[SharePoint Premium] Lack of the documentation for "SharePoint Premium"(Syntex) Rest Api

What type of issue is this?

Documentation issue / typo

What SharePoint development model, framework, SDK or API is this about?

SharePoint REST API

Target SharePoint environment

SharePoint Online

What browser(s) / client(s) have you tested

• 💥 Internet Explorer
• 💥 Microsoft Edge
• 💥 Google Chrome
• 💥 FireFox
• 💥 Safari
• mobile (iOS/iPadOS)
• mobile (Android)
• not applicable
• other (enter in the "Additional environment details" area below)

Additional environment details

• browser version
• SPFx version
• Node.js version
• etc

Issue description

The current documentation for SharePoint Premium Rest Api (It was called "Syntex" before) are quite old (most of them were updated three years ago) and not completely ( lack of many new features , e.g. AutoFill ).

Then it is inconvenient to use SharePoint Premium features programmatically . For example, I want to deploy my autofill document library from one environment to another via PnP Powershell. I saw my prompt on column has been deployed, but the "Autofill" command doesn't appear, until I manually changed the prompt (I guess this step triggered something)