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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 end_segment(self, end_time=None):
 """ End the current segment and send it to X-Ray daemon if it is ready to send. Ready means segment and all its subsegments are closed. :param float end_time: segment compeletion in unix epoch in seconds. """

        self.context.end_segment(end_time)
        segment = self.current_segment()
        if segment and segment.ready_to_send():
            self._send_segment()