code: def prepare_for_sending(self):
          
          if [arbiter_link for arbiter_link in self.arbiters if arbiter_link.spare]:
              logger.info('Serializing the configuration for my spare arbiter...')
  
              # Now serialize the whole configuration, for sending to spare arbiters
              self.spare_arbiter_conf = serialize(self)
docs: The configuration needs to be serialized before being sent to a spare arbiter
  
          :return: None