ReserveQuantityCollection::create

public function create()
{
	$registry  = Registry::getInstance(static::getRegistryType());

	/** @var ReserveQuantity $reservedItemClassName */
	$reservedItemClassName = $registry->getReservedItemClassName();

	$reservedItem = $reservedItemClassName::create($this);
	$this->addItem($reservedItem);

	return $reservedItem;
}