apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/InstanceController.java/InstanceController/getByReleasesNotIn
class InstanceController:    @GetMapping("/envs/{env}/instances/by-namespace-and-releases-not-in")
    public List<InstanceDTO> getByReleasesNotIn(@PathVariable String env, @RequestParam String appId,
                                                @RequestParam String clusterName, @RequestParam String namespaceName,
                                                @RequestParam String releaseIds) {

        Set<Long> releaseIdSet = RELEASES_SPLITTER.splitToList(releaseIds).stream().map(Long::parseLong)
            .collect(Collectors.toSet());

        if (CollectionUtils.isEmpty(releaseIdSet)) {
            throw new BadRequestException("release ids can not be empty");
        }

        return instanceService.getByReleasesNotIn(Env.valueOf(env), appId, clusterName, namespaceName, releaseIdSet);
    }