public function _removeIdxContentContents(array $contentUids)
    {
        if (0 < count($contentUids)) {
            $this->getEntityManager()
                    ->createQuery('DELETE FROM BackBee\ClassContent\Indexes\IdxContentContent i
                        WHERE i.content_uid IN(:content_uids)
                        OR i.subcontent_uid IN(:subcontent_uids)')
                    ->setParameters(array(
                        'content_uids' => $contentUids,
                        'subcontent_uids' => $contentUids, ))
                    ->execute();
        }

        return $this;
    }