从FlowPane中获取所选图像

Question

我正在寻找从FlowPane中获取所选节点的方法：

public class MainApp extends Application
{
    @Override
    public void start(Stage primaryStage) {

        // First FlowPane

        FlowPane flow = new FlowPane(Orientation.VERTICAL);
        flow.setColumnHalignment(HPos.LEFT);
        flow.setPrefWrapLength(200);
        for (int i = 0; i < 15; i++) {
            flow.getChildren().add(new Label(String.valueOf(i)));
        }

        ContextMenu contextMenu = new ContextMenu();

        flow.setOnContextMenuRequested(new EventHandler<ContextMenuEvent>() {

            @Override
            public void handle(ContextMenuEvent event) {
                // Get selected image
            }

        });


        // Second FlowPane

        FlowPane secFlow = new FlowPane(Orientation.VERTICAL);
        secFlow.getChildren().add(<selected image>);

    }

    public static void main(String[] args) {
        launch(args);
    }

在我的情况下，我想使用ContextMenu Node从FlowPane获取，我希望将其插入到第二个FlowPane中。有没有办法做到这一点？