@Override
            public String convertToString(Boolean[] array) {
                if (array.length == 0) {
                    return "";
                }
                StringBuilder buf = new StringBuilder(array.length);
                for (int i = 0; i < array.length; i++) {
                    buf.append(array[i] == null ? '-' : (array[i].booleanValue() ? 'T' : 'F'));
                }
                return buf.toString();
            }