public function create($containerId, Item $item)
    {
        $properties = $item->export()['properties'];
        if (count($properties) === 0) {
            throw new \InvalidArgumentException('Item should has at least one property!');
        }

        return $this->client->sendRequest(
            $this->getBase() . '/' . $containerId,
            'POST',
            $properties
        );
    }