Markup block - Gen<None> - 29 - (0:0,0)
    Tag block - Gen<None> - 22 - (0:0,0)
        Markup span - Gen<Markup> - [<span] - SpanEditHandler;Accepts:Any - (0:0,0) - Symbols:2
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.Text;[span];
        Markup block - Gen<Attr:data-foo, data-foo='@(5:0,5),'@(20:0,20)> - 16 - (5:0,5)
            Markup span - Gen<None> - [ data-foo='] - SpanEditHandler;Accepts:Any - (5:0,5) - Symbols:4
                HtmlSymbolType.WhiteSpace;[ ];
                HtmlSymbolType.Text;[data-foo];
                HtmlSymbolType.Equals;[=];
                HtmlSymbolType.SingleQuote;['];
            Markup block - Gen<DynAttr:@(16:0,16)> - 4 - (16:0,16)
                Expression block - Gen<Expr> - 4 - (16:0,16)
                    Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (16:0,16) - Symbols:1
                        CSharpSymbolType.Transition;[@];
                    Code span - Gen<Expr> - [foo] - ImplicitExpressionEditHandler;Accepts:NonWhiteSpace;ImplicitExpression[RTD];K14 - (17:0,17) - Symbols:1
                        CSharpSymbolType.Identifier;[foo];
            Markup span - Gen<None> - ['] - SpanEditHandler;Accepts:Any - (20:0,20) - Symbols:1
                HtmlSymbolType.SingleQuote;['];
        Markup span - Gen<Markup> - [>] - SpanEditHandler;Accepts:None - (21:0,21) - Symbols:1
            HtmlSymbolType.CloseAngle;[>];
    Tag block - Gen<None> - 7 - (22:0,22)
        Markup span - Gen<Markup> - [</span>] - SpanEditHandler;Accepts:None - (22:0,22) - Symbols:4
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.ForwardSlash;[/];
            HtmlSymbolType.Text;[span];
            HtmlSymbolType.CloseAngle;[>];
