orderedNodeConnectionsBuilder.add(new NodeConnection.Succ<>(thisNode));
        predecessorCount++;
        successorCount++;
      } else if (incidentEdge.nodeV().equals(thisNode)) { // incidentEdge is an inEdge
        N predecessor = incidentEdge.nodeU();

        Object existingValue = adjacentNodeValues.put(predecessor, PRED);
        if (existingValue != null) {