@APIParamsCall
    def create_external_segment(self, body=None):
        return self.post(self.external_segments_path, body=body)
Return rows in `a` that are also in `b`. E.g.::
dataset/ETHPy150Open openstack/python-group-based-policy-client/gbpclient/v2_0/client.py/Client.create_external_segment--crossover with--dataset/ETHPy150Open alimanfoo/petl/petl/transform/setops.py/intersection