Bug 215004 [Markers] New Problems view: 'Group by > Type' broken
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/TypeMarkerGroup.java
* 
		 * @see org.eclipse.ui.internal.provisional.views.markers.api.MarkerField#getValue(org.eclipse.ui.internal.provisional.views.markers.api.MarkerItem)
		 */
		public String getValue(MarkerItem item) {
			if (item.isConcrete()) {
				IMarker marker = item.getMarker();
				if (marker == null || !marker.exists())
					return MarkerMessages.FieldCategory_Uncategorized;
				String groupName = MarkerSupportRegistry.getInstance()
						.getCategory(marker);
				if (groupName == null) {
					String typeId;
					try {
						typeId = marker.getType();
					} catch (CoreException e) {
						Util.log(e);
						return MarkerMessages.FieldCategory_Uncategorized;
					}
					MarkerType type = MarkerTypesModel.getInstance().getType(
							typeId);
					groupName = type.getLabel();
				}
				return groupName;
			}
			return Util.EMPTY_STRING;
		}
	}
	private String name;
	/**
	 * Create a new instance of the receiver.