REST API Get Direct Purchase Order for a Work Order

Summary:

Is there a REST API to get the direct purchase orders for a work order, or get the work order/operation details for a purchase order?

Content (please ensure you mask any confidential information):

Is there a REST API to get the direct purchase orders for a work order, or get the work order/operation details for a purchase order?

That is, enter work order number (or work order id) and get all purchase orders, or enter purchase order (or header ID) and get the related work order.

I know there is no ability to create direct purchase orders through REST API - see linked Idea - so I'm guessing there is not API to get either.