如何在ViewController Swift上修复PageMenu

import PageMenu

var pageMenu: CAPSPageMenu?

// 设置菜单项的样式
let parameters: [CAPSPageMenuOption] = [
    .scrollMenuBackgroundColor(UIColor.white),
    .viewBackgroundColor(UIColor.white),
    .selectionIndicatorColor(UIColor.red),
    .bottomMenuHairlineColor(UIColor.gray),
    .menuItemFont(UIFont(name: "HelveticaNeue", size: 15.0)!),
    .menuHeight(40.0),
    .menuItemWidth(90.0),
    .centerMenuItems(true)
]

// 创建PageMenu实例
pageMenu = CAPSPageMenu(viewControllers: viewControllers, frame: CGRect(x: 0.0, y: 0.0, width: self.view.frame.width, height: self.view.frame.height), pageMenuOptions: parameters)

self.view.addSubview(pageMenu!.view)

extension ViewController: CAPSPageMenuDelegate {
    func didMoveToPage(_ controller: UIViewController, index: Int) {
        // 处理页面切换后的逻辑
    }
}

pageMenu!.delegate = self

func didMoveToPage(_ controller: UIViewController, index: Int) {
    // 处理页面切换后的逻辑
}