public void setArn(String arn) {
        this.arn = arn;
    }
<p>
Specifies the unique Amazon Resource Name (ARN) for the workflow.
</p>

@param arn
       Specifies the unique Amazon Resource Name (ARN) for the workflow.
aws-java-sdk-transfer/src/main/java/com/amazonaws/services/transfer/model/DescribedWorkflow.java