public void AddCream(IExtraAddtions extra)
{
_beverage.AddExtra(extra);
_view.BevInfo = _beverage.BevDescription;
_view.BevCost = _beverage.TotalCost.ToString();
var numOfAdditionAdded = _beverage.Extras.Where(e => e.GetType() == extra.GetType()).Count();
_view.AddCreamEnables = (numOfAdditionAdded < extra.MaxAllowed ? true : false);
_view.UpdateDisBevButtons();
}