private Summary() {
public Summary(MultiLanguageString title, MultiLanguageString summaryText, Integer studentsNumber, Boolean isExtraLesson, Professorship professorship, String teacherName, Teacher teacher, Shift shift, Lesson lesson, YearMonthDay date, OldRoom room, Partial hour) {
    private Summary() {	super();	setRootDomainObject(RootDomainObject.getInstance());    }