Explicitly use the class name that is being deprecated

core/app/models/spree/user_last_url_storer.rb

@@ -26,7 +26,7 @@ def self.rules
     #  or its subclasses. The controller will be passed to each rule for matching.
     def initialize(controller)
       @controller = controller
-      Spree::Deprecation.warn("This class will be removed without replacement on the release of Solidus 4.0")
+      Spree::Deprecation.warn("#{self.class} will be removed without replacement on the release of Solidus 4.0")
     end
 
     # Stores into session[:spree_user_return_to] the request full path for

core/lib/spree/core/controller_helpers/auth.rb

@@ -37,31 +37,20 @@ def current_ability
         end
 
         def redirect_back_or_default(default)
-          Spree::Deprecation.warn <<~MSG
-            'Please use #stored_spree_user_location_or when using solidus_auth_devise.
-            Otherwise, please utilize #redirect_back provided in Rails 5+ or
-            #redirect_back_or_to in Rails 7+ instead'
-          MSG
-
           redirect_to(session["spree_user_return_to"] || default)
           session["spree_user_return_to"] = nil
         end
 
         def set_guest_token
-          unless cookies.signed[:guest_token].present?
-            cookies.permanent.signed[:guest_token] = Spree::Config[:guest_token_cookie_options].merge(
-              value: SecureRandom.urlsafe_base64(nil, false),
-              httponly: true
-            )
-          end
+          return if cookies.signed[:guest_token].present?
+
+          cookies.permanent.signed[:guest_token] = Spree::Config[:guest_token_cookie_options].merge(
+            value: SecureRandom.urlsafe_base64(nil, false),
+            httponly: true
+          )
         end
 
         def store_location
-          Spree::Deprecation.warn <<~MSG
-            store_location is being deprecated in solidus 4.0
-            without replacement
-          MSG
-
           Spree::UserLastUrlStorer.new(self).store_location
         end
 
@@ -83,7 +72,11 @@ def try_spree_current_user
           end
         end
 
-        deprecate try_spree_current_user: :spree_current_user, deprecator: Spree::Deprecation
+        deprecate \
+          try_spree_current_user: :spree_current_user,
+          redirect_back_or_default: 'Please use `redirect_to stored_spree_user_location_or(...)` when using solidus_auth_devise.',
+          store_location: 'Please use `store_location_for(:spree_user, request.fullpath)` when using solidus_auth_devise.',
+          deprecator: Spree::Deprecation
       end
     end
   end