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: 
  -spec log(term(), term(), pos_integer(), node()) -> ok | error().
  log(Type, Payload, PeerCount, Node) ->
      lager:info("lasp_transmission_instrumentation:log"),
      gen_server:call(?MODULE, {log, Type, Payload, PeerCount, Node}, infinity).
  
  -spec stop() -> ok | error().
  
negative.code:         Lines0,
          Map
      ),
      ok = file:write_file(filename(Filename), Lines),
      {ok, Clock, Lines}.
  
  