/**
  * Finds the Styles model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $style_id
  * @param integer $item_id
  * @return Styles the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($style_id, $item_id)
 {
     if (($model = Styles::findOne(['style_id' => $style_id, 'item_id' => $item_id])) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }