code: public void marshall(Backup backup, ProtocolMarshaller protocolMarshaller) {
  
          if (backup == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(backup.getBackupId(), BACKUPID_BINDING);
              protocolMarshaller.marshall(backup.getLifecycle(), LIFECYCLE_BINDING);
              protocolMarshaller.marshall(backup.getFailureDetails(), FAILUREDETAILS_BINDING);
              protocolMarshaller.marshall(backup.getType(), TYPE_BINDING);
              protocolMarshaller.marshall(backup.getProgressPercent(), PROGRESSPERCENT_BINDING);
              protocolMarshaller.marshall(backup.getCreationTime(), CREATIONTIME_BINDING);
              protocolMarshaller.marshall(backup.getKmsKeyId(), KMSKEYID_BINDING);
              protocolMarshaller.marshall(backup.getResourceARN(), RESOURCEARN_BINDING);
              protocolMarshaller.marshall(backup.getTags(), TAGS_BINDING);
              protocolMarshaller.marshall(backup.getFileSystem(), FILESYSTEM_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.