@Test
  public void testConflationCreateUpdateInvalidate() throws Exception {

    server1.invoke(putFromServer(KEY1, VALUE1));
    server1.invoke(putFromServer(KEY1, VALUE2));
    server1.invoke(putFromServer(KEY1, VALUE3));
    server1.invoke(invalidateFromServer(KEY1));
    server1.invoke(putFromServer(LAST_KEY, LAST_VALUE));
    expectedNoEvents = 3;
    client1.invoke(checkNoEvents(expectedNoEvents));

  }
In this test do create , then update, update, invalidate. The client should receive 3
callbacks, one for create one for the last update and one for the invalidate.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/ha/HAConflationDistributedTest.java