public interface DecoratingProxy
Note that this interface should just be implemented if the decorated class is not within the hierarchy of the proxy class to begin with. In particular, a "target-class" proxy such as a Spring AOP CGLIB proxy should not implement it since any lookup on the target class can simply be performed on the proxy class there anyway.
Defined in the core module in order to allow
(and potential other candidates without spring-aop dependencies) to use it
for introspection purposes, in particular annotation lookups.
In case of an AOP proxy, this will be the ultimate target class, not just the immediate target (in case of multiple nested proxies).