IDE icons for AspectJ AOP Advice points

How are the AspectJ AOP advice points in the editor gutter generated/determined?  I commented out the annotation that causes the AOP advice, but the icon remained.

Then I recompiled the class: no change the icon remains.

Then I rebuilt the entire project, which cleans out all class files: still, the aspectj advice point icon remains.

So i'm stumped.  

a. What were the original triggers so that IJ determines that a method is an AOP advised one?
b.  When/how does IJ recalculate the conditions.  So , for in my case, the condition no longer holds but IJ decides it is "from here to eternity"