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