Generic view with custom layer class

CustomLayerView.swift

class CustomLayerView<T: CALayer>: UIView {
    
    var customLayer: T {
        get {
            return self.layer as! T
        }
    }
    
    override class func layerClass() -> AnyClass {
        return T.self
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError()
    }
}