code: public Observable<Page<DataLakeStoreAccountInner>> listAsync() {
          return listWithServiceResponseAsync()
              .map(new Func1<ServiceResponse<Page<DataLakeStoreAccountInner>>, Page<DataLakeStoreAccountInner>>() {
                  @Override
                  public Page<DataLakeStoreAccountInner> call(ServiceResponse<Page<DataLakeStoreAccountInner>> response) {
                      return response.body();
                  }
              });
      }
docs: Lists the Data Lake Store accounts within the subscription. The response includes a link to the next page of results, if any.
  
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;DataLakeStoreAccountInner&gt; object