swiftでカウントダウンタイマーを作る

    var secondsRemaining = 60
    var timer = Timer()

    timer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(updateCounter), userInfo: nil, repeats: true)
        }

    @objc func updateCounter() {
        //example functionality
        if secondsRemaining > 0 {
            print("\(secondsRemaining) seconds to the end of the world")
            secondsRemaining -= 1
        }
    }