ansible stat -- version?

So I ran the stat module on a local file, and it returned this:

“havethefile”: {
“changed”: false,
“failed”: false,
“stat”: {
“atime”: 1538498295.4939597,
“attr_flags”: “e”,
[…]
“uid”: 505,
“version”: “18446744072179404285”,
[…]

What is the version value? I cannot find it in any documentation.

Thanks.

–EbH

It is part of a file's attributes, from man page "file version or
generation number" (its output from lsattr, can be set via chattr)