设置NSAlert窗口的宽度

Question

我使用此代码显示nsalert消息：

let alert = NSAlert()
alert.informativeText = "My Text"
alert.addButton(withTitle: "Button 1")
alert.addButton(withTitle: "Button 2")
alert.runModal()

有没有办法设置警报窗口的宽度值？