code: public DeletedCertificateBundle getDeletedCertificate(String vaultBaseUrl, String certificateName) {
          return getDeletedCertificateWithServiceResponseAsync(vaultBaseUrl, certificateName).toBlocking().single().body();
      }
docs: Retrieves information about the specified deleted certificate.
  The GetDeletedCertificate operation retrieves the deleted certificate information plus its attributes, such as retention interval, scheduled permanent deletion and the current deletion recovery level. This operation requires the certificates/get permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param certificateName The name of the certificate
  @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 DeletedCertificateBundle object if successful.