protected function get_expand_course_cache() {
        if ($this->cacheexpandcourse === null) {
            $this->cacheexpandcourse = cache::make('core', 'navigation_expandcourse');
        }
        return $this->cacheexpandcourse;
    }
protected function get_expand_course_cache() {
        if ($this->cacheexpandcourse === null) {
            $this->cacheexpandcourse = cache::make('core', 'navigation_expandcourse');
        }
        return $this->cacheexpandcourse;
    }
protected function get_expand_course_cache ( ) { if ( $ this -> cacheexpandcourse === null ) { $ this -> cacheexpandcourse = cache :: make ( 'core' , 'navigation_expandcourse' ) ; } return $ this -> cacheexpandcourse ; }
Returns a cache instance to use for the expand course cache.
@return cache_session
Returns a cache instance to use for the expand course cache .