/** * @param GPOLink $gpoLink * @return string */ protected function getGPOLinkDN(GPOLink $gpoLink) { $toDn = new ConvertValueToDn(); $toDn->setAttribute('gpoLink'); $toDn->setLdapConnection($this->connection); $toDn->setOptions(['gpoLink' => ['attribute' => 'displayName', 'filter' => ['objectClass' => 'groupPolicyContainer']]]); return $toDn->toLdap($gpoLink->getGpo()); }