@Override
    public void afterInvalidate(EntryEvent event) {
      event.getRegion().getCache().getLogger().warning("ZZZ AFTER UPDATE:" + event.getKey());
      invoked = true;
      invokeCount++;
      invalidateCount++;
      isOriginRemote = event.isOriginRemote();
    }
@return first key found on the given member
geode-cq/src/distributedTest/java/org/apache/geode/internal/cache/RemoteCQTransactionDUnitTest.java