code: public void marshall(TargetTrackingConfiguration targetTrackingConfiguration, ProtocolMarshaller protocolMarshaller) {
  
          if (targetTrackingConfiguration == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(targetTrackingConfiguration.getPredefinedScalingMetricSpecification(), PREDEFINEDSCALINGMETRICSPECIFICATION_BINDING);
              protocolMarshaller.marshall(targetTrackingConfiguration.getCustomizedScalingMetricSpecification(), CUSTOMIZEDSCALINGMETRICSPECIFICATION_BINDING);
              protocolMarshaller.marshall(targetTrackingConfiguration.getTargetValue(), TARGETVALUE_BINDING);
              protocolMarshaller.marshall(targetTrackingConfiguration.getDisableScaleIn(), DISABLESCALEIN_BINDING);
              protocolMarshaller.marshall(targetTrackingConfiguration.getScaleOutCooldown(), SCALEOUTCOOLDOWN_BINDING);
              protocolMarshaller.marshall(targetTrackingConfiguration.getScaleInCooldown(), SCALEINCOOLDOWN_BINDING);
              protocolMarshaller.marshall(targetTrackingConfiguration.getEstimatedInstanceWarmup(), ESTIMATEDINSTANCEWARMUP_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.