In section about [6.10. Defining New Advice Types](https://docs.spring.io/spring-framework/docs/current/reference/html/core.html#aop-extensibility) in last sentence link to javadoc [org.springframework.aop.framework.adapter](https://docs.spring.io/spring-framework/docs/6.0.0/javadoc-api/org/springframework/aop/framework/adapter/package-frame.html)