code: public PagedList<VaultInner> listBySubscription(final Integer top) {
          ServiceResponse<Page<VaultInner>> response = listBySubscriptionSinglePageAsync(top).toBlocking().single();
          return new PagedList<VaultInner>(response.body()) {
              @Override
              public Page<VaultInner> nextPage(String nextPageLink) {
                  return listBySubscriptionNextSinglePageAsync(nextPageLink).toBlocking().single().body();
              }
          };
      }
docs: The List operation gets information about the vaults associated with the subscription.
  
  @param top Maximum number of results to return.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the PagedList&lt;VaultInner&gt; object if successful.