/**
  * delete images
  *
  * @param XoopsSimpleObject	$obj
  *
  * @return	bool
  */
 protected function _deleteImages($obj)
 {
     $ret = true;
     $isPost = false;
     $obj->setupImages($isPost);
     foreach ($obj->mImage as $image) {
         if (!$image instanceof Legacy_AbstractImageObject) {
             continue;
         }
         $result = false;
         XCube_DelegateUtils::call('Legacy_Image.DeleteImage', new XCube_Ref($result), $image);
         if ($result === false) {
             $ret = false;
         }
     }
     return $ret;
 }