No documentation for managing a dynamically generated list of platform menu items

import QtQuick 2.7
import QtQuick.Controls 2.3
import Qt.labs.platform 1.0 as Platform

ApplicationWindow {
    id: root
    visible: true
    width: 640
    height: 480

    property int model: 10

    Timer {
        running: true
        repeat: true
        interval: 2000
        onTriggered: {
            if (model > 1)
                --model
        }
    }

    Platform.MenuBar {
        Platform.Menu {
            title: "Menu"

            Platform.Menu {
                id: subMenu
                title: "Sub-menu"

                Platform.MenuItem {
                    text: "A"
                }
                Platform.MenuItem {
                    text: "B"
                }
                Instantiator {
                    model: root.model
                    delegate: Platform.MenuItem {
                        text: "C"
                    }
                    onObjectAdded: subMenu.addItem(object)
                    onObjectRemoved: subMenu.removeItem(object)
                }
            }
        }
    }
}