The DownloadService uses this method to fail transfers, but the UploadService doesn't. Review the code carefully to figure out whether it's like that for a reason, and if not, copy the TryFail() ...

Automated music discovery and download via Telegram bot. Resolves track metadata from Spotify, searches and downloads FLAC files from Soulseek (via slskd), renames them to Artist - Title.flac, and ...