How can I get a number of items from a group

Question

I'm trying to load assets into a library. Most of the assets are groups. I'd like to label each asset with number of items from that specific group.
Here is my code:
var d=app.activeDocument;
//create empty library
var library = app.libraries.add(File('mylibrary.indl'));
for(myCounter = 0; myCounter < d.pages.length; myCounter ++){
    if(d.pages[myCounter].groups.length > 0){
         //how do I get number of items from a group?
         var item_count = ?????
    }else{
         var item_count = '1';
    library.store(d.pages[myCounter].allPageItems);
    library.assets[0].name=item_count;
Thanks for your help and Happy New Year!!!

Answer 1

I figured it out!!!
Here is the solve that worked for me:
var elems = d.pages[myCounter].groups[0].pageItems.everyItem().getElements();
var item_count = elems.length;