code: public EventSource createEventSource(boolean createAsyncEventSource, String cacheName) throws DynamicCacheServiceNotStarted {
      	if (objectCacheUnit == null) {
      		throw new DynamicCacheServiceNotStarted("Object cache service has not been started."); 
      	}
      	return objectCacheUnit.createEventSource(createAsyncEventSource, cacheName);
  	}
docs: This implements the method in the CacheUnit interface.
  This is called to create event source object.
  It calls ObjectCacheUnit to perform this operation.
  
  @param createAsyncEventSource boolean true - using async thread context for callback; false - using caller thread for callback
  @param cacheName The cache name
  @return EventSourceIntf The event source