Summary: Ref T4222. Currently, this exposes a bunch of information about the Celerity internals. This information is difficult to preserve exactly with the new maps. Strengthen the API by providing more specific capabilities. Test Plan: Regenerated map, browsed around. Reviewers: btrahan, hach-que Reviewed By: hach-que CC: aran Maniphest Tasks: T4222 Differential Revision: https://secure.phabricator.com/D7867