#fixed code
                                protected String resolveDriverVersion(String driverVersion) {
        String preferenceKey = getKeyForPreferences();
        Optional<String> browserVersion = empty();
        browserVersion = getValueFromPreferences(preferenceKey, browserVersion);
        if (!browserVersion.isPresent()) {
            browserVersion = detectBrowserVersion();
        }
        if (browserVersion.isPresent()) {
            preferenceKey = getKeyForPreferences() + browserVersion.get();
            driverVersion = preferences.getValueFromPreferences(preferenceKey);

            Optional<String> optionalDriverVersion = empty();
            if (isUnknown(driverVersion)) {
                optionalDriverVersion = getDriverVersionFromRepository(
                        browserVersion);
            }
            if (isUnknown(driverVersion)) {
                optionalDriverVersion = getDriverVersionFromProperties(
                        preferenceKey);
            }
            if (optionalDriverVersion.isPresent()) {
                driverVersion = optionalDriverVersion.get();
            }
            if (isUnknown(driverVersion)) {
                log.debug(
                        "The driver version for {} {} is unknown ... trying with latest",
                        getDriverManagerType(), browserVersion.get());
            } else if (!isUnknown(driverVersion)) {
                log.info(
                        "Using {} {} (since {} {} is installed in your machine)",
                        getDriverName(), driverVersion, getDriverManagerType(),
                        browserVersion.get());
                storeInPreferences(preferenceKey, driverVersion,
                        browserVersion.get());
            }
        }

        // if driverVersion is still unknown, try with latest
        if (isUnknown(driverVersion)) {
            Optional<String> latestDriverVersionFromRepository = getLatestDriverVersionFromRepository();
            if (latestDriverVersionFromRepository.isPresent()) {
                driverVersion = latestDriverVersionFromRepository.get();
            }
        }
        return driverVersion;
    }
#vulnerable code 
                                protected String resolveDriverVersion(String driverVersion) {
        preferenceKey = getKeyForPreferences();
        Optional<String> browserVersion = empty();
        browserVersion = getValueFromPreferences(browserVersion);
        if (!browserVersion.isPresent()) {
            browserVersion = detectBrowserVersion();
        }
        if (browserVersion.isPresent()) {
            preferenceKey = getKeyForPreferences() + browserVersion.get();
            driverVersion = preferences.getValueFromPreferences(preferenceKey);

            Optional<String> optionalDriverVersion = empty();
            if (isUnknown(driverVersion)) {
                optionalDriverVersion = getDriverVersionFromRepository(
                        browserVersion);
            }
            if (isUnknown(driverVersion)) {
                optionalDriverVersion = getDriverVersionFromProperties(
                        preferenceKey);
            }
            if (optionalDriverVersion.isPresent()) {
                driverVersion = optionalDriverVersion.get();
            }
            if (isUnknown(driverVersion)) {
                log.debug(
                        "The driver version for {} {} is unknown ... trying with latest",
                        getDriverManagerType(), browserVersion.get());
            } else if (!isUnknown(driverVersion)) {
                log.info(
                        "Using {} {} (since {} {} is installed in your machine)",
                        getDriverName(), driverVersion, getDriverManagerType(),
                        browserVersion.get());
                storeInPreferences(driverVersion, browserVersion.get());
            }
        }

        // if driverVersion is still unknown, try with latest
        if (isUnknown(driverVersion)) {
            Optional<String> latestDriverVersionFromRepository = getLatestDriverVersionFromRepository();
            if (latestDriverVersionFromRepository.isPresent()) {
                driverVersion = latestDriverVersionFromRepository.get();
            }
        }
        return driverVersion;
    } 
                            #location 18 
                            #vulnerability type THREAD_SAFETY_VIOLATION