[System.Serializable]
public enum ItemType
{
    Item1 = 0,
    Item2 = 1,
    Item3 = 2,
    Item4 = 3,
    Item5 = 4,
    Item6 = 5,
    Item7 = 6,
    Item8 = 7,
    Item9 = 8,
    Item10 = 9,

    MAX = 6
}

public class GoodsModel
{

}