docs: public static void addJarToClasspath(ClassLoader loader, URL url) throws IOException,
        IllegalAccessException, IllegalArgumentException, InvocationTargetException,
        NoSuchMethodException, SecurityException {
      URLClassLoader sysloader = (URLClassLoader) loader;
      Class<?> sysclass = URLClassLoader.class;
  
      Method method =
          sysclass.getDeclaredMethod(MyClasspathUtils.ADD_URL_METHOD, new Class[] {URL.class});
      method.setAccessible(true);
      method.invoke(sysloader, new Object[] {url});
  
    }