RazorDocument - [0..18)::18 - [<span foo='@ @' />]
    MarkupBlock - [0..18)::18
        MarkupTagBlock - [0..18)::18 - [<span foo='@ @' />]
            MarkupTextLiteral - [0..5)::5 - [<span] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                Text;[span];
            MarkupAttributeBlock - [5..15)::10 - [ foo='@ @']
                MarkupTextLiteral - [5..6)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
                    Whitespace;[ ];
                MarkupTextLiteral - [6..9)::3 - [foo] - Gen<Markup> - SpanEditHandler;Accepts:Any
                    Text;[foo];
                Equals;[=];
                MarkupTextLiteral - [10..11)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
                    SingleQuote;['];
                GenericBlock - [11..14)::3
                    MarkupDynamicAttributeValue - [11..12)::1 - [@]
                        GenericBlock - [11..12)::1
                            CSharpCodeBlock - [11..12)::1
                                CSharpImplicitExpression - [11..12)::1
                                    CSharpTransition - [11..12)::1 - Gen<None> - SpanEditHandler;Accepts:None
                                        Transition;[@];
                                    CSharpImplicitExpressionBody - [12..12)::0
                                        CSharpCodeBlock - [12..12)::0
                                            CSharpExpressionLiteral - [12..12)::0 - [] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14
                                                Marker;[];
                    MarkupDynamicAttributeValue - [12..14)::2 - [ @]
                        MarkupTextLiteral - [12..13)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
                            Whitespace;[ ];
                        GenericBlock - [13..14)::1
                            CSharpCodeBlock - [13..14)::1
                                CSharpImplicitExpression - [13..14)::1
                                    CSharpTransition - [13..14)::1 - Gen<None> - SpanEditHandler;Accepts:None
                                        Transition;[@];
                                    CSharpImplicitExpressionBody - [14..14)::0
                                        CSharpCodeBlock - [14..14)::0
                                            CSharpExpressionLiteral - [14..14)::0 - [] - Gen<Expr> - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14
                                                Marker;[];
                MarkupTextLiteral - [14..15)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
                    SingleQuote;['];
            MarkupTextLiteral - [15..18)::3 - [ />] - Gen<Markup> - SpanEditHandler;Accepts:Any
                Whitespace;[ ];
                ForwardSlash;[/];
                CloseAngle;[>];
