saveRegisterSuccess example

$session->offsetSet('isAccountless', $accountMode === Customer::ACCOUNT_MODE_FAST_LOGIN);

            $this->redirectCustomer([
                'location' => 'register',
                'optinsuccess' => true,
            ]);

            return;
        }

        $this->saveRegisterSuccess($data, $customer);
        $this->redirectCustomer();
    }

    public function confirmValidationAction()
    {
        $connection = $this->container->get(Connection::class);

        $modelManager = $this->container->get(ModelManager::class);

        $hash = $this->Request()->get('sConfirmation');