firstSecond

@get:JvmName(name = "dayFirstSecond")
val TimePeriod<TimeUnit.Day>.firstSecond: TimePeriod<TimeUnit.Second>
@get:JvmName(name = "hourFirstSecond")
val TimePeriod<TimeUnit.Hour>.firstSecond: TimePeriod<TimeUnit.Second>
@get:JvmName(name = "minuteFirstSecond")
val TimePeriod<TimeUnit.Minute>.firstSecond: TimePeriod<TimeUnit.Second>