message: Removed unneeded required: 0, per review
diff: "member": {
  "type": {
  "name": "type",
  - "type": "WorkerType",
  - "required": 0
  + "type": "WorkerType"
  },
  "credentials": {
  "name": "credentials",
  - "type": "RequestCredentials",
  - "required": 0
  + "type": "RequestCredentials"
  },
  "name": {
  "name": "name",
  - "type": "DOMString",
  - "required": 0
  + "type": "DOMString"
  }
  }
  }
  