MarkupBlock - [0..17)::17 - [<a href='@foo' />]
    MarkupTagBlock - [0..17)::17 - [<a href='@foo' />]
        MarkupTextLiteral - [0..2)::2 - [<a] - Gen<Markup> - SpanEditHandler;Accepts:Any
            OpenAngle;[<];
            Text;[a];
        MarkupAttributeBlock - [2..14)::12 - [ href='@foo']
            MarkupTextLiteral - [2..3)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
                Whitespace;[ ];
            MarkupTextLiteral - [3..7)::4 - [href] - Gen<Markup> - SpanEditHandler;Accepts:Any
                Text;[href];
            Equals;[=];
            MarkupTextLiteral - [8..9)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
                SingleQuote;['];
            GenericBlock - [9..13)::4
                MarkupDynamicAttributeValue - [9..13)::4 - [@foo]
                    GenericBlock - [9..13)::4
                        CSharpCodeBlock - [9..13)::4
                            CSharpImplicitExpression - [9..13)::4
                                CSharpTransition - [9..10)::1 - Gen<None> - SpanEditHandler;Accepts:None
                                    Transition;[@];
                                CSharpImplicitExpressionBody - [10..13)::3
                                    CSharpCodeBlock - [10..13)::3
                                        CSharpExpressionLiteral - [10..13)::3 - [foo] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14
                                            Identifier;[foo];
            MarkupTextLiteral - [13..14)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
                SingleQuote;['];
        MarkupTextLiteral - [14..17)::3 - [ />] - Gen<Markup> - SpanEditHandler;Accepts:None
            Whitespace;[ ];
            ForwardSlash;[/];
            CloseAngle;[>];
