@Override
public void onComplete(final Throwable failure, final Object result) {
if (failure != null) {
LOG.error("{}: Failed to register DataTreeChangeListener {} at path {}", logContext(),
getInstance(), registeredPath, failure);
} else {
@Override
public void onComplete(final Throwable failure, final Object result) {
if (failure != null) {
LOG.error("{}: Failed to register DataTreeChangeListener {} at path {}", logContext(),
getInstance(), registeredPath, failure);
} else {