First, thank you for developing the excellent looking GATB library. I'm excited to use it to test out some new ideas, but I had a few basic questions about using the de Bruijn graph. First, I was curious how I retrieve a de Bruijn graph node given the k-mer to which it corresponds. I looked through the documentation, but I couldn't really find any such ability. Does the de Brujin graph in GATB support this (looking up a node by its k-mer?). Second, the release notes for the new version mention that it is now possible to store arbitrary information at node vertices, but I couldn't seem to dig up how to do this in the documentation. Are there any pointers to this?