Special case handling in CronExpressionDescriptor bypasses certain cron and parsing fails

[SAINFY]

getTimeOfDayDescription(String[] expressionParts) in CronExpressionDescriptor .java

// Handle special cases first

line: 178 } else if (minutesExpression.contains("-") && !StringUtils.containsAny(hoursExpression, specialCharacters)) {
Above condition does not cater for cron expression "0 0-30/2 17 ? * MON-FRI"
It ignores that minute expression can also have '/' when condition 2 is true.
To reproduce see test case below.

The following additional check fixed the issue
} else if (minutesExpression.contains("-") && !minutesExpression.contains("/") && !StringUtils.containsAny(hoursExpression, specialCharacters)) {

Test case for the above [not sure if I have named it appropriately - please check]
@test
public void testEveryXMinutePastTheHourWithInterval() throws Exception {
Assert.assertEquals("Every 2 minutes, minutes 00 through 30 past the hour, at 5:00 PM, Monday through Friday",
CronExpressionDescriptor.getDescription("0 0-30/2 17 ? * MON-FRI"));
}

In my opinion this code can be improved if the special case handling is either removed by not having to code for special cases or by enhancing the special case scenarios. certainly if the parsing logic in description builders can handle the scenarios then special cases handling will not be required.