About /task-form APIs in the flowable-task UI application

I observe that the flowable-task UI application uses a few APIs like:
POST /task-forms/43/save-form
POST: /task-forms/

to save a form and to link/associate a form to a task id respectively.

These APIs, however, don’t seem to exist in the documentation.

I am trying to simulate the process of retrieving a user task (with a form associated with it) using REST APIs.

I am guessing I could achieve the same with some documented APIs but just not sure which ones to use.

Any help is appreciated.

These are indeed rest api’s internal to the app itself. I don’t believe there is a public API yet that would cover this use case.