def serviceReceiveOnce(self):
        if self.server.opened:
            data = self.server.receive()
            if data:
                self.rxbs.extend(data)
change the db_alias and clear the cached collection
dataset/ETHPy150Open ioflo/ioflo/ioflo/aio/serial/serialing.py/Driver.serviceReceiveOnce--crossover with--dataset/ETHPy150Open MongoEngine/mongoengine/mongoengine/context_managers.py/switch_db.__enter__