public static PurchaseSet Combine(PurchaseSet a, PurchaseSet b)
{
PurchaseSet set = new PurchaseSet(null);
PurchaseSet.Combine(a.ItemPurchases, b.ItemPurchases, ref set.ItemPurchases);
return(set);
}
public PurchaseSet Combine(PurchaseSet other)
{
return(PurchaseSet.Combine(this, other));
}