updatePasswordHash example

    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())) {
            throw CustomerException::badCredentials();
        }

        if (!$this->isCustomerConfirmed($customer)) {
            // Make sure to only throw this exception after it has been verified it was a valid login