code: private void addNestedFieldExamples() {
  		add(new WHeading(HeadingLevel.H2, "Label nesting which is technically OK"));
  		/* Just because it is OK to do this does not mean you should! So these "examples" have far fewer comments. */
  		WPanel errorLayoutPanel = new WPanel();
  		errorLayoutPanel.setLayout(new FlowLayout(FlowLayout.VERTICAL, Size.LARGE));
  		errorLayoutPanel.setMargin(new Margin(null, null, Size.XL, null));
  		add(errorLayoutPanel);
  		errorLayoutPanel.add(new ExplanatoryText("This example shows WLabels with a single nested simple form control WTextField."
  						+ " This is not a contravention of the HTML specification but you should not do it."));
  		WLabel outerLabel = new WLabel("Label with nested WTextField and not 'for' anything");
  		errorLayoutPanel.add(outerLabel);
  		outerLabel.add(new WTextField());
  		WTextField innerField = new WTextField();
  		outerLabel = new WLabel("Label 'for' nested WTextField", innerField);
  		errorLayoutPanel.add(outerLabel);
  		outerLabel.add(innerField);
  	}
docs: Examples showing WLabel with a nested input control WComponent.
  This is VERY dangerous as only a very few WComponents are valid for this scenario. If you go down this route: stop!!
  These are really here for framework testing, not as examples as to  how to do things.