code: public Observable<ServiceResponse<Page<StorageAccountItem>>> getStorageAccountsWithServiceResponseAsync(final String vaultBaseUrl, final Integer maxresults) {
          return getStorageAccountsSinglePageAsync(vaultBaseUrl, maxresults)
              .concatMap(new Func1<ServiceResponse<Page<StorageAccountItem>>, Observable<ServiceResponse<Page<StorageAccountItem>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<StorageAccountItem>>> call(ServiceResponse<Page<StorageAccountItem>> page) {
                      String nextPageLink = page.body().nextPageLink();
                      if (nextPageLink == null) {
                          return Observable.just(page);
                      }
                      return Observable.just(page).concatWith(getStorageAccountsNextWithServiceResponseAsync(nextPageLink));
                  }
              });
      }
docs: List storage accounts managed by the specified key vault. This operation requires the storage/list permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param maxresults Maximum number of results to return in a page. If not specified the service will return up to 25 results.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;StorageAccountItem&gt; object