private void storeBuilderStatistics(Builder builder, long elapsedTime, int processedFiles) {
    myElapsedTimeNanosByBuilder.computeIfAbsent(builder, b -> new AtomicLong()).addAndGet(elapsedTime);
    myNumberOfSourcesProcessedByBuilder.computeIfAbsent(builder, b -> new AtomicInteger()).addAndGet(processedFiles);
  }
private void storeBuilderStatistics(Builder builder, long elapsedTime, int processedFiles)