apollo-portal/src/main/java/com/ctrip/framework/apollo/openapi/util/OpenApiBeanUtils.java/OpenApiBeanUtils/transformFromApp
class OpenApiBeanUtils:  public static OpenAppDTO transformFromApp(final App app) {
    Preconditions.checkArgument(app != null);

    return BeanUtils.transform(OpenAppDTO.class, app);
  }