downloadFolder( )
Returns a download URL for downloading a folder from the Media Manager.
The downloadFolder() function returns a Promise that resolves to a download URL
for a Media Manager folder's files and sub-folders.
A compressed file is created and can be downloaded using the download URL. The compressed file can contain up to 1000 files. Sub-folders are included. The name of the top-level folder requested for download isn't included.
Call the wix-location.to() function with
the returned download URL as the external web address. This opens the Download bar in your browser.
This function provides a permanent URL for downloading a folder.
To get a temporary download URL for a single file, use the getDownloadUrl() function.
The ID of the folder to download. You can get the ID with the folderId property of the listFolders() function.