Markup block - Gen<None> - 29 - (0:0,0)
    Tag block - Gen<None> - 5 - (0:0,0)
        Markup span - Gen<Markup> - [<foo>] - SpanEditHandler;Accepts:Any - (0:0,0) - Tokens:3
            SyntaxKind.OpenAngle;[<];
            SyntaxKind.Text;[foo];
            SyntaxKind.CloseAngle;[>];
    Markup span - Gen<Markup> - [<![CDATA[ ] - SpanEditHandler;Accepts:Any - (5:0,5) - Tokens:6
        SyntaxKind.OpenAngle;[<];
        SyntaxKind.Bang;[!];
        SyntaxKind.LeftBracket;[[];
        SyntaxKind.Text;[CDATA];
        SyntaxKind.LeftBracket;[[];
        SyntaxKind.Whitespace;[ ];
    Expression block - Gen<Expr> - 4 - (15:0,15)
        Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (15:0,15) - Tokens:1
            SyntaxKind.Transition;[@];
        Code span - Gen<Expr> - [foo] - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14 - (16:0,16) - Tokens:1
            SyntaxKind.Identifier;[foo];
    SyntaxKind.HtmlTextLiteral - [ ]]>] - [19..23) - FullWidth: 4 - Slots: 1
        SyntaxKind.List - [ ]]>] - [19..23) - FullWidth: 4 - Slots: 4
            SyntaxKind.Whitespace;[ ];
            SyntaxKind.RightBracket;[]];
            SyntaxKind.RightBracket;[]];
            SyntaxKind.CloseAngle;[>];
    Tag block - Gen<None> - 6 - (23:0,23)
        Markup span - Gen<Markup> - [</foo>] - SpanEditHandler;Accepts:Any - (23:0,23) - Tokens:4
            SyntaxKind.OpenAngle;[<];
            SyntaxKind.ForwardSlash;[/];
            SyntaxKind.Text;[foo];
            SyntaxKind.CloseAngle;[>];
