You can search for identifiers within the package.
in-package search v0.2.0
module Code : sig ... end
type t = {
code : Code.t;
message : string;
data : Json.t option;
}
exception E of t
val make : ?data:Json.t -> code:Code.t -> message:string -> unit -> t
val raise : t -> 'a
val of_exn : exn -> t
val yojson_of_t : t -> Json.t