+ /** \brief add file for parsing, but not to the cache
+ *
+ * pkgIndexFiles origining from pkgSourcesList are included in
+ * srcpkgcache, the status files added via #AddStatusFiles are
+ * included in pkgcache, but these files here are not included in
+ * any cache to have the possibility of having a file included just
+ * for a single run like a local .deb/.dsc file.
+ *
+ * The volatile files do not count as "normal" sourceslist entries,
+ * can't be iterated over with #begin and #end and can't be
+ * downloaded, but they can be found via #FindIndex.
+ *
+ * @param File is an index file; pointer-ownership is transferred
+ */
+ void AddVolatileFile(pkgIndexFile * const File);
+ /** @return list of files registered with #AddVolatileFile */
+ std::vector<pkgIndexFile*> GetVolatileFiles() const;