/**
* calls the save of the parent class to save the object
*/
public function save()
{
return parent::save();
}
/**
* saves the quiz
* @param IzapChallenge $ch
* @return <boolean> true on success else false
*/
public function save(IzapChallenge $ch = null)
{
return parent::save(true, array('river' => false));
}