code: private void sendUnpublishedStatus(IPlayItem item) {
          Status unpublished = new Status(StatusCodes.NS_PLAY_UNPUBLISHNOTIFY);
          unpublished.setClientid(streamId);
          unpublished.setDetails(item.getName());
  
          doPushMessage(unpublished);
      }
docs: Send unpublished status notification
  
  @param item
  Playlist item