internal static void RemoveStaircases(List<Path> paths, RectangleNode<Polyline> hierarchyOfObstacles) {
     var r = new StaircaseRemover(paths, hierarchyOfObstacles);
     r.Calculate();
 }
        internal static void RemoveStaircases(List <Path> paths, RectangleNode <Polyline> hierarchyOfObstacles)
        {
            var r = new StaircaseRemover(paths, hierarchyOfObstacles);

            r.Calculate();
        }