code: public PagedList<DeletedKeyItem> getDeletedKeys(final String vaultBaseUrl, final Integer maxresults) {
          ServiceResponse<Page<DeletedKeyItem>> response = getDeletedKeysSinglePageAsync(vaultBaseUrl, maxresults).toBlocking().single();
          return new PagedList<DeletedKeyItem>(response.body()) {
              @Override
              public Page<DeletedKeyItem> nextPage(String nextPageLink) {
                  return getDeletedKeysNextSinglePageAsync(nextPageLink).toBlocking().single().body();
              }
          };
      }
docs: Lists the deleted keys in the specified vault.
  Retrieves a list of the keys in the Key Vault as JSON Web Key structures that contain the public part of a deleted key. This operation includes deletion-specific information. The Get Deleted Keys operation is applicable for vaults enabled for soft-delete. While the operation can be invoked on any vault, it will return an error if invoked on a non soft-delete enabled vault. This operation requires the keys/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
  @throws KeyVaultErrorException 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;DeletedKeyItem&gt; object if successful.