protected function makeRows($group, $key, $value): array
    {
        $rows = [];

        if (is_array($value)) {
            foreach ($value as $subKey => $subValue) {
                $rows[] = [
                    'key'   => $group . '.' . $key . '.' . $subKey,
                    'value' => $subValue,
                ];
            }
        } else {
            $rows[] = [
                'key'   => $group . '.' . $key,
                'value' => $value,
            ];
        }

        return $rows;
    }