https://blog.wongcw.com/2019/03/04/%e5%be%ae%e8%bb%9f%e9%96%8b%e5%a7%8b%e6%8e%a8%e9%80%81edge-for-ios-42-11-4%e7%89%88%e6%96%b0%e5%a2%9e%e5%8d%b3%e6%99%82%e7%bf%bb%e8%ad%af%e5%8a%9f%e8%83%bd/