private function setTarget(SimpleXMLElement $element)
    {
        $target = $element->addChild('target');
        switch ($this->nb_data_object->getUseURI()) {
            case 'T':
                if (($nb_site = $this->nb_data_object->getSite()) instanceof CNabuSite &&
                    ($nb_site_target = $nb_site->getTarget($this->nb_data_object->getSiteTargetId())) instanceof CNabuSiteTarget
                ) {
                    $target->addAttribute('useURI', 'T');
                    $target->addAttribute('target', $nb_site_target->getHash());
                } else {
                    error_log("Target not exists");
                }
                break;
            case 'U':
                $translations = $this->nb_data_object->getTranslations();
                $urls = array();
                $translations->iterate(function ($lang, $nb_translation) use (&$urls) {
                    $urls[$lang] = array(
                        'url' => $nb_translation->getURL(),
                        'match' => $nb_translation->getMatchURLFragment()
                    );
                    return true;
                });
                if (count($urls) > 0) {
                    $target->addAttribute('useURI', 'U');
                    foreach ($urls as $lang => $url) {
                        if (strlen($url) > 0) {
                            $nb_language = $this->nb_data_object->getLanguage($lang);
                            $address = $target->addChild('url');
                            $address->addAttribute('lang', $nb_language->getHash());
                            $address->addAttribute('url', $url['url']);
                            $address->addAttribute('match', $url['match']);
                        }
                    }
                }
                break;
            default:
        }
    }