code: def notify_slaves(self):
          
          if self.disable_slave_notify is not None:
              LOGGER.debug('Slave notifications disabled')
              return False
  
          if self.zone_data()['kind'] == 'Master':
              response_code = self._put('/zones/' + self.domain + '/notify').status_code
              if response_code == 200:
                  LOGGER.debug('Slave(s) notified')
                  return True
              LOGGER.debug('Slave notification failed with code %i', response_code)
          else:
              LOGGER.debug('Zone type should be \'Master\' for slave notifications')
          return False
docs: Checks to see if slaves should be notified, and notifies them if needed