code: public synchronized void enable() {
          ServiceDiscoveryManager.getInstanceFor(connection()).addFeature(NAMESPACE);
          StanzaFilter filter = new AndFilter(OUTGOING_FILTER, new NotFilter(OUTGOING_FILTER));
          connection().addStanzaInterceptor(ADD_ORIGIN_ID_INTERCEPTOR, filter);
      }
docs: Start appending origin-id elements to outgoing stanzas and add the feature to disco.