Markup block - Gen<None> - 56 - (0:0,0)
    Tag block - Gen<TagHelper> - 24 - (0:0,0) - p - ptaghelper
        StartTagAndEndTag - <p class="foo"> ... </p>
        class - DoubleQuotes
            Markup span - Gen<Markup> - [foo] - SpanEditHandler;Accepts:Any - (10:0,10) - Tokens:1
                HtmlTokenType.Text;[foo];
        Markup span - Gen<Markup> - [Hello] - SpanEditHandler;Accepts:Any - (15:0,15) - Tokens:1
            HtmlTokenType.Text;[Hello];
    Markup span - Gen<Markup> - [ ] - SpanEditHandler;Accepts:Any - (24:0,24) - Tokens:1
        HtmlTokenType.WhiteSpace;[ ];
    Tag block - Gen<TagHelper> - 31 - (25:0,25) - p - ptaghelper
        StartTagAndEndTag - <p style="color:red;"> ... </p>
        style - DoubleQuotes
            Markup span - Gen<Markup> - [color:red;] - SpanEditHandler;Accepts:Any - (35:0,35) - Tokens:1
                HtmlTokenType.Text;[color:red;];
        Markup span - Gen<Markup> - [World] - SpanEditHandler;Accepts:Any - (47:0,47) - Tokens:1
            HtmlTokenType.Text;[World];
