def add_listener(self, listener):
        self._listeners.append(listener)
Fetch and return a list of datapoints in a given timerange.
dataset/ETHPy150Open pinterest/kingpin/kingpin/tests/kazoo_utils/mock_kazoo_client.py/MockKazooClient.add_listener--crossover with--dataset/ETHPy150Open xively/xively-python/xively/managers.py/DatapointsManager.history