getDoubleOptInEvent example

$criteria->addAssociation('defaultBillingAddress.country');
        $criteria->addAssociation('defaultBillingAddress.countryState');
        $criteria->addAssociation('defaultBillingAddress.salutation');
        $criteria->addAssociation('defaultShippingAddress.country');
        $criteria->addAssociation('defaultShippingAddress.countryState');
        $criteria->addAssociation('defaultShippingAddress.salutation');

        /** @var CustomerEntity $customerEntity */
        $customerEntity = $this->customerRepository->search($criteria, $context->getContext())->first();

        if ($customerEntity->getDoubleOptInRegistration()) {
            $this->eventDispatcher->dispatch($this->getDoubleOptInEvent($customerEntity, $context, $data->get('storefrontUrl'), $data->get('redirectTo')));

            // We don't want to leak the hash in store-api             $customerEntity->setHash('');

            return new CustomerResponse($customerEntity);
        }

        $response = new CustomerResponse($customerEntity);

        $newToken = $this->contextPersister->replace($context->getToken(), $context);