static void Main(string[] args)
{
var covariantList = new CovariantList <C1, C2, C3>();
covariantList.Add(new C3());
Test1(covariantList);
Test2(covariantList);
Test3(covariantList);
Test4(covariantList);
Test5(covariantList);
Test6(covariantList);
Test7((List <C3>)covariantList);
Test7(new List <C3>());
covariantList.Add(new C3());
Test1(covariantList);
List <C3> list = covariantList;
list.Add(new C3());
Test1(covariantList);
Console.ReadLine();
}
private static void Test7(CovariantList <C2, C2, C3> c)
{
Console.WriteLine("Test7 Count: " + c.Count);
}