def delete_group(self, group):
        raise NotImplementedError
Starts 'count' instances in Google Compute Engine, and returns once they
dataset/ETHPy150Open mathcamp/pypicloud/pypicloud/access/base.py/IMutableAccessBackend.delete_group--crossover with--dataset/ETHPy150Open AppScale/appscale-tools/lib/agents/gce_agent.py/GCEAgent.run_instances