Function complete_upload 

pub fn complete_upload<C, Fut, B, E>(
    client: C,
    params: &Params,
    request: &CompleteUploadRequest,
) -> CompleteUpload<Fut, B, E> 
where
    C: FnOnce(Request<String>) -> Fut,
    Fut: Future<Output = Result<Response<B>, E>>,
    B: Body,

Complete upload