private bool StopPurging([NotNullWhen(true)] out string?stopReason, [NotNullWhen(false)] out IQuotaRule?rule) => _quotaKeeper.StopPurging(out stopReason, out rule);
private bool StopPurging(out string stopReason, out IQuotaRule rule) => _quotaKeeper.StopPurging(out stopReason, out rule);