desers.addDeserializer(IpAndPort.class, new IpAndPortDeserializer());
sers.addSerializer(IpAndPort.class, new IpAndPortSerializer());
// for KeyRange, only manual serializer; deserializer with mix-ins
sers.addSerializer(KeyRange.class, new KeyRangeSerializer());
desers.addDeserializer(KeySpace.class, new KeySpaceDeserializer());
sers.addSerializer(KeySpace.class, new KeySpaceSerializer());
desers.addDeserializer(StorableKey.class, new StorableKeyDeserializer());
sers.addSerializer(StorableKey.class, new StorableKeySerializer());
// desers.addDeserializer(ClientId.class, new ClientIdDeserializer());
// sers.addSerializer(ClientId.class, new ClientIdSerializer(_cfgUseNumerics));