Bug 10236 Enable decorators in Type hierarchy view
See the packages view for how to do this.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/MethodsViewer.java
private static final String TAG_HIDEFIELDS= "hidefields"; 
	private static final String TAG_HIDESTATIC= "hidestatic"; 
	private static final String TAG_HIDENONPUBLIC= "hidenonpublic"; 
	private static final String TAG_SHOWINHERITED= "showinherited";		 
	private static final String TAG_VERTICAL_SCROLL= "mv_vertical_scroll";		 
	
	private static final int LABEL_BASEFLAGS= JavaElementLabels.M_PARAMETER_TYPES;
	
	private MethodsViewerFilterAction[] fFilterActions;
	private MethodsViewerFilter fFilter;
	
	private JavaUILabelProvider fLabelProvider;