Trying to port an app from java to flutter. Reading through all the available blogs, GPT etc, it seems impossible in Flutter to use the security scoped resources that the UIDocumentPickerViewController creates, that allows apps in-place IO on files outside the sandbox.
Desired UX is that the user can store their documents wherever they like, iCloud, local, OneDrive, Google Drive or whatever storage is available on the device.
Current solutions seem to copy the selected file into the sandbox which is not great because then you’ve got to remind the user to share it back to where it came from.
Have I missed something and ended up barking up the wrong tree 
?