Uff, about 30 different usages.
E.g in the InjectionPointProducer, DecoratorInjectionFactory etc
But the main use case is probably the InjectionTargetImpl.

        for (InjectionPoint injectionPoint : getInjectionPoints())

        {

            if (injectionPoint.getMember().getDeclaringClass().equals(type))

This happens in various situations, while injecting fields, members, parameters, etc.