String[] labels = { SECRET, CONFIDENTIAL, PRIVATE, "ABC", "XYZ" };
try {
VisibilityLabelsResponse resp = VisibilityClient.addLabels(conf, labels);
List<RegionActionResult> results = resp.getResultList();
if (results.get(0).hasException()) {
NameBytesPair pair = results.get(0).getException();
Throwable t = ProtobufUtil.toException(pair);
LOG.debug("Got exception writing labels", t);
if (t instanceof VisibilityControllerNotReadyException) {
vcInitialized.set(false);
LOG.warn("VisibilityController was not yet initialized");