Lookitsatravis\Listify\Listify::checkScope PHP 메소드

    private function checkScope()
    {
        if ($this->hasScopeChanged()) {
            $this->swapChangedAttributes();
            if ($this->lowerItem()) {
                $this->decrementPositionsOnLowerItems();
            }
            $this->swapChangedAttributes();
            $method_name = "addToList" . $this->addNewAt();
            $this->{$method_name}();
        }
    }