code: public void purgeDeletedStorageAccount(String vaultBaseUrl, String storageAccountName) {
          purgeDeletedStorageAccountWithServiceResponseAsync(vaultBaseUrl, storageAccountName).toBlocking().single().body();
      }
docs: Permanently deletes the specified storage account.
  The purge deleted storage account operation removes the secret permanently, without the possibility of recovery. This operation can only be performed on a soft-delete enabled vault. This operation requires the storage/purge 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
  @throws KeyVaultErrorException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent