private void addMapListener(Cache cache, MapListener listener) {
if (cache instanceof CacheWrapper) {
Cache wrapped = ((CacheWrapper)cache).getWrappedCache();
if (wrapped instanceof ClusteredCache) {
((ClusteredCache)wrapped).addMapListener(listener, new MapEventFilter(MapEventFilter.E_KEYSET), false);
// Keep track of the listener that we added to the cache
mapListeners.put(cache, listener);
}
}
}