【已解决】webman请问下异步http怎么设置回调函数？

public function index()
    {
        $this->get('http://192.168.1.201/');
    }

    public function get(string $url)
    {
        $http = new Client();
        $http->request($url, [
            'method' => 'get',
            'version' => '1.1',
            'success' => 'handleAsyncResult'
        ]);
    }

    public function handleAsyncResult() {

    }

$http->request($url, [
            'method' => 'get',
            'version' => '1.1',
            'success' => [$this, 'handleAsyncResult']
        ]);