function has_sticky( $id, $network_level_or_blog_id = null ) {
            if ( $this->should_use_network_notices( $id, $network_level_or_blog_id ) ) {
                $notices = $this->_network_notices;
            } else {
                $notices = $this->get_site_notices( $network_level_or_blog_id );
            }

            return $notices->has_sticky( $id );
        }