docs: @Override
    public boolean containsValue(Object valObj) {
      reindexItems();
  
      if (valObj instanceof Integer) {
        int val = (Integer) valObj;
        for (int i = 0; i < sortedValues.length; i++) {
          if (sortedValues[i] == val) {
            return true;
          }
        }
      }
      return false;
    }