code: public function resetAction($token)
      {
          if ($this->container->get('security.context')->isGranted('IS_AUTHENTICATED_FULLY')) {
              return new RedirectResponse($this->container->get('router')->generate('sonata_admin_dashboard'));
          }
          $user = $this->container->get('fos_user.user_manager')->findUserByConfirmationToken($token);
          if (null === $user) {
              throw new NotFoundHttpException(sprintf('The user with "confirmation token" does not exist for value "%s"', $token));
          }
          if (!$user->isPasswordRequestNonExpired($this->container->getParameter('fos_user.resetting.token_ttl'))) {
              return new RedirectResponse($this->container->get('router')->generate('sonata_user_admin_resetting_request'));
          }
          $form = $this->container->get('fos_user.resetting.form');
          $formHandler = $this->container->get('fos_user.resetting.form.handler');
          $process = $formHandler->process($user);
          if ($process) {
              $this->setFlash('fos_user_success', 'resetting.flash.success');
              $response = new RedirectResponse($this->container->get('router')->generate('sonata_admin_dashboard'));
              $this->authenticateUser($user, $response);
              return $response;
          }
          return $this->container->get('templating')->renderResponse('SonataUserBundle:Admin:Security/Resetting/reset.html.' . $this->getEngine(), array(
              'token' => $token,
              'form' => $form->createView(),
              'base_template' => $this->container->get('sonata.admin.pool')->getTemplate('layout'),
              'admin_pool' => $this->container->get('sonata.admin.pool'),
          ));
      }
docs: {@inheritdoc}