Bug 20595 Preference listeners should use equals, not ==
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
* @param decorator a label decorator or <code>null</code> for no decorations.
	 * @deprecated To be removed
	 */
	public void setLabelDecorator(ILabelDecorator decorator) {
	}
	
	/*
	 * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
	 */
	public void propertyChange(PropertyChangeEvent event) {
		if (fViewer == null)
			return;
		
		boolean refreshViewer= false;
	
		if (event.getProperty() == AppearancePreferencePage.SHOW_CU_CHILDREN) {
			IActionBars actionBars= getViewSite().getActionBars();
			fActionSet.fillToolBar(actionBars.getToolBarManager());
			actionBars.updateActionBars();
			
			boolean showCUChildren= AppearancePreferencePage.showCompilationUnitChildren();
			((StandardJavaElementContentProvider)fViewer.getContentProvider()).setProvideMembers(showCUChildren);
			
			refreshViewer= true;
		}
		if (refreshViewer)
			fViewer.refresh();
	}
}