anchor.diff:  -spec multicast_unregister(Name :: any()) -> pid().
   multicast_unregister(Name) ->
       spawn_link(fun() ->
  -        rpc:eval_everywhere(nodes(), ?MODULE, remove_from_local_table, [Name])
  +        lists:foreach(fun(RemoteNode) ->
  +            remove_remote_from_local_table(RemoteNode, Name)
  +        end, nodes())
       end).
   
   -spec register_on_node(Name :: any(), Pid :: pid(), Meta :: any()) -> ok.
  
positive.code:                 end
              )
      end,
      %% return
      {noreply, State};
  
  
negative.code: 
  %% sync API
  -export([sync_get_local_registry_tuples/1]).
  -export([add_remote_to_local_table/4, remove_remote_from_local_table/2]).
  -export([add_to_local_table/4, remove_from_local_table/1]).
  
  %% gen_server callbacks
  