docs: public void marshall(Settings settings, ProtocolMarshaller protocolMarshaller) {
  
          if (settings == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(settings.getVocabularyName(), VOCABULARYNAME_BINDING);
              protocolMarshaller.marshall(settings.getShowSpeakerLabels(), SHOWSPEAKERLABELS_BINDING);
              protocolMarshaller.marshall(settings.getMaxSpeakerLabels(), MAXSPEAKERLABELS_BINDING);
              protocolMarshaller.marshall(settings.getChannelIdentification(), CHANNELIDENTIFICATION_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }