Bug 215004 [Markers] New Problems view: 'Group by > Type' broken
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/TypeMarkerGroup.java
/**
	 * TypeMarkerField is the MarkerField used for MarkerGroupungs
	 * 
	 * @since 3.4
	 * 
	 */
	class TypeMarkerField extends GroupMarkerField {
		/**
		 * Create a new instance of the receiver.
		 * @param group
		 */
		TypeMarkerField(MarkerGroup group) {
			super(group);
		}
		/*
		 * (non-Javadoc)