module Tree:sig..end
type'eltt =('elt, Comparator.Poly.comparator_witness) Core_set.Tree.t
include Creators_and_accessors1
val t_of_sexp : (Sexplib.Sexp.t -> 'elt) -> Sexplib.Sexp.t -> 'elt tval sexp_of_t : ('elt -> Sexplib.Sexp.t) -> 'elt t -> Sexplib.Sexp.t