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
                SyntaxKind.Text;[foo];
        SyntaxKind.HtmlTextLiteral - [Hello] - [15..20) - FullWidth: 5 - Slots: 1
            SyntaxKind.Text;[Hello];
    SyntaxKind.HtmlTextLiteral - [ ] - [24..25) - FullWidth: 1 - Slots: 1
        SyntaxKind.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
                SyntaxKind.Text;[color:red;];
        SyntaxKind.HtmlTextLiteral - [World] - [47..52) - FullWidth: 5 - Slots: 1
            SyntaxKind.Text;[World];
