Markup block - Gen<None> - 24 - (0:0,0)
    Tag block - Gen<TagHelper> - 24 - (0:0,0) - strong - catchAllTagHelper
        SelfClosing - <strong catchAll="hi" />
        catchAll - DoubleQuotes
            Markup span - Gen<Markup> - [hi] - SpanEditHandler;Accepts:Any - (18:0,18) - Tokens:1
                HtmlTokenType.Text;[hi];
