function populate()
 {
     global $wpdb, $bp;
     parent::populate();
     $parent_id = $wpdb->get_var($wpdb->prepare("SELECT g.parent_id FROM {$bp->groups->table_name} g WHERE g.id = %d", $this->id));
     if (is_null($parent_id)) {
         bp_group_hierarchy_debug('Could not load parent_id column from database.  Hierarchical processing is disabled.');
         $this->parent_id = 0;
     } else {
         $this->parent_id = $parent_id;
     }
     $this->true_slug = $this->slug;
     $this->slug = $this->path = $this->buildPath();
 }