[{ 
    "id": "demo_root_1_child_1", 
    "text": "Root #1 Child 1", 
    "children": [{ 
        "id": "demo_root_1_child_2", 
        "text": "No Child", 
        "type": "file",
        "state": {
            "disabled": true
        }
    }],
    "state": {
        "opened": true
    }
},{ 
    "id": "demo_root_1_child_3", 
    "text": "Root #1 Child 2", 
    "children": [{ 
        "id": "demo_root_1_child_4", 
        "text": "No Child", 
        "type": "file",
        "state": {
            "disabled": true
        }
    },{ 
        "id": "demo_root_1_child_5", 
        "text": "No Child", 
        "type": "file",
        "state": {
            "disabled": true
        }
    }],
    "state": {
        "opened": true
    }
},{ 
    "id": "demo_root_1_child_6", 
    "text": "Root #1 Child 3", 
    "children": [{ 
        "id": "demo_root_1_child_7", 
        "text": "One more", 
        "type": "file" 
    },{ 
        "id": "demo_root_1_child_8", 
        "text": "Custom Icons", 
        "type": "folder",
        "icon":  "fa fa-briefcase fa-lg text-inverse"
    }],
    "state": {
        "opened": true
    }
}]