使用Redmine的PHP API时，如何判断需求是否为原子需求

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    /**
     * 判断是否为原子需求, 即是否依然含有子需求
     * @param int $id 需求Id
     * @return int
     */
    public function hasChildIssue($id)
    {
        $res = $this->client->api('issue')->show($id, array('include' => 'children'));
        if (!empty($res) && isset($res['issue']['children'])) {
            return true;
        }
        return false;
    }

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    set_time_limit(0);
    $startTime = microtime(true);

    //检查API KEY是否配置
    $configService = $this->serviceInstance('config', 'work');
    $config = $configService->getConstApiKey();
    if (empty($config)) {
        throw new \Exception('固定API KEY未配置');
    }
    $constApiKey = $config['value'];
    $redmine = new RedmineLib($constApiKey);

    $issueId=17252;
    $temp = $redmine->client->get('/issues/'.urlencode($issueId).'.json?'.http_build_query(array ('include' => 'children')));

    $temp = $redmine->client->api('issue')->show(17252, array ('include' => 'children'));
    
    var_dump($temp['issue']['children']); exit; // 如果有子任务，['issue']['children']字段不存在，否则['issue']['children']字段对应一个子数组

//        $temp  = $redmine->client->issue->show(17252, array('include' => 'children'));
//        $temp  = $redmine->hasChildIssue(17330);
    var_dump($temp); exit;