Hello support,
The reference documentation states that the https://api.dropboxapi.com/2/files/list_folder call returns entries that are an array of "List of (Metadata)..."
Both the FileMetadata and the FolderMetadata are said to contain the parameter called "preview_url" (see screenshot) but it says that this field is optional.

How can we make it so that this field shows up in the API response? I've tested calling it a few times but so far have not been able to get the "preview_url" in the metadata response.
Thank you all!