Function with_cancellation_handler

pub(crate) async fn with_cancellation_handler<Request, Cancellation, Response>(
    request: Request,
    cancellation: Cancellation,
) -> Result<Response<Response>, Status>
where
    Request: Future<Output = Result<Response<Response>, Status>> + Send + 'static,
    Cancellation: Future<Output = Result<Response<Response>, Status>> + Send + 'static,
    Response: Send + 'static,