- std::string serialize(SerializeFormat format, const Extensible* container, void* item) const;
- void unserialize(SerializeFormat format, Extensible* container, const std::string& value);
+ std::string serialize(SerializeFormat format, const Extensible* container, void* item) const CXX11_OVERRIDE;
+ void unserialize(SerializeFormat format, Extensible* container, const std::string& value) CXX11_OVERRIDE;