我们曾经做一个项目：客户坚持要为每一个公用类和方法写注释。
We were on a project where the client insisted on Javadoc comments for every public class and method.
我们认为这是不值得花时间做的事，除非是象收费公司和公用类稳定的公司。
We just don't think it's worth the effort except for very stable businesses such as toll roads or utilities.
分析API通过提供一个公用的访问者类和抽象查询机制，消除了和访问AST节点相关联的大部分挑战。
The analysis API eliminates most of the challenges associated with visiting AST nodes by providing a common visitor class and abstracting the query mechanism.
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