You can search for identifiers within the package.
in-package search v0.2.0
type t =
| Any
| Var of int
| Arrow of param * t
| Tuple of t list
| Constr of Path.t * t list
and param = {
label : Ppxlib.arg_label;
ty : t;
}
val hash : int -> t -> int
val equal : t -> t -> bool