https://blog.wongcw.com/2022/01/21/google-workplace%e7%8f%be%e5%9c%a8%e7%b6%b2%e9%a0%81%e7%89%88google-chat%e4%b8%ad%e6%8f%90%e4%be%9b%e6%9b%b4%e5%bc%b7%e5%a4%a7%e7%9a%84%e7%b7%a8%e8%bc%af%e9%ab%94%e9%a9%97/