如何在另一个视图控制器中加载xib文件的视图

class CustomViewController: UIViewController {
    override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
        
        // 加载xib文件
        if let views = Bundle.main.loadNibNamed("CustomView", owner: nil, options: nil) as? [UIView],
           let customView = views.first {
            // 设置自定义视图的位置和大小
            customView.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
            
            // 将自定义视图添加到当前视图控制器的视图中
            view.addSubview(customView)
        }
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
}

let customViewController = CustomViewController()
addChild(customViewController)
view.addSubview(customViewController.view)
customViewController.didMove(toParent: self)