code: public Observable<ServiceResponse<Page<VaultInner>>> listBySubscriptionWithServiceResponseAsync(final Integer top) {
          return listBySubscriptionSinglePageAsync(top)
              .concatMap(new Func1<ServiceResponse<Page<VaultInner>>, Observable<ServiceResponse<Page<VaultInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<VaultInner>>> call(ServiceResponse<Page<VaultInner>> page) {
                      String nextPageLink = page.body().nextPageLink();
                      if (nextPageLink == null) {
                          return Observable.just(page);
                      }
                      return Observable.just(page).concatWith(listBySubscriptionNextWithServiceResponseAsync(nextPageLink));
                  }
              });
      }
docs: The List operation gets information about the vaults associated with the subscription.
  
  @param top Maximum number of results to return.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;VaultInner&gt; object