EntityDetails::getFactory

private function getFactory(): Factory
{
	if ($this->factory === null)
	{
		$entityTypeId = $this->getEntityTypeIdFromSourceList();
		if ($entityTypeId)
		{
			$this->factory = Container::getInstance()->getFactory($entityTypeId);
		}

		if (!$this->factory)
		{
			throw new DomainException('Could not load factory instance.');
		}
	}

	return $this->factory;
}