internal void Add(Cell[,] cell)
{
Cell[,] cellOfCurrentField = new Cell[cell.GetLength(0), cell.GetLength(1)];
for (int i = 0; i < cellOfCurrentField.GetLength(0); i++)
{
for (int j = 0; j < cellOfCurrentField.GetLength(1); j++)
{
cellOfCurrentField[i, j] = new Cell(cell[i, j].GetIsAlive());
}
}
memento.Add(cellOfCurrentField);
}
