docs: def _parse_multifile(self, desired_type: Type[T], obj: PersistedObject,
                           parsing_plan_for_children: Dict[str, AnyParser._RecursiveParsingPlan],
                           logger: Logger, options: Dict[str, Dict[str, Any]]) -> T:
          """
          Implementation of AnyParser API
          """
          raise Exception('This should never happen, since this parser relies on underlying parsers')