anchor.diff:  
       exometer_init(T, Interval).
   
  +%
  +% allow changing report interval live
  +%
  +-spec exometer_set_interval(integer()) -> ok.
  +exometer_set_interval(Time) ->
  +    exometer_report:set_interval(exometer_report_statsd, config_interval, Time),
  +    ok.
  +
   
   -ifdef(DEBUG).
   debug_cleanup() ->
  
positive.code: % automatically subscribe to metrics (sent to statsd)
  %
  exometer_init() ->
      {ok, Interval} = application:get_env(exometer,interval),
      exometer_init(exometer:get_values(['_']), Interval),
      ok.
  
  exometer_init([], _) ->
  
negative.code: -behaviour(application).
  
  %% Application callbacks
  -export([start/0, start/2, stop/1, loglevel/1, env/1, exometer_set_interval/1]).
  
  -define(DEBUGW(X), ok).
  -ifdef(DEBUG).
  