You can search for identifiers within the package.
in-package search v0.2.0
dkim
Dkim.Sign
type signer
type action = [
| `Await of signer
| `Malformed of string
| `Signature of signed t
]
val fill : signer -> string -> int -> int -> signer
val sign : signer -> action
val signer : key:key -> unsigned t -> signer