def group_permissions(self, package, group=None):
        raise NotImplementedError
as in CMA-ES
dataset/ETHPy150Open mathcamp/pypicloud/pypicloud/access/base.py/IAccessBackend.group_permissions--crossover with--dataset/ETHPy150Open pybrain/pybrain/pybrain/optimization/distributionbased/snes.py/SNES._initBatchSize