public HttpResponseMessage PostProject(Project project)
 {
     try
     {
         return new HttpResponseMessage(HttpStatusCode.Created);
     }
     catch (Exception ex)
     {
         return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, ex);
     }
 }
 public HttpResponseMessage GetCalculateSampleSize(Project project)
 {
     try
     {
         throw new Exception("while calculating sample size");
     }
     catch (Exception ex)
     {
         return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, ex);
     }
 }