code: def manage_extant(self, **kwargs):
          '''Manage an existing cluster
  
          :param kwargs: dict -- keyword args in dict
          '''
  
          self._check_device_number(kwargs['devices'])
          self.trust_domain = TrustDomain(
              devices=kwargs['devices'],
              partition=kwargs['device_group_partition']
          )
          self.device_group = DeviceGroup(**kwargs)
          self.cluster = Cluster(**kwargsf manage_extant(self, **kwargs):
          '''Manage an existing cluster
  
          :param kwargs: dict -- keyword args in dict
          '''
  
          self._check_device_number(kwargs['devices'])
          self.trust_domain = TrustDomain(
              devices=kwargs['devices'],
              partition=kwargs['device_group_partition']
          )
          self.device_group = DeviceGroup(**kwargs)
          self.cluster = Cluster(**kwargs)
docs: Manage an existing cluster
  
          :param kwargs: dict -- keyword args in dict