public <T extends DiskBacked & MemoryEstimator.HasEstimate> ProgressLoggers addFileSizeAndRam(String name, T thing) {
    return add(() -> {
      long bytes = thing.diskUsageBytes() + thing.estimateMemoryUsageBytes();
      return " " + name + (name.isBlank() ? "" : ": ") + padRight(format.storage(bytes, false), 5);
    });
  }
Adds the total of disk and memory usage of {@code thing}.
planetiler-core/src/main/java/com/onthegomap/planetiler/stats/ProgressLoggers.java