Interface for mocking

[michaellegner]

It would be really nice to have an interface for SbmClient so I can mock it.

[ianbeemsterboerr]

I don't know if this is still relevant for you, but I've added a PR in which this would be fixed

[AntonioKoB]

The interface would be nice indeed. I am doing a wrapper in order to make it testable.
It would be nice to have @ianbeemsterboerr PR fixed and merged / released.

Thanks