code: @Override
    public void handleAnnounceResponse(int interval, int complete, int incomplete, String hexInfoHash) {
      final SharedTorrent sharedTorrent = this.torrentsStorage.getTorrent(hexInfoHash);
      if (sharedTorrent != null) {
        sharedTorrent.setSeedersCount(complete);
        sharedTorrent.setLastAnnounceTime(System.currentTimeMillis());
      }
      setAnnounceInterval(interval);
    }
docs: Handle an announce response event.
  
  @param interval   The announce interval requested by the tracker.
  @param complete   The number of seeders on this torrent.
  @param incomplete The number of leechers on this torrent.