如何获取Show segue的定时功能和时长

import UIKit

class SourceViewController: UIViewController {
    var timer: Timer?
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    @IBAction func startTimerButtonTapped(_ sender: UIButton) {
        // 启动定时器
        timer = Timer.scheduledTimer(timeInterval: 5.0, target: self, selector: #selector(timerFired), userInfo: nil, repeats: false)
    }
    
    @objc func timerFired() {
        // 定时器触发时执行segue
        performSegue(withIdentifier: "showSegueIdentifier", sender: self)
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "showSegueIdentifier" {
            // 在这里可以进行一些准备工作，比如传递数据给目标视图控制器
        }
    }
}