@Override
  public void process(ClusterDistributionManager dm) {
    RemoteGfManagerAgent agent = dm.getAgent();
    if (agent != null) {
      RemoteGemFireVM mgr = agent.getMemberById(getSender());
      if (mgr != null) {
        mgr.callStatListeners(timestamp, listenerIds, values);
      }
    }
  }
Notes that the value of a given statistics has changed
geode-core/src/main/java/org/apache/geode/internal/admin/remote/StatListenerMessage.java