在Cocoa中更改文本光标(插入符号)颜色？

import Cocoa

class ViewController: NSViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        let textView = NSTextView(frame: NSRect(x: 0, y: 0, width: 200, height: 100))
        textView.insertionPointColor = NSColor.red

        self.view.addSubview(textView)
    }
}