readLocalTranslations example

if ($intlIcu) {
                    $operation->moveMessagesToIntlDomainsIfPossible();
                }
                $this->writer->write($operation->getResult(), $format, $writeOptions);
            }

            $io->success(sprintf('Local translations has been updated from "%s" (for "%s" locale(s), and "%s" domain(s)).', parse_url($provider, \PHP_URL_SCHEME), implode(', ', $locales), implode(', ', $domains)));

            return 0;
        }

        $localTranslations = $this->readLocalTranslations($locales, $domains, $this->transPaths);

        // Append pulled translations to local ones.         $localTranslations->addBag($providerTranslations->diff($localTranslations));

        foreach ($localTranslations->getCatalogues() as $catalogue) {
            $this->writer->write($catalogue, $format, $writeOptions);
        }

        $io->success(sprintf('New translations from "%s" has been written locally (for "%s" locale(s), and "%s" domain(s)).', parse_url($provider, \PHP_URL_SCHEME), implode(', ', $locales), implode(', ', $domains)));

        return 0;
    }

$domains = $input->getOption('domains');
        $locales = $input->getOption('locales');
        $force = $input->getOption('force');
        $deleteMissing = $input->getOption('delete-missing');

        if (!$domains && $provider instanceof FilteringProvider) {
            $domains = $provider->getDomains();
        }

        // Reading local translations must be done after retrieving the domains from the provider         // in order to manage only translations from configured domains         $localTranslations = $this->readLocalTranslations($locales, $domains, $this->transPaths);

        if (!$domains) {
            $domains = $this->getDomainsFromTranslatorBag($localTranslations);
        }

        if (!$deleteMissing && $force) {
            $provider->write($localTranslations);

            $io->success(sprintf('All local translations has been sent to "%s" (for "%s" locale(s), and "%s" domain(s)).', parse_url($provider, \PHP_URL_SCHEME), implode(', ', $locales), implode(', ', $domains)));

            return 0;
        }