public static final List<Integer> parseSecTypes(String types_) {
    List<Integer> result = new ArrayList<Integer>();
    String[] types = types_.split(",");
    for (int i = 0; i < types.length; i++) {
      int typeNum = secTypeNum(types[i]);
      if (typeNum != secTypeInvalid)
        result.add(typeNum);
    }
    return (result);
  }