code: private Map<String, Object> parseTSUIDsList(HttpQuery query) {
      final HashMap<String, Object> map = new HashMap<String, Object>();
      map.put("treeId", parseTreeId(query, true));
      
      final String tsquery = query.getQueryStringParam("tsuids");
      if (tsquery != null) {
        final String[] tsuids = tsquery.split(",");
        map.put("tsuids", Arrays.asList(tsuids));
      }
      
      return map;
    }
docs: Used to parse a list of TSUIDs from the query string for collision or not
  matched requests. TSUIDs must be comma separated.
  @param query The HTTP query to work with
  @return A map with a list of tsuids. If found, the tsuids array will be
  under the "tsuid" key. The map is necessary for compatability with POJO
  parsing.