如何在viewDidLoad中调用UIButton扩展

extension UIButton {
    func customizeButton() {
        self.backgroundColor = UIColor.blue
        self.setTitleColor(UIColor.white, for: .normal)
        self.layer.cornerRadius = 5.0
        self.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
    }
    
    @objc func buttonTapped() {
        // 按钮点击事件的处理逻辑
    }
}

override func viewDidLoad() {
    super.viewDidLoad()
    
    let button = UIButton(type: .system)
    button.frame = CGRect(x: 100, y: 100, width: 200, height: 50)
    button.setTitle("Click Me", for: .normal)
    button.customizeButton()
    
    self.view.addSubview(button)
}