The exact documentation you were looking for could not be found. Here is the best guess.
Alias for IRB::Notifier::CompositeNotifier#level_notifier=
APIdock release: IRON STEVE (1.4)
If you have any comments, ideas or feedback, feel free to contact us at
APIdock copyright Nodeta Oy 2008-2013
Check out how the team behind APIdock connects Pivotal Tracker, GitHub and group chat to one workflow.