public void addMeter(String name, Metered meter) {
   final Long deltaCount = deltaTracker.getDelta(name, meter.getCount());
   maybeAdd(COUNT, name, deltaCount);
   maybeAdd(RATE_MEAN, name, convertRate(meter.getMeanRate()));
   maybeAdd(RATE_1_MINUTE, name, convertRate(meter.getOneMinuteRate()));
   maybeAdd(RATE_5_MINUTE, name, convertRate(meter.getFiveMinuteRate()));
   maybeAdd(RATE_15_MINUTE, name, convertRate(meter.getFifteenMinuteRate()));
 }
 public void addHistogram(String name, Histogram histogram) {
   final Long countDelta = deltaTracker.getDelta(name, histogram.getCount());
   maybeAdd(COUNT, name, countDelta);
   final boolean convertDurations = false;
   addSampling(name, histogram, convertDurations);
 }