code: protected Enumeration<URL> getResources(ClassLoader loader, String packageName) throws IOException {
          log.fine(LogType.LOG, "Getting resource URL for package: " + packageName + " with classloader: " + loader);
  
          // If the URL is a jar, the URLClassloader.getResources() seems to require a trailing slash.  The
          // trailing slash is harmless for other URLs
          if (!packageName.endsWith("/")) {
              packageName = packageName + "/";
          }
          return loader.getResources(packageName);
      }
docs: Strategy to get the resources by the given classloader.
  <p/>
  Notice that in WebSphere platforms there is a {@link WebSpherePackageScanClassResolver}
  to take care of WebSphere's odditiy of resource loading.
  
  @param loader      the classloader
  @param packageName the packagename for the package to load
  @return URL's for the given package
  @throws IOException is thrown by the classloader