anchor.diff:          _ ->
               {error, ?ERROR_COULD_MATCH}
       end.
  +
  +handle_call(_,_,_) ->
  +    ok.
   
   
   %%--------------------------------------------------------------------
  
positive.code:     ?QUEUE_ID_SYNC_OBJ_WITH_DC;
  queue_id(?QUEUE_TYPE_COMP_META_WITH_DC) ->
      ?QUEUE_ID_COMP_META_WITH_DC.
  
  
negative.code: -spec(publish(queue_type(), atom()) ->
               ok).
  publish(?QUEUE_TYPE_RECOVERY_NODE = Id, Node) ->
      KeyBin = term_to_binary(Node),
      MsgBin = term_to_binary(
                 #recovery_node_message{id        = leo_date:clock(),
                                        node      = Node,
                                        timestamp = leo_date:now()}),
      leo_mq_api:publish(queue_id(Id), KeyBin, MsgBin);
  publish(_,_) ->
      {error, badarg}.
  
  