/**
* Get one of theme domain models
*
* @param int|null $type
* @return \Magento\Theme\Model\Theme\Domain\Virtual|\Magento\Theme\Model\Theme\Domain\Staging
* @throws \InvalidArgumentException
*/
public function getDomainModel($type = null)
{
if ($type !== null && $type != $this->getType()) {
throw new \InvalidArgumentException(sprintf('Invalid domain model "%s" requested for theme "%s" of type "%s"', $type, $this->getId(), $this->getType()));
}
return $this->_domainFactory->create($this);
}