public Accesory(string manufacturer, string model, string description, decimal price, DateTime purchaseDate,
string serialnumber, ServiceContract serviceContract)
: base(manufacturer, model, description, price, purchaseDate)
{
Serialnumber = serialnumber;
ServiceContract = serviceContract;
}
public Computer(string manufacturer, string model, string description, decimal price, DateTime purchaseDate,
string serialnumber, string assetTag, string uuid, List <string> macAddressList, ServiceContract serviceContract)
: base(manufacturer, model, description, price, purchaseDate)
{
Serialnumber = serialnumber;
Uuid = uuid;
AssetTag = assetTag;
MacAddress = macAddressList ?? new List <string>(); /* The ?? operator is called the null-coalescing operator https://msdn.microsoft.com/en-us/library/ms173224.aspx */
ServiceContract = serviceContract;
}