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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 loadZone(self, zone, callback=None, errback=None):
 """ Load an existing zone into a high level Zone object. :param str zone: zone name, like 'example.com' :rtype: :py:class:`ns1.zones.Zone` """

        import ns1.zones
        zone = ns1.zones.Zone(self.config, zone)
        return zone.load(callback=callback, errback=errback)