_set.PartialResultSet()]
-        )
-        await client.execute_streaming_sql(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteSqlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_execute_batch_dml_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.ExecuteBatchDmlResponse()
-        )
-        await client.execute_batch_dml(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteBatchDmlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_read_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            result_set.ResultSet()
-        )
-        await client.read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_streaming_read_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[result_set.PartialResultSet()]
-        )
-        await client.streaming_read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_begin_transaction_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            transaction.Transaction(
-                id=b"id_blob",
-            )
-        )
-        await client.begin_transaction(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BeginTransactionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_commit_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            commit_response.CommitResponse()
-        )
-        await client.commit(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.CommitRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_rollback_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(None)
-        await client.rollback(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.RollbackRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_partition_query_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.PartitionResponse()
-        )
-        await client.partition_query(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.PartitionQueryRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_partition_read_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(
-            spanner.PartitionResponse()
-        )
-        await client.partition_read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.PartitionReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-@pytest.mark.asyncio
-async def test_batch_write_empty_call_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(),
-        transport="grpc_asyncio",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        # Designate an appropriate return value for the call.
-        call.return_value = mock.Mock(aio.UnaryStreamCall, autospec=True)
-        call.return_value.read = mock.AsyncMock(
-            side_effect=[spanner.BatchWriteResponse()]
-        )
-        await client.batch_write(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BatchWriteRequest()
-
-        assert args[0] == request_msg
-
-
-def test_transport_kind_rest():
-    transport = SpannerClient.get_transport_class("rest")(
-        credentials=ga_credentials.AnonymousCredentials()
-    )
-    assert transport.kind == "rest"
-
-
-def test_create_session_rest_bad_request(request_type=spanner.CreateSessionRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.create_session(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.CreateSessionRequest,
-        dict,
-    ],
-)
-def test_create_session_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.Session(
-            name="name_value",
-            creator_role="creator_role_value",
-            multiplexed=True,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.Session.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.create_session(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.Session)
-    assert response.name == "name_value"
-    assert response.creator_role == "creator_role_value"
-    assert response.multiplexed is True
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_create_session_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_create_session"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_create_session_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_create_session"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.CreateSessionRequest.pb(spanner.CreateSessionRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.Session.to_json(spanner.Session())
-        req.return_value.content = return_value
-
-        request = spanner.CreateSessionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.Session()
-        post_with_metadata.return_value = spanner.Session(), metadata
-
-        client.create_session(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_batch_create_sessions_rest_bad_request(
-    request_type=spanner.BatchCreateSessionsRequest,
-):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.batch_create_sessions(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.BatchCreateSessionsRequest,
-        dict,
-    ],
-)
-def test_batch_create_sessions_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.BatchCreateSessionsResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.BatchCreateSessionsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.batch_create_sessions(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.BatchCreateSessionsResponse)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_batch_create_sessions_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_batch_create_sessions"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_batch_create_sessions_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_batch_create_sessions"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.BatchCreateSessionsRequest.pb(
-            spanner.BatchCreateSessionsRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.BatchCreateSessionsResponse.to_json(
-            spanner.BatchCreateSessionsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner.BatchCreateSessionsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.BatchCreateSessionsResponse()
-        post_with_metadata.return_value = (
-            spanner.BatchCreateSessionsResponse(),
-            metadata,
-        )
-
-        client.batch_create_sessions(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_get_session_rest_bad_request(request_type=spanner.GetSessionRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.get_session(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.GetSessionRequest,
-        dict,
-    ],
-)
-def test_get_session_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.Session(
-            name="name_value",
-            creator_role="creator_role_value",
-            multiplexed=True,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.Session.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.get_session(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.Session)
-    assert response.name == "name_value"
-    assert response.creator_role == "creator_role_value"
-    assert response.multiplexed is True
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_get_session_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_get_session"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_get_session_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_get_session"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.GetSessionRequest.pb(spanner.GetSessionRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.Session.to_json(spanner.Session())
-        req.return_value.content = return_value
-
-        request = spanner.GetSessionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.Session()
-        post_with_metadata.return_value = spanner.Session(), metadata
-
-        client.get_session(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_list_sessions_rest_bad_request(request_type=spanner.ListSessionsRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.list_sessions(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ListSessionsRequest,
-        dict,
-    ],
-)
-def test_list_sessions_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {"database": "projects/sample1/instances/sample2/databases/sample3"}
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.ListSessionsResponse(
-            next_page_token="next_page_token_value",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.ListSessionsResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.list_sessions(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, pagers.ListSessionsPager)
-    assert response.next_page_token == "next_page_token_value"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_list_sessions_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_list_sessions"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_list_sessions_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_list_sessions"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.ListSessionsRequest.pb(spanner.ListSessionsRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.ListSessionsResponse.to_json(
-            spanner.ListSessionsResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner.ListSessionsRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.ListSessionsResponse()
-        post_with_metadata.return_value = spanner.ListSessionsResponse(), metadata
-
-        client.list_sessions(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_delete_session_rest_bad_request(request_type=spanner.DeleteSessionRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.delete_session(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.DeleteSessionRequest,
-        dict,
-    ],
-)
-def test_delete_session_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "name": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.delete_session(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_delete_session_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_delete_session"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = spanner.DeleteSessionRequest.pb(spanner.DeleteSessionRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = spanner.DeleteSessionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.delete_session(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_execute_sql_rest_bad_request(request_type=spanner.ExecuteSqlRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.execute_sql(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ExecuteSqlRequest,
-        dict,
-    ],
-)
-def test_execute_sql_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = result_set.ResultSet()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = result_set.ResultSet.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.execute_sql(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.ResultSet)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_execute_sql_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_execute_sql"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_execute_sql_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_execute_sql"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.ExecuteSqlRequest.pb(spanner.ExecuteSqlRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = result_set.ResultSet.to_json(result_set.ResultSet())
