make Disconnect work with trace contexts.
13 void Set (std::string path, Attribute value);
14 void SetDefault (std::string name, Attribute value);
15 void SetGlobal (std::string name, Attribute value);
16 void Connect (std::string path, const CallbackBase &cb);
17 void Disconnect (std::string path, const CallbackBase &cb);
18 void ConnectWithContext (std::string path, const CallbackBase &cb);
19 void DisconnectWithContext (std::string path, const CallbackBase &cb);
21 void RegisterRootNamespaceObject (Ptr<Object> obj);
22 void UnregisterRootNamespaceObject (Ptr<Object> obj);