code: public function makeRequestToken(Response $response)
      {
          parse_str($response->content(), $params);
  
          $this->validateRequestTokenResponse($params);
  
          $this->credentials['key'] = $params['oauth_token'];
          $this->credentials['secret'] = $params['oauth_token_secret'];
          $this->credentials['callback_confirmed'] = (isset($params['oauth_callback_confirmed'])) ?
                                                          (boolean) $params['oauth_callback_confirmed'] : null;
  
          return $this;
      }
docs: Creates and returns an OAuthToken instance
  parsing values from the Twitter API Response.
  
  @param Vinelab\Http\Response $response
  
  @return Vinelab\Auth\Social\Providers\Twitter\OAuthToken