Factory::__construct

public function __construct(Service\Factory $childFactory, string $parentIdFieldName)
{
	if (!$childFactory->isFieldExists($parentIdFieldName))
	{
		throw new ArgumentException(
			'The provided field does not exist in ' . get_class($childFactory), 'fieldName'
		);
	}

	$this->childFactory = $childFactory;
	$this->parentIdFieldName = $parentIdFieldName;
}