});
TestHelpers.assertThrows("Should reject bulk additions to the set",
UnsupportedOperationException.class, new Runnable() {
@Override
public void run() {
set.addAll(Lists.newArrayList(new Utf8("white"), new Utf8("black")));
}
});
TestHelpers.assertThrows("Should reject removals from the set",
UnsupportedOperationException.class, new Runnable() {
@Override