[QUESTION] 如何清理字节码动态生成的类的缓存？

### 请描述您的问题
*使用动态加载机制，每次都会改一下ClassLoader 。第一次用A ClassLoader 内fastjson2 反序化 class时，会生成类并缓存起来，第二次用B ClassLoader时，进行反序化class ，会报错。 希望提供一个清理缓存类的工具类。

Start by reproducing the reported sequence: deserialize with one ClassLoader, then with a different ClassLoader, and observe the cache-related failure. Trace the bytecode-generated class cache involved in fastjson2 deserialization; done means a supported cleanup mechanism is defined and the second ClassLoader can deserialize successfully without the reported error.

Written by the indexing model from the issue text.