Mod.RefModule digested references.
TODO. Use that in B00_odoc.
The type for module references as found in compilation objects. This is a module name and a digest of its interface.
val v : string -> Stdlib.Digest.t -> tv n d is a module reference with name n and digest d.
val digest : t -> Stdlib.Digest.tdigest m is the interface digest of module reference m.
val pp : t B0_std.Fmt.tpp formats a module reference.
module Set : sig ... endModule reference sets.
module Map : sig ... endModule reference maps.