@Override
public void format(OutputStream out, ResultSet resultSet)
{
try {
Writer w = FileUtils.asUTF8(out) ;
NodeToLabelMap bnodes = new NodeToLabelMap() ;
w = new BufferedWriter(w) ;
String sep = null ;
List<String> varNames = resultSet.getResultVars() ;
List<Var> vars = new ArrayList<Var>(varNames.size()) ;