Ergo\Http\TransportTest::testIPV4Only PHP Method

    public function testIPV4Only()
    {
        $request = new Request('GET', '/user/blargh');
        $family = Transport::IPFAMILY_IPV4;
        $transport = $this->transport();
        $transport->setIPFamily($family);
        $method = $this->transportMethod("_curlConnection");
        $curl = $method->invoke($transport, $request);
    }