[Boost-users] [BGL] direct access to compressed_sparse_row vectors?

In the header file I find: // private: non-portable, requires friend templates --cut-- std::vector<EdgeIndex> m_rowstart; std::vector<Vertex> m_column; I already have a graph stored as a BGL adjacency_list and now I want to use a 3rd-party library (SCOTCH) which takes its input also in the CSR format. As I can see from the docs, there is no standardized interface to retrieve the raw CSR representation. This way, I either have to rely on the above members not being private, or myself effectively duplicating the already existing code for constructing the CSR representation. Am I overlooking something?