You import the library, initialise an object and call its method. I think it's fair enough to call that example three lines of code.

The bigger question of course is what do you end up with. Clearly that method call isn't going to actually send an instruction to your bank to debit your account and credit somebody else's. I guess `creditPaymentInitiation` is an object that has can be converted to a properly formatted message that can then be sent to your bank using an external tool?