src/main/java/seedu/address/model/ModelManager.java
@Override
    public void updateObservedExtraFilteredCourseList(Predicate<Course> predicate) {
        requireNonNull(predicate);
        filteredCourses.setPredicate(predicate);
    }
/**
     * Update Observed Extra Filtered Course List.
     */
Update Observed Extra Filtered Course List.
Update Observed Extra Filtered Course List .
@Override
    public void updateObservedExtraFilteredCourseList(Predicate<Course> predicate) {
        requireNonNull(predicate);
        filteredCourses.setPredicate(predicate);
    }
@ Override public void updateObservedExtraFilteredCourseList ( Predicate < Course > predicate ) { requireNonNull ( predicate ) ; filteredCourses . setPredicate ( predicate ) ; }
Update Observed Extra Filtered Course List.
Update Observed Extra Filtered Course List .