{
  "apiVersion": "0.1.0",
  "specVersion": "0.5.0",
  "variable": {
    "id": "duration",
    "name": "Duration",
    "path": "~~~Duration",
    "level": "L3",
    "type": "duration",
    "required": true,
    "privacy": "audit",
    "sourceProtocol": "value-capture",
    "description": "Computed duration of the activity.",
    "kind": "facet",
    "protocolId": "value-capture",
    "protocolPath": "~ValueCaptureProtocol",
    "nodeId": "time-slice",
    "nodePath": "~~TimeSlice"
  }
}