Как сделать анимация набора текста в label на swift?

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extension UILabel {
    
    func animate(newText: String, characterDelay: TimeInterval) {
        DispatchQueue.main.async {
            self.text = ""
            for (index, character) in newText.enumerated() {
                let delay = characterDelay * Double(index)
                DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
                    self.text?.append(character)
                }
            }
        }
    }
    
}

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let label = UILabel()
label.animate(newText: "Animated text", characterDelay: 0.1)