Hi, when using graph-tool from C++, you can use one or more PropertyMaps. In the documentation they are always given as an extra argument. Since graph-tool has internal PropertyMaps, is it possible to extract internal PropertyMaps out of the GraphInterface object? In pseudo code (like in the documentation): ``` void kcore_bind(GraphInterface& gi) { // Vertex property map of type int32_t typedef typename vprop_map_t<int32_t>::type vprop_t; vprop_t c = boost::any_cast<vprop_t>(gi.get_internal_vertex_property_map("foo")); gt_dispatch<>() ([&](auto& g){ kcore_decomposition(g, c.get_unchecked()); }, all_graph_views()) (gi.get_graph_view()); } ``` Is there a way to simulate the `get_internal_vertex_property_map` method? Gerion