static void Main(string[] args)
{
var store = new NumberStore();
Console.WriteLine($"Original sequence: {store.ToString()}");
int number = 16;
ref var value = ref store.FindNumber(number);
public static void Tests()
{
// <Snippet2>
var store = new NumberStore();
Console.WriteLine($"Original sequence: {store.ToString()}");
int number = 16;
ref var value = ref store.FindNumber(number);