Can i ask Manage external storage Permission for Password Saver Application?

Question

I have a doubt that can I ask MANAGE_EXTERNAL_STORAGE Permission for a Password Saver application to create a hidden backup\restore point for the users? I searched here https://developer.android.com/training/data-storage/manage-all-files but got only this and I am confused:

if your app includes a use case that's similar to the following examples, it's likely to be allowed to request the MANAGE_EXTERNAL_STORAGE permission:

File managers
Backup and restore apps
Anti-virus apps
Document management apps
On-device file search
Disk and file encryption
Device-to-device data migration