I’m trying to use Magento 2 Documentation to implement my custom credit card module payment, but i’m not able to understand the way Payment Provider Gateway works.

I folowed this doc: http://devdocs.magento.com/guides/v2.2/payments-integrations/bk-payments-integrations.html

What I understand is that it can communicate with the payment gateway I choose, but how to transfer the order info and credit card info to the payment gateway?

So, my custom payment method is showing in the checkout page. I selected it and place order but my gateway provider do not received the informations.

That’s my AuthorizationRequest.php file:

<?php /**  * Copyright © 2016 Magento. All rights reserved.  * See COPYING.txt for license details.  */ namespace Ahimsa\PaymentGateway\Gateway\Request;  use Magento\Payment\Gateway\ConfigInterface; use Magento\Payment\Gateway\Data\PaymentDataObjectInterface; use Magento\Payment\Gateway\Request\BuilderInterface;  class AuthorizationRequest implements BuilderInterface {     /**      * @var ConfigInterface      */     private $  config;      /**      * @param ConfigInterface $  config      */     public function __construct(         ConfigInterface $  config     ) {         $  this->config = $  config;     }      /**      * Builds ENV request      *      * @param array $  buildSubject      * @return array      */     public function build(array $  buildSubject)     {         if (!isset($  buildSubject['payment'])             || !$  buildSubject['payment'] instanceof PaymentDataObjectInterface         ) {             throw new \InvalidArgumentException('Payment data object should be provided');         }           /** @var PaymentDataObjectInterface $  payment */         $  payment = $  buildSubject['payment'];         $  order = $  payment->getOrder();         $  billing = $  order->getBillingAddress();         $  address = $  order->getShippingAddress();          return [             'reference' => $  order->getOrderIncrementId(),             'capture' => false,             'amount' => $  order->getGrandTotalAmount(),             'cardNumber' => '4024007165823435',             'cardholderName' => 'Bill Gates',             'expirationMonth' => 02,             'expirationYear' => 2020,             'securityCode' => 317,             'uri' => 'desenvolvedores/v1/transactions'         ];     } } 

And the TransferFactory.php file:

<?php /**  * Copyright © 2016 Magento. All rights reserved.  * See COPYING.txt for license details.  */ namespace Ahimsa\PaymentGateway\Gateway\Http;  use Magento\Payment\Gateway\Http\TransferBuilder; use Magento\Payment\Gateway\Http\TransferFactoryInterface; use Magento\Payment\Gateway\Http\TransferInterface; use Ahimsa\PaymentGateway\Gateway\Request\MockDataRequest;  class TransferFactory implements TransferFactoryInterface {     /**      * @var TransferBuilder      */     const URL = 'https://api.userede.com.br/';     private $  transferBuilder;      /**      * @param TransferBuilder $  transferBuilder      */     public function __construct(         TransferBuilder $  transferBuilder     ) {         $  this->transferBuilder = $  transferBuilder;     }      /**      * Builds gateway transfer object      *      * @param array $  request      * @return TransferInterface      */     public function create(array $  request)     {          return $  this->transferBuilder             ->setBody(json_encode($  request))             ->setMethod('POST')             ->setHeaders([                 'Content-Type' => 'application/json',                 'Authorization' => 'Basic MTAwMDAyMTA6Y2M3Yzk0MjQ1YjNhNGUxNmJlYmI2ZjE2ZTZiMTFkNjk=',                 'Affiliation' => '10000210'                 ])             ->setUri('https://api.userede.com.br/desenvolvedores/v1/transactions')             ->build();     } } 

Is that the right way?

Help please!