docs: 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.getBackupState(), BACKUPSTATE_BINDING);
              protocolMarshaller.marshall(backup.getClusterId(), CLUSTERID_BINDING);
              protocolMarshaller.marshall(backup.getCreateTimestamp(), CREATETIMESTAMP_BINDING);
              protocolMarshaller.marshall(backup.getCopyTimestamp(), COPYTIMESTAMP_BINDING);
              protocolMarshaller.marshall(backup.getSourceRegion(), SOURCEREGION_BINDING);
              protocolMarshaller.marshall(backup.getSourceBackup(), SOURCEBACKUP_BINDING);
              protocolMarshaller.marshall(backup.getSourceCluster(), SOURCECLUSTER_BINDING);
              protocolMarshaller.marshall(backup.getDeleteTimestamp(), DELETETIMESTAMP_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }