<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _config_convert_to_address_helper(self) -> None: """ converts the config from ports to zmq ip addresses Operates on `self.config` using `self._socket_factory.to_address` """

        to_address = self._socket_factory.to_address
        for k, v in self.config.items():
            if k == 'chatter_subscription_port':
                continue
            if k.endswith('port'):
                self.config[k] = to_address(v)