public int compareTo(ExamDifficultyWeight other) {
return new CompareToBuilder()
.append(studentSizeTotal, other.studentSizeTotal)
.append(maximumDuration, other.maximumDuration)
.append(exam instanceof LeadingExam, other.exam instanceof LeadingExam)
.append(exam.getId(), other.exam.getId())
.toComparison();
}
