public function findPagesByContent($content)
    {
        $contentUids = array_merge($this->getContentsParentUids($content->getUid()), [$content->getUid()]);
        $contentUids = implode(', ', array_unique(array_map(function ($uid) {
            return '"'.$uid.'"';
        }, $contentUids)));

        $pageUids = $this->_em->getConnection()->executeQuery(
            sprintf('SELECT uid FROM page WHERE contentset IN (%s)', $contentUids)
        )->fetchAll(\PDO::FETCH_COLUMN);

        return $this->_em->createQueryBuilder('p')
            ->select('p')
            ->from('BackBee\NestedNode\Page', 'p')
            ->where('p._uid IN (:uids)')
            ->setParameter('uids', $pageUids)
            ->getQuery()
            ->getResult()
        ;
    }