VersionPress\Storages\MetaEntityStorage::getJoinedKeyByVpId PHP 메소드

    private function getJoinedKeyByVpId($parent, $vpId)
    {
        foreach ($parent as $field => $value) {
            if (Strings::contains($field, $vpId)) {
                return $field;
            }
        }
        return null;
    }