public String getAutoScalingRole() {
        return this.autoScalingRole;
    }
<p>
An IAM role for automatic scaling policies. The default role is <code>EMR_AutoScaling_DefaultRole</code>. The IAM
role provides permissions that the automatic scaling feature requires to launch and terminate Amazon EC2
instances in an instance group.
</p>

@return An IAM role for automatic scaling policies. The default role is <code>EMR_AutoScaling_DefaultRole</code>.
        The IAM role provides permissions that the automatic scaling feature requires to launch and terminate
        Amazon EC2 instances in an instance group.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/Cluster.java