public function payInline(Payment $payment, $channel, $callback)
{
$paymentSessionId = $this->buildPayment($payment, $channel);
$response = ["url" => GopayConfig::fullNewIntegrationURL() . '/' . $paymentSessionId, "signature" => $this->createSignature($paymentSessionId)];
call_user_func_array($callback, [$paymentSessionId]);
return $response;
}