protected virtual void RaiseBookAddedEvent(AddedBookToLibEventArgs eventArgs)
{
BookAdded?.Invoke(this, eventArgs);
Console.WriteLine("Event has completed raised from library");
}
private void OnBookAdded(object sender, AddedBookToLibEventArgs e)
{
Console.WriteLine("\nThe book '" + e.Title + "' has been added to the library");
Console.WriteLine(e.Title);
Thread.Sleep(6000);
}