title: Adding space between buttons in VBox
body: <p>I have a collection of buttons:</p>
  <pre><code>VBox menuButtons = new VBox();
  menuButtons.getChildren().addAll(addButton, editButton, exitButton);
  </code></pre>
  <p>I want to add some spacing between these buttons, without using a CSS style sheet. I think there should be a way to do this.</p>
  <p><code>setPadding();</code> is for the <code>Button</code>s in the <code>VBox</code>.<br />
  <code>setMargin();</code> should be for the <code>VBox</code> itself. But I didn't find a way for the spacing between the buttons.</p>
  <p>I'm glad for any ideas. :)</p>