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