How do i set a booking to Paid via REST API?

Im using the Orders and Payment API to have a customer purchase an Service Appointment. Now im having the customer book the appointment but I cant find how to set that appointment as paid so that the POS shows it as paid.

:wave: At this time the ability to pay for a booking using the APIs isn’t available. This is a very popular feature request and we hope to have more for you soon. :slightly_smiling_face: