public function handle(FormInterface $form, ServerRequestInterface $request, ResponseInterface &$response, Authorization $authorization)
 {
     if ('POST' !== $request->getMethod()) {
         return false;
     }
     $httpFoundationFactory = new HttpFoundationFactory();
     $symfony_request = $httpFoundationFactory->createRequest($request);
     $form->submit($symfony_request);
     if (!$form->isValid()) {
         return false;
     }
     $button = $form->get('accept');
     if (!$button instanceof ClickableInterface) {
         throw new InvalidArgumentException('Unable to find the button named "accept".');
     }
     $authorization->setAuthorized($button->isClicked());
     $this->endpoint->authorize($authorization, $response);
 }