Smile\ElasticsuiteVirtualCategory\Model\Rule\Condition\Product\CategoryNestedFilter::getFilter PHP Method

    public function getFilter()
    {
        $filterParams = ['field' => self::FILTER_FIELD, 'value' => true];
        $filterQuery = $this->queryFactory->create(QueryInterface::TYPE_NOT, ['query' => $this->queryFactory->create(QueryInterface::TYPE_TERM, $filterParams)]);
        return $filterQuery;
    }