docs: void findInsertPointInRight(
      Object           new1,
      NodeInsertPoint  point)
    {
      int r = rightMostIndex();
      int m = midPoint();
      if (r <= m)
        {
          String x =
           "Erroneous call to findInsertPointInRight(). "  +
           "rightMostIndex() = " + r +
           ", midPoint() = "     + m + ".";
          throw new OptimisticDepthException(x);
        }
      findIndex(m+1 , r, new1, point);
    }