-        req.return_value.content = return_value
-
-        request = spanner.ExecuteSqlRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = result_set.ResultSet()
-        post_with_metadata.return_value = result_set.ResultSet(), metadata
-
-        client.execute_sql(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_execute_streaming_sql_rest_bad_request(request_type=spanner.ExecuteSqlRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.execute_streaming_sql(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ExecuteSqlRequest,
-        dict,
-    ],
-)
-def test_execute_streaming_sql_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = result_set.PartialResultSet(
-            chunked_value=True,
-            resume_token=b"resume_token_blob",
-            last=True,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = result_set.PartialResultSet.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        json_return_value = "[{}]".format(json_return_value)
-        response_value.iter_content = mock.Mock(return_value=iter(json_return_value))
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.execute_streaming_sql(request)
-
-    assert isinstance(response, Iterable)
-    response = next(response)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.PartialResultSet)
-    assert response.chunked_value is True
-    assert response.resume_token == b"resume_token_blob"
-    assert response.last is True
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_execute_streaming_sql_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_execute_streaming_sql"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_execute_streaming_sql_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_execute_streaming_sql"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.ExecuteSqlRequest.pb(spanner.ExecuteSqlRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = result_set.PartialResultSet.to_json(
-            result_set.PartialResultSet()
-        )
-        req.return_value.iter_content = mock.Mock(return_value=iter(return_value))
-
-        request = spanner.ExecuteSqlRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = result_set.PartialResultSet()
-        post_with_metadata.return_value = result_set.PartialResultSet(), metadata
-
-        client.execute_streaming_sql(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_execute_batch_dml_rest_bad_request(
-    request_type=spanner.ExecuteBatchDmlRequest,
-):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.execute_batch_dml(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ExecuteBatchDmlRequest,
-        dict,
-    ],
-)
-def test_execute_batch_dml_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.ExecuteBatchDmlResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.ExecuteBatchDmlResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.execute_batch_dml(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.ExecuteBatchDmlResponse)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_execute_batch_dml_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_execute_batch_dml"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_execute_batch_dml_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_execute_batch_dml"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.ExecuteBatchDmlRequest.pb(spanner.ExecuteBatchDmlRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.ExecuteBatchDmlResponse.to_json(
-            spanner.ExecuteBatchDmlResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner.ExecuteBatchDmlRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.ExecuteBatchDmlResponse()
-        post_with_metadata.return_value = spanner.ExecuteBatchDmlResponse(), metadata
-
-        client.execute_batch_dml(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_read_rest_bad_request(request_type=spanner.ReadRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.read(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ReadRequest,
-        dict,
-    ],
-)
-def test_read_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = result_set.ResultSet()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = result_set.ResultSet.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.read(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.ResultSet)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_read_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_read"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_read_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_read"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.ReadRequest.pb(spanner.ReadRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = result_set.ResultSet.to_json(result_set.ResultSet())
-        req.return_value.content = return_value
-
-        request = spanner.ReadRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = result_set.ResultSet()
-        post_with_metadata.return_value = result_set.ResultSet(), metadata
-
-        client.read(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_streaming_read_rest_bad_request(request_type=spanner.ReadRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.streaming_read(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.ReadRequest,
-        dict,
-    ],
-)
-def test_streaming_read_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = result_set.PartialResultSet(
-            chunked_value=True,
-            resume_token=b"resume_token_blob",
-            last=True,
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = result_set.PartialResultSet.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        json_return_value = "[{}]".format(json_return_value)
-        response_value.iter_content = mock.Mock(return_value=iter(json_return_value))
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.streaming_read(request)
-
-    assert isinstance(response, Iterable)
-    response = next(response)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, result_set.PartialResultSet)
-    assert response.chunked_value is True
-    assert response.resume_token == b"resume_token_blob"
-    assert response.last is True
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_streaming_read_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_streaming_read"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_streaming_read_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_streaming_read"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.ReadRequest.pb(spanner.ReadRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = result_set.PartialResultSet.to_json(
-            result_set.PartialResultSet()
-        )
-        req.return_value.iter_content = mock.Mock(return_value=iter(return_value))
-
-        request = spanner.ReadRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = result_set.PartialResultSet()
-        post_with_metadata.return_value = result_set.PartialResultSet(), metadata
-
-        client.streaming_read(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_begin_transaction_rest_bad_request(
-    request_type=spanner.BeginTransactionRequest,
-):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.begin_transaction(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.BeginTransactionRequest,
-        dict,
-    ],
-)
-def test_begin_transaction_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = transaction.Transaction(
-            id=b"id_blob",
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = transaction.Transaction.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.begin_transaction(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, transaction.Transaction)
-    assert response.id == b"id_blob"
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_begin_transaction_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_begin_transaction"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_begin_transaction_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_begin_transaction"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.BeginTransactionRequest.pb(
-            spanner.BeginTransactionRequest()
-        )
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = transaction.Transaction.to_json(transaction.Transaction())
-        req.return_value.content = return_value
-
-        request = spanner.BeginTransactionRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = transaction.Transaction()
-        post_with_metadata.return_value = transaction.Transaction(), metadata
-
-        client.begin_transaction(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_commit_rest_bad_request(request_type=spanner.CommitRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.commit(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.CommitRequest,
-        dict,
-    ],
-)
-def test_commit_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = commit_response.CommitResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = commit_response.CommitResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.commit(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, commit_response.CommitResponse)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_commit_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_commit"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_commit_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_commit"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.CommitRequest.pb(spanner.CommitRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = commit_response.CommitResponse.to_json(
-            commit_response.CommitResponse()
-        )
-        req.return_value.content = return_value
-
-        request = spanner.CommitRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = commit_response.CommitResponse()
-        post_with_metadata.return_value = commit_response.CommitResponse(), metadata
-
-        client.commit(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_rollback_rest_bad_request(request_type=spanner.RollbackRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.rollback(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.RollbackRequest,
-        dict,
-    ],
-)
-def test_rollback_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = None
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-        json_return_value = ""
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.rollback(request)
-
-    # Establish that the response is the type that we expect.
