map -package:containers -package:base-compat -package:insert-ordered-containers -package:basement -package:psqueues -package:hedgehog -package:invertible -package:case-insensitive -package:regex-tdfa -package:base package:aeson is:exact

map :: (a -> b) -> KeyMap a -> KeyMap b
aeson Data.Aeson.KeyMap
Map a function over all values in the map.