如何实现URLSessionDelegate以允许自签名证书？(iOS/Swift)

class CustomURLSessionDelegate: NSObject, URLSessionDelegate {
    // 实现URLSessionDelegate协议中的方法
}

func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
    // 处理服务器返回的证书
    if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust {
        if let serverTrust = challenge.protectionSpace.serverTrust {
            let credential = URLCredential(trust: serverTrust)
            completionHandler(.useCredential, credential)
        }
    }
}

let session = URLSession(configuration: .default, delegate: CustomURLSessionDelegate(), delegateQueue: nil)