-    assert response is None
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_rollback_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_rollback"
-    ) as pre:
-        pre.assert_not_called()
-        pb_message = spanner.RollbackRequest.pb(spanner.RollbackRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-
-        request = spanner.RollbackRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-
-        client.rollback(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-
-
-def test_partition_query_rest_bad_request(request_type=spanner.PartitionQueryRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.partition_query(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.PartitionQueryRequest,
-        dict,
-    ],
-)
-def test_partition_query_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.PartitionResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.PartitionResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.partition_query(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.PartitionResponse)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_partition_query_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_partition_query"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_partition_query_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_partition_query"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.PartitionQueryRequest.pb(spanner.PartitionQueryRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.PartitionResponse.to_json(spanner.PartitionResponse())
-        req.return_value.content = return_value
-
-        request = spanner.PartitionQueryRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.PartitionResponse()
-        post_with_metadata.return_value = spanner.PartitionResponse(), metadata
-
-        client.partition_query(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_partition_read_rest_bad_request(request_type=spanner.PartitionReadRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.partition_read(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.PartitionReadRequest,
-        dict,
-    ],
-)
-def test_partition_read_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.PartitionResponse()
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.PartitionResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        response_value.content = json_return_value.encode("UTF-8")
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.partition_read(request)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.PartitionResponse)
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_partition_read_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_partition_read"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_partition_read_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_partition_read"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.PartitionReadRequest.pb(spanner.PartitionReadRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.PartitionResponse.to_json(spanner.PartitionResponse())
-        req.return_value.content = return_value
-
-        request = spanner.PartitionReadRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.PartitionResponse()
-        post_with_metadata.return_value = spanner.PartitionResponse(), metadata
-
-        client.partition_read(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_batch_write_rest_bad_request(request_type=spanner.BatchWriteRequest):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a BadRequest error.
-    with mock.patch.object(Session, "request") as req, pytest.raises(
-        core_exceptions.BadRequest
-    ):
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        json_return_value = ""
-        response_value.json = mock.Mock(return_value={})
-        response_value.status_code = 400
-        response_value.request = mock.Mock()
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        client.batch_write(request)
-
-
-@pytest.mark.parametrize(
-    "request_type",
-    [
-        spanner.BatchWriteRequest,
-        dict,
-    ],
-)
-def test_batch_write_rest_call_success(request_type):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-
-    # send a request that will satisfy transcoding
-    request_init = {
-        "session": "projects/sample1/instances/sample2/databases/sample3/sessions/sample4"
-    }
-    request = request_type(**request_init)
-
-    # Mock the http request call within the method and fake a response.
-    with mock.patch.object(type(client.transport._session), "request") as req:
-        # Designate an appropriate value for the returned response.
-        return_value = spanner.BatchWriteResponse(
-            indexes=[752],
-        )
-
-        # Wrap the value into a proper Response obj
-        response_value = mock.Mock()
-        response_value.status_code = 200
-
-        # Convert return value to protobuf type
-        return_value = spanner.BatchWriteResponse.pb(return_value)
-        json_return_value = json_format.MessageToJson(return_value)
-        json_return_value = "[{}]".format(json_return_value)
-        response_value.iter_content = mock.Mock(return_value=iter(json_return_value))
-        req.return_value = response_value
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        response = client.batch_write(request)
-
-    assert isinstance(response, Iterable)
-    response = next(response)
-
-    # Establish that the response is the type that we expect.
