Why do you think they're using log4j to any significant extent? I'd be a bit surprised if they ever did rather than rolling their own, because for something thi

Why do you think they're using log4j to any significant extent? I'd be a bit surprised if they ever did rather than rolling their own, because for something this simple the cost of writing your own is far cheaper than dealing with a dependency. We're not talking about Linux or Clang here... In particular, from https://github.com/google/flogger#yet-another-logging-api https://github.com/google/flogger#yet-another-logging-api: > Flogger is now the sole recommended Java logging API within Google.