private static void validateRegionEntriesFromInterestListInVm1() {
    Region r = cache.getRegion(SEPARATOR + REGION_NAME);
    assertNotNull(r);
    Region.Entry k1, k2;
    k1 = r.getEntry("k1");
    k2 = r.getEntry("k2");
    assertNotNull(k1);
    assertNotNull(k2);
    assertEquals(k1.getValue(), "server1");
    assertEquals(k2.getValue(), "server2");
  }
unregister a key for a particular client in the server

@param clientId the client's ID
@param key the key it's no longer interest in
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/InterestListDUnitTest.java