public function __construct($username, $token, $client = null, $fragment = null)
{
parent::__construct('https://push.superfeedr.com');
$this->username = $username;
$this->token = $token;
if ($client === null) {
$client = new Guzzle\Http\Client();
}
$client->getConfig()->setPath('request.options/auth', [$username, $token]);
$this->client = $client;
if ($fragment !== null) {
$this->fragment = $fragment;
}
}
