public function testChaining()
 {
     $mock = new Mock([new Response(200, []), "HTTP/1.1 202 OK\r\nContent-Length: 0\r\n\r\n"]);
     $tester = new WebhookTester();
     $client = $tester->getClient()->getEmitter()->attach($mock);
     $response = $tester->setEndpoint('http://localhost/stripe/webhooks')->setVersion('2014-09-08')->triggerEvent('charge.succeeded');
     $this->assertEquals(200, $response->getStatusCode());
 }