How to use the calendar-utils.getWeekView function in calendar-utils

var days = calendarUtils.getWeekViewHeader({
        viewDate: viewDate,
        excluded: excluded,
        weekStartsOn: moment().startOf('week').day()
      }).map(function(day) {
        day.date = moment(day.date);
        day.weekDayLabel = formatDate(day.date, calendarConfig.dateFormats.weekDay);
        day.dayLabel = formatDate(day.date, calendarConfig.dateFormats.day);
        return day;
      });

      var startOfWeek = moment(viewDate).startOf('week');
      var endOfWeek = moment(viewDate).endOf('week');

      var eventRows = calendarUtils.getWeekView({
        viewDate: viewDate,
        weekStartsOn: moment().startOf('week').day(),
        excluded: excluded,
        events: filterEventsInPeriod(events, startOfWeek, endOfWeek).map(function(event) {

          var weekViewStart = moment(startOfWeek).startOf('day');

          var eventPeriod = getRecurringEventPeriod({
            start: moment(event.startsAt),
            end: moment(event.endsAt || event.startsAt)
          }, event.recursOn, weekViewStart);

          var calendarUtilsEvent = {
            originalEvent: event,
            start: eventPeriod.start.toDate()
          };