@Override
  protected int getSplitUrlIndex(String url) {
    int jarNameEnd = url.lastIndexOf(JarFileSystem.JAR_SEPARATOR.charAt(0));
    String jarUrl = jarNameEnd >= 0 ? url.substring(0, jarNameEnd) : url;
    return super.getSplitUrlIndex(jarUrl);
  }
@Override
  protected int getSplitUrlIndex(String url)