def _get_relation_key_linking_models(self) -> Tuple[str, str]:
        """
        Extract names and aliases of relation columns to use
        in linking between own models and parent models

        :return: tuple of name and alias of relation columns
        :rtype: List[Tuple[str, str]]
        """
        column_name = self.relation_field.get_model_relation_fields(False)
        column_alias = self.relation_field.get_model_relation_fields(True)
        return column_name, column_alias

        Extract names and aliases of relation columns to use
        in linking between own models and parent models

        :return: tuple of name and alias of relation columns
        :rtype: List[Tuple[str, str]]
        
ormar/queryset/queries/prefetch_query.py