public function getDomainCacheRuleTasks($domain, $ruleId)
    {
        return json_decode(self::getClient()->getDomainCacheRuleTasks($this->sn, $domain, $ruleId));
    }
public function getDomainCacheRuleTasks($domain, $ruleId)
    {
        return json_decode(self::getClient()->getDomainCacheRuleTasks($this->sn, $domain, $ruleId));
    }
Return array of taskId associated with rule $ruleId of domain $domain

@param string $domain
@param int $ruleId
@return array of task id (int)