fireInternet/res/extjs/examples/sandbox/get-users.json

[
    {
        "text": "Friends",
        "expanded": true,
        "children": [
            { "text":  "Jack", "iconCls": "user", "leaf": true },
            { "text": "Brian", "iconCls": "user", "leaf": true },
            { "text": "Jon", "iconCls": "user", "leaf": true },
            { "text": "Tim", "iconCls": "user", "leaf": true },
            { "text": "Nige", "iconCls": "user", "leaf": true },
            { "text": "Fred", "iconCls": "user", "leaf": true },
            { "text": "Bob", "iconCls": "user", "leaf": true }]
    },{
        "text": "Family",
        "expanded": true,
        "children": [
            { "text": "Kelly", "iconCls": "user-girl", "leaf": true },
            { "text": "Sara", "iconCls": "user-girl", "leaf": true },
            { "text": "Zack", "iconCls": "user-kid", "leaf": true },
            { "text": "John", "iconCls": "user-kid", "leaf": true }
        ]
    }
]