if (!(sel instanceof IStructuredSelection))
if (sel instanceof IStructuredSelection) return new HashSet(((IStructuredSelection)sel).toList()); else
	private Set getSelectedTableEntries() {		ISelection sel= fViewer.getSelection();		if (!(sel instanceof IStructuredSelection))			return new HashSet(0);		IStructuredSelection ss= (IStructuredSelection)sel;		Set selected= new HashSet();		selected.addAll(ss.toList());		return selected;	}