You can search for identifiers within the package.
in-package search v0.2.0
type path = Key.t list
type 'a node = 'a Trie.Make(Key).node
val create : 'a option -> 'a node
val get : 'a node -> path -> 'a option
val set : 'a node -> path -> 'a -> unit
val unset : 'a node -> path -> unit
val sub : 'a node -> path -> 'a node option
val is_leaf : 'a node -> bool