code: public String getExportResult(String exportId) throws ApiException {
          ApiResponse<String> resp = getExportResultWithHttpInfo(exportId);
          return resp.getData();
      }
docs: Get Export Result
  Retrieve result of the export query in tgz format. The tar file may contain one or more files with the results.
  @param exportId Export ID of the export query. (required)
  @return String
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body