Return datasets that match data_slug (hub_slug).

def generate_matching_datasets(self, data_slug):
        """Return datasets that match data_slug (hub_slug)."""
        matching_datasets = Dataset.objects.filter(
            hub_slug=data_slug
        ).order_by('-date_uploaded')

        if len(matching_datasets) > 0:
            return matching_datasets
        else:
            return None