class ImmutableThing implements Thing {

    @Override
    public Thing removeFeatureProperties(final String featureId) {
        return (null != features) ? setFeatures(features.removeProperties(featureId)) : this;
    }

    private  ImmutableThing(@Nullable final ThingId thingId,
            @Nullable final AccessControlList acl,
            @Nullable final PolicyId policyId,
            @Nullable final ThingDefinition definition,
            @Nullable final Attributes attributes,
            @Nullable final Features features,
            @Nullable final ThingLifecycle lifecycle,
            @Nullable final ThingRevision revision,
            @Nullable final Instant modified,
            @Nullable final Instant created,
            @Nullable final Metadata metadata);

}