@Override
  public final void postSetUp() throws Exception {
    disconnectAllFromDS();
    Wait.pause(5000);
    final Host host = Host.getHost(0);
    server = host.getVM(0);
    client = host.getVM(1);
    server2 = host.getVM(2);
    client2 = host.getVM(3);
  }
This tests the flag setting for region ( DataPolicy as Empty ) for Delta propogation for a client
while registering CQ
geode-cq/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/DeltaToRegionRelationCQRegistrationDUnitTest.java