Guessing most of e.g API documentation will still work despite all the depricaion warnings, but isn’t there some official documentation for the flugin somewhere?
as a general rule of thumb, I would recommend to always take a look at the API documentation on your own Foreman instance. You can always find that via https://yourforeman.example.com/apidoc. This page will always include API docs for all your installed plugins and be appropriate for your current version.
