code: private URI generateAsynchronously(String account,
                                         String spaceId,
                                         String storeId,
                                         String format)
          throws Exception {
          StorageProviderType providerType = getStorageProviderType(storeId);
  
          InputStream manifest =
              manifestResource.getManifest(account, storeId, spaceId, format);
  
          String contentId =
              MessageFormat.format("generated-manifests/manifest-{0}_{1}_{2}.txt{3}",
                                   spaceId,
                                   providerType.name().toLowerCase(),
                                   DateUtil.convertToString(System.currentTimeMillis(), DateFormat.PLAIN_FORMAT),
                                   ".gz");
  
          String adminSpace = "x-duracloud-admin";
  
          URI uri = buildURI(adminSpace, contentId);
  
          StorageProvider provider = storageProviderFactory.getStorageProvider();
  
          executor.execute(() -> {
  
              try {
                  boolean gzip = true;
                  // write file to disk
                  File file = IOUtil.writeStreamToFile(manifest, gzip);
  
                  // upload to the default storage provider with retries
                  uploadManifestToDefaultStorageProvider(format,
                                                         adminSpace,
                                                         contentId,
                                                         file,
                                                         provider,
                                                         gzip);
              } catch (Exception ex) {
                  log.error("failed to generate manifest for space: spaceId="
                            + spaceId
                            + ", storeId="
                            + storeId
                            + " : "
                            + ex.getMessage(),
                            ex);
              }
          });
  
          return uri;
      }
docs: Generates a manifest file asynchronously and uploads to DuraCloud
  
  @param account
  @param spaceId
  @param storeId
  @param format
  @return The URI of the generated manifest.