RazorDocument - [0..27)::27 - [<span @class='@foo'></span>]
    MarkupBlock - [0..27)::27
        MarkupElement - [0..27)::27
            MarkupStartTag - [0..20)::20 - [<span @class='@foo'>] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                Text;[span];
                MarkupAttributeBlock - [5..19)::14 - [ @class='@foo']
                    MarkupTextLiteral - [5..6)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        Whitespace;[ ];
                    MarkupTextLiteral - [6..12)::6 - [@class] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        Transition;[@];
                        Text;[class];
                    Equals;[=];
                    MarkupTextLiteral - [13..14)::1 - ['] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        SingleQuote;['];
                    GenericBlock - [14..18)::4
                        MarkupDynamicAttributeValue - [14..18)::4 - [@foo]
                            GenericBlock - [14..18)::4
                                CSharpCodeBlock - [14..18)::4
                                    CSharpImplicitExpression - [14..18)::4
                                        CSharpTransition - [14..15)::1 - Gen<None> - SpanEditHandler;Accepts:None
                                            Transition;[@];
                                        CSharpImplicitExpressionBody - [15..18)::3
                                            CSharpCodeBlock - [15..18)::3
                                                CSharpExpressionLiteral - [15..18)::3 - [foo] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14
                                                    Identifier;[foo];
                    MarkupTextLiteral - [18..19)::1 - ['] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        SingleQuote;['];
                CloseAngle;[>];
            MarkupEndTag - [20..27)::7 - [</span>] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                ForwardSlash;[/];
                Text;[span];
                CloseAngle;[>];
