Event that is raised when a user pushes one or more
refs to a repository.
A push does not guarantee that new commits have been added to the repository; it only guarantees at least one
ref has been
Listeners that are interested in all ref changes, not just those stemming from pushes (such as pull request merges),
should listen for
This event is internally audited with a LOW priority
(Object source, Repository repository, Collection<RefChange> refChanges)