@Override
  public final void preTearDown() throws Exception {
    // close the clients first
    closeCache();
    // then close the servers
    vm0.invoke(EventIDVerificationDUnitTest::closeCache);
    vm1.invoke(EventIDVerificationDUnitTest::closeCache);
  }
Verify that EventId is prapogated to server in case of region clear. 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