Twig_Filter::getSafe PHP Метод

    public function getSafe(Twig_Node $filterArgs)
    {
        if (isset($this->options['is_safe'])) {
            return $this->options['is_safe'];
        }

        if (isset($this->options['is_safe_callback'])) {
            return call_user_func($this->options['is_safe_callback'], $filterArgs);
        }

        return array();
    }