code: public List<String> descriptionsForIds(List<String> _ids, boolean payload, boolean pretty) {
      List<String> descriptions = new ArrayList<String>();
    
      for (ServiceWrapper s : _cache) {
        if (_ids.isEmpty() || _ids.contains(s.id)) {
          StringBuffer buf = serviceDesciption(payload, pretty, s);
          descriptions.add(buf.toString());
        }
      }
    
      return descriptions;
    }
docs: Generate a list of the descriptions of the cache entries (services).
  
  @param _ids list of the ids to use
  @param payload if you want to see the payloads
  @param pretty if you want those payloads pretty printed
  @return list of description strings