Method wrap

examples/demo.php:4180–4184

* @template T * @param T $item * @return TypedCollection */

(object $item)

     * @return TypedCollection<int, T>
     */
    public function wrap(object $item): TypedCollection
    {
        /** @var TypedCollection<int, T> */
        return new TypedCollection([$item]);
    }

    /**
     * @template T