How to group the list

In the Kitchen Sink example, list can be grouped by using the "grouped" attribute but in the API, "grouped" is not available for Ext.dataview.List. How to group the list?

Code:

---

Ext.define('App.store.ShopInfos', {
    extend: 'Ext.data.Store',
    requires: 'App.model.ShopInfo',
    model: 'App.model.ShopInfo',
    autoLoad: true,
    sorters: 'NameEn',
    groupField: 'category',
    proxy: {
        type: 'ajax',
        url: 'WebService.asmx/GetShopInfo',
        extraParams: {
            Id: 0
        },
        headers: {'Content-type': 'application/json'},
        method: 'post',
        reader: {
            root: 'd'
        }
    },
    getGroupString: function (record) {
        return record.get('Category')[0];
    }


});

---

Code:

---

{
                xtype: 'list',
                id: 'shopinfoList',
                store: 'ShopInfos',
                onItemDisclosure: function (record) {
                },
                itemTpl:    '<div class="list-item-title">{NameEn}</div>' +
                            '<div class="list-item-narrative">{Category}</div>'
                //grouped: true
                //indexBar: true
            }

---

There is an example that comes with the download... in the examples/list/index.html

grouped and indexbar are valid configs... documentation isn't 100%

But I can't use it in this way...:(

Code:

---

{                xtype: 'list',
                id: 'shopinfoList',
                store: 'ShopInfos',
                mode: 'SINGLE',
                allowDeselect: true,
                disclosure: true,
                grouped: true,
                indexBar: true,
                itemTpl:    '<div class="list-item-title">{Name}</div>' +
                            '<div class="list-item-narrative">{Category}</div>'
                //grouped: true
                //indexBar: true
            }

---