public IHttpActionResult Delete(int id)
 {
     try
     {
         var result = _expenseTrackerRepository.DeleteExpenseGroup(id);
         if (result.Status == RepositoryActionStatus.Deleted)
         {
             return(StatusCode(HttpStatusCode.NoContent));
         }
         else if (result.Status == RepositoryActionStatus.NotFound)
         {
             return(NotFound());
         }
         return(BadRequest());
     }
     catch (Exception)
     {
         return(InternalServerError());
     }
 }