public App withAppArn(String appArn) {
        setAppArn(appArn);
        return this;
    }
<p>
The Amazon Resource Name (ARN) of the Amplify app.
</p>

@param appArn
       The Amazon Resource Name (ARN) of the Amplify app.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-amplify/src/main/java/com/amazonaws/services/amplify/model/App.java