provider.setOutTransformElements(map);
provider.setAttributesToElements(true);
//data setup
TagVO2 tag = new TagVO2("A", "B");
TagVO2Holder holder = new TagVO2Holder();
holder.setTag(tag);
List<TagVO2Holder> list = new ArrayList<JAXBElementProviderTest.TagVO2Holder>();
list.add(holder);
//ParameterizedType required for Lists of Objects
ParameterizedType type = new ParameterizedType() {