Symfony\Component\HttpFoundation\BinaryFileResponse::setContent PHP Метод

    public function setContent($content)
    {
        if (null !== $content) {
            throw new \LogicException('The content cannot be set on a BinaryFileResponse instance.');
        }
    }

 /**
  * @expectedException \LogicException
  */
 public function testSetContent()
 {
     $response = new BinaryFileResponse(__FILE__);
     $response->setContent('foo');
 }