function upgrade()
{
$wpw = new PHPWikiPageWrapper($this->gid);
$nbGroupPending = null;
$nextId = $wpw->getNextGroupWithWiki($this->gid, $nbGroupPending);
$html .= 'Nb project to go: ' . $nbGroupPending . '<br>';
$url = PHPWIKI_PLUGIN_BASE_URL . '/admin/index.php?group_id=' . $nextId . '&view=upgrade';
$href = '<a href="' . $url . '">' . $nextId . '</a>';
$html .= 'Next project: ' . $href . '<br>';
print $html;
$wpw->upgrade();
}
