filtered example

$aggregations = [];

        if ($request->get('reduce-aggregations') === null) {
            foreach ($filters as $filter) {
                $aggregations = array_merge($aggregations, $filter->getAggregations());
            }

            return $aggregations;
        }

        foreach ($filters as $filter) {
            $excluded = $filters->filtered();

            if ($filter->exclude()) {
                $excluded = $excluded->blacklist($filter->getName());
            }

            foreach ($filter->getAggregations() as $aggregation) {
                if ($aggregation instanceof FilterAggregation) {
                    $aggregation->addFilters($excluded->getFilters());

                    $aggregations[] = $aggregation;