public void setIamRoleArn(String iamRoleArn) {
        this.iamRoleArn = iamRoleArn;
    }
<p>
The new IAM role ARN.
</p>

@param iamRoleArn
       The new IAM role ARN.
aws-java-sdk-cloudhsm/src/main/java/com/amazonaws/services/cloudhsm/model/ModifyHsmRequest.java