module Tree:sig
..end
type ('k, +'v, 'cmp)
t
include Creators_and_accessors3_with_comparator
val sexp_of_t : ('k -> Sexplib.Sexp.t) ->
('v -> Sexplib.Sexp.t) ->
('cmp -> Sexplib.Sexp.t) -> ('k, 'v, 'cmp) t -> Sexplib.Sexp.t