I added thumbnail fetching to my file provider and it now works great for files that are previewed by Finder / QuickLook like png, jpeg, tiff, ...
The system I am connecting to also handles thumbnailing for file format like Adobe Indesign / Illustrator but the file provider doesn't seem to call fetchThumbnail for those types of files and keep the system default generic icon.
How can I force fetching thumbnails for those types of files on the file provider file-system ?
Thanks,
