protected function generateSecurity()
    {
        $securitySystemNode = $this->xpath->query('/x:webspace/x:security/x:system');
        if ($securitySystemNode->length > 0) {
            $security = new Security();
            $security->setSystem($securitySystemNode->item(0)->nodeValue);
            $this->webspace->setSecurity($security);
        }
    }