code: public ServiceFuture<CertificateBundle> getCertificateAsync(String certificateIdentifier,
              final ServiceCallback<CertificateBundle> serviceCallback) {
          CertificateIdentifier id = new CertificateIdentifier(certificateIdentifier);
          return getCertificateAsync(id.vault(), id.name(), id.version() == null ? "" : id.version(), serviceCallback);
      }
docs: Gets information about a specified certificate.
  
  @param certificateIdentifier
  The certificate identifier
  @param serviceCallback
  the async ServiceCallback to handle successful and failed
  responses.
  @return the {@link ServiceFuture} object