docs: def get_exec_start_kwargs(self, action, container_name, exec_id, kwargs=None):
          """
          Generates keyword arguments for the Docker client to set up the HostConfig or start a container.
  
          :param action: Action configuration.
          :type action: ActionConfig
          :param container_name: Container name or id.
          :type container_name: unicode | str
          :param kwargs: Additional keyword arguments to complement or override the configuration-based values.
          :type kwargs: dict | NoneType
          :param exec_id: Id of the exec instance.
          :type exec_id: long
          :return: Resulting keyword arguments.
          :rtype: dict
          """
          c_kwargs = dict(exec_id=exec_id)
          update_kwargs(c_kwargs, kwargs)
          return c_kwargs