@property
    def proxy_uri(self):
        for option in self.options:
            if option.number == defines.OptionRegistry.PROXY_URI.number:
                return option.value
        return None
Do nothing.. but send any pending messages and do a resync.. but when
dataset/ETHPy150Open Tanganelli/CoAPthon/coapthon/messages/request.py/Request.proxy_uri--crossover with--dataset/ETHPy150Open scanner/asimap/asimap/client.py/Authenticated.do_noop