You can search for identifiers within the package.
in-package search v0.2.0
include Resp.OUTPUT with type oc = oc
type oc = oc
val write : oc -> string -> unit Lwt.t
val write_sep : oc -> unit Lwt.t
val write_lexeme : oc -> Resp.lexeme -> unit Lwt.t
val encode : oc -> Resp.t -> unit Lwt.t