@Override
  protected void process(ClusterDistributionManager dm) {
    // TODO add code to invoke process notification of agrregator
    // TODO: need to check whether it's a valid implimentation
    AdminDistributedSystemImpl ds = AdminDistributedSystemImpl.getConnectedInstance();

    if (ds instanceof StatAlertsAggregator) {
      StatAlertsAggregator aggregator = (StatAlertsAggregator) ds;

      RemoteGemFireVM remoteVM = dm.getAgent().getMemberById(getSender());

      aggregator.processNotifications(_alerts, remoteVM);
    }
  }
Returns the DataSerializer fixed id for the class that implements this method.
geode-core/src/main/java/org/apache/geode/internal/admin/remote/AlertsNotificationMessage.java