/**
* Returns the invoice of a customer
* @param string $invoiceId
* @return array
*/
public function invoice($invoiceId, $fromLocal = true)
{
if (!$this->subscription) {
throw new CashewExceptions\NoSubscriptionException();
}
return $fromLocal ? $this->storage->getInvoice($this->subscription['user_id'], $invoiceId) : $this->gateway->invoice($invoiceId);
}
