docs: public Observable<ListServiceSasResponseInner> listServiceSASAsync(String resourceGroupName, String accountName, ServiceSasParameters parameters) {
          return listServiceSASWithServiceResponseAsync(resourceGroupName, accountName, parameters).map(new Func1<ServiceResponse<ListServiceSasResponseInner>, ListServiceSasResponseInner>() {
              @Override
              public ListServiceSasResponseInner call(ServiceResponse<ListServiceSasResponseInner> response) {
                  return response.body();
              }
          });
      }