You can search for identifiers within the package.
in-package search v0.2.0
type t = Irmin.Of_backend(X).Tree.Contents.t
val hash : ?cache:bool -> t -> hash
val key : t -> contents_key option
val force : t -> contents or_error Lwt.t
val force_exn : t -> contents Lwt.t
val clear : t -> unit