/**
 * Returns list of currencies for which conversion can be done.
 *
 * @return array List of three character currency codes, or null if conversion is not available.
 */
function caAvailableCurrenciesForConversion()
{
    require_once __CA_LIB_DIR__ . "/core/Plugins/CurrencyConversion/EuroBank.php";
    try {
        $va_currency_list = WLPlugCurrencyConversionEuroBank::getCurrencyList();
        sort($va_currency_list);
        return $va_currency_list;
    } catch (Exception $e) {
        return null;
    }
}