DeviceDetector\Parser\OperatingSystem::getAvailableOperatingSystemFamilies PHP Method

    public static function getAvailableOperatingSystemFamilies()
    {
        return self::$osFamilies;
    }

 public function getAllFamilyOs()
 {
     $allFamilyOs = call_user_func_array('array_merge', OperatingSystem::getAvailableOperatingSystemFamilies());
     $allFamilyOs = array_map(function ($os) {
         return array($os);
     }, $allFamilyOs);
     return $allFamilyOs;
 }