getCountryStates example

public function __construct(CountryGatewayInterface $gateway, Connection $connection)
    {
        $this->gateway = $gateway;
        $this->connection = $connection;
    }

    public function getCountries(ShopContextInterface $context)
    {
        $ids = $this->getCountryIds();
        $countries = $this->gateway->getCountries($ids, $context);

        $states = $this->gateway->getCountryStates($ids, $context);

        $result = [];
        foreach ($countries as $country) {
            if (!$country->isActive()) {
                continue;
            }

            if (isset($states[$country->getId()])) {
                $country->setStates(
                    $this->sortStates($states[$country->getId()])
                );
            }