module Debug:Import.Debug(sigend)
val check_invariant : bool Pervasives.refval show_messages : bool Pervasives.refval debug : ('a -> unit) ->
Core.Std.String.t ->
Core.Std.String.t ->
'a Core.Std.List.t ->
'b -> ('b -> Sexplib.Sexp.t) -> ('c -> Sexplib.Sexp.t) -> (unit -> 'c) -> 'c