If you set downloaded file as a notification attachment system moves them into attachment data store.
"For remote notifications, the system validates attachments after your notification service app extension finishes. Once validated, the system moves the attached files into the attachment data store so that the appropriate processes can access the files. The system copies attachments located inside an app's bundle."
https://developer.apple.com/documentation/usernotifications/unnotificationattachment
Korneliusz
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for