FubarDev.FtpServer.FileSystem.OneDrive.OneDriveFileSystem.UploadFinished C# (CSharp) Method

        internal async Task UploadFinished(string parentId, string name, bool withError)
        {
            BackgroundUpload uploader;
            var id = GetFileId(parentId, name);

            _uploadsLock.Wait();
            try
            {
                uploader = _uploads[id];
                if (withError)
                {
                    _cache.Remove(id);
                }
                else
                {
                    _cache.Set(id, uploader.Item, _defaultCacheTimeSpan);
                }
                _uploads.Remove(id);
            }
            finally
            {
                _uploadsLock.Release();
            }

            if (!withError && uploader.ItemChanges != null)
            {
                var updatedItem = await Service.UpdateAsync(Drive.Id, uploader.Item.Id, uploader.ItemChanges, CancellationToken.None);
                _cache.Set(id, updatedItem, _defaultCacheTimeSpan);
            }
        }

 public async Task Start(CancellationToken cancellationToken)
 {
     using (var stream = await _tempData.OpenAsync())
     {
         bool withError = false;
         try
         {
             Item = await _fileSystem.Service.UploadFileAsync(_fileSystem.Drive.Id, ParentId, Name, stream, cancellationToken);
         }
         catch (OperationCanceledException)
         {
             withError = true;
             if (Item == null)
             {
                 throw new InvalidOperationException("The Item property must be set. The UploadFileAsync function must not return a NULL value.");
             }
             Item.Size = stream.Position;
             throw;
         }
         finally
         {
             _notifiedAsFinished = true;
             await _fileSystem.UploadFinished(ParentId, Name, withError);
         }
     }
 }