The "declare-parents" type of advice can add additional interface implementations to a bean (a.k.a. "mix-ins").

In Spring AOP, the "this()" designator matches against the type of the _AOP proxy_.
So, when combining these two features, one can use this() to match mix-in interfaces added by declare-parents:

<aop:config>                                                                                                                                          
  <aop:aspect id="usageTrackerAspect" ref="simpleAspectBean">                                                                                         
    <aop:declare-parents types-matching="foo.bar.aop.SimpleTarget+" implement-interface="foo.bar.aop.MyMixin" 
                         default-impl="foo.bar.aop.MyMixinImpl"/>
    <aop:around pointcut="this(foo.bar.aop.MyMixin)" method="around"/>                                                                                
  </aop:aspect>                                                                                                                                       
</aop:config>

Above example works as expected, but IDEA shows "_This advice intercepts no methods_".
In practice above example is more often used in "binding form", with the around advice method having a MyMixin m parameter, and using "this(m) as pointcut.

Issue was resolved