Bug 245457 [Forms] ExpandableComposite should have option of not drawing the title focus box
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/widgets/ExpandableComposite.java
public void addExpansionListener(IExpansionListener listener) {
		listeners.add(listener);
	}
	/**
	 * Removes the expansion listener.
	 * 
	 * @param listener
	 *            the listner to remove
	 */
	public void removeExpansionListener(IExpansionListener listener) {
		listeners.remove(listener);
	}
	/**
	 * If TITLE_BAR or SHORT_TITLE_BAR style is used, title bar decoration will
	 * be painted behind the text in this method. The default implementation
	 * does nothing - subclasses are responsible for rendering the title area.
	 * 
	 * @param e
	 *            the paint event
	 */
	protected void onPaint(PaintEvent e) {
	}
	/**
	 * Returns description control that will be placed under the title if
	 * present.
	 * 
	 * @return the description control or <samp>null </samp> if not used.
	 */
	protected Control getDescriptionControl() {
		return null;