@Override
  public final void postSetUp() throws Exception {
    final Host host = Host.getHost(0);
    vm0 = host.getVM(0);
    vm1 = host.getVM(1);

    // start servers first
    PORT1 =
        vm0.invoke(EventIDVerificationDUnitTest::createServerCache);
    PORT2 =
        vm1.invoke(EventIDVerificationDUnitTest::createServerCache);

    // vm2.invoke(EventIDVerificationDUnitTest.class, "createClientCache", new
    // Object[] { new Integer(PORT1),new Integer(PORT2)});
    createClientCache(NetworkUtils.getServerHostName(host), PORT1, PORT2);
    CacheObserverHolder.setInstance(new CacheObserverAdapter());
  }
Test to verify EventID generated from Cache Client is correctly passed on to the cache server for
create, update, remove and destroy operations.It also checks that peer nodes also get the same
EventID.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/EventIDVerificationDUnitTest.java