code: def neighbor_update(self, address, conf_type, conf_value):
          
  
          assert conf_type == MULTI_EXIT_DISC or conf_type == CONNECT_MODE
  
          func_name = 'neighbor.update'
          attribute_param = {}
          if conf_type == MULTI_EXIT_DISC:
              attribute_param = {neighbors.MULTI_EXIT_DISC: conf_value}
          elif conf_type == CONNECT_MODE:
              attribute_param = {neighbors.CONNECT_MODE: conf_value}
  
          param = {neighbors.IP_ADDRESS: address,
                   neighbors.CHANGES: attribute_param}
  
          call(func_name, **param)
docs: This method changes the neighbor configuration.
  
          ``address`` specifies the IP address of the peer.
  
          ``conf_type`` specifies configuration type which you want to change.
          Currently ryu.services.protocols.bgp.bgpspeaker.MULTI_EXIT_DISC
          can be specified.
  
          ``conf_value`` specifies value for the configuration type.