public function testInstantiation()
{
$response = new Created('http://example-location', 'test content', ['Content-Type' => 'application/json']);
$this->assertEquals(201, $response->getStatusCode());
$this->assertEquals('test content', $response->getContent());
$this->assertEquals('http://example-location', $response->headers->get('location'));
$this->assertEquals('application/json', $response->headers->get('content-type'));
}
