virtual ~MetadataField();
virtual MetadataPtr copy () = 0;
virtual void save_data (ARDOUR::SessionMetadata & data) const = 0;
virtual void load_data (ARDOUR::SessionMetadata const & data) = 0;
virtual ~MetadataField();
virtual MetadataPtr copy () = 0;
virtual void save_data (ARDOUR::SessionMetadata & data) const = 0;
virtual void load_data (ARDOUR::SessionMetadata const & data) = 0;