-    assert isinstance(response, spanner.BatchWriteResponse)
-    assert response.indexes == [752]
-
-
-@pytest.mark.parametrize("null_interceptor", [True, False])
-def test_batch_write_rest_interceptors(null_interceptor):
-    transport = transports.SpannerRestTransport(
-        credentials=ga_credentials.AnonymousCredentials(),
-        interceptor=None if null_interceptor else transports.SpannerRestInterceptor(),
-    )
-    client = SpannerClient(transport=transport)
-
-    with mock.patch.object(
-        type(client.transport._session), "request"
-    ) as req, mock.patch.object(
-        path_template, "transcode"
-    ) as transcode, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_batch_write"
-    ) as post, mock.patch.object(
-        transports.SpannerRestInterceptor, "post_batch_write_with_metadata"
-    ) as post_with_metadata, mock.patch.object(
-        transports.SpannerRestInterceptor, "pre_batch_write"
-    ) as pre:
-        pre.assert_not_called()
-        post.assert_not_called()
-        post_with_metadata.assert_not_called()
-        pb_message = spanner.BatchWriteRequest.pb(spanner.BatchWriteRequest())
-        transcode.return_value = {
-            "method": "post",
-            "uri": "my_uri",
-            "body": pb_message,
-            "query_params": pb_message,
-        }
-
-        req.return_value = mock.Mock()
-        req.return_value.status_code = 200
-        req.return_value.headers = {"header-1": "value-1", "header-2": "value-2"}
-        return_value = spanner.BatchWriteResponse.to_json(spanner.BatchWriteResponse())
-        req.return_value.iter_content = mock.Mock(return_value=iter(return_value))
-
-        request = spanner.BatchWriteRequest()
-        metadata = [
-            ("key", "val"),
-            ("cephalopod", "squid"),
-        ]
-        pre.return_value = request, metadata
-        post.return_value = spanner.BatchWriteResponse()
-        post_with_metadata.return_value = spanner.BatchWriteResponse(), metadata
-
-        client.batch_write(
-            request,
-            metadata=[
-                ("key", "val"),
-                ("cephalopod", "squid"),
-            ],
-        )
-
-        pre.assert_called_once()
-        post.assert_called_once()
-        post_with_metadata.assert_called_once()
-
-
-def test_initialize_client_w_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    assert client is not None
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_create_session_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.create_session), "__call__") as call:
-        client.create_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.CreateSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_batch_create_sessions_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.batch_create_sessions), "__call__"
-    ) as call:
-        client.batch_create_sessions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BatchCreateSessionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_get_session_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.get_session), "__call__") as call:
-        client.get_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.GetSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_list_sessions_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.list_sessions), "__call__") as call:
-        client.list_sessions(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ListSessionsRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_delete_session_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.delete_session), "__call__") as call:
-        client.delete_session(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.DeleteSessionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_execute_sql_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.execute_sql), "__call__") as call:
-        client.execute_sql(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteSqlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_execute_streaming_sql_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_streaming_sql), "__call__"
-    ) as call:
-        client.execute_streaming_sql(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteSqlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_execute_batch_dml_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.execute_batch_dml), "__call__"
-    ) as call:
-        client.execute_batch_dml(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ExecuteBatchDmlRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_read_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.read), "__call__") as call:
-        client.read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_streaming_read_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.streaming_read), "__call__") as call:
-        client.streaming_read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.ReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_begin_transaction_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(
-        type(client.transport.begin_transaction), "__call__"
-    ) as call:
-        client.begin_transaction(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BeginTransactionRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_commit_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.commit), "__call__") as call:
-        client.commit(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.CommitRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_rollback_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.rollback), "__call__") as call:
-        client.rollback(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.RollbackRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_partition_query_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.partition_query), "__call__") as call:
-        client.partition_query(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.PartitionQueryRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_partition_read_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.partition_read), "__call__") as call:
-        client.partition_read(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.PartitionReadRequest()
-
-        assert args[0] == request_msg
-
-
-# This test is a coverage failsafe to make sure that totally empty calls,
-# i.e. request == None and no flattened fields passed, work.
-def test_batch_write_empty_call_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        transport="rest",
-    )
-
-    # Mock the actual call, and fake the request.
-    with mock.patch.object(type(client.transport.batch_write), "__call__") as call:
-        client.batch_write(request=None)
-
-        # Establish that the underlying stub method was called.
-        call.assert_called()
-        _, args, _ = call.mock_calls[0]
-        request_msg = spanner.BatchWriteRequest()
-
-        assert args[0] == request_msg
-
-
-def test_transport_grpc_default():
-    # A client should use the gRPC transport by default.
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-    )
-    assert isinstance(
-        client.transport,
-        transports.SpannerGrpcTransport,
-    )
-
-
-def test_spanner_base_transport_error():
-    # Passing both a credentials object and credentials_file should raise an error
-    with pytest.raises(core_exceptions.DuplicateCredentialArgs):
-        transport = transports.SpannerTransport(
-            credentials=ga_credentials.AnonymousCredentials(),
-            credentials_file="credentials.json",
-        )
-
-
-def test_spanner_base_transport():
-    # Instantiate the base transport.
-    with mock.patch(
-        "google.cloud.spanner_v1.services.spanner.transports.SpannerTransport.__init__"
-    ) as Transport:
-        Transport.return_value = None
-        transport = transports.SpannerTransport(
-            credentials=ga_credentials.AnonymousCredentials(),
-        )
-
-    # Every method on the transport should just blindly
-    # raise NotImplementedError.
