RazorDocument - [0..29)::29 - [<span data-foo='@foo'></span>]
    MarkupBlock - [0..29)::29
        MarkupTagBlock - [0..22)::22 - [<span data-foo='@foo'>]
            MarkupTextLiteral - [0..5)::5 - [<span] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                Text;[span];
            MarkupAttributeBlock - [5..21)::16 - [ data-foo='@foo']
                MarkupTextLiteral - [5..6)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
                    Whitespace;[ ];
                MarkupTextLiteral - [6..14)::8 - [data-foo] - Gen<Markup> - SpanEditHandler;Accepts:Any
                    Text;[data-foo];
                Equals;[=];
                MarkupTextLiteral - [15..16)::1 - ['] - Gen<Markup> - SpanEditHandler;Accepts:Any
                    SingleQuote;['];
                GenericBlock - [16..20)::4
                    CSharpCodeBlock - [16..20)::4
                        CSharpImplicitExpression - [16..20)::4
                            CSharpTransition - [16..17)::1 - Gen<None> - SpanEditHandler;Accepts:None
                                Transition;[@];
                            CSharpImplicitExpressionBody - [17..20)::3
                                CSharpCodeBlock - [17..20)::3
                                    CSharpExpressionLiteral - [17..20)::3 - [foo] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14
                                        Identifier;[foo];
                MarkupTextLiteral - [20..21)::1 - ['] - Gen<Markup> - SpanEditHandler;Accepts:Any
                    SingleQuote;['];
            MarkupTextLiteral - [21..22)::1 - [>] - Gen<Markup> - SpanEditHandler;Accepts:Any
                CloseAngle;[>];
        MarkupTagBlock - [22..29)::7 - [</span>]
            MarkupTextLiteral - [22..29)::7 - [</span>] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                ForwardSlash;[/];
                Text;[span];
                CloseAngle;[>];
