public function setGroupName($group, $name)
    {
        $result = $this->vbot->http->post(sprintf('%s/webwxupdatechatroom?fun=modtopic&pass_ticket=%s', $this->vbot->config['server.uri.base'], $this->vbot->config['server.passTicket']),
            json_encode([
            'BaseRequest'  => $this->vbot->config['server.baseRequest'],
            'ChatRoomName' => $group,
            'NewTopic'     => $name,
        ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES), true);

        return $result['BaseResponse']['Ret'] == 0;
    }