code: public CertificateBundle restoreCertificate(String vaultBaseUrl, byte[] certificateBundleBackup) {
          return restoreCertificateWithServiceResponseAsync(vaultBaseUrl, certificateBundleBackup).toBlocking().single().body();
      }
docs: Restores a backed up certificate to a vault.
  Restores a backed up certificate, and all its versions, to a vault. This operation requires the certificates/restore permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param certificateBundleBackup The backup blob associated with a certificate bundle.
  @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 CertificateBundle object if successful.