{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"///"}]}
/// becomes `Visited` when it is first examined by the DFS and is `Settled` when all nodes
/// "discovered"/"finished" or "white"/"grey"/"black". Each node begins the search with no status,
/// reachable from it have been examined. This allows us to differentiate between "tree", "back"