anchor.diff:  %% @private
   -spec init([term()]) -> {ok, #state{}}.
   init([]) ->
  -    Filename = io_lib:format("~w", [node()]),
  +    Filename = io_lib:format("~s.csv", [node()]),
       Line = io_lib:format("Type,Seconds,MegaBytes\n", []),
   
       {ok, TRef} = start_timer(),
  
positive.code:             0
      end,
      Map = orddict:store(Type, Current + Size, Map0),
      lager:info("~p", [Map]),
      {reply, ok, State#state{size_per_type=Map}};
  
  handle_call(stop, _From, #state{lines=Lines0, clock=Clock0,
  
negative.code: 
  -spec log(term(), term(), pos_integer(), node()) -> ok | error().
  log(Type, Payload, PeerCount, Node) ->
      gen_server:call(?MODULE, {log, Type, Payload, PeerCount, Node}, infinity).
  
  -spec stop() -> ok | error().
  