> Visa and Mastercard have subtly different reason codes for why a chargeback can be initiated, but Stripe combines those codes into a single enum so that their

> Visa and Mastercard have subtly different reason codes for why a chargeback can be initiated, but Stripe combines those codes into a single enum so that their users don’t need to consider the two networks separately. This is indirection, not abstraction. Abstraction raises the semantic level.