如何在MacOS上的Swift中使用自动布局在x轴上居中显示视图？

import Cocoa

let view = NSView()

view.wantsLayer = true
view.layer?.backgroundColor = NSColor.red.cgColor

self.view.addSubview(view)

view.translatesAutoresizingMaskIntoConstraints = false

let centerXConstraint = NSLayoutConstraint(item: view, attribute: .centerX, relatedBy: .equal, toItem: self.view, attribute: .centerX, multiplier: 1.0, constant: 0.0)

self.view.addConstraint(centerXConstraint)

self.view.needsLayout = true
self.view.layoutSubtreeIfNeeded()