docs: public Observable<Page<UpgradeOperationHistoricalStatusInfoInner>> getOSUpgradeHistoryNextAsync(final String nextPageLink) {
          return getOSUpgradeHistoryNextWithServiceResponseAsync(nextPageLink)
              .map(new Func1<ServiceResponse<Page<UpgradeOperationHistoricalStatusInfoInner>>, Page<UpgradeOperationHistoricalStatusInfoInner>>() {
                  @Override
                  public Page<UpgradeOperationHistoricalStatusInfoInner> call(ServiceResponse<Page<UpgradeOperationHistoricalStatusInfoInner>> response) {
                      return response.body();
                  }
              });
      }