Patricia Tree API - WrappedHomogeneousValue

Same as HomogeneousValue, but uses a wrapper (unboxed) type instead of direct equality. This avoids a problem in the typechecker with overly eager simplification of aliases. More info on the OCaml discourse post and the github issue.

type ('a, 'map) t = ('a, 'map) snd

The type of values. A 'map map maps 'key key to ('key, 'map) value. Can be mutable if desired, unless it is being used in Hash-consed maps and sets.