docs: private S3Object decipherWithInstFileSuffix(GetObjectRequest req,
              long[] desiredRange, long[] cryptoRange, S3Object retrieved,
              String instFileSuffix) {
          final S3ObjectId id = req.getS3ObjectId();
          // Check if encrypted info is in an instruction file
          final S3ObjectWrapper ifile = fetchInstructionFile(id, instFileSuffix);
          if (ifile == null) {
              throw new SdkClientException("Instruction file with suffix "
                      + instFileSuffix + " is not found for " + retrieved);
          }
          try {
              return decipherWithInstructionFile(req, desiredRange,
                      cryptoRange, new S3ObjectWrapper(retrieved, id), ifile);
          } finally {
              closeQuietly(ifile, log);
          }
      }