@Override
    public void afterProcessMessage(ClusterDistributionManager dm, DistributionMessage message) {
      thName = Thread.currentThread().getName();

      if (message instanceof TombstoneMessage) {
        tsMessageProcessed++;
      }

      if (message instanceof PRTombstoneMessage) {
        prTsMessageProcessed++;
      }
    }
test that distributed GC messages are sent to clients and properly processed

@param replicatedRegion whether to use a RR or PR in the servers
geode-core/src/distributedTest/java/org/apache/geode/cache30/ClientServerCCEDUnitTest.java