Visualizer 
{
    "value": "idle",
    "previousValue": "",
    "event": {},
    "previousEvent": {},
    "context": {
        "expandedIds": {},
        "selectedIds": {},
        "focusedId": null,
        "id": ":R1m:",
        "selectionMode": "multiple",
        "typeahead": {
            "keysSoFar": "",
            "timer": -1
        },
        "isMultipleSelection": true
    },
    "done": false,
    "tags": [],
    "nextEvents": [
        "ITEM.REMOVE",
        "ITEM.SELECT_ALL",
        "ITEM.FOCUS",
        "ITEM.ARROW_DOWN",
        "ITEM.ARROW_UP",
        "ITEM.ARROW_LEFT",
        "BRANCH.ARROW_LEFT",
        "BRANCH.ARROW_RIGHT",
        "BRANCH.EXPAND_LEVEL",
        "ITEM.HOME",
        "ITEM.END",
        "ITEM.CLICK",
        "BRANCH.CLICK",
        "BRANCH_TOGGLE.CLICK",
        "TYPEAHEAD",
        "TREE.BLUR",
        "EXPANDED.SET",
        "SELECTED.SET"
    ],
    "changed": false
}