Chaining UIView animations

pyramid-of-DOOM.swift

UIView.animate(withDuration: time, animations: { [unowned self] in
    // animation
    self.animationFunction()
}) {  [unowned self] success in
    // non-animation function
    self.nonAnimationFunction()
    UIView.animate(withDuration: time, animations: {
        // animation
        self.animationFunction()
    }) { success in
        // function that takes time
        self.functionThatTakesTime {
            UIView.animate(withDuration: time, animations: {
                // animation
                self.animationFunction()
            }) { success in
                UIView.animate(withDuration: time, animations: {
                    // animation
                    self.animationFunction()
                })
            }
        }
    }
}