}

    interface Child {
        Parent getParent();
        Child getNextSibling();
    }

    interface GenericItem1<T> {
    }

    interface GenericItem2<T> {
    }

    interface  GenericChild<T extends GenericItem1<? extends T>> extends GenericItem1<T> {
        <U extends GenericItem2<? super U>> void method(GenericItem2<U> p);
    }

        types2 == types
    }

    def "inspects cyclic generic types"() {
        expect:
        def types = inspector.getReachableTypes(GenericChild)
        types == [GenericItem1, GenericItem2, GenericChild] as Set

        def types2 = inspector.getReachableTypes(GenericChild)
        types2.is(types)
    }