app\Dinero::sendInvoice PHP Method

    public static function sendInvoice($invoiceGuid, $timestamp)
    {
        $res = self::getClient()->request('POST', 'https://api.dinero.dk/v1/' . self::$organizationId . '/invoices/' . $invoiceGuid . '/email', ['verify' => false, 'headers' => ['Authorization' => 'Bearer ' . self::$accessToken], 'json' => ['timestamp' => $timestamp]]);
        return $res;
    }