class FunctionStatsManager {

  public FunctionServiceStats getFunctionServiceStats() {
    return functionServiceStats;
  }

  public  FunctionStatsManager(boolean statsDisabled, StatisticsFactory statisticsFactory,
      Supplier<MeterRegistry> meterRegistrySupplier);
  @VisibleForTesting  FunctionStatsManager(boolean statsDisabled, StatisticsFactory statisticsFactory,
      FunctionServiceStats functionServiceStats, Supplier<MeterRegistry> meterRegistrySupplier);

}