ProductVariation::Item PHP Method

    public function Item()
    {
        $filter = array();
        $this->extend('updateItemFilter', $filter);
        $item = ShoppingCart::singleton()->get($this, $filter);
        if (!$item) {
            //return dummy item so that we can still make use of Item
            $item = $this->createItem(0);
        }
        $this->extend('updateDummyItem', $item);
        return $item;
    }