public java.util.List<String> getInstanceArns() {
        return instanceArns;
    }
<p>
The Amazon Resource Name (ARN) of the instances for which to return recommendations.
</p>

@return The Amazon Resource Name (ARN) of the instances for which to return recommendations.
aws-java-sdk-computeoptimizer/src/main/java/com/amazonaws/services/computeoptimizer/model/GetEC2InstanceRecommendationsRequest.java