public function findByCollectionId($collectionId)
{
$queryBuilder = $this->createQueryBuilder('fileVersionMeta')->leftJoin('fileVersionMeta.fileVersion', 'fileVersion')->leftJoin('fileVersion.file', 'file')->leftJoin('file.media', 'media')->leftJoin('media.collection', 'collection')->where('collection.id = :collectionId');
$queryBuilder->setParameter('collectionId', $collectionId);
return $queryBuilder->getQuery()->getResult();
}