Markup block - Gen<None> - 52 - (0:0,0)
    Tag block - Gen<TagHelper> - 52 - (0:0,0) - p - ptaghelper
        StartTagAndEndTag - <p class="foo">
        class - DoubleQuotes
            Markup span - Gen<Markup> - [foo] - SpanEditHandler;Accepts:Any - (10:0,10) - Tokens:1
                SyntaxKind.Text;[foo];
        SyntaxKind.HtmlTextLiteral - [Hello ] - [15..21) - FullWidth: 6 - Slots: 1
            SyntaxKind.List - [Hello ] - [15..21) - FullWidth: 6 - Slots: 2
                SyntaxKind.Text;[Hello];
                SyntaxKind.Whitespace;[ ];
        Tag block - Gen<TagHelper> - 31 - (21:0,21) - p - ptaghelper
            StartTagAndEndTag - <p style="color:red;"> ... </p>
            style - DoubleQuotes
                Markup span - Gen<Markup> - [color:red;] - SpanEditHandler;Accepts:Any - (31:0,31) - Tokens:1
                    SyntaxKind.Text;[color:red;];
            SyntaxKind.HtmlTextLiteral - [World] - [43..48) - FullWidth: 5 - Slots: 1
                SyntaxKind.Text;[World];
