Smile\ElasticsuiteCatalog\Model\ResourceModel\Product\Fulltext\Collection::_renderFiltersBefore PHP Method

    protected function _renderFiltersBefore()
    {
        $searchRequest = $this->prepareRequest();
        $this->queryResponse = $this->searchEngine->search($searchRequest);
        // Update the product count.
        $this->_totalRecords = $this->queryResponse->count();
        // Filter search results. The pagination has to be resetted since it is managed by the engine itself.
        $docIds = array_map(function (\Magento\Framework\Api\Search\Document $doc) {
            return (int) $doc->getId();
        }, $this->queryResponse->getIterator()->getArrayCopy());
        if (empty($docIds)) {
            $docIds[] = 0;
        }
        $this->getSelect()->where('e.entity_id IN (?)', ['in' => $docIds]);
        $this->_pageSize = false;
        $this->isSpellchecked = $searchRequest->isSpellchecked();
        return parent::_renderFiltersBefore();
    }