docs: def _generate_element_meta_data(self, meta_data):
          """Generate meta data for state elements and add it to the given dictionary
  
          This method retrieves the meta data of the container state elements (data flows, transitions) and adds it
          to the given meta data dictionary.
  
          :param meta_data: Dictionary of meta data
          """
          super(ContainerStateModel, self)._generate_element_meta_data(meta_data)
          for transition_m in self.transitions:
              self._copy_element_meta_data_to_meta_file_data(meta_data, transition_m, "transition",
                                                             transition_m.transition.transition_id)
          for data_flow_m in self.data_flows:
              self._copy_element_meta_data_to_meta_file_data(meta_data, data_flow_m, "data_flow",
                                                             data_flow_m.data_flow.data_flow_id)
          for scoped_variable_m in self.scoped_variables:
              self._copy_element_meta_data_to_meta_file_data(meta_data, scoped_variable_m, "scoped_variable",
                                                             scoped_variable_m.scoped_variable.data_port_id)