/**
* Updates last activity time to protect session from expiring.
*/
public function keepAlive()
{
$this->disableUpdate();
// update last activity time
$sessionEditor = new $this->sessionEditorClassName($this->session);
$sessionEditor->update(array('lastActivityTime' => TIME_NOW));
if ($this->virtualSession instanceof SessionVirtual) {
$virtualSessionEditor = new SessionVirtualEditor($this->virtualSession);
$virtualSessionEditor->updateLastActivityTime();
}
}
