code: protected void setCommentLabel(Long id, String caption, String value) {
      Map<String, String> valueMap = answers.get(id);
      if (valueMap == null) {
        valueMap = new LinkedHashMap<>();
      }
      
      valueMap.put(caption, value);
      answers.put(id, valueMap);
    }
docs: Sets a label for a specified comment
  
  @param id comment id
  @param caption caption
  @param value value