public void setAddonInstanceArn(String addonInstanceArn) {
        this.addonInstanceArn = addonInstanceArn;
    }
<p>
The Amazon Resource Name (ARN) of the Add On instance.
</p>

@param addonInstanceArn
       The Amazon Resource Name (ARN) of the Add On instance.
aws-java-sdk-mailmanager/src/main/java/com/amazonaws/services/mailmanager/model/GetAddonInstanceResult.java