code: def _statsd_address(self):
          
          return (self.application.settings.get('statsd',
                                                {}).get('host',
                                                        self.STATSD_HOST),
                  self.application.settings.get('statsd',
                                                {}).get('port',
                                                        self.STATSD_PORT))
docs: Return a tuple of host and port for the statsd server to send
          stats to.
  
          :return: tuple(host, port)