Reporting-Services-LoadTest project for PBIRS

The MS provided Reporting load test project here;

https://github.com/microsoft/Reporting-Services-LoadTest

looks like it is supposed to work with on-prem PBIRS. I can configure a new .pbix report and the test run uploads the report correctly to the on-prem PBIRS server. However, when it tries to get the modelid etc. from the report via the REST API, it fails. It seems that it is using a strange url for the this, like:

http://<server>/Reports/api/v2.0/c360b18d-910d-456e-b4e4-6eaddd46dc65/modelsAndExploration

other examples I've seen use:

http://<server>/Reports/api/v2.0/explore/reports/ .../modelsAndExplorarion

none of these seem to correspond to the API for PBIRS. This endpoint name "modelsandExploration" doesn't exist also can't find equivalents that would provide the modelid. Since this project was from 2017, was the PBIRS REST api different back then? Is there some way to update these URLS?