DocumentGeneratorManager::getLastBoundPaymentDocumentTemplateId

public function getLastBoundPaymentDocumentTemplateId(): ?int
{
	$lastBinding = DocumentBindingTable::getList([
		'select' => ['DOCUMENT.TEMPLATE_ID'],
		'order' => ['ID' => 'DESC'],
		'filter' => [
			'=ENTITY_NAME' => \CCrmOwnerType::OrderPaymentName,
		],
		'limit' => 1,
	])->fetch();

	return $lastBinding['DOCUMENT.TEMPLATE_ID'] ?? null;
}