code: public Observable<Page<CloudPool>> listNextAsync(final String nextPageLink) {
          return listNextWithServiceResponseAsync(nextPageLink)
              .map(new Func1<ServiceResponseWithHeaders<Page<CloudPool>, PoolListHeaders>, Page<CloudPool>>() {
                  @Override
                  public Page<CloudPool> call(ServiceResponseWithHeaders<Page<CloudPool>, PoolListHeaders> response) {
                      return response.body();
                  }
              });
      }
docs: Lists all of the pools in the specified account.
  
  @param nextPageLink The NextLink from the previous successful call to List operation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;CloudPool&gt; object