+ virtual DCPTime full_length () const = 0;
+ virtual std::string identifier () const;
+
+ boost::shared_ptr<Content> clone () const;
+
+ void set_path (boost::filesystem::path);
+
+ std::string path_summary () const;
+
+ std::vector<boost::filesystem::path> paths () const {
+ boost::mutex::scoped_lock lm (_mutex);
+ return _paths;
+ }