@Override
    public boolean dispatchListenerEvents(EntryEventImpl event) throws InterruptedException {
      // note that we don't synchronize on the RE before dispatching events
      event.invokeCallbacks(event.getRegion(), event.inhibitCacheListenerNotification(), false);
      return true;
    }
Provides a dummy implementation of RegionEntry so that basicPut can return an instance that
make the upper levels think it did the put.
geode-core/src/main/java/org/apache/geode/internal/cache/ProxyRegionMap.java