API - Webinars - List webinar participants

This is about, Zoom API - Webimars - > List webinar participants. (https://marketplace.zoom.us/docs/api-reference/zoom-api/webinars/listwebinarparticipants).  I would like to know when was this particular API added in the API section.  We use the API to generate post webinar reports and this API was not available couple of months ago  (or even few days ago), the List of participants was only available under Zoom API - Dashboards  - Get webinar participants for a Business, Education, or API Plan with Webinar add-on. I will be much oblige, If you can  provide us with the exact date on which "List webinar participants was added under "Zoom API - Webinars (to Pro users).