1.Kotlin 泛型中的 in 和 out
https://www.jianshu.com/p/c5ef8b30d768
2.使用Charles为Android设备抓取https请求的包
https://www.cnblogs.com/wangyiwei/p/7773397.html
https://blog.csdn.net/Haocxx/article/details/89184495
3.JAVA泛型详解
https://segmentfault.com/a/1190000019377645?utm_source=tag-newest
4.Kotlin构造函数
https://blog.csdn.net/xlh1191860939/article/details/79412319
