Order::getPaySystemIdList

public function getPaySystemIdList() : array
{
	$result = [];

	/** @var Payment $payment */
	foreach ($this->getPaymentCollection() as $payment)
	{
		if ($payment->getPaymentSystemId() > 0)
		{
			$result[] = $payment->getPaymentSystemId();
		}
	}

	return $result;
}