code: public function getOptions(): array
      {
          $options = [];
  
          foreach (self::DEFAULT_OPTIONS as $option => $label) {
              $options[$option] = $this->translator->trans('MSC.validCharacters.'.$label, [], 'contao_default');
          }
  
          $event = new SlugValidCharactersEvent($options);
  
          $this->eventDispatcher->dispatch(ContaoCoreEvents::SLUG_VALID_CHARACTERS, $event);
  
          return $event->getOptions();
      }
docs: Returns the options for the valid characters setting suitable for widgets.
  
  @return array<string,string>