code: protected final Buckets createBuckets(Stopwatch stopwatch) {
  		if (stopwatch.getCounter() > warmupCounter) {
  			Buckets buckets = createBucketsAfterWarmup(stopwatch);
  			// Add retained splits to buckets
  			buckets.addValues(getBucketsValues(stopwatch));
  			removeBucketsValues(stopwatch);
  			return buckets;
  		} else {
  			return null;
  		}
  	}
docs: When warmup ends, buckets are create and retained splits are sorted in the buckets.