code: public Observable<Page<DeletedSasDefinitionItem>> getDeletedSasDefinitionsAsync(final String vaultBaseUrl, final String storageAccountName) {
          return getDeletedSasDefinitionsWithServiceResponseAsync(vaultBaseUrl, storageAccountName)
              .map(new Func1<ServiceResponse<Page<DeletedSasDefinitionItem>>, Page<DeletedSasDefinitionItem>>() {
                  @Override
                  public Page<DeletedSasDefinitionItem> call(ServiceResponse<Page<DeletedSasDefinitionItem>> response) {
                      return response.body();
                  }
              });
      }
docs: Lists deleted SAS definitions for the specified vault and storage account.
  The Get Deleted Sas Definitions operation returns the SAS definitions that have been deleted for a vault enabled for soft-delete. This operation requires the storage/listsas permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param storageAccountName The name of the storage account.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;DeletedSasDefinitionItem&gt; object