getOldPaymentMethodName example

    public function isPersistent(): bool
    {
        return true;
    }

    public function getParameters(): array
    {
        return [
            'newPaymentMethodName' => $this->getNewPaymentMethodName(),
            'oldPaymentMethodName' => $this->getOldPaymentMethodName(),
        ];
    }

    public function blockOrder(): bool
    {
        return false;
    }

    public function getId(): string
    {
        return sprintf('%s-%s-%s', self::KEY, $this->oldPaymentMethodName, $this->newPaymentMethodName);
    }

        foreach ($cartErrors as $error) {
            if (!$error instanceof ShippingMethodChangedError && !$error instanceof PaymentMethodChangedError) {
                continue;
            }

            if ($error instanceof ShippingMethodChangedError) {
                $cartErrors->add(new ShippingMethodBlockedError($error->getOldShippingMethodName()));
            }

            if ($error instanceof PaymentMethodChangedError) {
                $cartErrors->add(new PaymentMethodBlockedError($error->getOldPaymentMethodName()));
            }

            $cartErrors->remove($error->getId());
        }
    }
}

                        SalesChannelContextService::SHIPPING_METHOD_ID => $blockedId,
                    ]
                );
            }

            return;
        }

        if ($error instanceof PaymentMethodChangedError) {
            $paymentMethodRepository = $this->getContainer()->get('payment_method.repository');
            $blockedId = $this->getPaymentMethodIdByName($error->getOldPaymentMethodName());
            $newId = $this->getPaymentMethodIdByName($error->getNewPaymentMethodName());

            $paymentMethodRepository->update([
                [
                    'id' => $blockedId,
                    'availabilityRuleId' => $availabilityRuleId,
                ],
            ], Context::createDefaultContext());

            $salesChannelRepository->update([
                [