@Override
  protected synchronized Class loadClass(String s, boolean b) throws ClassNotFoundException {
    throw new UnsupportedOperationException("I18n classloader does support only resources, but not classes");
  }
@Test
  public void not_support_lookup_of_java_classes() throws ClassNotFoundException {
    assertThatThrownBy(() -> i18nClassloader.loadClass("java.lang.String"))
      .isInstanceOf(UnsupportedOperationException.class);
  }