[
	{ 
        "data" : "A node",
        "children" : [ { "data" : "Only child", "state" : "closed" } ],
        "state" : "open",
        "attr" : { "id":"000001"}
    },
	{
        "data" : "B node",
        "children" :
            [
                {
                    "data" : "A child",
                    "state" : "closed",
                    "attr" : { "id":"000003"},
                    "children" :
                        [
                            {
                                "data": "hahaha",
                                "state":"closed",
                                "attr" : { "id":"000004"}
                            }
                        ]                   
                },
                {
                    "data" : "B child",
                    "state" : "closed",
                    "attr" : { "id":"000003"},
                    "children" :
                        [
                            {
                                "data": "hahaha",
                                "state":"closed",
                                "attr" : { "id":"000004"}
                            }
                        ]
                }
            ],
        "state" : "open",
        "attr" : { "id":"000002"}
    }
]