code: public Observable<ServiceResponse<Page<BillingMeterInner>>> listBillingMetersWithServiceResponseAsync(final String billingLocation) {
          return listBillingMetersSinglePageAsync(billingLocation)
              .concatMap(new Func1<ServiceResponse<Page<BillingMeterInner>>, Observable<ServiceResponse<Page<BillingMeterInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<BillingMeterInner>>> call(ServiceResponse<Page<BillingMeterInner>> page) {
                      String nextPageLink = page.body().nextPageLink();
                      if (nextPageLink == null) {
                          return Observable.just(page);
                      }
                      return Observable.just(page).concatWith(listBillingMetersNextWithServiceResponseAsync(nextPageLink));
                  }
              });
      }
docs: Gets a list of meters for a given location.
  Gets a list of meters for a given location.
  
  @param billingLocation Azure Location of billable resource
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;BillingMeterInner&gt; object