/// <summary>
 /// Adds a finished download to the repository.
 /// </summary>
 /// <param name="rssItem">The item to add.</param>
 public void AddFinishedDownload(RssItem rssItem)
 {
     _finishedDownloads.Items.Add(rssItem);
     _finishedDownloadsDataAccess.SaveFinishedDownloads(_finishedDownloads, _filename);
 }