code: public String getList() {
      String result = "";
      int i = 1;
  
      for (String s : mReps.keySet()) {
        result += (i++) + ". key='" + s + "', value='" + mReps.get(s) + "'\n";
      }
  
      return result;
    }
docs: Returns a String list of current representations, useful for debugging