Markup block - Gen<None> - 18 - (0:0,0)
    Tag block - Gen<None> - 18 - (0:0,0)
        Markup span - Gen<Markup> - [<span] - SpanEditHandler;Accepts:Any - (0:0,0) - Tokens:2
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.Text;[span];
        Markup block - Gen<Attr:foo, foo='@(5:0,5),'@(14:0,14)> - 10 - (5:0,5)
            Markup span - Gen<None> - [ foo='] - SpanEditHandler;Accepts:Any - (5:0,5) - Tokens:4
                HtmlTokenType.WhiteSpace;[ ];
                HtmlTokenType.Text;[foo];
                HtmlTokenType.Equals;[=];
                HtmlTokenType.SingleQuote;['];
            Markup block - Gen<DynAttr:@(11:0,11)> - 1 - (11:0,11)
                Expression block - Gen<Expr> - 1 - (11:0,11)
                    Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (11:0,11) - Tokens:1
                        CSharpTokenType.Transition;[@];
                    Code span - Gen<Expr> - [] - ImplicitExpressionEditHandler;Accepts:NonWhiteSpace;ImplicitExpression[RTD];K14 - (12:0,12) - Tokens:1
                        CSharpTokenType.Unknown;[];
            Markup block - Gen<DynAttr: @(12:0,12)> - 2 - (12:0,12)
                Markup span - Gen<None> - [ ] - SpanEditHandler;Accepts:Any - (12:0,12) - Tokens:1
                    HtmlTokenType.WhiteSpace;[ ];
                Expression block - Gen<Expr> - 1 - (13:0,13)
                    Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (13:0,13) - Tokens:1
                        CSharpTokenType.Transition;[@];
                    Code span - Gen<Expr> - [] - ImplicitExpressionEditHandler;Accepts:NonWhiteSpace;ImplicitExpression[RTD];K14 - (14:0,14) - Tokens:1
                        CSharpTokenType.Unknown;[];
            Markup span - Gen<None> - ['] - SpanEditHandler;Accepts:Any - (14:0,14) - Tokens:1
                HtmlTokenType.SingleQuote;['];
        Markup span - Gen<Markup> - [ />] - SpanEditHandler;Accepts:Any - (15:0,15) - Tokens:3
            HtmlTokenType.WhiteSpace;[ ];
            HtmlTokenType.ForwardSlash;[/];
            HtmlTokenType.CloseAngle;[>];
