IncomingManager::getSectionLinkByVendorId

private function getSectionLinkByVendorId(string $sectionId): ?SectionConnection
{
	$mapper = $this->mapperFactory->getSectionConnection();
	$map = $mapper->getMap([
			'=CONNECTION_ID' => $this->connection->getId(),
			'=VENDOR_SECTION_ID' => $sectionId,
		]);

	return $map->fetch();
}