public function upload($file, $options = array())
{
$options['return_error'] = false;
$ret = Uploader::upload($file, $options);
$preloaded = new PreloadedFile(Cloudinary::signedPreloadedImage($ret));
if ($this->verifyUpload && !$preloaded . is_valid()) {
throw new \Exception("Error! Couldn't verify cloudinary response!");
}
$this->identifier = $preloaded->extendedIdentifier();
}
