[NEST Users] Passing options to recording backends via Python

Hello everyone, I am currently working on a custom recording backend based on the nestio branch of this fork: https://github.com/jougs/nest-simulator/. I want the user to be able to customize the behavior of my backend from their python code. I can see that the RecordingBackend class has the virtual functions set_status() and get_status() that would enable such a thing and I see that other recording backends implement them accordingly. However, I haven't found an example yet how to get access to the recording backend to call these functions. Can anyone give me hint on how to do that? Kind regards Simon