I have this code for my test, can you please help me

1) A barcode label on a box in our warehouse has the following format
HKGB43563PC5 
The first 3 characters are always the country code, and the last 3 relate to the number of pieces. The value in the middle may vary in length, and may be a combination of letters and numbers in no particular order.

A `List<T>` has already been declared in the main application, you can assume it is accessible from both the class and the method.

```
List<StockItems> stockList = new List<StockItems>();

```

Write code that would replace the comments in the method and the class below to ensure that the list gets populated.

```
Private void AddStockItemToList(string barcode)
 {
   //ToDo Parse the string and add the items to the list.
 }

public class StockItems
{
    public int Quantity;
    public string OriginCountryCode;
    public string StockItemReference
    public Items(int qty, string country, string reference)
    {
       //
    }
}

```