We need to add one thing to this file to extend the policy definition for class instance-level authorization: an optional relationship parameter associated with a permission statement.
我们需要向这个文件添加一个东西为类实例级授权扩展策略定义：一个与许可权语句相关的可选关系参数。
3
Verbose GC logs give insight into the operation of the garbage collector and can give hints about policy and parameter choices.