minus
operator fun <Unit : TimeUnit> TimePeriod<Unit>.minus(other: TimePeriod<Unit>): TimeDifference<Unit>
operator fun <Unit : NanosecondOrBigger, TimeUnit> TimePeriod<TimeUnit.Nanosecond>.minus(difference: TimeDifference<Unit>): TimePeriod<TimeUnit.Nanosecond>
operator fun <Unit : SecondOrBigger, TimeUnit> TimePeriod<TimeUnit.Second>.minus(difference: TimeDifference<Unit>): TimePeriod<TimeUnit.Second>
operator fun <Unit : MinuteOrBigger, TimeUnit> TimePeriod<TimeUnit.Minute>.minus(difference: TimeDifference<Unit>): TimePeriod<TimeUnit.Minute>
operator fun <Unit : HourOrBigger, TimeUnit> TimePeriod<TimeUnit.Hour>.minus(difference: TimeDifference<Unit>): TimePeriod<TimeUnit.Hour>
operator fun <Unit : DayOrBigger, TimeUnit> TimePeriod<TimeUnit.Day>.minus(difference: TimeDifference<Unit>): TimePeriod<TimeUnit.Day>
operator fun <Unit : MonthOrBigger, TimeUnit> TimePeriod<TimeUnit.Month>.minus(difference: TimeDifference<Unit>): TimePeriod<TimeUnit.Month>
operator fun TimePeriod<TimeUnit.Year>.minus(difference: TimeDifference<TimeUnit.Year>): TimePeriod<TimeUnit.Year>
Subtracts a TimeDifference from this TimePeriod.