* @todo Combine this method with the one below into converter classes.
*/
static String[] toStringArray (Iso2Codes... isoCodes) {
if (isoCodes == null || isoCodes.length == 0)
throw new InvalidIsoCodeException("The isoCodes parameter is " +
"either null or empty (isoCodes: " + isoCodes + ").");
String[] results =
(String[]) ConvertUtils.convert(isoCodes, String[].class);