NodeEngine nodeEngine = getNodeEngine();
SerializationService serializationService = nodeEngine.getSerializationService();
BufferObjectDataOutput out = createDataOutput(serializationService);
out.writeInt(tasks.size());
Iterator<Operation> iter = tasks.iterator();
while (iter.hasNext()) {
Operation task = iter.next();
if (task instanceof NonThreadSafe) {
serializationService.writeObject(out, task);