You can search for identifiers within the package.
in-package search v0.2.0
module Map : sig ... end
type t = Int32.t * C.Hash.t Map.t
val size : int32
val empty : t
val add : C.Hash.t -> t -> t
val mem : C.Hash.t -> t -> bool
val to_list : t -> C.Hash.t list
val of_list : C.Hash.t list -> t
val encoding : t Data_encoding.encoding