public void setTargetTrackingConfigurations(java.util.Collection<TargetTrackingConfiguration> targetTrackingConfigurations) {
        if (targetTrackingConfigurations == null) {
            this.targetTrackingConfigurations = null;
            return;
        }

        this.targetTrackingConfigurations = new java.util.ArrayList<TargetTrackingConfiguration>(targetTrackingConfigurations);
    }
<p>
The target tracking configurations (up to 10). Each of these structures must specify a unique scaling metric and
a target value for the metric.
</p>

@param targetTrackingConfigurations
       The target tracking configurations (up to 10). Each of these structures must specify a unique scaling
       metric and a target value for the metric.
aws-java-sdk-autoscalingplans/src/main/java/com/amazonaws/services/autoscalingplans/model/ScalingInstruction.java