private function create_anonymous_group()
{
// Create the anonymous group
$group = UserGroup::create(array('name' => _t('anonymous')));
if (!$group) {
return false;
}
$group->grant('post_entry', 'read');
$group->grant('post_page', 'read');
$group->deny('post_unpublished');
// Add the anonymous user to the anonymous group
$group->add(0);
}