libphonenumber\PhoneNumberToTimeZonesMapper::loadPrefixTimeZonesMapFromFile PHP Метод

    protected static function loadPrefixTimeZonesMapFromFile($path)
    {
        if (!is_readable($path)) {
            throw new \InvalidArgumentException("Mapping file can not be found");
        }
        $data = (require $path);
        $map = new PrefixTimeZonesMap($data);
        return $map;
    }