code: public String getCommentLabel(Long id) {
      Map<String, String> valueMap = answers.get(id);
      if (valueMap != null && !valueMap.isEmpty()) {
        Set<Entry<String,String>> entrySet = valueMap.entrySet();
        List<String> labels = entrySet.stream()
          .map(entry -> String.format("%s / %s", entry.getKey(), entry.getValue()))
          .collect(Collectors.toList());
        
        return StringUtils.join(labels, " - ");
      }
      
      return null;
    }
docs: Returns comment label as string
  
  @param id comment id
  @return comment label as string