Summary:
UINode has never been a good name, we have 3 versions of a node.
ClientNode Previously UINode (the raw data from the client)
NestedNode (for the visualiser)
TreeNode (extends ClientNode and adds stuff specific to the tree like indentation and expanded states)
Arguablely we dont need nested node but that is another story
Reviewed By: elboman
Differential Revision: D47547529
fbshipit-source-id: 9a3b119d1230ea7b6734e7a3270c28287b04faf1
87a1b657c3