protected void registerCompletionListener() {
if (!syncListenerRegistrations.isEmpty() && completionRegistrationId == null) {
synchronized (completionRegistrationMutex) {
if (completionRegistrationId == null) {
final CacheService service = getService();
CacheEventListener entryListener = new CacheCompletionEventListener();
completionRegistrationId =
service.registerListener(getDistributedObjectName(), entryListener);
}
}
}
}