-    methods = (
-        "create_session",
-        "batch_create_sessions",
-        "get_session",
-        "list_sessions",
-        "delete_session",
-        "execute_sql",
-        "execute_streaming_sql",
-        "execute_batch_dml",
-        "read",
-        "streaming_read",
-        "begin_transaction",
-        "commit",
-        "rollback",
-        "partition_query",
-        "partition_read",
-        "batch_write",
-    )
-    for method in methods:
-        with pytest.raises(NotImplementedError):
-            getattr(transport, method)(request=object())
-
-    with pytest.raises(NotImplementedError):
-        transport.close()
-
-    # Catch all for all remaining methods and properties
-    remainder = [
-        "kind",
-    ]
-    for r in remainder:
-        with pytest.raises(NotImplementedError):
-            getattr(transport, r)()
-
-
-def test_spanner_base_transport_with_credentials_file():
-    # Instantiate the base transport with a credentials file
-    with mock.patch.object(
-        google.auth, "load_credentials_from_file", autospec=True
-    ) as load_creds, mock.patch(
-        "google.cloud.spanner_v1.services.spanner.transports.SpannerTransport._prep_wrapped_messages"
-    ) as Transport:
-        Transport.return_value = None
-        load_creds.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport = transports.SpannerTransport(
-            credentials_file="credentials.json",
-            quota_project_id="octopus",
-        )
-        load_creds.assert_called_once_with(
-            "credentials.json",
-            scopes=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.data",
-            ),
-            quota_project_id="octopus",
-        )
-
-
-def test_spanner_base_transport_with_adc():
-    # Test the default credentials are used if credentials and credentials_file are None.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc, mock.patch(
-        "google.cloud.spanner_v1.services.spanner.transports.SpannerTransport._prep_wrapped_messages"
-    ) as Transport:
-        Transport.return_value = None
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport = transports.SpannerTransport()
-        adc.assert_called_once()
-
-
-def test_spanner_auth_adc():
-    # If no credentials are provided, we should use ADC credentials.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        SpannerClient()
-        adc.assert_called_once_with(
-            scopes=None,
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.data",
-            ),
-            quota_project_id=None,
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.SpannerGrpcTransport,
-        transports.SpannerGrpcAsyncIOTransport,
-    ],
-)
-def test_spanner_transport_auth_adc(transport_class):
-    # If credentials and host are not provided, the transport class should use
-    # ADC credentials.
-    with mock.patch.object(google.auth, "default", autospec=True) as adc:
-        adc.return_value = (ga_credentials.AnonymousCredentials(), None)
-        transport_class(quota_project_id="octopus", scopes=["1", "2"])
-        adc.assert_called_once_with(
-            scopes=["1", "2"],
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.data",
-            ),
-            quota_project_id="octopus",
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [
-        transports.SpannerGrpcTransport,
-        transports.SpannerGrpcAsyncIOTransport,
-        transports.SpannerRestTransport,
-    ],
-)
-def test_spanner_transport_auth_gdch_credentials(transport_class):
-    host = "https://language.com"
-    api_audience_tests = [None, "https://language2.com"]
-    api_audience_expect = [host, "https://language2.com"]
-    for t, e in zip(api_audience_tests, api_audience_expect):
-        with mock.patch.object(google.auth, "default", autospec=True) as adc:
-            gdch_mock = mock.MagicMock()
-            type(gdch_mock).with_gdch_audience = mock.PropertyMock(
-                return_value=gdch_mock
-            )
-            adc.return_value = (gdch_mock, None)
-            transport_class(host=host, api_audience=t)
-            gdch_mock.with_gdch_audience.assert_called_once_with(e)
-
-
-@pytest.mark.parametrize(
-    "transport_class,grpc_helpers",
-    [
-        (transports.SpannerGrpcTransport, grpc_helpers),
-        (transports.SpannerGrpcAsyncIOTransport, grpc_helpers_async),
-    ],
-)
-def test_spanner_transport_create_channel(transport_class, grpc_helpers):
-    # If credentials and host are not provided, the transport class should use
-    # ADC credentials.
-    with mock.patch.object(
-        google.auth, "default", autospec=True
-    ) as adc, mock.patch.object(
-        grpc_helpers, "create_channel", autospec=True
-    ) as create_channel:
-        creds = ga_credentials.AnonymousCredentials()
-        adc.return_value = (creds, None)
-        transport_class(quota_project_id="octopus", scopes=["1", "2"])
-
-        create_channel.assert_called_with(
-            "spanner.googleapis.com:443",
-            credentials=creds,
-            credentials_file=None,
-            quota_project_id="octopus",
-            default_scopes=(
-                "https://www.googleapis.com/auth/cloud-platform",
-                "https://www.googleapis.com/auth/spanner.data",
-            ),
-            scopes=["1", "2"],
-            default_host="spanner.googleapis.com",
-            ssl_credentials=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-
-@pytest.mark.parametrize(
-    "transport_class",
-    [transports.SpannerGrpcTransport, transports.SpannerGrpcAsyncIOTransport],
-)
-def test_spanner_grpc_transport_client_cert_source_for_mtls(transport_class):
-    cred = ga_credentials.AnonymousCredentials()
-
-    # Check ssl_channel_credentials is used if provided.
-    with mock.patch.object(transport_class, "create_channel") as mock_create_channel:
-        mock_ssl_channel_creds = mock.Mock()
-        transport_class(
-            host="squid.clam.whelk",
-            credentials=cred,
-            ssl_channel_credentials=mock_ssl_channel_creds,
-        )
-        mock_create_channel.assert_called_once_with(
-            "squid.clam.whelk:443",
-            credentials=cred,
-            credentials_file=None,
-            scopes=None,
-            ssl_credentials=mock_ssl_channel_creds,
-            quota_project_id=None,
-            options=[
-                ("grpc.max_send_message_length", -1),
-                ("grpc.max_receive_message_length", -1),
-                ("grpc.keepalive_time_ms", 120000),
-            ],
-        )
-
-    # Check if ssl_channel_credentials is not provided, then client_cert_source_for_mtls
-    # is used.
