Markup block - Gen<None> - 12 - (0:0,0)
    Tag block - Gen<None> - 7 - (0:0,0)
        Markup span - Gen<Markup> - [<input ] - SpanEditHandler;Accepts:Any - (0:0,0) - Tokens:3
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.Text;[input];
            HtmlTokenType.WhiteSpace;[ ];
    Tag block - Gen<TagHelper> - 5 - (7:0,7) - p - ptaghelper
        SelfClosing - <p />
