Grouping is not working for my kendo listview

Question

Hi,

       grouping is not working for my kendo listview.

Here is my code: Am i missing some thing..Please help ME!!!

$(document).ready(function () {

dataSource = new kendo.data.DataSource({

transport: {

read: {

url: "/api/Item_container_masters",

dataType: "json"

},

group: { field: "Type" }

},

batch: true,

pageSize: 6,

schema: {

model: {

id: "Id",

fields: {

Id: { editable: false, nullable: true },

Description: "Description",

Type:"Type",

}

}

}

});