You can search for identifiers within the package.
in-package search v0.2.0
type 'a custom =
| Custom of 'a
type ('kind, 'how_made) t =
| Custom : {
id : 'a;
to_string : 'a -> string;
serialize : 'a -> 'b -> string;
deserialize_exn : 'a -> string -> 'b;
hash : 'a -> 'b -> string;
materialize : 'a -> 'b option;
} -> ('a custom, 'b) t
| Pair : ('a, 'c) t * ('b, 'd) t -> ('a * 'b, 'c * 'd) t
| List : ('a, 'c) t list -> ('a list, 'c list) t
val to_string : 'a 'b. ('a, 'b) t -> string
val deserialize_exn : 'a 'b. ('a, 'b) t -> string -> 'b
val serialize : 'a 'b. ('a, 'b) t -> 'b -> string
val hash : 'a 'b. ('a, 'b) t -> 'b -> string
val materialize : 'a 'b. ('a, 'b) t -> 'b option