code: public function handle(ServerRequestInterface $request)
      {
          $actor = $request->getAttribute('actor');
          $result = false;
          $counter = 0;
  
          if ($actor !== null && $actor->isAdmin() && $request->getMethod() === 'POST') {
              $discussions = $this->discussions->query()->whereVisibleTo($actor)->get();
              foreach ($discussions as $discussion) {
                  $slug = Transliterator::transliterate($discussion->title);
                  if ($discussion->slug !== $slug) {
                      $data = [
                          'type' => 'discussions',
                          'id' => $discussion->id,
                          'attributes' => [
                              'title' => $discussion->title
                          ]
                      ];
                      $this->bus->dispatch(
                          new EditDiscussion($discussion->id, $actor, $data)
                      );
                      $counter++;
                  }
              }
              $result = true;
          }
  
          $string = $this->translator->trans('avatar4eg-transliterator.admin.settings.result');
          return new JsonResponse([
              'success'   => $result,
              'message'   => "$string $counter"
          ]);
      }
docs: {@inheritdoc}
  @throws \InvalidArgumentException