document example unit test transform code workflow

- expose unit test transform function

For external user:
- create object with name, code function
- run transform that will output code function changed into human readable format. Might need unit testing framework name

Start by locating the transform function and the existing example API documentation in the repository. Clarify how an external user should create the named object, provide its code function, and run the transform; done means that workflow is documented and produces a human-readable result, including the unit-testing framework guidance if needed.

Written by the indexing model from the issue text.