public void onEvent(NoSubscriberEvent event){
  if (event.originalEvent instanceof ModelModifiedMessage) {
    onEvent(new StickyUpdatedMessage());
  }
}

public void onEvent ( NoSubscriberEvent event ) { if ( event . originalEvent instanceof ModelModifiedMessage ) { onEvent ( new StickyUpdatedMessage ( ) ) ; } }
when the activity is not around to catch the modelmodifiedmessage , this callback is called . in this case , a notification should be displayed .
