public String getNantPath() {
        return nantPath;
    }
@Test
    public void shouldNotUpdateAllItsAttributesWhenNotPassedInAsAttributes() {
        NantTask nant = new NantTask();
        Map<String, Object> attributes = new HashMap<>();
        attributes.put(BuildTask.BUILD_FILE, null);
        attributes.put(NantTask.NANT_PATH, null);
        nant.setConfigAttributes(attributes);
        assertThat(nant.getBuildFile(), is(nullValue()));
        assertThat(nant.getNantPath(), is(nullValue()));
    }