Pop\Curl\Curl::isReturnTransfer PHP Метод

    public function isReturnTransfer()
    {
        return isset($this->options[CURLOPT_RETURNTRANSFER]) && $this->options[CURLOPT_RETURNTRANSFER] == true;
    }

 public function testSetReturnTransfer()
 {
     $c = new Curl('http://www.popphp.org/version', array(CURLOPT_HEADER => false, CURLOPT_RETURNTRANSFER => false));
     $c->setReturnTransfer(true);
     $this->assertTrue($c->isReturnTransfer());
 }