Nqxcode\LuceneSearch\Model\Config::groupedSearchableIdsAsKeys PHP Method

    private function groupedSearchableIdsAsKeys(array $hits)
    {
        $groupedIdsAsKeys = [];
        foreach ($this->classUidList($hits) as $classUid) {
            /** @var Model|Builder $model */
            $model = $this->newInstanceBy($classUid);
            $primaryKey = $model->getKeyName();
            if (!method_exists($model, 'searchableIds')) {
                // If not exists get full id list
                $searchableIds = $model->newQuery()->lists($primaryKey);
            } else {
                $searchableIds = $model->{'searchableIds'}();
            }
            $searchableIds = \Illuminate\Support\Collection::make($searchableIds)->all();
            // Set searchable id list for model's class
            $groupedIdsAsKeys[get_class($model)] = $searchableIds ? array_flip($searchableIds) : [];
        }
        return $groupedIdsAsKeys;
    }