code: public ServiceFuture<List<CertificateItem>> listCertificateVersionsAsync(final String vaultBaseUrl,
              final String certificateName, final ListOperationCallback<CertificateItem> serviceCallback) {
          return getCertificateVersionsAsync(vaultBaseUrl, certificateName, serviceCallback);
      }
docs: List the versions of a certificate.
  
  @param vaultBaseUrl
  The vault name, e.g. https://myvault.vault.azure.net
  @param certificateName
  The name of the certificate
  @param serviceCallback
  the async ServiceCallback to handle successful and failed
  responses.
  @return the {@link ServiceFuture} object