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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _handle_streamer_finished(self, index, succeeded, highest_ack):
 """Callback when a streamer finishes processing."""


        self._logger.debug("Rolling back streamer %d after streaming, highest ack from streaming subsystem was %d", index, highest_ack)
        self.acknowledge_streamer(index, highest_ack, False)