public function buildClient($code, $headers, $body)
{
$response = new Response($code, $headers, $body);
$client = new HTTPClient('https://api.sendgrid.com');
$mock = new MockPlugin();
$mock->addResponse($response);
$client->addSubscriber($mock);
$sendgrid = new Client('sendgrid_apikey');
$sendgrid->setClient($client);
return $sendgrid;
}
