public override LessNode VisitMeasurement(LessParser.MeasurementContext context)
        {
            string unit = context.unit()?.GetText()
                          ?? context.identifier()?.GetText();

            return(new Measurement(decimal.Parse(context.Number().GetText(), CultureInfo.InvariantCulture), unit));
        }
 public virtual LessNode VisitMeasurement(LessParser.MeasurementContext context)
 {
     throw new System.NotImplementedException();
 }