public void DrawCard(Player player = null, Dealer dealer = null)
{
if (dealer is null)
{
Console.WriteLine("{0} dealer hands you {1}", player.Name, DeckOfCards[0]);
player.AddNumber(DeckOfCards[0].Number);
DeckOfCards.Remove(DeckOfCards[0]);
}
else
{
Console.WriteLine("Dealer gets {0}", DeckOfCards[0]);
dealer.AddNumber(DeckOfCards[0].Number);
DeckOfCards.Remove(DeckOfCards[0]);
}
}