| from typing import TypeVar, Optional, Callable, overload | |
| from . import _ConverterType | |
| _T = TypeVar("_T") | |
| def optional( | |
| converter: _ConverterType[_T] | |
| ) -> _ConverterType[Optional[_T]]: ... | |
| @overload | |
| def default_if_none(default: _T) -> _ConverterType[_T]: ... | |
| @overload | |
| def default_if_none(*, factory: Callable[[], _T]) -> _ConverterType[_T]: ... |