code: public ServiceFuture<List<DeletedStorageAccountItem>> getDeletedStorageAccountsAsync(final String vaultBaseUrl, final ListOperationCallback<DeletedStorageAccountItem> serviceCallback) {
          return AzureServiceFuture.fromPageResponse(
              getDeletedStorageAccountsSinglePageAsync(vaultBaseUrl),
              new Func1<String, Observable<ServiceResponse<Page<DeletedStorageAccountItem>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<DeletedStorageAccountItem>>> call(String nextPageLink) {
                      return getDeletedStorageAccountsNextSinglePageAsync(nextPageLink);
                  }
              },
              serviceCallback);
      }
docs: Lists deleted storage accounts for the specified vault.
  The Get Deleted Storage Accounts operation returns the storage accounts that have been deleted for a vault enabled for soft-delete. This operation requires the storage/list permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object