-ContentList overlaps (ContentList cl, function<bool (shared_ptr<const Content>)> part, DCPTime from, DCPTime to)
+using std::function;
+using std::shared_ptr;
+using namespace dcpomatic;
+
+
+ContentList overlaps (shared_ptr<const Film> film, ContentList cl, function<bool (shared_ptr<const Content>)> part, DCPTime from, DCPTime to)