public function __construct($instagram, $path)
{
parent::__construct($instagram);
$uploadId = number_format(round(microtime(true) * 1000), 0, '', '');
$this->addParam("_csrftoken", $instagram->getCSRFToken());
$this->addParam("_uuid", $instagram->getUUID());
$this->addParam("upload_id", $uploadId);
$this->addParam("image_compression", json_encode(array("lib_name" => "jt", "lib_version" => "1.3.0", "quality" => "70")));
$this->addFile("photo", new RequestFile($path, "application/octet-stream", sprintf("pending_media_%s.jpg", $uploadId)));
}