code: void mirror() {
      for (int x = 0; x < bitMatrix.getWidth(); x++) {
        for (int y = x + 1; y < bitMatrix.getHeight(); y++) {
          if (bitMatrix.get(x, y) != bitMatrix.get(y, x)) {
            bitMatrix.flip(y, x);
            bitMatrix.flip(x, y);
          }
        }
      }
    }
docs: Mirror the bit matrix in order to attempt a second reading.