Folder items not returning expected fields

According to the API docs here when getting folder items...

Any attribute in the full files or folders objects can be passed in with the fields parameter to get specific attributes, and only those specific attributes back..."

However, we're not seeing the shared_link object returned. Or rather, it is being returned with null in its value. Am I missing something?

In actuality, we're not interested in the shared link url as much as the download_link url contained within that object.

I understand that since this is a nested object the JSON response would be more complicated, so it might be on someone's todo list. It took quite a long time to identify the API is not behaving as documented though, so it would be nice to have one or the other corrected..

Regards,
Dave