public TransactionalOutboxService enable() {
        this.outboxActive = true;
        return this;
    }
Enable the outbox. Any events received whilst will <strong>will</strong> be inserted.
<p>
The outbox is enabled by default.
manager/api/jpa/src/main/java/io/apiman/manager/api/jpa/model/outbox/TransactionalOutboxService.java