<?php namespace Mollie\Api\HttpAdapter; interface MollieHttpAdapterInterface { /** * Send a request to the specified Mollie api url. * * @param string $httpMethod * @param string $url * @param string|array $headers * @param string $httpBody * @return \stdClass|null * @throws \Mollie\Api\Exceptions\ApiException */ public function send($httpMethod, $url, $headers, $httpBody); /** * The version number for the underlying http client, if available. * @example Guzzle/6.3 * * @return string|null */ public function versionString(); }