MarkupBlock - [0..34)::34 - [<foo><!DOCTYPE foo @bar baz></foo>]
    MarkupTagBlock - [0..5)::5 - [<foo>]
        MarkupTextLiteral - [0..5)::5 - [<foo>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            Text;[foo];
            CloseAngle;[>];
    MarkupTextLiteral - [5..19)::14 - [<!DOCTYPE foo ] - Gen<Markup> - SpanEditHandler;Accepts:Any
        OpenAngle;[<];
        Bang;[!];
        Text;[DOCTYPE];
        Whitespace;[ ];
        Text;[foo];
        Whitespace;[ ];
    CSharpCodeBlock - [19..23)::4
        CSharpImplicitExpression - [19..23)::4
            CSharpTransition - [19..20)::1 - Gen<None> - SpanEditHandler;Accepts:None
                Transition;[@];
            CSharpImplicitExpressionBody - [20..23)::3
                CSharpCodeBlock - [20..23)::3
                    CSharpExpressionLiteral - [20..23)::3 - [bar] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14
                        Identifier;[bar];
    MarkupTextLiteral - [23..28)::5 - [ baz>] - Gen<Markup> - SpanEditHandler;Accepts:None
        Whitespace;[ ];
        Text;[baz];
        CloseAngle;[>];
    MarkupTagBlock - [28..34)::6 - [</foo>]
        MarkupTextLiteral - [28..34)::6 - [</foo>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            ForwardSlash;[/];
            Text;[foo];
            CloseAngle;[>];