-    with mock.patch.object(transport_class, "create_channel", return_value=mock.Mock()):
-        with mock.patch("grpc.ssl_channel_credentials") as mock_ssl_cred:
-            transport_class(
-                credentials=cred,
-                client_cert_source_for_mtls=client_cert_source_callback,
-            )
-            expected_cert, expected_key = client_cert_source_callback()
-            mock_ssl_cred.assert_called_once_with(
-                certificate_chain=expected_cert, private_key=expected_key
-            )
-
-
-def test_spanner_http_transport_client_cert_source_for_mtls():
-    cred = ga_credentials.AnonymousCredentials()
-    with mock.patch(
-        "google.auth.transport.requests.AuthorizedSession.configure_mtls_channel"
-    ) as mock_configure_mtls_channel:
-        transports.SpannerRestTransport(
-            credentials=cred, client_cert_source_for_mtls=client_cert_source_callback
-        )
-        mock_configure_mtls_channel.assert_called_once_with(client_cert_source_callback)
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "grpc",
-        "grpc_asyncio",
-        "rest",
-    ],
-)
-def test_spanner_host_no_port(transport_name):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        client_options=client_options.ClientOptions(
-            api_endpoint="spanner.googleapis.com"
-        ),
-        transport=transport_name,
-    )
-    assert client.transport._host == (
-        "spanner.googleapis.com:443"
-        if transport_name in ["grpc", "grpc_asyncio"]
-        else "https://spanner.googleapis.com"
-    )
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "grpc",
-        "grpc_asyncio",
-        "rest",
-    ],
-)
-def test_spanner_host_with_port(transport_name):
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(),
-        client_options=client_options.ClientOptions(
-            api_endpoint="spanner.googleapis.com:8000"
-        ),
-        transport=transport_name,
-    )
-    assert client.transport._host == (
-        "spanner.googleapis.com:8000"
-        if transport_name in ["grpc", "grpc_asyncio"]
-        else "https://spanner.googleapis.com:8000"
-    )
-
-
-@pytest.mark.parametrize(
-    "transport_name",
-    [
-        "rest",
-    ],
-)
-def test_spanner_client_transport_session_collision(transport_name):
-    creds1 = ga_credentials.AnonymousCredentials()
-    creds2 = ga_credentials.AnonymousCredentials()
-    client1 = SpannerClient(
-        credentials=creds1,
-        transport=transport_name,
-    )
-    client2 = SpannerClient(
-        credentials=creds2,
-        transport=transport_name,
-    )
-    session1 = client1.transport.create_session._session
-    session2 = client2.transport.create_session._session
-    assert session1 != session2
-    session1 = client1.transport.batch_create_sessions._session
-    session2 = client2.transport.batch_create_sessions._session
-    assert session1 != session2
-    session1 = client1.transport.get_session._session
-    session2 = client2.transport.get_session._session
-    assert session1 != session2
-    session1 = client1.transport.list_sessions._session
-    session2 = client2.transport.list_sessions._session
-    assert session1 != session2
-    session1 = client1.transport.delete_session._session
-    session2 = client2.transport.delete_session._session
-    assert session1 != session2
-    session1 = client1.transport.execute_sql._session
-    session2 = client2.transport.execute_sql._session
-    assert session1 != session2
-    session1 = client1.transport.execute_streaming_sql._session
-    session2 = client2.transport.execute_streaming_sql._session
-    assert session1 != session2
-    session1 = client1.transport.execute_batch_dml._session
-    session2 = client2.transport.execute_batch_dml._session
-    assert session1 != session2
-    session1 = client1.transport.read._session
-    session2 = client2.transport.read._session
-    assert session1 != session2
-    session1 = client1.transport.streaming_read._session
-    session2 = client2.transport.streaming_read._session
-    assert session1 != session2
-    session1 = client1.transport.begin_transaction._session
-    session2 = client2.transport.begin_transaction._session
-    assert session1 != session2
-    session1 = client1.transport.commit._session
-    session2 = client2.transport.commit._session
-    assert session1 != session2
-    session1 = client1.transport.rollback._session
-    session2 = client2.transport.rollback._session
-    assert session1 != session2
-    session1 = client1.transport.partition_query._session
-    session2 = client2.transport.partition_query._session
-    assert session1 != session2
-    session1 = client1.transport.partition_read._session
-    session2 = client2.transport.partition_read._session
-    assert session1 != session2
-    session1 = client1.transport.batch_write._session
-    session2 = client2.transport.batch_write._session
-    assert session1 != session2
-
-
-def test_spanner_grpc_transport_channel():
-    channel = grpc.secure_channel("http://localhost/", grpc.local_channel_credentials())
-
-    # Check that channel is used if provided.
-    transport = transports.SpannerGrpcTransport(
-        host="squid.clam.whelk",
-        channel=channel,
-    )
-    assert transport.grpc_channel == channel
-    assert transport._host == "squid.clam.whelk:443"
-    assert transport._ssl_channel_credentials == None
-
-
-def test_spanner_grpc_asyncio_transport_channel():
-    channel = aio.secure_channel("http://localhost/", grpc.local_channel_credentials())
-
-    # Check that channel is used if provided.
