Event with "objectType": "core.user_auth.session_created_using_token"

Hi,
Looking at https://developer.okta.com/docs/api/resources/events.html I find no description for an event type core.user_auth.session_created_using_token. Is this event an a result of a token based authentication from the mobile app and if so why I don’t get this (or any) event for token based authentication via REST?
Thanks,
Uri