public void setRoleArn(String roleArn) {
        this.roleArn = roleArn;
    }
<p>
The ARN of the IAM role that has access to the target SNS topic.
</p>

@param roleArn
       The ARN of the IAM role that has access to the target SNS topic.
aws-java-sdk-lookoutmetrics/src/main/java/com/amazonaws/services/lookoutmetrics/model/SNSConfiguration.java