public function setStick($username, $isStick = true)
    {
        $url = sprintf('%s/webwxoplog?lang=zh_CN&pass_ticket=%s', $this->vbot->config['server.uri.base'], $this->vbot->config['server.passTicket']);

        $result = $this->vbot->http->json($url, [
            'UserName'    => $username,
            'CmdId'       => 3,
            'OP'          => (int) $isStick,
            'BaseRequest' => $this->vbot->config['server.baseRequest'],
        ], true);

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