You can search for identifiers within the package.
in-package search v0.2.0
val default_ctx : [> `Ssl_not_available ]
val init : ?ctx:[> `Ssl_not_available ] -> ?backlog:'a -> ?password:'b -> certfile:'c -> keyfile:'d -> ?stop:'e -> ?timeout:'f -> 'g -> 'h -> 'i Lwt.t