fromDsnObject example

private function createSmtpTransport(SystemConfigService $configService): TransportInterface
    {
        $dsn = new Dsn(
            $this->getEncryption($configService) === 'ssl' ? 'smtps' : 'smtp',
            $configService->getString('core.mailerSettings.host'),
            $configService->getString('core.mailerSettings.username'),
            $configService->getString('core.mailerSettings.password'),
            $configService->getInt('core.mailerSettings.port'),
            $this->getEncryption($configService) !== null ? [] : ['verify_peer' => 0]
        );

        return $this->envBasedTransport->fromDsnObject($dsn);
    }

    private function getEncryption(SystemConfigService $configService): ?string
    {
        $encryption = $configService->getString('core.mailerSettings.encryption');

        return match ($encryption) {
            'ssl' => 'ssl',
            'tls' => 'tls',
            default => null,
        };
    }

                    return [new $class($args), $offset];
                }
            }

            if (preg_match('{(\w+)\(}A', $dsn, $matches, 0, $offset)) {
                throw new InvalidArgumentException(sprintf('The "%s" keyword is not valid (valid ones are "%s"), ', $matches[1], implode('", "', array_keys($keywords))));
            }

            if ($pos = strcspn($dsn, ' )', $offset)) {
                return [$this->fromDsnObject(Dsn::fromString(substr($dsn, $offset, $pos))), $offset + $pos];
            }

            return [$this->fromDsnObject(Dsn::fromString(substr($dsn, $offset))), \strlen($dsn)];
        }
    }

    public function fromDsnObject(Dsn $dsn): TransportInterface
    {
        foreach ($this->factories as $factory) {
            if ($factory->supports($dsn)) {
                return $factory->create($dsn);
            }

    public function __construct(iterable $factories, array $enabledLocales)
    {
        $this->factories = $factories;
        $this->enabledLocales = $enabledLocales;
    }

    public function fromConfig(array $config): TranslationProviderCollection
    {
        $providers = [];
        foreach ($config as $name => $currentConfig) {
            $providers[$name] = $this->fromDsnObject(
                new Dsn($currentConfig['dsn']),
                !$currentConfig['locales'] ? $this->enabledLocales : $currentConfig['locales'],
                !$currentConfig['domains'] ? [] : $currentConfig['domains']
            );
        }

        return new TranslationProviderCollection($providers);
    }

    public function fromDsnObject(Dsn $dsn, array $locales, array $domains = []): ProviderInterface
    {
        

    {
        $dsns = preg_split('/\s++\|\|\s++/', $dsn);
        if (\count($dsns) > 1) {
            return new FailoverTransport($this->createFromDsns($dsns));
        }

        $dsns = preg_split('/\s++&&\s++/', $dsn);
        if (\count($dsns) > 1) {
            return new RoundRobinTransport($this->createFromDsns($dsns));
        }

        return $this->fromDsnObject(new Dsn($dsn));
    }

    public function fromDsnObject(Dsn $dsn): TransportInterface
    {
        foreach ($this->factories as $factory) {
            if ($factory->supports($dsn)) {
                return $factory->create($dsn);
            }
        }

        throw new UnsupportedSchemeException($dsn);
    }