/**
  * @param TaxonomyInterface $taxonomy
  * @param Archetype|null    $archetype
  * @return array
  */
 public function getTaxonsAsListByArchetype(TaxonomyInterface $taxonomy, Archetype $archetype = null)
 {
     $queryBuilder = $this->getQueryBuilder()->where('o.taxonomy = :taxonomy')->andWhere('o.parent IS NOT NULL')->setParameter('taxonomy', $taxonomy);
     if ($archetype) {
         $type = $archetype->getType();
         $queryBuilder->andWhere('o.' . $type . 'Archetype =:type')->setParameter('type', $archetype);
     }
     return $queryBuilder->orderBy('o.left')->getQuery()->getResult();
 }