code: @SuppressWarnings("unchecked")
      protected Map<String, Object> downloadFromExternalStorage(ExternalPayloadStorage.PayloadType payloadType, String path) {
          Preconditions.checkArgument(StringUtils.isNotBlank(path), "uri cannot be blank");
          ExternalStorageLocation externalStorageLocation = payloadStorage.getLocation(ExternalPayloadStorage.Operation.READ, payloadType, path);
          try (InputStream inputStream = payloadStorage.download(externalStorageLocation.getUri())) {
              return objectMapper.readValue(inputStream, Map.class);
          } catch (IOException e) {
              String errorMsg = String.format("Unable to download payload from external storage location: %s", path);
              logger.error(errorMsg, e);
              throw new ConductorClientException(errorMsg, e);
          }
      }
docs: Uses the {@link PayloadStorage} for downloading large payloads to be used by the client.
  Gets the uri of the payload fom the server and then downloads from this location.
  
  @param payloadType the {@link com.netflix.conductor.common.utils.ExternalPayloadStorage.PayloadType} to be downloaded
  @param path        the relative of the payload in external storage
  @return the payload object that is stored in external storage