@Before
  public void before() throws Exception {
    serverVM = Host.getHost(0).getVM(1);
    client1VM = Host.getHost(0).getVM(2);
    client2VM = Host.getHost(0).getVM(3);
  }
This is for testing client IDs
geode-core/src/distributedTest/java/org/apache/geode/management/internal/pulse/TestClientIdsDUnitTest.java