public ActionResult <string> GetById(int id, [FromQuery] string include)
        {
            var customer = new CustomerStorage(_config);

            if (include == "products")
            {
                return(Ok(customer.GetCustomerProducts(id, include)));
            }

            else if (include == "payments")
            {
                return(Ok(customer.GetCustomerPaymentTypes(id, include)));
            }

            else
            {
                return(Ok(customer.GetById(id)));
            }
        }