    @Test
    public void should_parse_inner_objects() {


        // Given
        final Plugin fakePlugin = createFakePlugin("<a>"
            + "<b>b</b>"
            + "</a>");

        // When
        final Map<String, Object> config = MavenConfigurationExtractor.extract((Xpp3Dom) fakePlugin.getConfiguration());

        // Then
        final Map<String, Object> expected = new HashMap<>();
        expected.put("b", "b");
        assertThat(config)
            .containsEntry("a", expected);

    }