message: BugFix: defaultSinkRefs is an array of string
diff: },
  "defaultSinkRefs": {
  "description": "The sinks to be used if diagnostics is enabled. Sink choices can be overridden at the service and code package level.",
  + "type": "array",
  + "items": {
  "type": "string"
  }
  }
  + }
  },
  "DiagnosticsRef": {
  "description": "Reference to sinks in DiagnosticsDescription.",
  