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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 close_transport(self):
 """ Forcibly close previously acquired media transport. .. note:: The user should first make sure any transport event handlers are unregistered first. """

        if (self.path):
            self._release_media_transport(self.path,
                                          self.access_type)
            self.path = None