public static function getLicenseFile()

    {
        if (!isset(self::$file)) {
            $path = Grav::instance()['locator']->findResource('user-data://') . '/licenses.yaml';
            if (!file_exists($path)) {
                touch($path);
            }
            self::$file = CompiledYamlFile::instance($path);
        }

        return self::$file;
    }