public IHttpActionResult MiUnicoMetodoPago(int id)
 {
     try
     {
         Pago pagos = PagoBLL.GetUnicoPago(id);
         //202
         return(Content(HttpStatusCode.OK, pagos));
     }
     catch (Exception ex)
     {
         //400
         return(BadRequest(ex.Message));
     }
 }