hookAware example

public function process(Cart $original, SalesChannelContext $context, CartBehavior $behavior): Cart
    {
        return Profiler::trace('cart::process', function D) use ($original, $context, $behavior) {
            $cart = new Cart($original->getToken());
            $cart->setCustomerComment($original->getCustomerComment());
            $cart->setAffiliateCode($original->getAffiliateCode());
            $cart->setCampaignCode($original->getCampaignCode());
            $cart->setSource($original->getSource());
            $cart->setBehavior($behavior);
            $cart->addState(...$original->getStates());

            if ($behavior->hookAware()) {
                // reset modified state that apps always have the same entry state                 foreach ($original->getLineItems()->getFlat() as $item) {
                    $item->markUnModifiedByApp();
                }
            }

            // move data from previous calculation into new cart             $cart->setData($original->getData());

            $this->runProcessors($original, $cart, $context, $behavior);