if self.openapi_url:
            assert self.title, "A title must be provided for OpenAPI, e.g.: 'My API'"
            assert self.version, "A version must be provided for OpenAPI, e.g.: '2.1.0'"
        # TODO: remove when discarding the openapi_prefix parameter
        if openapi_prefix:
            logger.warning(
                '"openapi_prefix" has been deprecated in favor of "root_path", which '

) -> Callable[[WebSocket], Coroutine[Any, Any, Any]]:
    async def app(websocket: WebSocket) -> None:
        async with AsyncExitStack() as async_exit_stack:
            # TODO: remove this scope later, after a few releases
            # This scope fastapi_astack is no longer used by FastAPI, kept for
            # compatibility, just in case