You can search for identifiers within the package.
in-package search v0.2.0
type 'a t = 'a Faraday.iovec = {
buffer : 'a;
off : int;
len : int;
}
val length : _ t -> int
val lengthv : _ t list -> int
val shift : 'a t -> int -> 'a t
val shiftv : 'a t list -> int -> 'a t list
val pp_hum : Format.formatter -> _ t -> unit