A checklist of cases that I might not thought of. I would group example code around different use case and not around API endpoints. For example Braintree is g

A checklist of cases that I might not thought of. I would group example code around different use case and not around API endpoints. For example Braintree is good in that sense: https://developers.braintreepayments.com/guides/recurring-billing/overview https://developers.braintreepayments.com/guides/recurring-bi... I know it's not a payment gateway's responsibility, but some further handholding on tax and VAT, invoicing issues would be handy.