code: def _add_device_to_device_group(self, device):
          '''Add device to device service cluster group.
  
          :param device: bigip object -- device to add to group
          '''
  
          device_name = get_device_info(device).name
          dg = pollster(self._get_device_group)(device)
          dg.devices_s.devices.create(name=device_name, partition=self.partition)
          pollster(self._check_device_exists_in_device_group)(device_namef _add_device_to_device_group(self, device):
          '''Add device to device service cluster group.
  
          :param device: bigip object -- device to add to group
          '''
  
          device_name = get_device_info(device).name
          dg = pollster(self._get_device_group)(device)
          dg.devices_s.devices.create(name=device_name, partition=self.partition)
          pollster(self._check_device_exists_in_device_group)(device_name)
docs: Add device to device service cluster group.
  
          :param device: bigip object -- device to add to group