map -package:containers -package:imports -package:foldl -package:ghc -package:basement -package:charset -package:insert-ordered-containers -package:case-insensitive -package:hedgehog -package:invertible package:aeson is:exact

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