Alternative data location - snap package installation

Continuing the discussion from Is there a safe and reliable way to move data directory out of web root?:

how in a sudo snap install operation could you achieve that (choosing a different location for filestorage then the default /var/snap/nextcloud/common/nextcloud/data/)?

nobody with a hint? Does that mean there is no way to set up an alternative storage location for the data repository on a snap installation from the beginning?

how do you guys deal with that in production then? Any alternatives ?