Doctrine\OrientDB\Binding\HttpBinding::deleteDocument PHP Method

    public function deleteDocument($rid, $version = null, $database = null)
    {
        $headers = null;
        if ($version) {
            $headers = array('If-Match' => $version);
        }
        $location = $this->getDocumentLocation($database ?: $this->database, $rid);
        return $this->adapter->request('DELETE', $location, $headers);
    }