docs: private boolean containsBlackPoint(int a, int b, int fixed, boolean horizontal) {
  
      if (horizontal) {
        for (int x = a; x <= b; x++) {
          if (image.get(x, fixed)) {
            return true;
          }
        }
      } else {
        for (int y = a; y <= b; y++) {
          if (image.get(fixed, y)) {
            return true;
          }
        }
      }
  
      return false;
    }