public void Main()
        {
            var chef   = new Chef();
            var potato = new Potato();

            chef.CheckIfPotatoIsReadyForCooking(potato);

            var cellVisitor = new VisitCells();

            cellVisitor.VisitCell();
        }
        public static void Main(string[] args)
        {
            var cooker = new Cooker();
            var potato = new Potato();

            cooker.CheckIfPotatoIsReadyForCooking(potato);

            var cellVisitor = new VisitCells();

            cellVisitor.VisitedCell();
        }