final Map<String, List<String>> classesByPXml = new HashMap<String, List<String>>();
final Filter filter = new AlreadyEnhancedFilter();
final List<URL> usedUrls = new ArrayList<URL>(); // for fake classloader
for (URL url : event.getUrls()) {
final File file = URLs.toFile(url);
if (filter.accept(file.getName())) {
if (file.isDirectory()) {
final String pXmls = getWarPersistenceXml(url);
if (pXmls != null) {
feed(classesByPXml, pXmls);
}