App\Ninja\PaymentDrivers\WePayPaymentDriver::refundDetails PHP Method

    protected function refundDetails($payment, $amount)
    {
        $data = parent::refundDetails($payment, $amount);
        $data['refund_reason'] = 'Refund issued by merchant.';
        // WePay issues a full refund when no amount is set. If an amount is set, it will try
        // to issue a partial refund without refunding any fees. However, the Stripe driver
        // (but not the API) requires the amount parameter to be set no matter what.
        if ($data['amount'] == $payment->getCompletedAmount()) {
            unset($data['amount']);
        }
        return $data;
    }