mutable boost::signals2::signal<void ()> Changed;
/** Third parameter is true if signals are currently being emitted frequently */
mutable boost::signals2::signal<void (boost::weak_ptr<Content>, int, bool)> ContentChanged;
mutable boost::signals2::signal<void ()> Changed;
/** Third parameter is true if signals are currently being emitted frequently */
mutable boost::signals2::signal<void (boost::weak_ptr<Content>, int, bool)> ContentChanged;