def ack(self, device_uuid, ack_keys):
attributes = {'<STR_LIT>': ack_keys}<EOL>status_code, _, _ = self.http_client.post('<STR_LIT>',<EOL>body=attributes,<EOL>headers=self.build_headers(device_uuid))<EOL>return status_code == <NUM_LIT><EOL>
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