public function withoutMiddleware($middleware = null)
    {
        if (is_null($middleware)) {
            $this->app->instance('middleware.disable', true);

            return $this;
        }

        foreach ((array) $middleware as $abstract) {
            $this->app->instance($abstract, new class {
                public function handle($request, $next)
                {
                    return $next($request);
                }
            });
        }

        return $this;
    }