@Override
    public void afterInvalidate(final EntryEvent<String, String> event) {
      super.afterInvalidate(event);
      afterInvalidateInvoked = true;
      String prefix = "";
      if (!event.isOriginRemote()) {
        prefix = "    ";
      }
      logger.info(prefix + "afterInvalidate: {" + event.getOldValue() + " -> " + event.getNewValue()
          + "} at=" + System.currentTimeMillis());
    }
1. Invalidate a non-existent entry from the server. 2. Validate that the servers see after
invalidate. 3. Validate that the subscribed client invokes after invalidate.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/ClientServerForceInvalidateDUnitTest.java