code: private static List<ContactDetails> fetchDataList() {
  		List<ContactDetails> list = new ArrayList<>();
  		list.add(new ContactDetails("David", "1234", new String[]{"a", "b"}));
  		list.add(new ContactDetails("Jun", "1111", new String[]{"c"}));
  		list.add(new ContactDetails("Martin", null, new String[]{"b"}));
  		return list;
  	}
docs: Retrieves dummy data used by this example.
  
  @return the list of data for this example.