return (_disposition == null ? "" : _disposition) + (_list.size() == 0 ? "" : _list.toString());
if (_list == null) { return _disposition; }    return _disposition + _list.toString(21 + _disposition.length());
    public String toString() {        if (_disposition == null && _list.size() == 0) {            return null;        }        return (_disposition == null ? "" : _disposition)                + (_list.size() == 0 ? "" : _list.toString());    }