This line visits the AST tree, starting at the compilation unit (the top-most node), and queries for a list of all method declarations.

这一行访问ast树，起步于编辑单元(最顶层的节点)，并且查询所有的方法声明。

youdao

This line visits the AST tree, starting at the compilation unit (the top-most node), and queries for a list of all method declarations.

这一行访问ast树，起步于编辑单元(最顶层的节点)，并且查询所有的方法声明。

youdao