Function future_add_done_callback

python/python3/tornado/concurrent.py:236–239

(
    future: "futures.Future[_T]", callback: Callable[["futures.Future[_T]"], None]
)

@typing.overload
def future_add_done_callback(
    future: "futures.Future[_T]", callback: Callable[["futures.Future[_T]"], None]
) -> None:
    pass


@typing.overload  # noqa: F811