public static void destroyRegion() {
    try {
      Region r = cache.getRegion(SEPARATOR + REGION_NAME);
      assertNotNull(r);
      r.destroyRegion();
    } catch (Exception ex) {
      Assert.fail("failed while destroy region ", ex);
    }
  }
Verify that server responds to a higher versioned client.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/BackwardCompatibilityHigherVersionClientDUnitTest.java