javaFX中的Stage窗口怎么最大化，最小化

直接写个方法吧：
private Node createCloseButton() {
closeButton = new Button("Close");
closeButton.setId("button-close");
closeButton.setOnAction(new EventHandler() {
@Override
public void handle(ActionEvent event) {
Platform.exit();
}
});

return closeButton;
}
private Node createMaximizeButton() {
Button maximizeButton = new Button("Maximize");
maximizeButton.setId("button-maximize");

maximizeButton.setOnAction(new EventHandler() {
@Override
public void handle(ActionEvent event) {
private void moveStage(MouseEvent me, Window primaryStage) {
if (maximized.get()) {
anchor.set(new Point2D(((me.getScreenX() - primaryStage.getX()) / primaryStage.getWidth()) * backupWindowBounds.get().getWidth(), me
.getScreenY() - screen.getVisualBounds().getMinY()));
primaryStage.setWidth(backupWindowBounds.get().getWidth());
primaryStage.setHeight(backupWindowBounds.get().getHeight());
maximized.set(false);
}
primaryStage.setX(me.getScreenX() - anchor.get().getX());
primaryStage.setY(me.getScreenY() - anchor.get().getY());
}