Markup block - Gen<None> - 47 - (0:0,0)
    Tag block - Gen<TagHelper> - 47 - (0:0,0) - th:myth - mythTagHelper
        StartTagAndEndTag - <th:myth class="btn"> ... </th:myth>
        class - DoubleQuotes
            Markup span - Gen<Markup> - [btn] - SpanEditHandler;Accepts:Any - (16:0,16) - Tokens:1
                SyntaxKind.Text;[btn];
        SyntaxKind.HtmlTextLiteral - [words and spaces] - [21..37) - FullWidth: 16 - Slots: 1
            SyntaxKind.List - [words and spaces] - [21..37) - FullWidth: 16 - Slots: 5
                SyntaxKind.Text;[words];
                SyntaxKind.Whitespace;[ ];
                SyntaxKind.Text;[and];
                SyntaxKind.Whitespace;[ ];
                SyntaxKind.Text;[spaces];
