Method _memo

lib/sqlalchemy/orm/mapper.py:4057–4062

(self, key: Any, callable_: Callable[[], _T])

        return ret

    def _memo(self, key: Any, callable_: Callable[[], _T]) -> _T:
        if key in self._memoized_values:
            return cast(_T, self._memoized_values[key])
        else:
            self._memoized_values[key] = value = callable_()
            return value

    @util.memoized_property
    def _table_to_equated(self):