code: public Observable<Page<DeletedSecretItem>> getDeletedSecretsAsync(final String vaultBaseUrl, final Integer maxresults) {
          return getDeletedSecretsWithServiceResponseAsync(vaultBaseUrl, maxresults)
              .map(new Func1<ServiceResponse<Page<DeletedSecretItem>>, Page<DeletedSecretItem>>() {
                  @Override
                  public Page<DeletedSecretItem> call(ServiceResponse<Page<DeletedSecretItem>> response) {
                      return response.body();
                  }
              });
      }
docs: Lists deleted secrets for the specified vault.
  The Get Deleted Secrets operation returns the secrets that have been deleted for a vault enabled for soft-delete. This operation requires the secrets/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;DeletedSecretItem&gt; object