def key(self, *path_args, **kwargs):
        if 'project' in kwargs:
            raise TypeError('Cannot pass project')
        kwargs['project'] = self.project
        if 'namespace' not in kwargs:
            kwargs['namespace'] = self.namespace
        return Key(*path_args, **kwargs)
Proxy to :class:`gcloud.datastore.key.Key`.
dataset/ETHPy150Open GoogleCloudPlatform/gcloud-python/gcloud/datastore/client.py/Client.key