public void setAddonSubscriptionId(String addonSubscriptionId) {
        this.addonSubscriptionId = addonSubscriptionId;
    }
<p>
The unique ID of a previously created subscription that an Add On instance is created for. You can only have one
instance per subscription.
</p>

@param addonSubscriptionId
       The unique ID of a previously created subscription that an Add On instance is created for. You can only
       have one instance per subscription.
aws-java-sdk-mailmanager/src/main/java/com/amazonaws/services/mailmanager/model/CreateAddonInstanceRequest.java