return builder;
        }

        @Override
        protected Activation.Builder transformActivation_File(
                Supplier<? extends Activation.Builder> creator, Activation.Builder builder, Activation target) {
            stk.push(nextFrame("file", Activation::getFile));
            Optional.ofNullable(target.getFile());

        boolean modified = false;
        for (Profile profile : model.getProfiles()) {
            Activation activation = profile.getActivation();
            if (activation != null) {
                // restore activation
                profile = profile.withActivation(activations.get(profile.getId()));
                modified = true;
            }
            profiles.add(profile);
        }

    @Test
    void testJdkActivation() throws Exception {
        Properties props = new Properties();
        props.put("java.version", "1.5.0_15");

        PomTestWrapper pom = buildPom("jdk-activation", props, null);
        assertEquals(3, pom.getMavenProject().getActiveProfiles().size());
        assertEquals("PASSED", pom.getValue("properties/jdkProperty3"));