code: public static Map<Integer, String> loadSystemAttrIds() {
          try (BufferedReader reader = toReader("/r_values.ini")) {
              Map<Integer, String> map = new HashMap<>();
              String line;
              while ((line = reader.readLine()) != null) {
                  String[] items = line.trim().split("=");
                  if (items.length != 2) {
                      continue;
                  }
                  String name = items[0].trim();
                  Integer id = Integer.valueOf(items[1].trim());
                  map.put(id, name);
              }
              return map;
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
      }
docs: load system attr ids for parse binary xml.