     /// - Note: **BETA API** This API is subject to change.
     public static func serve(urlString urlString: String,
        type: PresentationType = .Default, redirectWindow: UIWindow,
+       kitchenWindowWillBecomeVisible: (() -> ())? = nil,
        didRedirectToWindow: (() -> ())? = nil)
     {
         Kitchen._navigationControllerDelegateWillShowCount = 0

        Kitchen.navigationController.delegate = sharedKitchen
        Kitchen.didRedirectToWindow = didRedirectToWindow
        Kitchen.redirectWindow = redirectWindow
        Kitchen.serve(urlString: urlString, type: type)
        Kitchen.window.makeKeyAndVisible()
    }

    /// - Note: **BETA API** This API is subject to change.
    public static func serve(xmlString xmlString: String,
       type: PresentationType = .Default, redirectWindow: UIWindow,
       kitchenWindowWillBecomeVisible: (() -> ())? = nil,
       didRedirectToWindow: (() -> ())? = nil)
    {
        Kitchen._navigationControllerDelegateWillShowCount = 0
