public function get_full_information($modinfo = null)
 {
     $information = parent::get_full_information($modinfo);
     // Grouping conditions.
     if ($this->item->groupingid > 0) {
         $information .= get_string('requires_grouping', 'condition', groups_get_grouping_name($this->item->groupingid));
     }
     return $information;
 }