Add attributes to the selected list items in select2 - jquery-select2-4

Question

Here is a working jsfiddle. I wish to add attributes (in particular id) to the <li> elements created. My use case is slightly different from the fiddle, rather than using an array, I am getting my data from ajax. In addition I want to give my users flexibility to create new tags if the same are not present in database. To save newly created item list having id's is a much better handle than just plain classes. Can I modify the attributes of the <li> elements created?
My actual code is something like this:
$(".js-data-example-ajax").select2({
ajax : {
url : "/content/search_skills",
dataType : 'json',
delay : 250,
data : function(params) {
return {
q : params.term, // search term
page : params.page
};
},
processResults : function(data, params) {
params.page = params.page || 1;
return {
results : data.items,
pagination : {
more : (params.page * 5) < data.total_count
}
};
},
cache : true
},
escapeMarkup : function(markup) {
return markup;
}, // let our custom formatter work
minimumInputLength : 1,
templateResult : formatRepo,
templateSelection : formatRepoSelection,
tags : true,
createTag : function (params) {
return {
id: params.term,
text: params.term,
newOption: true
}
},
});
function formatRepo(repo) {
if (repo.loading)
return repo.text;
var markup = '<ul class="list-group clear-list m-t">' + '<li class="list-group-item fist-item"><span class="pull-right">' + repo.id + '</span> <span class="label label-success">' + repo.count + '</span> ' + repo.text + '</li>';
return markup;
}
function formatRepoSelection (repo) {
var markup = repo.text;
return markup;
}
And my jsp (html) is:
<select class="js-data-example-ajax" style="width: 100%" multiple="multiple">
//Iterating through database query result to pre-load option items
<option value="<%=skill_objective.get("id")%>" selected="selected"><%=skill_objective.get("id")%> <%=skill_objective.get("name") %></option>
</select>

Answer 1

Here is a working solution:
$(".js-data-example-ajax").select2('data') will give me a hash of all the objects selected.