Bug 221521 [Markers] New markers API needs to be pared down
We have too much API in some of the new classes and they can be moved to internals
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerGroupingEntry.java
private static final String PRIORITY = "priority"; 
	private MarkerGroup markerGroup;
	private String label;
	private String id;
	private int sortPriority;
	/**
	 * Create a new instance of the receiver from element.
	 * @param element
	 */
	public MarkerGroupingEntry(IConfigurationElement element) {
		label = element.getAttribute(MarkerSupportRegistry.LABEL);
		id = element.getAttribute(MarkerSupportConstants.ATTRIBUTE_ID);
		sortPriority = Integer.valueOf(element.getAttribute(PRIORITY))
				.intValue();