public function guid($set = NULL)
{
if (func_num_args() == 1) {
$guid = $this->guid;
if ($set != NULL) {
if (!S::startsWith($set, 'psc-guid-')) {
$set = 'psc-guid-' . $set;
}
$set = HTML::string2id($set);
}
$this->guid = $set;
if ($this->guid != $guid && $this->hasClass($guid)) {
$this->removeClass($guid);
//unpublish
$this->publishGUID();
}
return $this;
}
if (!isset($this->guid)) {
$this->generateGUID();
}
return $this->guid;
}
