You can search for identifiers within the package.
in-package search v0.2.0
type t =
| CLASS_ID of int64
| SUBCLASS_ID of int64
| PROGIF_ID of int64
| VENDOR_ID of int64
| DEVICE_ID of int64
| SUBDEVICE_ID of int64 * int64
val to_string : t -> string
val compare : 'a -> 'a -> int