public bool AddCoffee(Coffee coffee)
{
// TODO: Add prepared coffee.
throw new NotImplementedException();
}
public bool RemoveCoffee(Coffee coffee)
{
// TODO: Subtract given coffee
throw new NotImplementedException();
}
public bool ServeCustomer(Coffee coffee)
{
// TODO: remove customer from queue and give him coffee. If coffee not yet made do nothing and return false.
throw new NotImplementedException();
}