Does navbar-ex1-collapse class exist in Bootstrap 3?

Created by: skiabox

I've read your documentation about the navbar in Bootstrap 3 doc files, and I've read about a class named navbar-ex1-collapse that does not exist in bootstrap.css The link of the documentation is this http://getbootstrap.com/components/#navbar Is this a typo? In the working example (http://getbootstrap.com/examples/jumbotron/) you don't use this class at all. Thank you.