code: public void stop() {
  		hits = 0;
  		misses = 0;
  		unavailable = 0;
  		delayedHits = 0;
  		delayedMisses = 0;
  		data.clear();
  		mirror.clear();
  		isStarted = false;
  	}
docs: Clears storage. Resets statistics.
  Is invoked by superclass.