GuzzleHttp\Tests\ClientTest::testCanUnsetRequestOptionWithNull PHP Метод

    public function testCanUnsetRequestOptionWithNull()
    {
        $mock = new MockHandler([new Response()]);
        $c = new Client(['headers' => ['foo' => 'bar'], 'handler' => $mock]);
        $c->get('http://example.com', ['headers' => null]);
        $this->assertFalse($mock->getLastRequest()->hasHeader('foo'));
    }