TokenDelegationHandler delegationHandler = new SAMLDelegationHandler();
issueOperation.setDelegationHandlers(Collections.singletonList(delegationHandler));
// Add Token Validator
List<TokenValidator> validatorList = new ArrayList<TokenValidator>();
SAMLTokenValidator samlTokenValidator = new SAMLTokenValidator();
samlTokenValidator.setSamlRealmCodec(new IssuerSAMLRealmCodec());
validatorList.add(samlTokenValidator);
issueOperation.setTokenValidators(validatorList);
addService(issueOperation);