code: public function parseResponse(Response $response)
      {
          $json = $response->json();
  
          /*
           * The returned response must not be in JSON
           * format, unless it is an error.
           */
          if (!is_null($json)) {
              if (isset($json->error)) {
                  $error = $json->error;
                  throw new AccessTokenException($error->type.': '.$error->message, $error->code);
              }
          }
  
          $token = $response->content();
  
          return $this->parseToken($token);
      }
docs: Parses an access token response.
  
  @param Vinelab\Http\Response $response
  
  @return array