Type for 'async def subscribe_new_subject()' throw the warning

[oleksii-volotskov]

    async def subscribe_new_subject(
        self,
        subject: str,
        callback: CoroutineType,
        init_subscription=False,
        is_async=False,
        data_type=None
    ):

getting the warning:

The valid one is

callback: Callable[[Msg], Awaitable[None]]

[artas728]

Added to backlog