RazorDocument - [0..7)::7 - [@foo(()]
    MarkupBlock - [0..7)::7
        MarkupTextLiteral - [0..0)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
        CSharpCodeBlock - [0..7)::7
            CSharpImplicitExpression - [0..7)::7
                CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
                    Transition;[@];
                CSharpImplicitExpressionBody - [1..7)::6
                    CSharpCodeBlock - [1..7)::6
                        CSharpExpressionLiteral - [1..7)::6 - [foo(()] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:Any;ImplicitExpression[RTD];K14
                            Identifier;[foo];
                            LeftParenthesis;[(];
                            LeftParenthesis;[(];
                            RightParenthesis;[)];
