code: public function getPaths()
      {
          $qb = $this
              ->createQueryBuilder('r')
              ->select('r.path');
  
          $paths = [];
          foreach ($qb->getQuery()->getArrayResult() as $item) {
              $paths[$item['path']] = $item['path'];
          }
  
          return $paths;
      }
docs: {@inheritdoc}