Java8新特性：Function接口和Lambda表达式参考

Lambda基本：https://blog.csdn.net/wargon/article/details/80656575

Function接口结合Lambda表达式实现：

https://blog.csdn.net/huo065000/article/details/78964382

https://segmentfault.com/a/1190000012248864

方法引用与this:

https://www.cnblogs.com/aoeiuv/p/5911692.html

https://blog.csdn.net/blacksoil55/article/details/78359045