public CreateRoomResult withArn(String arn) {
        setArn(arn);
        return this;
    }
<p>
Room ARN, assigned by the system.
</p>

@param arn
       Room ARN, assigned by the system.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ivschat/src/main/java/com/amazonaws/services/ivschat/model/CreateRoomResult.java