@namespace.setter
    def namespace(self, value):
        if not isinstance(value, str):
            raise ValueError("Namespace must be a string")
        self._namespace = value
Restarts instances. May avoid some restarts depending on policy.
dataset/ETHPy150Open GoogleCloudPlatform/gcloud-python/gcloud/datastore/query.py/Query.namespace--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/devappserver2/server.py/Server._maybe_restart_instances