scala/scala

  override def computeTimes(sunset: LocalTime): Stream[(LocalTime, SchedulingCapacities)] = {
    val timesStream =
      Stream.iterate(scheduleWeekdayTimes.firstTime.forSunset(sunset))(_ plusMinutes 15)

    def loop(scheduleWeekdayTimesSpans: List[ScheduleWeekdayTimesSpan],
             times: Stream[LocalTime]): Stream[(LocalTime, SchedulingCapacities)] =
      scheduleWeekdayTimesSpans match {
        case Nil           => Stream.Empty
        case span :: spans =>
          val repeated = times zip Stream.continually(span.schedulingCapacityies)
          val limited = span.untilClosingOf.map(scheduleWeekdayTimes.lastTimes(_)) match {
            case None                 => repeated.take(span.repeatCount)
            case Some(stopRepeatTime) => repeated.takeWhile { case (t, _) => !t.isAfter(stopRepeatTime) }   // the question relates to this line
          }
          limited ++ loop(spans, times.drop(limited.length))
      }

    loop(scheduleWeekdayTimesSpans, timesStream)
  }