1The Rule API is a library intended for view authors to add designtime 2support for their custom views in Android layout editors. 3 4NOTE: The API is *not* final and will very likely continue to change 5incompatibly until we finish it and incorporate feedback. 6 7The rule API attempts to be IDE agnostic, so it should not have 8specific dependencies on any tools. IDE vendors building layout 9editors should provide IDE-side implementations of the rule interfaces 10such that they can interact with view rules. 11