depends, where exactly ? I'm sure this is something that should be added somewhere. What others think ?
One more thing...
What I do for such information (as lots of people out there I guess) is having a Personnal Utility class where I put such methods ( often class side like for instance #listOmnibrowserPackages). Then monticello help keeping it avalaible for all my new images. A precious ressource would be to share such utilities (do we need a model ? maybe only a web app that shows them?). Ramon image for instance has lots of them.
Cheers,
Cédrick