Hello, I'm trying to use `brandes_betweenness_centrality` with named vertexes but so far I haven't managed to get it working. These are the two approaches I tried: 1. passing an iterator_property_map on the vertex_index: https://gist.github.com/f02f18f30f0eef146a58#file_betweenness_named_graph.cp... 2. passing a property_map on a float inside the vertex: https://gist.github.com/f02f18f30f0eef146a58#file_betweenness_named_graph2.c... And these are the compile logs for the first file: clang: https://gist.github.com/f02f18f30f0eef146a58#file_compile_clang.log gcc:https://gist.github.com/f02f18f30f0eef146a58#file_compile_gcc.log and the second file: clang: https://gist.github.com/f02f18f30f0eef146a58#file_compile_clang2.log gcc: https://gist.github.com/f02f18f30f0eef146a58#file_compile_gcc2.log What I'm doing wrong? Thanks in advance