((BundleDescriptionImpl) bundles[i]).unload(currentTime, expireTime);
((BundleDescriptionImpl) bundles[i]).unload();
	public void unloadLazyData(long expireTime) {		long currentTime = System.currentTimeMillis();		BundleDescription[] bundles = getBundles();		// make sure no other thread is trying to unload or load		synchronized (reader) {			for (int i = 0; i < bundles.length; i++)				((BundleDescriptionImpl) bundles[i]).unload(currentTime, expireTime);		}	}