-    transport = transports.SpannerGrpcAsyncIOTransport(
-        host="squid.clam.whelk",
-        channel=channel,
-    )
-    assert transport.grpc_channel == channel
-    assert transport._host == "squid.clam.whelk:443"
-    assert transport._ssl_channel_credentials == None
-
-
-# Remove this test when deprecated arguments (api_mtls_endpoint, client_cert_source) are
-# removed from grpc/grpc_asyncio transport constructor.
-@pytest.mark.filterwarnings("ignore::FutureWarning")
-@pytest.mark.parametrize(
-    "transport_class",
-    [transports.SpannerGrpcTransport, transports.SpannerGrpcAsyncIOTransport],
-)
-def test_spanner_transport_channel_mtls_with_client_cert_source(transport_class):
-    with mock.patch(
-        "grpc.ssl_channel_credentials", autospec=True
-    ) as grpc_ssl_channel_cred:
-        with mock.patch.object(
-            transport_class, "create_channel"
-        ) as grpc_create_channel:
-            mock_ssl_cred = mock.Mock()
-            grpc_ssl_channel_cred.return_value = mock_ssl_cred
-
-            mock_grpc_channel = mock.Mock()
-            grpc_create_channel.return_value = mock_grpc_channel
-
-            cred = ga_credentials.AnonymousCredentials()
-            with pytest.warns(DeprecationWarning):
-                with mock.patch.object(google.auth, "default") as adc:
-                    adc.return_value = (cred, None)
-                    transport = transport_class(
-                        host="squid.clam.whelk",
-                        api_mtls_endpoint="mtls.squid.clam.whelk",
-                        client_cert_source=client_cert_source_callback,
-                    )
-                    adc.assert_called_once()
-
-            grpc_ssl_channel_cred.assert_called_once_with(
-                certificate_chain=b"cert bytes", private_key=b"key bytes"
-            )
-            grpc_create_channel.assert_called_once_with(
-                "mtls.squid.clam.whelk:443",
-                credentials=cred,
-                credentials_file=None,
-                scopes=None,
-                ssl_credentials=mock_ssl_cred,
-                quota_project_id=None,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-            assert transport.grpc_channel == mock_grpc_channel
-            assert transport._ssl_channel_credentials == mock_ssl_cred
-
-
-# Remove this test when deprecated arguments (api_mtls_endpoint, client_cert_source) are
-# removed from grpc/grpc_asyncio transport constructor.
-@pytest.mark.parametrize(
-    "transport_class",
-    [transports.SpannerGrpcTransport, transports.SpannerGrpcAsyncIOTransport],
-)
-def test_spanner_transport_channel_mtls_with_adc(transport_class):
-    mock_ssl_cred = mock.Mock()
-    with mock.patch.multiple(
-        "google.auth.transport.grpc.SslCredentials",
-        __init__=mock.Mock(return_value=None),
-        ssl_credentials=mock.PropertyMock(return_value=mock_ssl_cred),
-    ):
-        with mock.patch.object(
-            transport_class, "create_channel"
-        ) as grpc_create_channel:
-            mock_grpc_channel = mock.Mock()
-            grpc_create_channel.return_value = mock_grpc_channel
-            mock_cred = mock.Mock()
-
-            with pytest.warns(DeprecationWarning):
-                transport = transport_class(
-                    host="squid.clam.whelk",
-                    credentials=mock_cred,
-                    api_mtls_endpoint="mtls.squid.clam.whelk",
-                    client_cert_source=None,
-                )
-
-            grpc_create_channel.assert_called_once_with(
-                "mtls.squid.clam.whelk:443",
-                credentials=mock_cred,
-                credentials_file=None,
-                scopes=None,
-                ssl_credentials=mock_ssl_cred,
-                quota_project_id=None,
-                options=[
-                    ("grpc.max_send_message_length", -1),
-                    ("grpc.max_receive_message_length", -1),
-                    ("grpc.keepalive_time_ms", 120000),
-                ],
-            )
-            assert transport.grpc_channel == mock_grpc_channel
-
-
-def test_database_path():
-    project = "squid"
-    instance = "clam"
-    database = "whelk"
-    expected = "projects/{project}/instances/{instance}/databases/{database}".format(
-        project=project,
-        instance=instance,
-        database=database,
-    )
-    actual = SpannerClient.database_path(project, instance, database)
-    assert expected == actual
-
-
-def test_parse_database_path():
-    expected = {
-        "project": "octopus",
-        "instance": "oyster",
-        "database": "nudibranch",
-    }
-    path = SpannerClient.database_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = SpannerClient.parse_database_path(path)
-    assert expected == actual
-
-
-def test_session_path():
-    project = "cuttlefish"
-    instance = "mussel"
-    database = "winkle"
-    session = "nautilus"
-    expected = "projects/{project}/instances/{instance}/databases/{database}/sessions/{session}".format(
-        project=project,
-        instance=instance,
-        database=database,
-        session=session,
-    )
-    actual = SpannerClient.session_path(project, instance, database, session)
-    assert expected == actual
-
-
-def test_parse_session_path():
-    expected = {
-        "project": "scallop",
-        "instance": "abalone",
-        "database": "squid",
-        "session": "clam",
-    }
-    path = SpannerClient.session_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = SpannerClient.parse_session_path(path)
-    assert expected == actual
-
-
-def test_common_billing_account_path():
-    billing_account = "whelk"
-    expected = "billingAccounts/{billing_account}".format(
-        billing_account=billing_account,
-    )
-    actual = SpannerClient.common_billing_account_path(billing_account)
-    assert expected == actual
-
-
-def test_parse_common_billing_account_path():
-    expected = {
