I would like to display the folders and files found in a given ACC project in my own application.
Compared with ACC docs browser, I only see only “Project Files” at the root.

When I execute the request

https://developer.api.autodesk.com/data/v1/projects/:project_id/folders/:folder_id/contents

I get the expected folder, but I get also much more than I want.
There are folders named Photos, Plans, ProjectTb, checklist_, correspondence-project-, issues- and more.

What is the criteria either in the request or in one of the properties in the response to filter for the visible folder “Project Files” like in ACC Docs browser.