BcAuthComponent::deleteSerial PHP Method

    public function deleteSerial()
    {
        $user = $this->user();
        if (!empty($this->fields['serial']) && $user) {
            $Model = $model = $this->getModel();
            $user[$this->userModel][$this->fields['serial']] = '';
            $Model->set($user);
            return $Model->save();
        }
    }