private volatile long lastUpdateTime;
public MultiMapContainer(String name, MultiMapService service, int partitionId) {
super(name, service.getNodeEngine());
this.partitionId = partitionId;
this.lockNamespace = new DefaultObjectNamespace(MultiMapService.SERVICE_NAME, name);
final LockService lockService = nodeEngine.getSharedService(LockService.SERVICE_NAME);
this.lockStore = lockService == null ? null : lockService.createLockStore(partitionId, lockNamespace);
this.creationTime = Clock.currentTimeMillis();
}