apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/service/AppService.java/AppService/createAppInRemote
class AppService:  public void createAppInRemote(Env env, App app) {
    if (StringUtils.isBlank(app.getDataChangeCreatedBy())) {
      String username = userInfoHolder.getUser().getUserId();
      app.setDataChangeCreatedBy(username);
      app.setDataChangeLastModifiedBy(username);
    }

    AppDTO appDTO = BeanUtils.transform(AppDTO.class, app);
    appAPI.createApp(env, appDTO);
  }