docs: public static void loadJar(URLClassLoader loader, File jarFile) throws UtilException {
  		try {
  			final Method method = ClassUtil.getDeclaredMethod(URLClassLoader.class, "addURL", URL.class);
  			if (null != method) {
  				method.setAccessible(true);
  				final List<File> jars = loopJar(jarFile);
  				for (File jar : jars) {
  					ReflectUtil.invoke(loader, method, new Object[] { jar.toURI().toURL() });
  				}
  			}
  		} catch (IOException e) {
  			throw new UtilException(e);
  		}
  	}