map -package:containers -package:charset is:exact -package:insert-ordered-containers -package:ghc -package:case-insensitive -package:basement -package:dlist -package:integration -package:psqueues -package:invertible package:aeson

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