This partial was introduced a few years ago, with:

- Commit: https://gitlab.com/gitlab-org/gitlab-foss/-/commit/e293ffd48fb16c8ad15c066cfbbe1dcead7c52e0
- MR: https://dev.gitlab.org/gitlab/gitlabhq/-/merge_requests/1990

Later it was refactored then and is unused since:

- https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/5995

Actually funnily enough the MR that refactors the code was created
_before_ the security MR at the time.