public static function getServicePath($serviceFile, $currentVersion = KC_CART_VERSION)
 {
     //v3.X  v3.1.X  v.3.1.3
     if ($currentVersion < '1.5') {
         $version = '1.5.0-';
     } else {
         if ($currentVersion >= '1.5.3') {
             $version = '1.5.3+';
         } else {
             $version = '1.5+';
         }
     }
     $filePath = KANCART_ROOT . '/services/v' . $version . '/' . $serviceFile;
     if (kc_file_exists($filePath)) {
         return $filePath;
     }
     return false;
 }
 public static function actionExists($requestMethod)
 {
     return kc_file_exists(self::getActionPath($requestMethod));
 }