public void setOutpostArn(String outpostArn) {
        this.outpostArn = outpostArn;
    }
<p>
The Amazon Resource Name (ARN) of the Outpost where the cluster is launched.
</p>

@param outpostArn
       The Amazon Resource Name (ARN) of the Outpost where the cluster is launched.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/Cluster.java