Bug 214649 [Markers] Allow markerAttributeGroupings and markerGroups to be specified within contentGenerators
With everything at the top level it is hard to see the relation to a contentGenerator and the groups and attribute groupings. These should be sub elements a la menus.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
* Add the resources in resourceMapping to the resourceCollection
	 * 
	 * @param resourceCollection
	 * @param resourceMapping
	 */
	private void addResources(Collection resourceCollection,
			ResourceMapping resourceMapping) {
		try {
			ResourceTraversal[] traversals = resourceMapping.getTraversals(
					ResourceMappingContext.LOCAL_CONTEXT,
					new NullProgressMonitor());
			for (int i = 0; i < traversals.length; i++) {
				ResourceTraversal traversal = traversals[i];
				IResource[] result = traversal.getResources();
				for (int j = 0; j < result.length; j++) {
					resourceCollection.add(result[j]);
				}
			}
		} catch (CoreException e) {
			MarkerSupportInternalUtilities.handle(e);
		}
	}
	/**
	 * Return whether the filters are being ANDed or ORed.
	 * 
	 * @return boolean
	 */
	boolean andFilters() {
		return andFilters;
	}