docs: def update_child_models(self, _, name, info):
          """ This method is always triggered when the state model changes
  
              It keeps the following models/model-lists consistent:
              transition models
              data-flow models
              state models
              scoped variable models
          """
  
          # Update is_start flag in child states if the start state has changed (eventually)
          if info.method_name in ['start_state_id', 'add_transition', 'remove_transition']:
              self.update_child_is_start()
  
          if info.method_name in ["add_transition", "remove_transition", "transitions"]:
              (model_list, data_list, model_name, model_class, model_key) = self._get_model_info("transition")
          elif info.method_name in ["add_data_flow", "remove_data_flow", "data_flows"]:
              (model_list, data_list, model_name, model_class, model_key) = self._get_model_info("data_flow")
          elif info.method_name in ["add_state", "remove_state", "states"]:
              (model_list, data_list, model_name, model_class, model_key) = self._get_model_info("state", info)
          elif info.method_name in ["add_scoped_variable", "remove_scoped_variable", "scoped_variables"]:
              (model_list, data_list, model_name, model_class, model_key) = self._get_model_info("scoped_variable")
          else:
              return
  
          if isinstance(info.result, Exception):
              # Do nothing if the observed function raised an exception
              pass
          elif "add" in info.method_name:
              self.add_missing_model(model_list, data_list, model_name, model_class, model_key)
          elif "remove" in info.method_name:
              destroy = info.kwargs.get('destroy', True)
              recursive = info.kwargs.get('recursive', True)
              self.remove_specific_model(model_list, info.result, model_key, recursive, destroy)
          elif info.method_name in ["transitions", "data_flows", "states", "scoped_variables"]:
              self.re_initiate_model_list(model_list, data_list, model_name, model_class, model_key)