sb.append(refresh);
sb.append(expire);
toString() {	StringBuffer sb = toStringNoData();	if (host != null) {		sb.append(host);		sb.append(" ");		sb.append(admin);		sb.append(" (\n\t\t\t\t\t");		sb.append(serial);		sb.append("\t; serial\n\t\t\t\t\t");		sb.append(refresh);		sb.append("\t; refresh\n\t\t\t\t\t");		sb.append(retry);		sb.append("\t; retry\n\t\t\t\t\t");		sb.append(refresh);		sb.append("\t; refresh\n\t\t\t\t\t");		sb.append(minimum);		sb.append(")\t; minimum");	}	return sb.toString();}