docs: public void marshall(ModelPackageSummary modelPackageSummary, ProtocolMarshaller protocolMarshaller) {
  
          if (modelPackageSummary == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(modelPackageSummary.getModelPackageName(), MODELPACKAGENAME_BINDING);
              protocolMarshaller.marshall(modelPackageSummary.getModelPackageArn(), MODELPACKAGEARN_BINDING);
              protocolMarshaller.marshall(modelPackageSummary.getModelPackageDescription(), MODELPACKAGEDESCRIPTION_BINDING);
              protocolMarshaller.marshall(modelPackageSummary.getCreationTime(), CREATIONTIME_BINDING);
              protocolMarshaller.marshall(modelPackageSummary.getModelPackageStatus(), MODELPACKAGESTATUS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }