Nested rest call

Flowable Engine
1

Hi,

How do we call a nested rest API in flowable engine at runtime?
for example,

when I fire http://server/flowable-rest/service/runtime/process-instances, internally in the engine I would like to fire another custom Rest API. Do we have any utils for this already?
Also how do we pass the http context to the nested rest call?

2

This would be done by using a http task in a process, see https://flowable.org/docs/userguide/index.html#bpmnHttpTask