public void setRoleArn(String roleArn) {
        this.roleArn = roleArn;
    }
<p>
The ARN of an IAM role that gives Amazon Rekognition publishing permissions to the Amazon SNS topic.
</p>

@param roleArn
       The ARN of an IAM role that gives Amazon Rekognition publishing permissions to the Amazon SNS topic.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/NotificationChannel.java