public static function getFormatTemplate($name) {
        $file = sprintf(
            '%s/Model/template/format/%s.html',
            __DIR__,
            $name
        );

        if (!file_exists($file)) {
            return null;
        }

        if (!isset(self::$templates[$name])) {
            self::$templates[$name] = file_get_contents($file);
        }

        return self::$templates[$name];
    }