using System.Collections.Generic;
public static void Main()
var list = new List<int> { 1, 2, 3, 4, 5, 6 };
Console.WriteLine("Process item {t}");
Console.WriteLine("Process item {t}");
Console.WriteLine("Success item {t}");
Console.WriteLine("Remove item {t}");
Console.WriteLine("Call method Foo() class A");
Console.WriteLine("Call method Foo() class B");
public static void Main()