apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/controller/ReleaseHistoryController.java/ReleaseHistoryController/findReleaseHistoriesByNamespace
class ReleaseHistoryController:  @GetMapping("/apps/{appId}/clusters/{clusterName}/namespaces/{namespaceName}/releases/histories")
  public PageDTO<ReleaseHistoryDTO> findReleaseHistoriesByNamespace(
      @PathVariable String appId, @PathVariable String clusterName,
      @PathVariable String namespaceName,
      Pageable pageable) {

    Page<ReleaseHistory> result = releaseHistoryService.findReleaseHistoriesByNamespace(appId, clusterName,
                                                                                        namespaceName, pageable);
    return transform2PageDTO(result, pageable);
  }