apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/service/AppNamespaceService.java/AppNamespaceService/findAll
class AppNamespaceService:  public List<AppNamespace> findAll() {
    Iterable<AppNamespace> appNamespaces = appNamespaceRepository.findAll();
    return Lists.newArrayList(appNamespaces);
  }