private ReturnStatementNode BuildReturnStatementNode(LexSpan lex, SyntaxNodeOrToken node)
        {
            var res = new ReturnStatementNode();

            res.AddNode(new ReturnToken(lex));
            res.AddNode(node);

            return(res);
        }
        private ReturnStatementNode BuildReturnStatementNode(LexSpan lex)
        {
            var res = new ReturnStatementNode();

            res.AddNode(new ReturnToken(lex));

            return(res);
        }