// link title in index view
    public function get_viewindex_link_titlelabel()
    {
        return ['index' => [$this->name, $this->ds_rate_max.' MBit/s', $this->us_rate_max.' MBit/s'],
                'index_header' => ['Name', 'DS Rate', 'US Rate'],
                'header' => $this->name];
    }