<?php declare(strict_types = 1);

final class Item
{
}

/**
 * @extends Traversable<Item>
 */
interface ItemListInterface extends Traversable
{
}

/**
 * @implements IteratorAggregate<string>
 */
final class ItemList implements IteratorAggregate, ItemListInterface
{
	public function getIterator()
	{
		return new ArrayIterator([]);
	}
}