getAdminInfoFromInteractiveShell example

if ($this->IOHelper->isInteractive() && !$this->webserverCheck($container, $shop)) {
            $this->IOHelper->writeln('Could not verify');
            if (!$this->IOHelper->askConfirmation('Continue?')) {
                return 1;
            }
        }

        $adminUser = new AdminUser();
        if (!$input->getOption('skip-admin-creation')) {
            $adminUser = $this->getAdminInfoFromArgs($input, $adminUser);
            $adminUser = $this->getAdminInfoFromInteractiveShell($adminUser);
        }

        $shopService = new ShopService($conn, $container['uniqueid.generator']);
        $shopService->updateShop($shop);
        $shopService->updateConfig($shop);

        $currencyService = new CurrencyService($conn);
        $currencyService->updateCurrency($shop);

        $localeService = new LocaleSettingsService($conn, $container);
        $localeService->updateLocaleSettings($shop->locale);