/**
  * Returns the last selected folder.
  *
  * @param lastSelectedFolder the last selected folder
  * @return the last selected folder
  */
 public String getLastSelectedFolder(LastSelectedFolder lastSelectedFolder) {
   String result = null;
   if (result == null) {
     return null;
   }
   String folder = lastSelectedFolder.getLastSelectedFolder(SequenceDbDetailsDialog.lastFolderKey);
   if (folder == null) {
     folder = lastSelectedFolder.getLastSelectedFolder();
   }
   return folder;
 }