private function addAggregationFilters()
    {
        foreach ($this->_data as $requestName => $requestConfig) {
            if (isset($requestConfig['aggregations'])) {
                $aggregations = [];

                foreach ($requestConfig['aggregations'] as $aggName => $aggConfig) {
                    $aggregations[$aggName] = $this->replaceAggregationFilter($aggConfig);
                }

                $this->_data[$requestName]['aggregations'] = $aggregations;
            }
        }
    }