if (@nodes) {
            $self->{to_gui}->enqueue(
                [private => '<pm-cb-g>',
                            'Time::Piece'->strptime($_->{createtime},
                                                    '%Y%m%d%H%M%S')
                                ->strftime('%Y-%m-%d %H:%M:%S'),
                            "New node: [id://$_->{node_id}|"
                                . $_->textContent =~ s/\n//r
                                . '] by [id://'
                                . "$_->{author_user}|$_->{authortitle}]",
                            NOT_DELETABLE])
                for grep ! exists $nodes{ $_->{node_id} }, reverse @nodes;
            @nodes{ map $_->{node_id}, @nodes} = ();
        }