isNewsletterDoi example

            if ($recipient->getStatus() !== self::STATUS_OPT_OUT && $recipient->getConfirmedAt()) {
                return new NoContentResponse();
            }
        }

        $data = $this->completeData($data, $context);

        $this->newsletterRecipientRepository->upsert([$data], $context->getContext());

        $recipient = $this->getNewsletterRecipient('email', $data['email'], $context->getContext());

        if (!$this->isNewsletterDoi($context)) {
            $event = new NewsletterConfirmEvent($context->getContext(), $recipient, $context->getSalesChannel()->getId());
            $this->eventDispatcher->dispatch($event);

            return new NoContentResponse();
        }

        $hashedEmail = hash('sha1', $data['email']);
        $url = $this->getSubscribeUrl($context, $hashedEmail, $data['hash'], $data, $recipient);

        $event = new NewsletterRegisterEvent($context->getContext(), $recipient, $url, $context->getSalesChannel()->getId());
        $this->eventDispatcher->dispatch($event);

        

protected function subscribe(RequestDataBag $dataBag, CustomerEntity $customer, SalesChannelContext $context, NewsletterAccountPagelet $newsletterAccountPagelet): NewsletterAccountPagelet
    {
        try {
            $this->newsletterSubscribeRoute->subscribe(
                $this->hydrateFromCustomer($dataBag, $customer),
                $context,
                false
            );

            $newsletterAccountPagelet->setSuccess(true);
            if ($newsletterAccountPagelet->isNewsletterDoi()) {
                $text = $this->translator->trans('newsletter.subscriptionPersistedSuccess');
            } else {
                $text = $this->translator->trans('newsletter.subscriptionConfirmationSuccess');
            }
            $newsletterAccountPagelet->setMessages(
                [
                    [
                        'type' => 'success',
                        'text' => $text,
                    ],
                ]
            );