message: 1. Marked "sessionId" as required property in DataFlowDebugCommandRequest
diff: "description": "The command payload object.",
  "type": "object"
  }
  - }
  + },
  + "required": [
  + "sessionId"
  + ]
  },
  "DataFlowDebugQueryResponse": {
  "description": "Response body structure of data flow query for data preview, statistics or expression preview.",
  