final Collection<Object> listOfValues = convertValueToCollection(oldValue); listOfValues.add(authn.getAttributes().get(attrName)); authenticationAttributes.put(attrName, listOfValues);
final Collection<Object> listOfValues = convertValueToCollection(oldValue); listOfValues.add(authn.getAttributes().get(attrName)); authenticationAttributes.put(attrName, listOfValues);