public void addAllEntities(final Collection<T> s) {
        if (s != null) {
            for (final T t : s) {
                add(t);
            }
        }
    }
@param id update so as not to change JAXB
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/EntityIdSet.java