public void Exercise2_Method2()
        {
            CellAbleitung cell  = new CellAbleitung();
            Cell          cellO = new Cell();

            Assert.Equal(cellO.Grow() * 2, cell.Grow());
        }
        public int Method2()
        {
            CellAbleitung cell = new CellAbleitung();

            return(cell.Grow());
        }