def realm(self, id):
        #return opus.lib.prov.Realm(...)
        raise NotImplementedError()
Capture the output of sys.stderr:
dataset/ETHPy150Open bmbouter/Opus/opus/lib/prov/driver_base.py/DriverBase.realm--crossover with--dataset/ETHPy150Open numba/numba/numba/tests/support.py/captured_stderr