public static function site_privacy_options() {
        return [
            self::HUB_SITENOTPUBLISHED => get_string('siteprivacynotpublished', 'hub'),
            self::HUB_SITENAMEPUBLISHED => get_string('siteprivacypublished', 'hub'),
            self::HUB_SITELINKPUBLISHED => get_string('siteprivacylinked', 'hub')
        ];
    }