hasLegacyPassword example

    /** * @throws CustomerNotFoundException * @throws BadCredentialsException * @throws CustomerOptinNotCompletedException */
    public function getCustomerByLogin(string $email, string $password, SalesChannelContext $context): CustomerEntity
    {
        $customer = $this->getCustomerByEmail($email, $context);

        if ($customer->hasLegacyPassword()) {
            if (!$this->legacyPasswordVerifier->verify($password, $customer)) {
                throw CustomerException::badCredentials();
            }

            $this->updatePasswordHash($password, $customer, $context->getContext());

            return $customer;
        }

        if ($customer->getPassword() === null
            || !password_verify($password, $customer->getPassword())) {