public static function get_meta_data()
    {
        $data = self::$meta_data;
        
        $defaults = array(
            'Description' => _t('DocumentationViewer.OPENSEARCHDESC', 'Search the documentation'),
            'Tags' => _t('DocumentationViewer.OPENSEARCHTAGS', 'documentation'),
            'Contact' => Config::inst()->get('Email', 'admin_email'),
            'ShortName' => _t('DocumentationViewer.OPENSEARCHNAME', 'Documentation Search'),
            'Author' => 'SilverStripe'
        );
        
        foreach ($defaults as $key => $value) {
            if (isset($data[$key])) {
                $defaults[$key] = $data[$key];
            }
        }
        
        return $defaults;
    }