public function findAnonymouslyCreatedById($id)
    {
        $query = $this->createQueryBuilder('c')
            ->where('c.id = :id')
            ->andWhere('c.active = :active')
            //->andWhere('c.author IS NULL')
            ->setParameters(['id' => $id, 'active' => 0])
            ->getQuery();

        return $query->useResultCache(true, self::CACHE_TTL)->getSingleResult();
    }