如何在segue上“取消”AVAudioSession到另一个视图控制器？

import AVFoundation

class DestinationViewController: UIViewController {
    var audioSession: AVAudioSession?

    override func viewDidLoad() {
        super.viewDidLoad()
        // 在视图加载时保存当前的音频会话设置
        audioSession = AVAudioSession.sharedInstance()
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        // 在视图即将显示时，恢复默认的音频会话设置
        try? audioSession?.setCategory(.ambient, mode: .default)
        try? audioSession?.setActive(true)
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        // 在视图即将消失时，恢复之前保存的音频会话设置
        try? audioSession?.setActive(false)
    }
}