Bug 302791 [CommonNavigator] Associated editor does not close when deleting resource (editorInput) through CommonNavigator
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/sorters/CommonSorterDescriptor.java
private IConfigurationElement element;
	private Expression parentExpression;
	private String id;
	protected CommonSorterDescriptor(IConfigurationElement anElement) { 
		element = anElement;
		init();
	}
	private void init() {
		id = element.getAttribute(ATT_ID);
		if (id == null) {
			id = ""; 
		}
		IConfigurationElement[] children = element
				.getChildren(TAG_PARENT_EXPRESSION);