Avoid lame conflicts in `Ability.allowed`
Description of the problem: https://gitlab.com/gitlab-org/gitlab-ee/issues/715#note_12912137
The easiest solution is to extract the case
to a dedicated method.
Description of the problem: https://gitlab.com/gitlab-org/gitlab-ee/issues/715#note_12912137
The easiest solution is to extract the case
to a dedicated method.