CSharpCodeBlock - [0..19)::19 - [@val?.more(false)?.]
    CSharpImplicitExpression - [0..19)::19
        CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
            Transition;[@];
        CSharpImplicitExpressionBody - [1..19)::18
            CSharpCodeBlock - [1..19)::18
                CSharpExpressionLiteral - [1..19)::18 - [val?.more(false)?.] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14
                    Identifier;[val];
                    QuestionMark;[?];
                    Dot;[.];
                    Identifier;[more];
                    LeftParenthesis;[(];
                    Keyword;[false];
                    RightParenthesis;[)];
                    QuestionMark;[?];
                    Dot;[.];
