}
  }

  private static class DelegatingInvocationHandlerWithEquals extends DelegatingInvocationHandler {

    DelegatingInvocationHandlerWithEquals(Object delegate) {
      super(delegate);
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof DelegatingInvocationHandlerWithEquals) {
        DelegatingInvocationHandlerWithEquals that = (DelegatingInvocationHandlerWithEquals) obj;