public ProjectDescription withArn(String arn) {
        setArn(arn);
        return this;
    }
<p>
The ARN of the project.
</p>

@param arn
       The ARN of the project.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-iot1clickprojects/src/main/java/com/amazonaws/services/iot1clickprojects/model/ProjectDescription.java