2 * @class Ext.util.Grouper
3 * @extends Ext.util.Sorter
6 Ext.define('Ext.util.Grouper', {
8 /* Begin Definitions */
10 extend: 'Ext.util.Sorter',
15 * Function description
16 * @param {Ext.data.Model} instance The Model instance
17 * @return {String} The group string for this model
19 getGroupString: function(instance) {
20 return instance.get(this.property);