Tebru\Retrofit\Event\BeforeSendEvent::getHeaders PHP Метод

    public function getHeaders()
    {
        trigger_error('Retrofit Deprecation: This method is deprecated, use getRequest() instead', E_USER_DEPRECATED);
        return $this->request->getHeaders();
    }

 public function testGetHeaders()
 {
     $this->disableDeprecationWarning();
     $event = new BeforeSendEvent(new Request('POST', 'http://mockservice.com/post', ['foo' => 'bar'], 'body'));
     $this->assertSame(['Host' => ['mockservice.com'], 'foo' => ['bar']], $event->getHeaders());
     $this->enableDeprecationWarning();
 }