Как нарисовать фигуру "Треугольник", используя CAShapeLayer в Swift 5

func guruTriangle() {
let path = UIBezierPath()
path.move(to: CGPoint(x: 0, y: 200))
path.addLine(to: CGPoint(x: 100, y: 0))
path.addLine(to: CGPoint(x: 200, y: 200))
path.addLine(to: CGPoint(x: 0, y: 200))

let guruLayer = CAShapeLayer()
guruLayer.path = path.cgPath
guruLayer.fillColor = UIColor.darkGray.cgColor

view.layer.addSublayer(guruLayer)
}