AlamofireImage：如何为af_setImage设置timeoutIntervalForRequest？

Question

我正在尝试使用af_setImage将图像添加到UICollectionViewCell。默认的timeoutIntervalForRequest是60秒，但是我不应该等待用户超过15秒。如何为af_setImage设置自定义timeoutIntervalForRequest？我尝试了以下解决方案，但是它们没有用。

let downloader = UIImageView.af_sharedImageDownloader
let configuration = downloader.sessionManager.session.configuration
configuration.timeoutIntervalForResource = 15
configuration.timeoutIntervalForRequest = 15

af_setImage(withURL: url, completion: { (response) in
    // do stuff
})

尝试了底部解决方案，但没有成功

af_imageDownloader?.sessionManager.session.configuration.timeoutIntervalForResource = 15


af_imageDownloader?.sessionManager.session.configuration.timeoutIntervalForRequest = 15

                //tried this instead of af_setImage, this is not working too.
                af_imageDownloader?.sessionManager.request(URLRequest(url: url))
                    .responseJSON {
                        response in
                        switch (response.result) {
                        case .success:
                            // success
                            break
                        case .failure(let error):
                            // fail
                            break
                        }
                }