start {
    stage(title: "TestFX", visible: true, maximized: true) {
        scene() {
            borderPane() {
                top: menuBar() {
                    menu(text: "File") {
                        menuItem(text: "New")
                        menuItem(text: "Open")
                        menuItem(text: "Save")
                        separatorMenuItem()
                        menuItem(text: "Exit")
                    }
                    menu(text: "Edit")
                    menu(text: "Help") {
                        menuItem(text: "About")
                    }
                }
                center: tabPane() {
                    tab(text: "Tab1")
                    tab(text: "Tab2")
                    tab(text: "Tab3")
                }
            }
        }
    }
}