[OM(C)SessionABC] small fixes

* comments
* prepare cmd_prefix handling within OMSession
* fix timeout handling

Author: syntron

OMPython/OMCSession.py

@@ -809,12 +809,20 @@ def __init__(
 
         # store variables
         self._timeout = timeout
+        # command prefix (to be used for docker or WSL)
+        self._cmd_prefix: list[str] = []
 
     def __post_init__(self) -> None:
         """
         Post initialisation method.
         """
 
+    def get_cmd_prefix(self) -> list[str]:
+        """
+        Get session definition used for this instance of OMPath.
+        """
+        return self._cmd_prefix.copy()
+
     @staticmethod
     def escape_str(value: str) -> str:
         """
@@ -843,7 +851,7 @@ def set_workdir(self, workdir: OMPathABC) -> None:
     @abc.abstractmethod
     def omcpath(self, *path) -> OMPathABC:
         """
-        Create an OMPathBase object based on the given path segments and the current class.
+        Create an OMPathABC object based on the given path segments and the current class.
         """
 
     @abc.abstractmethod
@@ -907,13 +915,12 @@ def __init__(
         """
         Initialisation for OMCSession
         """
+        super().__init__(timeout=timeout)
 
         # some helper data
         self.model_execution_windows = platform.system() == "Windows"
         self.model_execution_local = False
 
-        # store variables
-        self._timeout = timeout
         # generate a random string for this instance of OMC
         self._random_string = uuid.uuid4().hex
         # get a temporary directory
@@ -990,6 +997,7 @@ def __del__(self):
                     self._omc_process.kill()
                     self._omc_process.wait()
             finally:
+
                 self._omc_process = None
 
     def _timeout_loop(