class MainView : View() {
    override val root = vbox {
        button("Open and reposition").action {
            find<ChildView>().openModal()
        }
    }
}

class ChildView : View() {
    override val root = label("Tada :)")
    override fun onDock() {
        currentStage?.apply {
            x = 1.0
            y = 1.0
        }
    }
}