public function addBreak(BreakInputModel $model) : ServiceResponse
 {
     $lectureId = $model->getLectureId();
     $lecture = $this->dbContext->getLecturesRepository()->filterById(" = {$lectureId}")->findOne();
     if ($lecture->getId() == null) {
         return new ServiceResponse(404, "Lecture not found.");
     }
     $breakStartDate = strtotime($model->getStartDate());
     $breakEndDate = strtotime($model->getEndDate());
     if ($breakStartDate >= $breakEndDate) {
         return new ServiceResponse(1, "Start date/time cannot be later than End date/time.", $model->getConferenceId());
     }
     $lectureModel = new LectureViewModel($lecture);
     if (!$this->contains($lectureModel, $model)) {
         return new ServiceResponse(1, "Break failed to add. Time is outside lecture time.", $model->getConferenceId());
     }
     $lectureBreaks = $this->dbContext->getLectureBreaksRepository()->filterByLectureId(" = {$lectureId}")->findAll();
     $conferenceId = $model->getConferenceId();
     foreach ($lectureBreaks->getLectureBreaks() as $break) {
         $otherBreakModel = new AddBreakViewModel($break);
         if ($this->compareTo($model, $otherBreakModel) == 0) {
             return new ServiceResponse(1, "Break failed to add. Timing conflicts with another break.", $model->getConferenceId());
         }
     }
     $break = new LectureBreak($model->getTitle(), $model->getDescription(), $model->getLectureId(), $model->getStartDate(), $model->getEndDate());
     $this->dbContext->getLectureBreaksRepository()->add($break);
     $this->dbContext->saveChanges();
     return new ServiceResponse(null, "Break added.", $model->getConferenceId());
 }