Gumdrop\PageCollection::offsetSet PHP Метод

    public function offsetSet($offset, $Page)
    {
        if (!$Page instanceof \Gumdrop\Page) {
            throw new Exception('Expecting an instance of \\Gumdrop\\Page');
        }
        if (is_null($offset)) {
            $offset = count($this->Pages);
        }
        $this->Pages[$offset] = $Page;
    }