apollo-portal/src/main/java/com/ctrip/framework/apollo/openapi/util/OpenApiBeanUtils.java/OpenApiBeanUtils/transformToClusterDTO
class OpenApiBeanUtils:  public static ClusterDTO transformToClusterDTO(OpenClusterDTO openClusterDTO) {
    Preconditions.checkArgument(openClusterDTO != null);
    return BeanUtils.transform(ClusterDTO.class, openClusterDTO);
  }