Ola Rønning

Is the codebase with operator VI publicly available? I've been looking, but couldn't find it.

A guard makes sense. I'll give an implementation a shot.

@SarthakNikhal absolutely. Feel free to look at my WIP PR. I wrote the unittest relatively fast; you can probably develop a more suitable one.

I would make the test cover four cases: 1. return_deterministic is true and no return_sites. returned samples should include all deterministic sites in the guide. 2. return_deterministic is true and...

If the two are that tightly interlinked, then you should have a runtime check that you have a flowstep instance.