Agent Availability Events on ZAF SDK

Hello
 

We need to react to agent availability events on a Zendesk App using ZAF client, we followed the documentation and could't find these events.
Can you please tell us how to do it?

How we handling events:

https://developer.zendesk.com/api-reference/apps/apps-core-api/client_api/#clientonname-handler-context

var client = ZAFClient.init();
client.on('app.registered', function(e) {
  // go nuts
});

The events we want to handle:

https://developer.zendesk.com/api-reference/webhooks/event-types/agent-availability-events/

Thank you!
Jorge