swift runtime应用 9行代码完成UINavigationController全屏pop手势

当我们在push出VC 后，只要在VC 中有下面代码是可以在VC的边缘用手势拖动返回去的

class VC: UIViewController,UIGestureRecognizerDelegate {
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationController?.setNavigationBarHidden(true, animated: true)
        navigationController?.interactivePopGestureRecognizer?.delegate = self
        navigationController?.interactivePopGestureRecognizer?.isEnabled = true
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        navigationController?.setNavigationBarHidden(false, animated: true)
    }
}

但要在所有push出的VC中需要在全屏拖动可以返回去，那么在使用UINavigationController处用CustomNC即可

import UIKit
class CustomNC: UINavigationController {
    override func viewDidLoad() {
        supe