Function read_content_with 

pub async fn read_content_with<T, B, S>(
    request: &mut Request<B>,
    store: &mut S,
    options: &ReadOptions,
    cancellation: &Cancellation,
) -> Result<Accepted<T, S::Handle>, ReadError<B::Error, S::Error>>
where
    T: ContentHandles<S::Handle>,
    B: ReadableBody,
    S: UploadStore,

Read a request’s content as read_content does, with options.