Clue\React\Buzz\Browser::withBase PHP Метод

    public function withBase($baseUri)
    {
        $browser = clone $this;
        $browser->baseUri = $this->messageFactory->uri($baseUri);
        if ($browser->baseUri->getScheme() === '' || $browser->baseUri->getHost() === '') {
            throw new \InvalidArgumentException('Base URI must be absolute');
        }
        return $browser;
    }

 public function setUp()
 {
     $url = 'http://svn.apache.org/viewvc/';
     $this->loop = LoopFactory::create();
     $browser = new Browser($this->loop);
     $this->viewvc = new Client($browser->withBase($url));
 }