pub fn download_single<R: Puller, W: Pusher>(
puller: R,
pusher: W,
options: DownloadOptions,
) -> DownloadResult<TokioExecutor<R, W::Error>, R::Error, W::Error>pub fn download_single<R: Puller, W: Pusher>(
puller: R,
pusher: W,
options: DownloadOptions,
) -> DownloadResult<TokioExecutor<R, W::Error>, R::Error, W::Error>