Как добавить кнопку в alert view на swift?

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let alertController = UIAlertController(title: "Alert Title", message: "Alert Message", preferredStyle: .alert)

let okAction = UIAlertAction(title: "OK", style: .default) { _ in
    print("OK button tapped")
}

let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { _ in
    print("Cancel button tapped")
}

alertController.addAction(okAction)
alertController.addAction(cancelAction)

present(alertController, animated: true, completion: nil)

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func showCustomAlert() {
    let alertController = UIAlertController(title: "Alert Title", message: "Alert Message", preferredStyle: .alert)

    let okAction = UIAlertAction(title: "OK", style: .default) { _ in
        print("OK button tapped")
    }

    let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { _ in
        print("Cancel button tapped")
    }

    alertController.addAction(okAction)
    alertController.addAction(cancelAction)

    self.present(alertController, animated: true, completion: nil)
}