private Neighbors<V, E> getSuccessors(V v) {
Neighbors<V, E> neighbors = successorMap.get(v);
if (neighbors == null) {
neighbors = new Neighbors<V, E>(v, Graphs.successorListOf(graph, v));
successorMap.put(v, neighbors);
}
return neighbors;
}
private void addUnseenChildrenOf(V vertex) {
for (E edge : specifics.edgesOf(vertex)) {
if (nListeners != 0) {
fireEdgeTraversed(createEdgeTraversalEvent(edge));
}
V oppositeV = Graphs.getOppositeVertex(graph, edge, vertex);
if (isSeenVertex(oppositeV)) {
encounterVertexAgain(oppositeV, edge);
} else {
encounterVertex(oppositeV, edge);
}
}
}