private void manager_AtMaxCapacity(BatchManager manager)
 {
     BatchManager batchManager = new BatchManager(batchSettings);
     batchManager.AtMaxCapacity += manager_AtMaxCapacity;
     batchManager.FileAdded += manager_FileAdded;
     batchManager.Done += manager_Done;
     batchManager.ProcessedFile += manager_ProcessedFile;
     batchManagers.Add(batchManager);
     foreach (Scanner scanner in scanners)
         batchManager.WatchScanner(scanner);
 }