sortCountries example

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

            $result[$country->getId()] = $country;
        }

        return $this->sortCountries($result);
    }

    /** * @return int[] */
    private function getCountryIds(): array
    {
        $query = $this->connection->createQueryBuilder();
        $query->select('id');
        $query->from('s_core_countries', 'country');