RazorDocument - [0..19)::19 - [{<span foo='@@' />}]
    MarkupBlock - [0..19)::19
        MarkupTextLiteral - [0..1)::1 - [{] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Text;[{];
        MarkupElement - [1..18)::17
            MarkupStartTag - [1..18)::17 - [<span foo='@@' />] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                Text;[span];
                MarkupAttributeBlock - [6..15)::9 - [ foo='@@']
                    MarkupTextLiteral - [6..7)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        Whitespace;[ ];
                    MarkupTextLiteral - [7..10)::3 - [foo] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        Text;[foo];
                    Equals;[=];
                    MarkupTextLiteral - [11..12)::1 - ['] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        SingleQuote;['];
                    GenericBlock - [12..14)::2
                        MarkupBlock - [12..14)::2
                            MarkupTextLiteral - [12..13)::1 - [@] - Gen<LitAttr:@(12:0,12)> - SpanEditHandler;Accepts:None
                                Transition;[@];
                            MarkupEphemeralTextLiteral - [13..14)::1 - [@] - Gen<None> - SpanEditHandler;Accepts:None
                                Transition;[@];
                    MarkupTextLiteral - [14..15)::1 - ['] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        SingleQuote;['];
                MarkupMiscAttributeContent - [15..16)::1
                    MarkupTextLiteral - [15..16)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        Whitespace;[ ];
                ForwardSlash;[/];
                CloseAngle;[>];
        MarkupTextLiteral - [18..19)::1 - [}] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Text;[}];
    EndOfFile;[];
