Provides a unique collection of info, including volfs path, inode number, extended attribute and total sizes, Base-64 encoded Bookmark, and more.
volfs
New version integrates Bookmark resolution, preview, etc. and has detailed reporting. Runs on El Cap to High Sierra, HFS+ and APFS.
Why wasn’t a Finder Sync extension working properly? What’s the difference between volfs and FileReferenceURLs, and how have they changed in APFS?
First there were inodes, aliases, and links. Finder aliases already use the volfs file system, but Apple wants us to switch to its opaque Bookmarks
The Eclectic Light Company 