calculateAmount example

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

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

            if ($behavior->hookAware()) {
                $this->executor->execute(new CartHook($cart, $context));
            }

            $this->calculateAmount($context, $cart);

            $cart->addErrors(
                ...$this->validator->validate($cart, $context)
            );

            $cart->setTransactions(
                $this->transactionProcessor->process($cart, $context)
            );

            $cart->setRuleIds($context->getRuleIds());