docs: def get_state_model_class_for_state(state):
      """Determines the model required for the given state class
  
      :param state: Instance of a state (ExecutionState, BarrierConcurrencyState, ...)
      :return: The model class required for holding such a state instance
      """
      from rafcon.gui.models.state import StateModel
      from rafcon.gui.models.container_state import ContainerStateModel
      from rafcon.gui.models.library_state import LibraryStateModel
      if isinstance(state, ContainerState):
          return ContainerStateModel
      elif isinstance(state, LibraryState):
          return LibraryStateModel
      elif isinstance(state, State):
          return StateModel
      else:
          logger.warning("There is not model for state of type {0} {1}".format(type(state), state))
          return None