docs: public void marshall(StartFaceSearchRequest startFaceSearchRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (startFaceSearchRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(startFaceSearchRequest.getVideo(), VIDEO_BINDING);
              protocolMarshaller.marshall(startFaceSearchRequest.getClientRequestToken(), CLIENTREQUESTTOKEN_BINDING);
              protocolMarshaller.marshall(startFaceSearchRequest.getFaceMatchThreshold(), FACEMATCHTHRESHOLD_BINDING);
              protocolMarshaller.marshall(startFaceSearchRequest.getCollectionId(), COLLECTIONID_BINDING);
              protocolMarshaller.marshall(startFaceSearchRequest.getNotificationChannel(), NOTIFICATIONCHANNEL_BINDING);
              protocolMarshaller.marshall(startFaceSearchRequest.getJobTag(), JOBTAG_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }