gentelella/vendors/select2/docs/_includes/options/events/internal.html

<section>
  <h2 id="events-internal">
    Internal Select2 events
  </h2>
  
  <p>
    Select2 has an internal event system that works independently of the DOM event system. This internal event system is only accesssible from plugins and adapters that are connected to Select2.
  </p>
</section>