public function export(\SimpleXMLElement $xml)
    {
        $type = $xml->addChild('library');
        $type->addAttribute('handle', $this->getSystemCaptchaLibraryHandle());
        $type->addAttribute('name', $this->getSystemCaptchaLibraryName());
        $type->addAttribute('package', $this->getPackageHandle());
        $type->addAttribute('activated', $this->isSystemCaptchaLibraryActive() ? '1' : '0');
    }