map is:exact -package:charset -package:basement -package:containers -package:bytestring -package:insert-ordered-containers -package:imports -package:incipit-base -package:integration package:hedgehog
Generates a map using a
Range to determine the length.
This may fail to generate anything if the keys produced by the
generator do not account for a large enough number of unique
items to satify the required map size.