public class CourseLookupSession
    implements org.osid.course.CourseLookupSession {
    
    private org.osid.course.CourseLookupSession courseLookupSession;
    
    @OSID
    public org.osid.course.CourseList getCourses()
        throws org.osid.OperationFailedException,
               org.osid.PermissionDeniedException {
              
        return (processCourses(this.courseLookupSession.getCourses()));
    }
    
    private org.osid.course.CourseList processCourses(org.osid.course.CourseList courses) 
        throws org.osid.OperationFailedException,
               org.osid.PermissionDeniedException {
              
        MutableCourseList ret = new MutableCourseList();
        while (courses.hasNext()) {
            ret.add(processCourse(courses.getNextCourse())); 
        }
        ret.done();
        return (ret);
    }
    
    private org.osid.course.Course processCourse(org.osid.course.Course course) 
        throws org.osid.OperationFailedException,
               org.osid.PermissionDeniedException {
               
        if (course.isGraded()) {
            return (processGradingOptions(course));
        } else {
            return (course);
        }
    }
    
    private org.osid.course.Course processGradingOptions(org.osid.course.Courss course) 
        throws org.osid.OperationFailedException,
               org.osid.PermissionDeniedException {
               
        Collection<org.osid.grading.GradeSystem> mappedGradeSystems = new ArrayList<>();
        try (org.osid.grading.GradeSystemList gradeSystems = course.getGradingOptions()) {
            while (ids.hasNext()) {
                org.osid.grading.GradeSystem gradeSystem = gradeSystems.getNextGradeSystem();
                try {
                    mappedGradeSystems.add(getNewGradingOption(gradeSystem.getId()));
                } catch (org.osid.NotFoundException nfe) {
                    mappedGradeSystems.add(gradeSystem);
               }
            }                        
        }
        return (mapCourseToNewGradeSystems(course, mappedGradeSystems);
    }
    
    private org.osid.grading.GradeSystem getNewGradingOption(org.osid.id.Id gradeSystemid)
        throws org.osid.NotFoundException,
               org.osid.OperationFailedException,
               org.osid.PermissionDeniedException {
              
        try (
    }