[berkes]

I'll usually even add another guard: only add them if the library uses non-domain language.

For example, so that you can say "chargeCard(payment)" in your domain and app, Instead of having to do things like "openAnonCustomer(payment.customerId) && pmt= addPayment(payment.amount, payment.currency) && bookPayment(pmt)" or whatever weird language, order, or transaction boundaries a library uses.

[dundarious]

Yes, wrap a useful "flow" for your application, rather than functions. Often I find there is just one flow for a dependency.