public override ASTN VisitLetIn([NotNull] LetInContext context)
        {
            LetInNode node = new LetInNode(context)
            {
                propertyLet = new List <PropertyNode>(),
                exprBody    = VisitExpr(context.expr()) as ExprNode
            };

            foreach (var property in context.property())
            {
                node.propertyLet.Add(VisitProperty(property) as PropertyNode);
            }

            return(node);
        }