code: private void setIssuerUniqueId(Object val) throws CertificateException {
          if (version.compare(CertificateVersion.V2) < 0) {
              throw new CertificateException("Invalid version");
          }
          if (!(val instanceof UniqueIdentity)) {
              throw new CertificateException(
                               "IssuerUniqueId class type invalid.");
          }
          issuerUniqueId = (UniqueIdentity)val;
      }
docs: Set the Issuer Unique Identity in the certificate.
  
  @params val the Object class value for the IssuerUniqueId
  @exception CertificateException