Add JavaDoc

src/main/java/de/tum/in/www1/artemis/repository/CourseCompetencyRepository.java

@@ -158,6 +158,12 @@ default CourseCompetency findByIdWithExercisesAndLectureUnitsBidirectionalElseTh
         return getValueElseThrow(findByIdWithExercisesAndLectureUnitsBidirectional(competencyId), competencyId);
     }
 
+    /**
+     * Finds the set of ids of course competencies that are linked to a given learning object
+     *
+     * @param learningObject the learning object to find the course competencies for
+     * @return the set of ids of course competencies linked to the learning object
+     */
     default Set<Long> findAllIdsByLearningObject(LearningObject learningObject) {
         return switch (learningObject) {
             case LectureUnit lectureUnit -> findAllIdsByLectureUnit(lectureUnit);

src/main/java/de/tum/in/www1/artemis/service/ParticipantScoreService.java

@@ -217,6 +217,12 @@ public double getAverageOfAverageScores(Set<Exercise> exercises) {
                 .orElse(0.0);
     }
 
+    /**
+     * Get all users that participated in the given exercise.
+     *
+     * @param exercise the exercise for which to get all users that participated
+     * @return set of users that participated in the exercise
+     */
     public Set<User> getAllParticipatedUsersInExercise(Exercise exercise) {
         if (exercise.isTeamMode()) {
             return teamScoreRepository.findAllUsersWithScoresByExercise(exercise);