public HtmlDocument get_doughnut_cached()
        {
            _writer.AppendHeader(HttpResponseHeader.ETag, Guid.NewGuid().ToString());

            var html = _partials.Invoke <DateRequest>();

            _document.Add(new LiteralTag(html));

            return(_document);
        }
 public Task <string> get_multiplepartialresult()
 {
     return(_invoker.Invoke <PartialInput>());
 }