public void setClusterArn(String clusterArn) {
        this.clusterArn = clusterArn;
    }
<p>
The ARN identifier of the elastic cluster.
</p>

@param clusterArn
       The ARN identifier of the elastic cluster.
aws-java-sdk-docdbelastic/src/main/java/com/amazonaws/services/docdbelastic/model/Cluster.java