delete by id return int

src/Utils/Business/LuBusiness.php

 
     /**
      * @param $id int
-     * @return LuDbo|null
+     * @return LuDbo
      */
     public static function getById($id)
     {
 
     /**
      * @param $id int
-     * @return true
+     * @return int
      */
     public static function deleteById($id)
     {
         if (!$res) {
             self::notFound(static::getResourceName() . " not found");
         }
-        return true;
+        return $res;
     }
 
     /**