public void setId(final Collection<Long> newSet) {
        if (newSet == null) {
            setSet(null);
        } else {
            setSet(new TreeSet<>(newSet));
        }
    }
HERE FOR XML JAXB serialisation ..... DO NOT REMOVE
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/IdSet.java