private function setDefaultForFilterConditionsConjunction(&$config)
    {
        if (!array_key_exists('filters', $config) ||
            !array_key_exists('conjunctions', $config['filters']) ||
            0 === count($config['filters']['conjunctions'])
        ) {
            $config['filters'] = [];
            $config['filters']['conjunctions'] = [
                [
                    'id' => 'and',
                    'translation' => 'resource.filter.conjunction.and',
                ],
                [
                    'id' => 'or',
                    'translation' => 'resource.filter.conjunction.or',
                ],
            ];
        }
    }