def on_send(self, frame):
        pass
https://familysearch.org/developers/docs/api/users/Agent_resource
dataset/ETHPy150Open jasonrbriggs/stomp.py/stomp/listener.py/ConnectionListener.on_send--crossover with--dataset/ETHPy150Open AmEv7Fam/familysearch-python-sdk-opensource/familysearch/user.py/User.agent