Sylius\Bundle\TaxonomyBundle\Doctrine\ORM\TaxonRepository::findOneBySlug PHP Method

    public function findOneBySlug($slug)
    {
        return $this->createQueryBuilder('o')->addSelect('translation')->leftJoin('o.translations', 'translation')->where('translation.slug = :slug')->setParameter('slug', $slug)->getQuery()->getOneOrNullResult();
    }