Bug 221337 [Markers] MarkerItem has too much API
We are exposing too much as API in MarkerItem. We should only provide getAtttributeValue and the methods that support PATH_ATTRIBUTE and NAME_ATTRIBUTE as they are tricky. Everything else needs to be pushed down to an internal class. We should mention the relevant IMarker constants for those removed.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
}
	/**
	 * Set the progress service for the receiver.
	 * 
	 * @param service
	 */
	void setProgressService(IWorkbenchSiteProgressService service) {
		progressService = service;
		if (service != null) {
			service.showBusyForFamily(ResourcesPlugin.FAMILY_MANUAL_BUILD);
			service.showBusyForFamily(ResourcesPlugin.FAMILY_AUTO_BUILD);
			service
					.showBusyForFamily(MarkerContentGenerator.CACHE_UPDATE_FAMILY);
		}
	}
	/**
	 * Set the updateJob for the receiver.
	 * 
	 * @param job
	 */
	public void setUpdateJob(Job job) {
		updateJob = job;
	}
	/**
	 * Sort the newMarkers and build categories if required.
	 * 
	 * @param monitor
	 * @param newMarkers
	 */
	void sortAndMakeCategories(IProgressMonitor monitor, MarkerMap newMarkers) {