function myTemplate() {
    return `<div>
                <table>
                    <tr>
                        <td>First field:</td><td>#first#</td>
                    <tr>
                    <tr>
                        <td>Second field:</td><td>#second#</td>
                    <tr>
                    <tr>
                        <td>Third field:</td><td>#third#</td>
                    <tr>
                </table>
            </div><hr>`;
}

// declare a counter variabel 
// in case of update you can counter the dom children ex: var _counter = $('#collection-div').children().length;
var _counter = 0;
$('#btnAdd').on('click', function (){
    // you just need to pass the dom that contains the data-prototype attribute along with your template function
    var temp = SFCollectionAnalyzer.buildTemplate($('#collection-div'), myTemplate());
    var block = temp.replace(/__name__/g, _counter);//--temp is still using "__name__" so you just need to replace it with the counter
    $('#div-where-to-insert-collection').append(block);
    _counter++;
});