def stop_server(self):
        self.server.terminate()
        self.server.join()
If provided a `token` parameter, tries to retrieve a stored
dataset/ETHPy150Open maxpumperla/elephas/elephas/spark_model.py/SparkModel.stop_server--crossover with--dataset/ETHPy150Open litl/rauth/rauth/service.py/OAuth1Service.get_session