Generics, Predicates and Anonymous methods

Ah, got to love .NET Framework 2.0 - it is full of some really useful features. Here is some code that demonstrates three new concepts; Generics, Predicates and Anonymous methods. Its beauty is in it simplicity:

public class SalesOrderItemCollection : List
{
    public SalesOrderItem FindByItemId(int itemId)
    {
        return this.Find(delegate(SalesOrderItem i)
        {
            return i.ItemId == itemId;
        });
    }
}