/**
   * Adds the channel-bundles of this <tt>Conference</tt> as
   * <tt>ColibriConferenceIQ.ChannelBundle</tt> instances in <tt>iq</tt>.
   *
   * @param iq the <tt>ColibriConferenceIQ</tt> in which to describe.
   */
  void describeChannelBundles(ColibriConferenceIQ iq) {
    synchronized (transportManagers) {
      for (Map.Entry<String, IceUdpTransportManager> entry : transportManagers.entrySet()) {
        ColibriConferenceIQ.ChannelBundle responseBundleIQ =
            new ColibriConferenceIQ.ChannelBundle(entry.getKey());

        entry.getValue().describe(responseBundleIQ);
        iq.addChannelBundle(responseBundleIQ);
      }
    }
  }