@NotNull
  private GraphEdges getDCorrectEdges(int rowIndex) {
    int endCalculateIndex = Math.min(rowIndex + WALK_SIZE, myGraph.nodesCount() - 1);
    GraphEdges graphEdges = new GraphEdges(endCalculateIndex);

    for (int i = endCalculateIndex; i > rowIndex; i--) {
      graphEdges = oneUpStep(graphEdges);
    }
    return graphEdges;
  }
@NotNull
  private GraphEdges getDCorrectEdges(int rowIndex)