最近用上了 GitHub Copilot，它的能力不时让我惊叹，于是越来越多地面向 tab 编程，机械键盘的损耗都小了许多:-p

org/apache/http/conn/ConnectionKeepAliveStrategy.java

C++ 也有final关键字，在C++11及以后的标准中引入了final，final关键字用于修饰类、成员函数和虚函数，表示它们是最终版本，不能被继承或重写。

org/apache/http/impl/client/HttpClientBuilder.java

org/apache/http/pool/AbstractConnPool.java

httpclient-4.5.10-sources.jar!/org/apache/http/impl/client/HttpClientBuilder.java

druid-1.2.11-sources.jar!/com/alibaba/druid/pool/DruidDataSourceFactory.java

org/apache/commons/pool2/impl/GenericObjectPoolConfig.java

org/apache/commons/pool2/impl/GenericObjectPool.java

org/apache/commons/pool2/impl/GenericObjectPool.java