public function importFromFile(
        $collectionId,
        $importFileName,
        array $options = []
    )
    {

        $contents = file_get_contents($importFileName);
        if ($contents === false) {
            throw new ClientException('Input file "' . $importFileName . '" could not be found.');
        }

        return $this->import($collectionId, $contents, $options);
    }