public function failedForGroup($group, int $start = 0, int $limit = 25): array
    {
        $results = json_decode($this->client->failed($group, $start, $limit), true);

        if (isset($results['jobs']) && !empty($results['jobs'])) {
            $results['jobs'] = $this->multiget($results['jobs']);
        }

        return is_array($results) ? $results : [];
    }