public override LessNode VisitGenericAtRule(LessParser.GenericAtRuleContext context)
        {
            var identifier = (Identifier)context.identifier().Accept(this);
            var value      = (Expression)context.expression()?.Accept(this);
            var block      = (RuleBlock)context.block().Accept(this);

            return(new GenericAtRule(identifier, value, block));
        }
 public virtual LessNode VisitGenericAtRule(LessParser.GenericAtRuleContext context)
 {
     throw new System.NotImplementedException();
 }