-        "billing_account": "octopus",
-    }
-    path = SpannerClient.common_billing_account_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = SpannerClient.parse_common_billing_account_path(path)
-    assert expected == actual
-
-
-def test_common_folder_path():
-    folder = "oyster"
-    expected = "folders/{folder}".format(
-        folder=folder,
-    )
-    actual = SpannerClient.common_folder_path(folder)
-    assert expected == actual
-
-
-def test_parse_common_folder_path():
-    expected = {
-        "folder": "nudibranch",
-    }
-    path = SpannerClient.common_folder_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = SpannerClient.parse_common_folder_path(path)
-    assert expected == actual
-
-
-def test_common_organization_path():
-    organization = "cuttlefish"
-    expected = "organizations/{organization}".format(
-        organization=organization,
-    )
-    actual = SpannerClient.common_organization_path(organization)
-    assert expected == actual
-
-
-def test_parse_common_organization_path():
-    expected = {
-        "organization": "mussel",
-    }
-    path = SpannerClient.common_organization_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = SpannerClient.parse_common_organization_path(path)
-    assert expected == actual
-
-
-def test_common_project_path():
-    project = "winkle"
-    expected = "projects/{project}".format(
-        project=project,
-    )
-    actual = SpannerClient.common_project_path(project)
-    assert expected == actual
-
-
-def test_parse_common_project_path():
-    expected = {
-        "project": "nautilus",
-    }
-    path = SpannerClient.common_project_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = SpannerClient.parse_common_project_path(path)
-    assert expected == actual
-
-
-def test_common_location_path():
-    project = "scallop"
-    location = "abalone"
-    expected = "projects/{project}/locations/{location}".format(
-        project=project,
-        location=location,
-    )
-    actual = SpannerClient.common_location_path(project, location)
-    assert expected == actual
-
-
-def test_parse_common_location_path():
-    expected = {
-        "project": "squid",
-        "location": "clam",
-    }
-    path = SpannerClient.common_location_path(**expected)
-
-    # Check that the path construction is reversible.
-    actual = SpannerClient.parse_common_location_path(path)
-    assert expected == actual
-
-
-def test_client_with_default_client_info():
-    client_info = gapic_v1.client_info.ClientInfo()
-
-    with mock.patch.object(
-        transports.SpannerTransport, "_prep_wrapped_messages"
-    ) as prep:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(),
-            client_info=client_info,
-        )
-        prep.assert_called_once_with(client_info)
-
-    with mock.patch.object(
-        transports.SpannerTransport, "_prep_wrapped_messages"
-    ) as prep:
-        transport_class = SpannerClient.get_transport_class()
-        transport = transport_class(
-            credentials=ga_credentials.AnonymousCredentials(),
-            client_info=client_info,
-        )
-        prep.assert_called_once_with(client_info)
-
-
-def test_transport_close_grpc():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="grpc"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_grpc_channel")), "close"
-    ) as close:
-        with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-@pytest.mark.asyncio
-async def test_transport_close_grpc_asyncio():
-    client = SpannerAsyncClient(
-        credentials=async_anonymous_credentials(), transport="grpc_asyncio"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_grpc_channel")), "close"
-    ) as close:
-        async with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-def test_transport_close_rest():
-    client = SpannerClient(
-        credentials=ga_credentials.AnonymousCredentials(), transport="rest"
-    )
-    with mock.patch.object(
-        type(getattr(client.transport, "_session")), "close"
-    ) as close:
-        with client:
-            close.assert_not_called()
-        close.assert_called_once()
-
-
-def test_client_ctx():
-    transports = [
-        "rest",
-        "grpc",
-    ]
-    for transport in transports:
-        client = SpannerClient(
-            credentials=ga_credentials.AnonymousCredentials(), transport=transport
-        )
-        # Test client calls underlying transport.
-        with mock.patch.object(type(client.transport), "close") as close:
-            close.assert_not_called()
-            with client:
-                pass
-            close.assert_called()
-
-
-@pytest.mark.parametrize(
-    "client_class,transport_class",
-    [
-        (SpannerClient, transports.SpannerGrpcTransport),
-        (SpannerAsyncClient, transports.SpannerGrpcAsyncIOTransport),
-    ],
-)
-def test_api_key_credentials(client_class, transport_class):
-    with mock.patch.object(
-        google.auth._default, "get_api_key_credentials", create=True
-    ) as get_api_key_credentials:
-        mock_cred = mock.Mock()
-        get_api_key_credentials.return_value = mock_cred
-        options = client_options.ClientOptions()
-        options.api_key = "api_key"
-        with mock.patch.object(transport_class, "__init__") as patched:
-            patched.return_value = None
-            client = client_class(client_options=options)
-            patched.assert_called_once_with(
-                credentials=mock_cred,
-                credentials_file=None,
-                host=client._DEFAULT_ENDPOINT_TEMPLATE.format(
-                    UNIVERSE_DOMAIN=client._DEFAULT_UNIVERSE
-                ),
-                scopes=None,
-                client_cert_source_for_mtls=None,
-                quota_project_id=None,
-                client_info=transports.base.DEFAULT_CLIENT_INFO,
-                always_use_jwt_access=True,
-                api_audience=None,
-                metrics_interceptor=mock.ANY,
-            )