public static <V> void traverse(UnweightedGraph<V> unweightedGraph, V start, final Consumer<V> onDiscover, final Consumer<V> onFinish) {

traverse(unweightedGraph.graph, start, onDiscover, onFinish);

}

private static <V> void traverse(GraphV2<V, V> graph, V start, Consumer<V> onDiscover, Consumer<V> onFinish) {

Map<V, DFSStatus> map = new HashMap<>();

DFSCore.traverse(start, v -> graph.edgeMap.get(v), v -> v, map::get, map::put, new DFSVisitorBase<V, V>() {

@Override

public void onDiscovered(V vertex, int depth, VisitorStopper stopper) {

onDiscover.accept(vertex);

}

@Override

public void onFinish(V vertex) {

onFinish.accept(vertex);

}

});

}