[{
    "id":1,
    "text":"Folder1",
    "iconCls":"icon-ok",
    "children":[{
        "id":2,
        "text":"File1",
        "checked":true
    },{
        "id":3,
        "text":"Folder2",
        "state":"open",
        "children":[{
            "id":4,
            "text":"File3",
            "attributes":{
                "p1":"value1",
                "p2":"value2"
            },
            "checked":true,
            "iconCls":"icon-reload"
        },{
            "id": 8,
            "text":"Async Folder",
            "state":"closed"
        }]
    }]
}]