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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 usage(self, callback=None, errback=None, **kwargs):
 """ Return the current usage information for this zone :rtype: dict :return: usage information """

        stats = Stats(self.config)
        return stats.usage(zone=self.zone, callback=callback, errback=errback,
                           **kwargs)