code: public void marshall(TargetTrackingScalingPolicyConfiguration targetTrackingScalingPolicyConfiguration, ProtocolMarshaller protocolMarshaller) {
  
          if (targetTrackingScalingPolicyConfiguration == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(targetTrackingScalingPolicyConfiguration.getTargetValue(), TARGETVALUE_BINDING);
              protocolMarshaller.marshall(targetTrackingScalingPolicyConfiguration.getPredefinedMetricSpecification(), PREDEFINEDMETRICSPECIFICATION_BINDING);
              protocolMarshaller.marshall(targetTrackingScalingPolicyConfiguration.getCustomizedMetricSpecification(), CUSTOMIZEDMETRICSPECIFICATION_BINDING);
              protocolMarshaller.marshall(targetTrackingScalingPolicyConfiguration.getScaleOutCooldown(), SCALEOUTCOOLDOWN_BINDING);
              protocolMarshaller.marshall(targetTrackingScalingPolicyConfiguration.getScaleInCooldown(), SCALEINCOOLDOWN_BINDING);
              protocolMarshaller.marshall(targetTrackingScalingPolicyConfiguration.getDisableScaleIn(), DISABLESCALEIN_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.