Ability to Listen to Save Events in Word, Excel and PowerPoint

Hi Office-JS team,

There should be a way to execute custom logic when a user saves a document in Word, Excel and PowerPoint using Office Add-ins.

Currently, Office.js does not appear to expose any event or callback for detecting when a document is saved. This limitation prevents us from implementing scenarios like syncing document state with external systems on save or performing other custom actions.

Please provide a way to detect document saving by user and execute custom actions.

Thank you!