public List<String> getUnionList(List<String> list1, List<String> list2) {
		List<String> totalList = new ArrayList<>();
		if (list1.size() > list2.size()) {
			for (String obj : list1) {
				totalList.add(obj);
			}
			for (String obj : list2) {
				if (!totalList.contains(obj)) {
					totalList.add(obj);
				}
			}
		} else {
			for (String obj : list2) {
				totalList.add(obj);
			}
			for (String obj : list1) {
				if (!totalList.contains(obj)) {
					totalList.add(obj);
				}
			}
		}
		return totalList;
	}