Bug 213014 [Markers] New view doesn't rank fatal errors first any longer when sorting per Java type
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerGroup.java
* 
		 * @see org.eclipse.ui.views.markers.internal.IField#getDescriptionImage()
		 */
		public Image getDescriptionImage() {
			return null;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.ui.views.markers.internal.IField#getImage(java.lang.Object)
		 */
		public Image getImage(Object obj) {
			return null;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.ui.views.markers.internal.IField#getPreferredWidth()
		 */
		public int getPreferredWidth() {
			return 75;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.ui.views.markers.internal.IField#getValue(java.lang.Object)
		 */
		public String getValue(Object obj) {
			MarkerNode node = (MarkerNode) obj;
			if (node.isConcrete()) {