private function createFindBySubjectQueryBuilder()
    {
        $as = $this->getAlias();
        $qb = $this->createQueryBuilder();

        return $qb
            ->andWhere($qb->expr()->eq($as . '.subjectIdentity.provider', ':provider'))
            ->andWhere($qb->expr()->eq($as . '.subjectIdentity.identifier', ':identifier'));
    }