code: public ServiceFuture<List<StorageAccountItem>> getStorageAccountsAsync(final String vaultBaseUrl, final Integer maxresults, final ListOperationCallback<StorageAccountItem> serviceCallback) {
          return AzureServiceFuture.fromPageResponse(
              getStorageAccountsSinglePageAsync(vaultBaseUrl, maxresults),
              new Func1<String, Observable<ServiceResponse<Page<StorageAccountItem>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<StorageAccountItem>>> call(String nextPageLink) {
                      return getStorageAccountsNextSinglePageAsync(nextPageLink);
                  }
              },
              serviceCallback);
      }
docs: List storage accounts managed by the specified key vault. This operation requires the storage/list permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param maxresults Maximum number of results to return in a page. If not specified the service will return up to 25 results.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object