public int onStartCommand(Intent intent, int flags, int startId) {
   Logger.INTERNAL("notificationAvatar", "on start command");
   if (intent != null) {
     PreviewStateHolder stateHolder = PreviewStateHolder.getInstance();
     stateHolder.setPreviewVisiblity(
         intent.getIntExtra(PREVIEW_VISIBILITY, stateHolder.getPreviewVisibility()));
   }
   checkConversations();
   return 2;
 }