final DateMidnight firstMonday = beginningOfLessonPeriod.withField(DateTimeFieldType.dayOfWeek(), 1);
final DateMidnight thisMonday = new DateMidnight().withField(DateTimeFieldType.dayOfWeek(), 1);
final Interval interval = new Interval(firstMonday, thisMonday);
return interval.toPeriod(PeriodType.weeks()).getWeeks();
}
public Set<WeeklyWorkLoad> getSortedWeeklyWorkLoads() {
return new TreeSet<WeeklyWorkLoad>(getWeeklyWorkLoadsSet());
}