anchor.diff:  -spec handle_call(term(), {pid(), term()}, #state{}) ->
       {reply, term(), #state{}}.
   
  -handle_call({buffer, {Id, _Type, _Metadata, _Value} = Payload},
  -            _From,
  +%% @private
  +handle_call(Msg, _From, State) ->
  +    _ = lager:warning("Unhandled messages: ~p", [Msg]),
  +    {reply, ok, State}.
  +
  +%% @private
  +-spec handle_cast(term(), #state{}) -> {noreply, #state{}}.
  +
  +handle_cast({buffer, {Id, _Type, _Metadata, _Value} = Payload},
               #state{buffer=Buffer0}=State) ->
       Buffer = case lasp_config:get(broadcast, false) of
           true ->
  
positive.code: 
  -spec buffer(term()) -> ok | error().
  buffer(Payload) ->
      gen_server:call(?MODULE, {buffer, Payload}, infinity).
  
  %%%===================================================================
  %%% gen_server callbacks
  
negative.code:             Buffer0
      end,
  
      {noreply, State#state{buffer=Buffer}};
  
  handle_cast(Msg, State) ->
      _ = lager:warning("Unhandled messages: ~p", [Msg]),
      {noreply, State}.
  