mm.put("key2", "value1");
mm.put("key2", "value2");
final SimpleClient client = getClient();
client.send(new KeySetRequest(name));
PortableCollection result = (PortableCollection) client.receive();
Collection<Data> keySet = result.getCollection();
assertEquals(2, keySet.size());
String s = (String) ss.toObject(keySet.iterator().next());