public ActionResult DownloadDatasetInstanceSpreadsheet(long datasetInstanceId)
        {
            var model = _artefactService.CreateDatasetInstanceForDownload(datasetInstanceId);

            return(File(string.Format("{0}{1}", model.Path, model.FileName), "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", model.FileName));
        }