final Collection<String> rval = new ArrayList<String>();
if (!this.initializedProperly) return rval;
// Check if we can get the requested information out of the cache
JARInformation cacheEntry = null;
// If it is a JAR entry, check if we have cache information
if (location instanceof JARClasspathLocation) {
cacheEntry = ((JARClasspathLocation) location).getCacheEntry();