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/views/markers/internal/MarkerGroup.java
return 1;
			}
			
			if (item2.getMarker() == null)
				return -1;
			try {
				return (findGroupValue(item2.getMarker().getType(),
						item2.getMarker()).getPriority() - findGroupValue(
						item1.getMarker().getType(), item1.getMarker())
						.getPriority());
			} catch (CoreException exception) {
				MarkerSupportInternalUtilities.handle(exception);
				return 0;
			}
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.ui.internal.provisional.views.markers.api.MarkerField#getColumnHeaderText()
		 */
		public String getColumnHeaderText() {
			return markerGroup.getTitle();
		}
	}
	private static final String PROBLEMS_CONTENTS = "org.eclipse.ui.ide.problemsGenerator"; 
	private static MarkerGroupingEntry undefinedEntry = new MarkerGroupingEntry(
			MarkerMessages.FieldCategory_Uncategorized, null, 0);
	protected IField field;
	protected MarkerField markerField;
	private Map typesToMappings = new HashMap();