@Override
  protected void process(final ClusterDistributionManager dm) {
    Assert.assertTrue(id != null);
    dm.shutdownMessageReceived(id,
        "shutdown message received");
  }
Removes the distribution manager that is started up from the current DM's list of members.

This method is invoked on the receiver side
geode-core/src/main/java/org/apache/geode/distributed/internal/ShutdownMessage.java