public string Transform(Topic current, string data)
{
var ol = new HtmlTag("ol").AddClass("breadcrumb");
current.Ancestors().Each(x =>
{
ol.Add("li/a").Attr("href", _resolver.ToUrl(current, x)).Text(x.Title);
});
ol.Add("li").AddClass("active").Text(current.Title);
return ol.ToString();
}