Can't find the customer from the order

[knivo1982]

$config= array(
'ShopUrl' => $store->shopUrl,
'AccessToken' => $store->accessToken,
);
$shopify = new \PHPShopify\ShopifySDK($config);

print_r($shopify->Order->get($options));

With these commands I can get all the orders, but not the customers associated with them? what am I doing wrong?