@Override
    public void afterUpdate(EntryEvent e) {
      synchronized (CONTROL_LOCK) {
        events.add(new EventWrapper(e, TYPE_UPDATE));
        updateEvents.add(e);
        CONTROL_LOCK.notifyAll();
      }
    }
This method is not implemented to test event count matches the eventsToCheck.size() which is
confusing. It will wait and return if it got something in the eventsToCheck or not.
geode-dunit/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheServerTestUtil.java