code: public Observable<ServiceResponse<Page<SasTokenInfoInner>>> listSasTokensWithServiceResponseAsync(final String resourceGroupName, final String accountName, final String storageAccountName, final String containerName) {
          return listSasTokensSinglePageAsync(resourceGroupName, accountName, storageAccountName, containerName)
              .concatMap(new Func1<ServiceResponse<Page<SasTokenInfoInner>>, Observable<ServiceResponse<Page<SasTokenInfoInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<SasTokenInfoInner>>> call(ServiceResponse<Page<SasTokenInfoInner>> page) {
                      String nextPageLink = page.body().nextPageLink();
                      if (nextPageLink == null) {
                          return Observable.just(page);
                      }
                      return Observable.just(page).concatWith(listSasTokensNextWithServiceResponseAsync(nextPageLink));
                  }
              });
      }
docs: Gets the SAS token associated with the specified Data Lake Analytics and Azure Storage account and container combination.
  
  @param resourceGroupName The name of the Azure resource group that contains the Data Lake Analytics account.
  @param accountName The name of the Data Lake Analytics account from which an Azure Storage account's SAS token is being requested.
  @param storageAccountName The name of the Azure storage account for which the SAS token is being requested.
  @param containerName The name of the Azure storage container for which the SAS token is being requested.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;SasTokenInfoInner&gt; object