private void fillPropertyList() {
    myPairs = new ArrayList<>();

    final List<IProperty> properties = myBundle.getProperties();
    for (IProperty property : properties) {
      final String key = property.getUnescapedKey();
      final String value = property.getValue();
      if (key != null) {
        myPairs.add(Couple.of(key, value != null ? value : NULL));
      }
    }
    myPairs.sort(new MyPairComparator());
  }
private void fillPropertyList()