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