docs: public int searchRight(
      SearchComparator  comp,
      Object            searchKey)
    {
      int idx = -1;
      int bot = middleIndex();
      int right = rightMostIndex();
      if (bot > right)
        {
          String x =
           "bot = " + bot + ", right = " + right;
          throw new OptimisticDepthException(x);
        }
      if (comp.type() == SearchComparator.EQ)
        idx = findEqual(comp, bot, right, searchKey);
      else
        idx = findGreater(comp, bot, right, searchKey);
  
      return idx;
    }