code: def refresh_maps(self):
          
          for robot in self.robots:
              resp2 = (
                  requests.get(urljoin(self.ENDPOINT, 'users/me/robots/{}/maps'.format(robot.serial)),
                               headers=self._headers))
              resp2.raise_for_status()
              self._maps.update({robot.serial: resp2.json()})
docs: Get information about maps of the robots.
  
          :return: