@Test
public void removeFeature() {

    final Thing withFeatures =
            ImmutableThing.of(THING_ID, ACL, ATTRIBUTES, FEATURES, LIFECYCLE, REVISION, MODIFIED,
                    CREATED, METADATA);
    final Thing withoutFluxCapacitor = withFeatures.removeFeature(FLUX_CAPACITOR_ID);
    assertThat(withoutFluxCapacitor).hasNotFeatureWithId(FLUX_CAPACITOR_ID);
}