code: def ack(self, device_uuid, ack_keys):
          
  
          attributes = {'ack_keys': ack_keys}
          status_code, _, _ = self.http_client.post('/sync/ack',
                                                    body=attributes,
                                                    headers=self.build_headers(device_uuid))
  
          return status_code == 202
docs: Acknowledge received data
  
          Send acknowledgement keys to let know the Sync service which data you have.
          As you fetch new data, you need to send acknowledgement keys.
  
          :calls: ``post /sync/ack``
          :param string device_uuid: Device's UUID for which to perform synchronization.
          :param list ack_keys: List of acknowledgement keys.
          :return: True if the operation succeeded.
          :rtype: bool