private function _createPreauthorization($response)
    {
        $model = new Preauthorization();
        $model->setId($response['id']);
        $model->setAmount($response['amount']);
        $model->setCurrency($response['currency']);
        $model->setStatus($response['status']);
        $model->setLivemode($response['livemode']);
        $model->setCreatedAt($response['created_at']);
        $model->setUpdatedAt($response['updated_at']);
        $model->setPayment($this->_convertResponseToModel($response['payment'], "payment"));
        $model->setClient($this->_convertResponseToModel($response['client'], "client"));
        $model->setTransaction(isset($response['transaction']) ? $this->_convertResponseToModel($response['transaction'], 'transaction') : null);
        $model->setAppId($response['app_id']);
        $model->setDescription($response['description']);
        return $model;
    }