private void AddPaymentMethod(DataRow row)
        {
            string methodCode = row["PaymentMethodType"].ToString();
            LoadPaymentMethodOperation operation = new LoadPaymentMethodOperation(employee, methodCode, connection);

            operation.Execute();
            employee.Method = operation.Method;
        }
        public void LoadHoldMethod()
        {
            operation = new LoadPaymentMethodOperation(
                employee, "hold", null);
            operation.Execute();
            var method = operation.Method;

            Assert.IsTrue(method is HoldMethod);
        }