Bug 293130 Polishing the Filter extension point
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterGroup.java
public AddSubFilterAction() {
			setText(NLS
					.bind(
							IDEWorkbenchMessages.ResourceFilterPage_addSubFilterActionLabel,
							null));
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.jface.action.Action#run()
		 */
		public void run() {
			ISelection selection = filterView.getSelection();
			if (selection instanceof IStructuredSelection) {