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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 _process_incoming_data(self):
 """Retrieve and process any incoming data. :return: """

        while self._running.is_set():
            if self.poller.is_ready:
                self.data_in += self._receive()
                self.data_in = self._on_read_impl(self.data_in)