@TestOnly
  void waitForFilesQueuedForInvalidationAreProcessed() {
    try {
      invalidateFileQueue.waitForAllExecuted(1, TimeUnit.MINUTES);
    }
    catch (TimeoutException e) {
      throw new RuntimeException(e);
    }
  }
@TestOnly
  void waitForFilesQueuedForInvalidationAreProcessed()