apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ReleaseService.java/ReleaseService/findByReleaseIds
class ReleaseService:  public List<Release> findByReleaseIds(Set<Long> releaseIds) {
    Iterable<Release> releases = releaseRepository.findAllById(releaseIds);
    if (releases == null) {
      return Collections.emptyList();
    }
    return Lists.newArrayList(releases);
  }