Available on java
staticcomparing<T, U>(param1:Function<Dynamic, U>):Comparator<T>
staticcomparing<T, U>(param1:Function<Dynamic, U>, param2:Comparator<Dynamic>):Comparator<T>
staticcomparingDouble<T>(param1:ToDoubleFunction<Dynamic>):Comparator<T>
staticcomparingInt<T>(param1:ToIntFunction<Dynamic>):Comparator<T>
staticcomparingLong<T>(param1:ToLongFunction<Dynamic>):Comparator<T>
staticnaturalOrder<T>():Comparator<T>
staticnullsFirst<T>(param1:Comparator<Dynamic>):Comparator<T>
staticnullsLast<T>(param1:Comparator<Dynamic>):Comparator<T>
staticreverseOrder<T>():Comparator<T>