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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 release(self):
 """ New implementation to free up Redis subscriptions when websockets close. This prevents memory sap when Redis Output Buffer and Output Lists build when websockets are abandoned. """

        if self._subscription and self._subscription.subscribed:
            self._subscription.unsubscribe()
            self._subscription.reset()