return result; }
	public List<Exam> getEnroledExams(final ExecutionPeriod executionPeriod) {		final List<Exam> result = new ArrayList<Exam>();		for (final WrittenEvaluationEnrolment writtenEvaluationEnrolment : this				.getWrittenEvaluationEnrolments()) {			if (writtenEvaluationEnrolment.getWrittenEvaluation() instanceof Exam					&& writtenEvaluationEnrolment.isForExecutionPeriod(executionPeriod)) {				result.add((Exam) writtenEvaluationEnrolment.getWrittenEvaluation());			}		}		return result;	}