Improved:  Fix some bugs Spotbugs reports
There is no usage of generateRandomFinNumber OOTB
I though put: // FIXME number is null!
because it passes null to UtilValidate.getLuhnCheckDigit if isId is true
@@ -297,6 +297,7 @@ public final class FinAccountHelper {
}
if (isId) {
+ // FIXME number is null!
int check = UtilValidate.getLuhnCheckDigit(number);
numberBuilder.append(check);
number = numberBuilder.toString();
