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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 join(self, *args, **kwargs):
 """Joins the thread. Args: self (ThreadReturn):
 the ``ThreadReturn`` instance args: optional list of arguments kwargs: optional key-word arguments Returns: The return value of the exited thread. """

        super(ThreadReturn, self).join(*args, **kwargs)
        return self._return