private static void PrintModifiedWindows(string description, IEnumerable<string> titles)
{
    Console.WriteLine(description);
    foreach (var title in titles)
    {
    Console.WriteLine(title);
    }
}


=>

private static void PrintModifiedWindows(State state, IEnumerable<string> titles)
{
    Console.WriteLine($"{state} windows with full titles:");
    foreach (var title in titles)
    {
    Console.WriteLine(title);
    }
}