code: List<String> findInPackage(Test test, String packageName) {
      	List<String> localClsssOrPkgs = new ArrayList<String>();
  
          packageName = packageName.replace('.', '/');
          Enumeration<URL> urls;
  
          try {
              urls = classloader.getResources(packageName);
              // test for empty
              if (!urls.hasMoreElements())
              {
                  log.warn("Unable to find any resources for package '" + packageName + "'");
              }
          }
          catch (IOException ioe) {
              log.warn("Could not read package: " + packageName);
              return localClsssOrPkgs;
          }
  
          return findInPackageWithUrls(test, packageName, urls);
      }
docs: Scans for classes starting at the package provided and descending into subpackages.
  Each class is offered up to the Test as it is discovered, and if the Test returns
  true the class is retained.
  
  @param test        an instance of {@link Test} that will be used to filter classes
  @param packageName the name of the package from which to start scanning for
  classes, e.g. {@code net.sourceforge.stripes}
  @return List of packages to export.