docs: private AWSKMSClient newAWSKMSClient(
              AWSCredentialsProvider credentialsProvider,
              ClientConfiguration clientConfig,
              CryptoConfiguration cryptoConfig,
              RequestMetricCollector requestMetricCollector
      ) {
          final AWSKMSClient kmsClient = new AWSKMSClient(
              credentialsProvider, clientConfig, requestMetricCollector);
          final Region kmsRegion = cryptoConfig.getAwsKmsRegion();
          if (kmsRegion != null)
              kmsClient.setRegion(kmsRegion);
          return kmsClient;
      }