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