docs: public void marshall(MssPackage mssPackage, ProtocolMarshaller protocolMarshaller) {
  
          if (mssPackage == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(mssPackage.getEncryption(), ENCRYPTION_BINDING);
              protocolMarshaller.marshall(mssPackage.getManifestWindowSeconds(), MANIFESTWINDOWSECONDS_BINDING);
              protocolMarshaller.marshall(mssPackage.getSegmentDurationSeconds(), SEGMENTDURATIONSECONDS_BINDING);
              protocolMarshaller.marshall(mssPackage.getStreamSelection(), STREAMSELECTION_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }