docs: def on_add_state_machine_after(self, observable, return_value, args):
          """ This method specifies what happens when a state machine is added to the state machine manager
          :param observable: the state machine manager
          :param return_value: the new state machine
          :param args:
          :return:
          """
          self.logger.info("Execution status observer register new state machine sm_id: {}".format(args[1].state_machine_id))
          self.register_states_of_state_machine(args[1])