RestHandler::initiateIframePay

private function initiateIframePay(Payment $payment): ServiceResult
{
	$result = new ServiceResult();

	$template = $this->getIframeTemplate($payment);
	if ($this->initiateMode === static::STREAM)
	{
		echo $template;
	}
	else
	{
		$result->setTemplate($template);
	}

	return $result;
}