swift – 如何在从Alamofire v3迁移到v4后取消所有请求？

我使用此代码取消所有Alamofire请求：

func stopAllSessions() {
    Alamofire.Manager.sharedInstance.session.getAllTasksWithCompletionHandler { tasks in
        tasks.forEach { $0.cancel() }
    }
}

在swift 3迁移之后,这不起作用,我在Alamofire 4的SessionManager中找不到getAllTask​​sWithCompletionHandler方法.

@R_502_5620@

实测：

Alamofire.SessionManager.default.session.getTasksWithCompletionHandler { (sessionDataTask,uploadData,downloadData) in
        sessionDataTask.forEach { $0.cancel() }
        uploadData.forEach { $0.cancel() }
        downloadData.forEach { $0.cancel() }
    }